Backend Developer Jobs in United Kingdom

Backend Developer jobs in United Kingdom hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $187,986/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.

You searched for “Backend Developer Jobs in United Kingdom”, so this list shows: Backend Developer roles · an office in United Kingdom · known staffing agencies left out. Adjust the filters

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8,800 remote jobs are open to candidates in United Kingdom.Show remote jobs

Beauhurst

beauhurst.com
beauhurst.com • HQ: London, United Kingdom • Venture Capital • B2B Company & Contact Data • 51-200 employees • Est. 2010 • Trust B • Hiring 6, 1 new
HQ: London, United Kingdom • Venture Capital • B2B Company & Contact Data • 51-200 employees • Est. 2010 • Trust B • Hiring 6, 1 new
Discover data on every private company in the UK and Germany. Powered by smart tech and even smarter people.
No named decision-maker yet.
Careers mailbox is known
Visa sponsor 6 hours ago Hiring now · 86%

Junior Web Developer

$40k per year • Junior • In office (Nottingham, United Kingdom) • Full-Time • Junior
JavaScript
AI/ML
Claude Code
Claude
Frontend
Vue.js
React.js
DevOps
Git
Analytics
A/B Testing
Management
Zapier
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The Flex

theflex.io
theflex.io • Paris • Belfast • Tunis • Jakarta • Kuala Lumpur • Manufacturing & Industrial Software • Healthcare & Life Sciences Consulting • Hiring 2, 2 new
Paris • Belfast • Tunis • Jakarta • Kuala Lumpur • Manufacturing & Industrial Software • Healthcare & Life Sciences Consulting • Hiring 2, 2 new
Theflex.io (The Flex) is an electronic Quality Management System (eQMS) designed for startups and scale-ups. It is built natively on Microsoft 365 to help teams manage quality, compliance, and documentation without the complexity of traditional enterprise systems.
No named decision-maker yet.
No careers mailbox known
6 hours ago Hiring now · 86%

Senior Full-Stack Product Engineer

≈ $54k – $110k per year (Estimated) • Senior • Paris • Belfast • Tunis • Jakarta • Kuala Lumpur • Remote (Poland) • Full-Time • Senior
TypeScript
Python
JavaScript
Python
FastAPI
Databases
Supabase
PostgreSQL
AI/ML
OpenAI
AI Agents
Frontend
React.js
Mobile
Twilio
DevOps
AWS
GitHub Actions
Docker
+5
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6 hours ago Hiring now · 86%

Senior Software Engineer

≈ $55k – $111k per year (Estimated) • Senior • Paris • Belfast • Tunis • Jakarta • Kuala Lumpur • Remote (Poland) • Full-Time • Senior
Python
TypeScript
Python
FastAPI
Databases
Supabase
PostgreSQL
AI/ML
OpenAI
AI Agents
Mobile
Twilio
DevOps
AWS
GitHub Actions
Docker
+3
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Report

webbyfox consultancy

webbyfox.co.uk
webbyfox.co.uk • London • Software • Web Development Services • Est. 2012 • Hiring 2, 2 new
London • Software • Web Development Services • Est. 2012 • Hiring 2, 2 new
UK Python web development agency. Senior engineers building Django web applications and FastAPI services, upgrading legacy codebases and extending in-house teams.
No named decision-maker yet.
Careers mailbox is known
1 day ago Hiring now · 86%

Senior Python Engineer

≈ $84k – $158k per year (Estimated) • Senior • 5+ years exp • London • Remote (United States, United Kingdom, US time zones hours) • Bachelor's Degree • Senior
Python
PHP
Python
Flask
FastAPI
Django
Asyncio
Celery
PHP
Laravel
WordPress
Databases
Redis
MySQL
PostgreSQL
Frontend
GraphQL
DevOps
Rest API
CI/CD
Git
Docker
GCP
Kubernetes
Azure
AWS
QA
Pytest
+14
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Wayve

wayve.ai
wayve.ai • HQ: London, United Kingdom • Machine Learning • Autonomous Driving • 501-1000 employees • Est. 2017 • Startup • Hiring 175, 11 new
HQ: London, United Kingdom • Machine Learning • Autonomous Driving • 501-1000 employees • Est. 2017 • Startup • Hiring 175, 11 new
Wayve is a British autonomous driving company founded in Cambridge in 2017 that trains end-to-end neural networks to drive rather than assembling hand-written rules around high-definition maps. Its AI Driver learns from camera video and can be deployed on standard vehicle sensor sets, which is what lets the company demonstrate driving in cities it has never mapped. Headquartered in London and backed by a one billion dollar SoftBank-led round plus investment from NVIDIA, Microsoft and Uber, it partners with carmakers to ship assisted driving software and is developing fully driverless deployments.
Alex Kendall · Co-Founder & Chief Executive Officer · decision-maker
Amar Shah · Co-Founder · founder
Careers mailbox is known
Verified live · 2 hours ago Visa sponsorship 1 day ago Hiring now · 90%

Senior Software Engineer - Platform Integration, Robot Software

≈ $141k – $276k per year (Estimated) • Senior • Hybrid (London, United Kingdom) • Relocation • Full-Time • Senior
Rust
C++
Python
AI/ML
Embodied AI
DevOps
Linux
Robotics
ROS2
NVIDIA Drive
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Verified live · 2 hours ago Visa sponsorship 4 days ago Hiring now · 90%

Software Engineer - Map & Route

≈ $115k – $282k per year (Estimated) • Hybrid (London, United Kingdom) • Relocation • Full-Time
TypeScript
SQL
Python
Python
pySpark
Databases
PostGIS
Databricks
PostgreSQL
AI/ML
Embodied AI
Spark
Flyte
DevOps
Bazel
Kubernetes
Azure
Management
Google Maps
+6
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Verified live · 2 hours ago Visa sponsorship 10 days ago Hiring now · 90%

Staff Software Engineer, Storage Platform

≈ $235k – $406k per year (Estimated) • Staff+ • Hybrid (London, United Kingdom) • Relocation • Full-Time • Staff
Python
AI/ML
Embodied AI
DevOps
IAM
Terraform
GCP
Kubernetes
Azure
AWS
Apply

Inspired Thinking Group (ITG)

inspiredthinking.group
inspiredthinking.group • London • Utrecht • Stamford • Birmingham • Bracknell • Recruiting & Staffing • Creative Agencies • Digital Marketing • 1001-5000 employees • Trust A • Hiring 32, 19 new
London • Utrecht • Stamford • Birmingham • Bracknell • Recruiting & Staffing • Creative Agencies • Digital Marketing • 1001-5000 employees • Trust A • Hiring 32, 19 new
ITG is a leading multi-channel marketing, design, and digital agency that harnesses innovative technology and creative talent to drive impactful global campaigns. With a dedication to simplifying and automating marketing processes, ITG offers an extensive array of services including creative production, strategy development, digital performance marketing, and comprehensive data insights. Their specialized platforms, like Storyteq and Deployteq, empower brands to engage customers through personalized, real-time campaigns across all channels, whether online or in-store. ITG's state-of-the-art Capture Studios in Birmingham exemplifies their commitment to tech-enabled production, featuring advanced AI and AR capabilities for producing high-quality film and photography. Their focus on client collaboration ensures that brands receive tailor-made marketing solutions designed to enhance customer experiences and drive growth. Committed to sustainability, ITG integrates eco-friendly practices in their operations while maintaining efficiency across various marketing disciplines. With a strong emphasis on innovative content and technology, ITG is positioned to transform marketing for businesse
No named decision-maker yet.
Careers mailbox is known
Verified live · 2 hours ago Visa sponsor 1 day ago Hiring now · 90%

Lead Java Developer (3-6 Month Contract)

≈ $88k – $175k per year (Estimated) • Lead • Birmingham • Remote (United Kingdom) • Contractor • Staff
Java
Kotlin
Java
Maven
Spring Boot
Kotlin
Mockito
AI/ML
Cursor
Claude Code
AI Agents
Mobile
JUnit
DevOps
GitLab
Terraform
Rest API
Git
Docker
AWS
Management
Confluence
Scrum
Agile
QA
JMeter
+11
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Campbell Global

campbellglobal.com
campbellglobal.com • HQ: Portland, United States • Land & Agriculture Property • Asset Management & Funds • Forest Resources • 501-1000 employees • Trust A • Hiring 377, 219 new
HQ: Portland, United States • Land & Agriculture Property • Asset Management & Funds • Forest Resources • 501-1000 employees • Trust A • Hiring 377, 219 new
Campbell Global brings more than three decades of experience and leadership to sustainable timberland and natural resource investment management.
No named decision-maker yet.
No careers mailbox known
Verified live · 1 hour ago 1 day ago Hiring now · 86%

Principal Software Engineer - Python/AWS - Executive Director

≈ $90k – $214k per year (Estimated) • Head+ • In office (London, United Kingdom) • Principal
Python
AI/ML
Prompt Engineering
RAG
LLM
Machine Learning
AI Agents
DevOps
CI/CD
AWS
Management
Agile
+1
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Verified live · 1 hour ago 3 days ago Hiring now · 84%

Lead Software Engineer - Python / Java & AI

≈ $82k – $165k per year (Estimated) • Lead • In office (Glasgow, United Kingdom) • Staff
JavaScript
SQL
Python
Databases
Firestore
Oracle
DynamoDB
Amazon Aurora
Azure Cosmos DB
Azure SQL Database
AI/ML
Function Calling
Agentic Workflows
LLM
AI Agents
DevOps
gRPC
OpenShift
Amazon EKS
Google GKE
Azure AKS
Amazon ECS
Terraform
Rest API
Git
GCP
Kubernetes
Azure
CI/CD
AWS
Management
Agile
+20
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Verified live · 1 hour ago 3 days ago Hiring now · 84%

Principal Software Engineer - Java

≈ $85k – $171k per year (Estimated) • Lead • In office (Glasgow, United Kingdom) • Principal
Java
AI/ML
Human-in-the-Loop
AI Agents
Apply

Visa

visa.com
visa.com • HQ: San Francisco, United States • Payment Processing & Gateways • Cards & Card Issuing • 5000+ employees • Est. 1958 • Trust A • Hiring 632, 79 new
HQ: San Francisco, United States • Payment Processing & Gateways • Cards & Card Issuing • 5000+ employees • Est. 1958 • Trust A • Hiring 632, 79 new
Visa is an American payments technology company whose network traces back to the BankAmericard programme launched in 1958 and which became an independent public company in 2008. It does not issue cards or lend money; instead it operates VisaNet, the switching infrastructure that authorises, clears and settles hundreds of billions of transactions a year between issuing banks, acquirers and merchants in more than two hundred countries. Headquartered in San Francisco, the company earns fees on payment volume and processed transactions, and has expanded into account-to-account transfers, tokenisation, fraud scoring and open banking through Visa Direct and its value-added services division.
Chris Suh · Chief Financial Officer · decision-maker
Ryan McInerney · Chief Executive Officer · decision-maker
Dee Hock · Founder of the Visa Network · founder
Alfred Kelly · former Chief Executive Officer
No careers mailbox known
Verified live · 10 hours ago Visa sponsor 1 day ago Likely open · 63%

Software Engineer - DevSecOps

≈ $75k – $185k per year (Estimated) • In office (Reading, United Kingdom) • Bachelor's Degree • Full-Time
Claude
Copilot
DevOps
CI/CD
Apply
Verified live · 10 hours ago Visa sponsor 10 days ago Likely open · 68%

Software Engineer

≈ $53k – $122k per year (Estimated) • Junior • 2+ years exp • Hybrid (Reading, United Kingdom) • Bachelor's Degree • Full-Time • Junior
ChatGPT
Claude Code
Copilot
Apply
Verified live · 10 hours ago Visa sponsor 1 month ago Fading · 42%

Senior Software Engineer

≈ $93k – $182k per year (Estimated) • Senior • 5+ years exp • Hybrid (Basingstoke, United Kingdom) • Bachelor's Degree • Full-Time • Senior
Java
Python
COBOL
Java
Apache Tomcat
Spring Boot
COBOL
IBM MQ
Databases
Apache Kafka
AI/ML
LangGraph
Flink
LangChain
LLM
Cline
Cursor
Model Context Protocol
Copilot
DevOps
Splunk
Unix
Platform Engineering
Prometheus
Grafana
Ansible
Jenkins
Terraform
Docker
Linux
GCP
Kubernetes
Azure
AWS
CI/CD
Management
Agile
+23
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Sky

sky.com
sky.com • HQ: Isleworth, United Kingdom • MVNO • Streaming & OTT Platforms • Broadcasting • Broadband • Est. 1990 • Likely startup • Trust B • Hiring 73, 7 new
HQ: Isleworth, United Kingdom • MVNO • Streaming & OTT Platforms • Broadcasting • Broadband • Est. 1990 • Likely startup • Trust B • Hiring 73, 7 new
Sky is a European media and telecommunications company headquartered at Osterley in west London that sells pay TV, streaming, broadband and mobile services and produces and broadcasts sports, news and entertainment. Founded in 1990 and owned by the US group Comcast since 2018, it operates in the United Kingdom, Ireland, Italy and Germany, runs the Sky Mobile service, and has large customer contact and technology sites in Livingston, Leeds and other cities. It hires retail and contact centre sales advisors, finance analysts, product and project managers, reliability engineers, risk investigators and creative trailer editors.
No named decision-maker yet.
No careers mailbox known
Verified live · 3 hours ago 1 day ago Hiring now · 70%

Senior Software Triage Engineer

≈ $86k – $169k per year (Estimated) • Senior • Hybrid (London, United Kingdom) • Full-Time • Senior
C++
Python
DevOps
Splunk
Datadog
Wi-Fi
Linux
Management
Agile
Apply
Verified live · 3 hours ago 2 months ago Long shot · 11%

Senior Software Developer (Python)

≈ $86k – $168k per year (Estimated) • Senior • Hybrid (London, United Kingdom) • Full-Time • Senior
Python
SQL
Python
Flask
FastAPI
Django
Databases
PostgreSQL
AI/ML
Airflow
Vertex AI
Kubeflow
Pandas
Spark
Machine Learning
DevOps
Concourse
GitHub Actions
Jenkins
Git
Docker
GCP
Kubernetes
Azure
CI/CD
AWS
Splunk
Prometheus
Grafana
+17
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Sevenrooms

sevenrooms.com
sevenrooms.com • HQ: New York, United States • Artificial Intelligence • Customer & Retention Analytics • Hotels & Resorts • Scheduling & Booking Software • CRM Software • 51-200 employees • Est. 2011 • Trust A • Hiring 9, 1 new
HQ: New York, United States • Artificial Intelligence • Customer & Retention Analytics • Hotels & Resorts • Scheduling & Booking Software • CRM Software • 51-200 employees • Est. 2011 • Trust A • Hiring 9, 1 new
SevenRooms was founded on understanding the human side of customer interactions. Find out how we help hospitality brands create meaningful guest relationships.
Kinesh Patel · Executive Officer, Director · decision-maker
Joel Montaniel · Executive Officer, Director · decision-maker
Allison Page · Executive Officer, Director · decision-maker
Dinesh Moorjani · Director
No careers mailbox known
Verified live · 1 hour ago 1 day ago Hiring now · 86%

Software Engineer, Backend

≈ $67k – $154k per year (Estimated) • Middle • 3+ years exp • Hybrid (London, United Kingdom) • Bachelor's Degree • Middle
Rust
Python
DevOps
GCP
Apply

OakNorth

oaknorth.com
oaknorth.com • HQ: London, United Kingdom • Financial Software & Embedded Finance • Commercial & Retail Banks • Business & SME Lending • 201-500 employees • Est. 2015 • Hiring 21, 7 new
HQ: London, United Kingdom • Financial Software & Embedded Finance • Commercial & Retail Banks • Business & SME Lending • 201-500 employees • Est. 2015 • Hiring 21, 7 new
OakNorth is a London bank founded in 2015 that lends to mid-sized businesses using its own credit analysis platform. Its ON Credit Intelligence software models borrower performance in granular sector detail and is licensed to banks in the United States and Europe. The company has lent billions of pounds while keeping loss rates unusually low for the segment.
No named decision-maker yet.
Careers mailbox is known
Verified live · 1 hour ago Visa sponsor 1 day ago Hiring now · 86%

Lead Engineer - Personal Savings

≈ $108k – $219k per year (Estimated) • Lead • Hybrid (London, United Kingdom) • Full-Time • Staff
Node JS
TypeScript
Python
JavaScript
Databases
Google BigQuery
MySQL
PostgreSQL
Frontend
styled-components
React.js
DevOps
CircleCI
GitHub
Terraform
Docker
GCP
CI/CD
AWS
QA
Cypress
Jest
Pytest
+11
Apply

Perplexity AI

perplexity.ai
perplexity.ai • HQ: San Francisco, United States • Foundation Models • LLM & Generative AI • Search Engines • AI Search • 1001-5000 employees • Est. 2022 • Trust B • Hiring 130, 10 new
HQ: San Francisco, United States • Foundation Models • LLM & Generative AI • Search Engines • AI Search • 1001-5000 employees • Est. 2022 • Trust B • Hiring 130, 10 new
Perplexity AI is an American company that builds an answer engine combining live web search with large language models to return sourced, conversational responses instead of a list of links. Its products span a consumer assistant on web and mobile, the Comet browser, enterprise search over internal documents and the Sonar developer API that exposes the same grounded retrieval stack. Founded in 2022 in San Francisco by former researchers and engineers from OpenAI, Meta and Databricks, the company is backed by NVIDIA, IVP, New Enterprise Associates and SoftBank.
Johnny Ho · Co-Founder & Chief Strategy Officer · decision-maker
Denis Yarats · Co-Founder & Chief Technology Officer · decision-maker
Aravind Srinivas · Co-Founder & Chief Executive Officer · decision-maker
Aravind Lakshminarayanan · Director, Executive Officer · decision-maker
No careers mailbox known
Verified live · 2 hours ago Visa sponsor 1 day ago Likely open · 63%

Member of Technical Staff (Software Engineer, Fraud Prevention)

≈ $219k – $378k per year (Estimated) • Staff+ • Hybrid (London, United Kingdom, Belgrade, Serbia) • Full-Time • Staff
Rust
Go
C++
AI/ML
Perplexity
DevOps
Terraform
Kubernetes
Apply
Top 25% payVerified live · 2 hours ago Visa sponsor 8 days ago Likely open · 63%

Member of Technical Staff (Software Engineer, Enterprise Trust & Governance)

$220k – $405k per year • Staff+ • 4+ years exp • In office (San Francisco, Seattle, New York, United States, London, United Kingdom, Toronto, Canada) • Full-Time • Staff
Rust
Go
Python
AI/ML
Perplexity
DevOps
Platform Engineering
Kubernetes
AWS
Cybersecurity
Okta
Microsoft Entra ID
+1
Apply
Top 25% payVerified live · 2 hours ago Visa sponsor 1 month ago Fading · 35%

Member of Technical Staff (Software Engineer, Infrastructure & Platform)

$220k – $405k per year • Staff+ • 4+ years exp • Hybrid (San Francisco, Austin, Seattle, New York, United States, London, United Kingdom) • Full-Time • Staff
Rust
Go
C++
Java
Python
AI/ML
Perplexity
DevOps
Kubernetes
Apply

Tesco

tesco.com
tesco.com • HQ: Welwyn Garden City, United Kingdom • Retail & Shop Systems • Online Groceries • 5000+ employees • Est. 1919 • Trust A • Hiring 647, 238 new
HQ: Welwyn Garden City, United Kingdom • Retail & Shop Systems • Online Groceries • 5000+ employees • Est. 1919 • Trust A • Hiring 647, 238 new
Tesco is a leading British multinational retailer that stands as the largest grocery store chain in the United Kingdom. Headquartered in Welwyn Garden City, England, the company operates thousands of supermarkets, convenience stores, and a major e-commerce platform. It offers a wide variety of products ranging from fresh food and clothing to household items and financial services.
No named decision-maker yet.
No careers mailbox known
Verified live · 5 min ago 1 day ago Hiring now · 90%

Senior Software Development Engineer (.NET)

≈ $78k – $152k per year (Estimated) • Senior • In office (Welwyn Garden City, United Kingdom) • Senior
C#
Java
SQL
C#
.NET
Databases
Cassandra
PostgreSQL
DevOps
HAProxy
Azure DevOps
Docker
Azure
AWS
+3
Apply
Verified live · 5 min ago 1 day ago Hiring now · 90%

Software Development Engineer II

≈ $65k – $148k per year (Estimated) • Middle • In office (London, United Kingdom) • Middle
Java
TypeScript
SQL
Java
Spring Boot
Micronaut
Databases
CouchDB
Azure Cosmos DB
PostgreSQL
DevOps
Terraform
Azure
CI/CD
Splunk
New Relic
GitHub
Cybersecurity
Snyk
+7
Apply
Verified live · 5 min ago 4 days ago Hiring now · 78%

Software Development Engineer III - Profile

≈ $65k – $148k per year (Estimated) • Middle • In office (London, United Kingdom) • Middle • English: B2
Java
TypeScript
SQL
Java
Spring Boot
Micronaut
Databases
CouchDB
Azure Cosmos DB
PostgreSQL
DevOps
Terraform
Azure
CI/CD
Splunk
New Relic
GitHub
AWS
Cybersecurity
Snyk
Management
Kanban
Scrum
Agile
+11
Apply

Threecolts

threecolts.com
threecolts.com • HQ: New York, Wilmington, United States • Marketplaces • E-commerce Platforms • Commerce • 201-500 employees • Est. 2021 • Likely startup • Hiring 11, 3 new
HQ: New York, Wilmington, United States • Marketplaces • E-commerce Platforms • Commerce • 201-500 employees • Est. 2021 • Likely startup • Hiring 11, 3 new
Threecolts is a company founded in 2021 that acquires and operates software for marketplace sellers. Its portfolio covers repricing, customer service, accounting and analytics tools for Amazon and Walmart merchants. The group serves tens of thousands of sellers.
No named decision-maker yet.
Careers mailbox is known
Verified live · 1 hour ago Visa sponsor 1 day ago Hiring now · 86%

Senior Software Engineer – C# / .NET

≈ $80k – $152k per year (Estimated) • Senior • 6+ years exp • United Kingdom • Remote (United Kingdom) • Senior
C#
TypeScript
SQL
JavaScript
C#
ASP.NET Core
Frontend
Vue.js
React.js
DevOps
Rest API
Git
Azure
AWS
+3
Apply
Verified live · 1 hour ago Visa sponsor 1 month ago Likely open · 45%

Senior Software Engineer - C# / Java

≈ $80k – $152k per year (Estimated) • Senior • 5+ years exp • United Kingdom • Remote (United Kingdom) • Senior
C#
Java
SQL
DevOps
Rest API
Git
AWS
Apply

Frontier Agriculture Ltd

frontierag.co.uk
frontierag.co.uk • HQ: London, United Kingdom • Wholesale • Farming & Agriculture • 501-1000 employees • Est. 2005 • Trust A • Hiring 9, 2 new
HQ: London, United Kingdom • Wholesale • Farming & Agriculture • 501-1000 employees • Est. 2005 • Trust A • Hiring 9, 2 new
Expertise straight to your inbox. By subscribing, you'll receive an email notification each time an article is published so you can always stay up to date with the latest from our experts.
No named decision-maker yet.
Careers mailbox is known
Verified live · 2 hours ago 1 day ago Hiring now · 86%

Mid Software Engineer

≈ $58k – $133k per year (Estimated) • Junior • 2+ years exp • Hybrid (Cambridge, United Kingdom) • Full-Time • Junior • English
TypeScript
SQL
Python
JavaScript
Python
FastAPI
Databases
PostgreSQL
AI/ML
Polars
Fine-tuning
Embeddings
LangChain
Prompt Engineering
RAG
LLM
Frontend
Vue.js
DevOps
AWS Lambda
GitLab
Amazon S3
GitHub Actions
GitHub
Terraform
CI/CD
AWS
Management
Jira
Scrum
Agile
QA
Playwright
Jest
Pytest
+20
Apply

GitLab

gitlab.com
gitlab.com • HQ: San Francisco, United States • DevSecOps • Developer Tools • DevOps & Platform Engineering • 1001-5000 employees • Est. 2011 • Trust A • Hiring 235, 29 new
HQ: San Francisco, United States • DevSecOps • Developer Tools • DevOps & Platform Engineering • 1001-5000 employees • Est. 2011 • Trust A • Hiring 235, 29 new
GitLab is a company founded in 2011 around an open source alternative to GitHub that grew into a single application covering the whole software delivery lifecycle. Its platform combines source control, code review, continuous integration and deployment, package registries, security scanning and project planning in one product rather than a set of integrated tools, which appeals to organisations wanting fewer vendors in the toolchain. Listed on Nasdaq since 2021, the company is known for operating with no offices at all and for publishing an unusually detailed public handbook describing how it runs itself.
Sid Sijbrandij · Co-founder and Executive Chair · decision-maker
Paul Machle · Executive Officer · decision-maker
Sytse Sijbrandij · Executive Officer, Director · decision-maker
Dmitry Zaporozhets · Executive Officer, Director · decision-maker
No careers mailbox known
Verified live · 4 hours ago 1 day ago Hiring now · 90%

Intermediate Fullstack Engineer (Ruby/Vue.js), Growth

≈ $65k – $145k per year (Estimated) • Equity • Middle • United Kingdom • Remote (United Kingdom) • PhD • Middle
Ruby
JavaScript
Ruby
Ruby on Rails
Databases
PostgreSQL
Frontend
Vue.js
DevOps
GitLab
Git
Analytics
A/B Testing
Apply
Verified live · 4 hours ago 5 days ago Hiring now · 90%

Backend Engineer (Ruby), Create: Change Record

$63k – $95k per year • Equity • Poland • United Kingdom • Remote (United Kingdom, Poland) • PhD • English: B2
Ruby
Ruby
Ruby on Rails
AI/ML
AI Agents
Frontend
GraphQL
DevOps
GitLab
Git
Apply
Top 25% payVerified live · 4 hours ago 15 days ago Hiring now · 89%

Staff Software Engineer, Security Factory: Static Analysis

$153k – $259k per year • Equity • Staff+ • United States • United Kingdom • Canada • Israel • Remote (United States, United Kingdom, Canada, Israel) • PhD • Staff
Rust
Ruby
Go
AI/ML
LLM Guardrails
LLM
AI Agents
DevOps
GitLab
Docker
CI/CD
Cybersecurity
OWASP Top 10
CWE
OWASP
+4
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Zaizi

zaizi.com
zaizi.com • HQ: London, United Kingdom • Cybersecurity • Artificial Intelligence • Government • 51-200 employees • Est. 2007 • Trust A • Hiring 14, 3 new
HQ: London, United Kingdom • Cybersecurity • Artificial Intelligence • Government • 51-200 employees • Est. 2007 • Trust A • Hiring 14, 3 new
Zaizi is a London technology company founded in 2007 that builds secure digital services for government. Its teams deliver content management, data platforms and cloud services for departments handling sensitive information. The company holds security clearances and works on border, justice and defence programmes.
No named decision-maker yet.
No careers mailbox known
Verified live · 2 hours ago Visa sponsor 1 day ago Hiring now · 86%

Technical Lead

≈ $82k – $167k per year (Estimated) • Lead • Hybrid (Cheltenham, United Kingdom) • Staff
Node JS
TypeScript
Java
SQL
Python
JavaScript
Databases
DynamoDB
PostgreSQL
Weaviate
Milvus
Pinecone
ElasticSearch
OpenSearch
AI/ML
RAG
LlamaIndex
Dagster
MLFlow
Prefect
Kubeflow
Hugging Face
Semantic Search
LangChain
DevOps
Amazon EKS
Azure AKS
GitLab
GitHub
Terraform
Kubernetes
Azure
CI/CD
AWS
GCP
Analytics
ETL/ELT
Management
Agile
+26
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Version 1

version1.com
version1.com • HQ: Dublin, Ireland • Managed IT Services (MSP) • Enterprise Apps Implementation Partners • IT Consulting & Digital Transformation • 1001-5000 employees • Est. 1996 • IT services • Trust B • Hiring 129, 13 new
HQ: Dublin, Ireland • Managed IT Services (MSP) • Enterprise Apps Implementation Partners • IT Consulting & Digital Transformation • 1001-5000 employees • Est. 1996 • IT services • Trust B • Hiring 129, 13 new
Version 1 is an Irish technology services company founded in Dublin in 1996 that delivers digital transformation, enterprise applications and managed services to public sector bodies and large private organisations. Its practices cover cloud migration on the major hyperscalers, Oracle and Microsoft enterprise applications, custom software engineering, data and artificial intelligence, and infrastructure managed services, with much of its revenue coming from British and Irish government contracts. The company is headquartered in Dublin, employs several thousand people across Ireland, the United Kingdom, India and North America, and is majority owned by Partners Group.
Tom O · Directors · decision-maker
Ravi Kumarnarasinga · Directors · decision-maker
Ganesh Kalyanaraman · Directors · decision-maker
Patrick Cooney · Directors · decision-maker
No careers mailbox known
Verified live · 1 hour ago 1 day ago Likely open · 63%

Java Developer

≈ $86k – $148k per year (Estimated) • Staff+ • 10+ years exp • Hybrid (Belfast, United Kingdom) • Bachelor's Degree • Full-Time • Senior
Java
SQL
Python
Java
Spring Framework
Hibernate
Databases
Oracle
MySQL
Snowflake
PostgreSQL
DevOps
AWS Lambda
Amazon EC2
AWS Step Functions
Amazon S3
Rest API
AWS
+7
Apply
Verified live · 1 hour ago 1 day ago Likely open · 63%

BizTalk Developer (BizTalk Server 2020)

≈ $108k – $186k per year (Estimated) • Staff+ • 10+ years exp • Hybrid (London, United Kingdom) • Full-Time • Senior
C#
C#
.NET
Databases
Snowflake
DevOps
Azure
AWS
SOAP
Azure DevOps
Management
SharePoint
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Verified live · 1 hour ago 5 days ago Likely open · 63%

.Net Tech Lead

≈ $70k – $141k per year (Estimated) • Lead • 10+ years exp • Hybrid (London, United Kingdom) • Full-Time • Senior
C#
TypeScript
JavaScript
C#
.NET
Databases
Azure Cosmos DB
Snowflake
Frontend
Angular
DevOps
OpenShift
Packer
Ansible
Jenkins
Rest API
Docker
Kubernetes
Azure
CI/CD
AWS
Management
Agile
+10
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Addepar

addepar.com
addepar.com • HQ: Mountain View, United States • Financial Data & Market Intelligence • Financial Software & Embedded Finance • 1001-5000 employees • Est. 2009 • Trust A • Hiring 99, 7 new
HQ: Mountain View, United States • Financial Data & Market Intelligence • Financial Software & Embedded Finance • 1001-5000 employees • Est. 2009 • Trust A • Hiring 99, 7 new
Addepar is an American financial technology company founded in 2009 by early Palantir employees who found that wealthy families and their advisers had no reliable way to see all their assets in one place. Its platform aggregates holdings across custodians, private funds, property and operating businesses, then reports performance and exposure across the whole picture, which conventional portfolio systems built for listed securities cannot do. Headquartered in Mountain View and privately held, it serves registered investment advisers, family offices and private banks tracking trillions of dollars in assets.
Mitchell Bompey · Executive Officer · decision-maker
Stephen Snyder · Executive Officer · decision-maker
Eric Poirier · Chief Executive Officer · decision-maker
Joe Lonsdale · Co-founder · founder
Careers mailbox is known
Verified live · 1 hour ago 1 day ago Hiring now · 90%

Sr. Software Engineer - Portfolio Data Workflows

≈ $70k – $137k per year (Estimated) • Senior • In office (Edinburgh, United Kingdom) • Senior
JavaScript
SQL
Databases
ElasticSearch
DevOps
AWS
Apply
Verified live · 1 hour ago 9 days ago Hiring now · 90%

Sr. Software Engineer - Customer Facing Applied AI

≈ $73k – $143k per year (Estimated) • Senior • In office (Edinburgh, United Kingdom) • Bachelor's Degree • Senior
SQL
Python
Java
AI/ML
Function Calling
OpenAI Codex
Structured Outputs
Prompt Engineering
Claude Code
Claude
RAG
LLM
AI Agents
DevOps
AWS
+5
Apply
Verified live · 1 hour ago 9 days ago Hiring now · 90%

Software Engineer - Customer Facing Applied AI

≈ $61k – $150k per year (Estimated) • In office (Edinburgh, United Kingdom) • Bachelor's Degree
SQL
Python
Java
AI/ML
Function Calling
OpenAI Codex
Structured Outputs
Prompt Engineering
Claude Code
Claude
RAG
LLM
AI Agents
DevOps
AWS
+5
Apply

Ably Realtime

ably.com
ably.com • HQ: London, United Kingdom • Developer Tools • Integration & API Management • 51-200 employees • Est. 2016 • Trust B • Hiring 6, 2 new
HQ: London, United Kingdom • Developer Tools • Integration & API Management • 51-200 employees • Est. 2016 • Trust B • Hiring 6, 2 new
Ably is the realtime platform built for scale and reliability. Power live chat, messaging, collaborative apps, and AI experiences that never drop.
No named decision-maker yet.
Careers mailbox is known
Verified live · 3 hours ago Visa sponsor 1 day ago Hiring now · 86%

Senior Software Engineer, Backoffice Platform

≈ $85k – $160k per year (Estimated) • Equity • Senior • London • Remote (United Kingdom) • Senior
Ruby
Ruby
Ruby on Rails
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Open 143 daysVerified live · 3 hours ago Visa sponsor 4 months ago Long shot · 11%

Software Engineer, Pub/Sub

≈ $70k – $171k per year (Estimated) • Equity • London • Remote (United Kingdom)
Go
Node JS
JavaScript
AI/ML
AI Agents
Apply
Open 291 daysVerified live · 3 hours ago Visa sponsor 9 months ago Long shot · 6%

Staff Tech Lead, Web & Developer Products

≈ $92k – $182k per year (Estimated) • Equity • Lead • London • Remote (United Kingdom) • Staff
TypeScript
AI/ML
LLM Guardrails
Apply

Kaluza

kaluza.com
kaluza.com • HQ: London, United Kingdom • Billing & Subscription Management • Smart Grid • Energy Management • 51-200 employees • Est. 2019 • Startup • Trust B • Hiring 36, 6 new
HQ: London, United Kingdom • Billing & Subscription Management • Smart Grid • Energy Management • 51-200 employees • Est. 2019 • Startup • Trust B • Hiring 36, 6 new
Kaluza is a London energy software company that grew out of OVO Energy and became a separate business in 2019. Its platform runs retail energy billing and orchestrates flexible devices such as electric vehicles and heat pumps to shift demand. The company licenses the technology to energy retailers in Britain, Europe, Japan and Australia.
No named decision-maker yet.
No careers mailbox known
Verified live · 4 min ago 1 day ago Hiring now · 90%

Senior Software Engineer

≈ $94k – $184k per year (Estimated) • Senior • Hybrid (Bristol, Edinburgh, London, United Kingdom) • Full-Time • Senior
Scala
TypeScript
AI/ML
Cursor
Model Context Protocol
Claude Code
AI Agents
DevOps
GCP
AWS
Apply
Top 25% payVerified live · 4 min ago 11 days ago Hiring now · 78%

Principal Software Engineer

$161k – $214k per year • Lead • Hybrid (Bristol, Edinburgh, London, United Kingdom) • Full-Time • Principal
CI/CD
AWS
Apply
Verified live · 4 min ago 23 days ago Likely open · 65%

Staff Engineer (Global Billing, Payments & API)

$130k – $163k per year • Staff+ • Hybrid (Bristol, London, Edinburgh, United Kingdom) • Full-Time • Staff
Go
DevOps
API Gateway
Apply
Machines can read this selection · checked 13:33 UTC
Backend Developer Jobs in United Kingdom
Frequently asked questions
How many Backend Developer jobs in United Kingdom are available on Alion?
There are currently 1489 active listings from 580 hiring companies on Alion, refreshed daily.
What salary do Backend Developer jobs in United Kingdom pay?
The average salary is around $187,986 per year based on the current listings.
Are remote options available for Backend Developer jobs in United Kingdom?
Yes, many of these roles offer remote or hybrid work, and you can filter listings by remote, relocation and visa sponsorship.
How do I apply for Backend Developer jobs in United Kingdom?
Open any listing on Alion and apply directly with the employer through the provided link - no lengthy sign-up required.