Backend Developer Jobs in London

Backend Developer jobs in London hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $213,225/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.

London
AI/ML
Data Science
Backend
Frontend
Mobile
DevOps
Web3
Games
Hardware
Robotics
Security
QA
Executive
Networking
Product
Design
Analytics
Support
Enterprise Apps
Quantum

Gener8

gener8.net
Gener8 provides end-to-end guidance and engineering solutions to help innovators commercialize their product development ideas.
gener8.net • London • New York • Health & Medical Electronics • Medical Devices • Industrial Design • Est. 2002
London • New York • Health & Medical Electronics • Medical Devices • Industrial Design • Est. 2002
$92k – $224k per year (Estimated) • Senior • 5+ years exp • Remote (United States, United Kingdom) • Visa sponsorship • Master's Degree • Senior
Go
SQL
Databases
PostgreSQL
Redis
DevOps
Docker
GCP
gRPC
Kubernetes
GitHub
Management
Jira
Slack
QA
Swagger
Apply
Verified live · 1 day ago 2 months ago

Senior Backend Engineer

$94k – $171k per year (Estimated) • Senior • 5+ years expRemote/Hybrid (London, United Kingdom) • Full-Time • Senior • English: B2
Go
SQL
Databases
PostgreSQL
Redis
DevOps
Docker
GCP
gRPC
Kubernetes
GitHub
Management
Jira
Slack
QA
Swagger
Apply
Report

Walmart

walmart.com
Walmart is a multinational retail corporation operating a vast global chain of hypermarkets, discount department stores, and grocery stores. Founded in 1962 by Sam Walton and headquartered in Bentonville, Arkansas, the company is one of the world's largest businesses by revenue and a dominant force in brick-and-mortar and online retail. Today, it integrates its physical store network with a growing e-commerce ecosystem, offering low prices on groceries, general merchandise, and digital services to millions of customers daily.
walmart.com • HQ: Bentonville, United States • Information Technology • Commerce • Retail & Shop Systems • E-commerce Platforms • 11-50 employees • Est. 1962
HQ: Bentonville, United States • Information Technology • Commerce • Retail & Shop Systems • E-commerce Platforms • 11-50 employees • Est. 1962
$19k – $53k per year (Estimated) • Middle • 2+ years expBengaluru • Remote (India, United States, United Kingdom) • Visa sponsorship • Bachelor's Degree • Senior
Java
SQL
Java
Hibernate
Spring Boot
Spring Framework
Spring MVC
Databases
Apache Kafka
DevOps
Azure
Apply
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Virtu-Hire

virtu-hire.com
virtu-hire.com • HQ: Johannesburg, South Africa • Professional Services • Human Resources
HQ: Johannesburg, South Africa • Professional Services • Human Resources
$85k – $207k per year (Estimated) • Senior • 5+ years exp • Remote (United Kingdom) • Visa sponsorship • Master's Degree • Senior
PHP
PHP
WordPress
Design
Webflow
Apply
Verified live · 3 hours ago 2 months ago

Full Stack Developer (UK hours)

Remote (United Kingdom)
PHP
SQL
C#
JavaScript
PHP
WordPress
C#
ASP.NET Core
Databases
MS SQL
AI/ML
LLM
Frontend
JQuery
Mobile
Clean Architecture
DevOps
Azure
Azure DevOps
CI/CD
Git
GitHub
Cybersecurity
GDPR
Apply
Verified live · 3 hours ago 2 months ago

Full-Stack Web Developer (UK hours)

Senior • 5+ years exp • Remote (United Kingdom) • Senior
PHP
PHP
WordPress
Design
Webflow
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Aristocrat Leisure

aristocrat.com
Aristocrat Leisure is an Australian gambling technology and entertainment company that stands as one of the world's largest manufacturers of slot machines and electronic gaming systems. Founded in 1953 and headquartered in Sydney, the enterprise designs, manufactures, and distributes land-based gaming hardware, casino management software, and mobile social casino games. By continually expanding its global footprint across North America, Europe, and Asia-Pacific, it delivers interactive gaming content and digital solutions to regulated operators worldwide.
aristocrat.com • HQ: Sydney, Australia • Mobile Games • Gaming • iGaming & Gambling • 501-1000 employees
HQ: Sydney, Australia • Mobile Games • Gaming • iGaming & Gambling • 501-1000 employees
Verified live · 6 hours ago 2 months ago

Senior Engineer – Python

$84k – $152k per year (Estimated) • Senior • 3+ years expRemote/Hybrid (London, United Kingdom) • Bachelor's Degree • Full-Time • Senior
Python
C#
C++
Java
SQL
Databases
Snowflake
AI/ML
AI Agents
Copilot
Analytics
Power BI
Management
Power Automate
QA
Selenium
Apply
Open 131 dayVerified live · 6 hours ago 5 months ago

Senior Software Developer

$80k – $144k per year (Estimated) • Senior • 8+ years expRemote/Hybrid (London, United Kingdom) • Full-Time • Senior
Java
Java
Spring Boot
DevOps
AWS
Azure
CI/CD
GCP
Apply
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Cisco Systems

cisco.com
Cisco Systems is an American multinational digital communications and technology conglomerate headquartered in San Jose, California. Founded in 1984 by Stanford computer scientists, Cisco is the world's largest networking equipment provider and a global leader in cybersecurity, cloud infrastructure, and enterprise software.
cisco.com • HQ: San Jose, United States • Enterprise Networks • Artificial Intelligence • Log Analytics • Government • AI Infrastructure • 1001-5000 employees • Est. 1984
HQ: San Jose, United States • Enterprise Networks • Artificial Intelligence • Log Analytics • Government • AI Infrastructure • 1001-5000 employees • Est. 1984
$78k – $181k per year (Estimated) • Middle • 3+ years expRemote/Hybrid (London, United Kingdom) • Bachelor's Degree • Full-Time • Middle
C++
Java
Python
Rust
Databases
NATS
AI/ML
AI Agents
DevOps
Docker
CI/CD
Git
Apply
$109k – $197k per year (Estimated) • Senior • 10+ years expRemote/Hybrid (London, United Kingdom) • Bachelor's Degree • Full-Time • Senior
C#
C++
DevOps
Docker
CI/CD
Git
Kubernetes
Apply
Report

Zencoder

zencoder.ai
About us We are changing the way developers work Zencoder started with a question: what if software could do the repetitive work it's only been tracking? We're a team of 70+ engineers, researchers, and builders trying to answer it.
zencoder.ai • AI Agents • Artificial Intelligence
AI Agents • Artificial Intelligence
Open 110 daysVerified live · 1 day ago 4 months ago

Staff Software Engineer

$117k – $243k per year (Estimated) • Equity • Staff+ • 10+ years exp • Remote (Europe) • Staff
JavaScript
Kotlin
AI/ML
AI Agents
DevOps
AWS
CI/CD
GCP
Shift-Left
Cybersecurity
Shift-Left Security
Apply
Open 293 daysVerified live · 1 day ago 10 months ago

Senior Software Engineer

$69k – $195k per year (Estimated) • Equity • Senior • 10+ years exp • Remote (Europe) • Senior
Java
Kotlin
TypeScript
AI/ML
AI Agents
Apply
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Runa

runa.io
The global payout platform built for scale. Send instant digital payouts worldwide through one API, with 99.999% uptime and built-in security.
runa.io • London • Coupons, Deals & Cashbacks • Commerce • Gift Cards & Loyalty Programs
London • Coupons, Deals & Cashbacks • Commerce • Gift Cards & Loyalty Programs
Verified live · 2 days ago 2 months ago

Senior Software Engineer (Java / Kotlin)

$93k – $169k per year (Estimated) • Senior • In office (London, United Kingdom) • Full-Time • Senior
Java
Kotlin
SQL
Java
Spring Boot
Databases
Apache Kafka
DevOps
Amazon EKS
AWS
Helm
Kubernetes
Terraform
Amazon EventBridge
Apply
Verified live · 2 days ago 2 months ago

Senior Software Engineer

$92k – $166k per year (Estimated) • Senior • 5+ years expIn office (London, United Kingdom) • Full-Time • Senior
JavaScript
Python
TypeScript
Databases
Amazon Aurora
DynamoDB
PostgreSQL
Redis
DevOps
AWS
AWS Lambda
AWS Step Functions
Apply
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Synthesia

synthesia.io
Synthesia is an AI video generation platform that enables users to create professional, studio-quality videos from plain text scripts without needing traditional cameras or film crews. The platform utilizes hyper-realistic digital avatars and natural synthetic voice models to deliver localized video content across dozens of languages in minutes. Widely adopted by corporate enterprises, Synthesia streamlines corporate training, customer onboarding, and internal communications at scale.
synthesia.io • HQ: London, United Kingdom • Software • Artificial Intelligence • Generative Video • Video & Image Processing Software • 51-200 employees • Est. 2017
HQ: London, United Kingdom • Software • Artificial Intelligence • Generative Video • Video & Image Processing Software • 51-200 employees • Est. 2017
$200k per year • Equity • Lead • 7+ years expIn office (London, United Kingdom) • Relocation • Visa sponsorship • PhD • Full-Time • Principal
Python
AI/ML
Claude
Cursor
AI Agents
LLM
DevOps
Datadog
AWS
Design
Webflow
Management
Miro
Apply
$124k per year • Equity • Lead • 7+ years expLondon • Remote (United Kingdom) • Relocation • Visa sponsorship • Full-Time • Staff
Python
AI/ML
AI Agents
LLM
DevOps
Datadog
Design
Webflow
Management
Miro
Apply
Verified live · 1 day ago 8 months ago

Principal Backend Engineer

$105k – $211k per year (Estimated) • Equity • Lead • 10+ years expRemote/Hybrid (London, United Kingdom) • Full-Time • Principal
Python
AI/ML
AI Agents
LLM
DevOps
Datadog
Design
Webflow
Management
Miro
Apply
Report

Pear VC

pear.vc
Pear VC is a venture capital firm specializing in pre-seed and seed-stage investments in startups. Founded by Pejman Nozad and Mar Hershenson, the firm provides hands-on support in areas such as product development, recruiting, fundraising, and go-to-market strategy. Pear has backed companies including DoorDash, Gusto, Aurora Solar, Vanta, and Guardant Health.
pear.vc • HQ: San Francisco, United States • Financial Services • Venture Capital
HQ: San Francisco, United States • Financial Services • Venture Capital
$177k – $293k per year (Estimated) • Equity • Senior • 5+ years expNew York • Remote (United States, India, United Kingdom) • Visa sponsorship • Bachelor's Degree • Senior
Python
SQL
Python
Django
FastAPI
Flask
SQLAlchemy
Celery
Databases
PostgreSQL
Apache Kafka
AI/ML
Embeddings
LLM
RAG
AI Agents
LLMOps
LangChain
LlamaIndex
PyTorch
DevOps
AWS
Terraform
Apply
Open 115 daysVerified live · 12 hours ago 4 months ago

Full Stack Engineer

$103k – $232k per year (Estimated)In office (London, United Kingdom) • Full-Time
Node JS
Python
TypeScript
JavaScript
Databases
PostgreSQL
AI/ML
LLM
AI Agents
DevOps
AWS
CI/CD
Apply
Open 138 daysVerified live · 12 hours ago 5 months ago

Software Engineering Intern

Intern • In office (London, United Kingdom) • Relocation • Internship • Intern
Node JS
Python
TypeScript
JavaScript
Databases
PostgreSQL
AI/ML
LLM
AI Agents
Frontend
React.js
DevOps
AWS
CI/CD
Apply
Report

Experian

experian.com
Experian is a global information services and data analytics company best known as one of the "Big Three" credit reporting agencies (alongside Equifax and TransUnion). Headquartered in Dublin, Ireland, with operational centers in the US, UK, and Brazil, the firm collects and manages credit and financial data on hundreds of millions of consumers and businesses worldwide.
experian.com • HQ: Dublin, Ireland • Cybersecurity • Fraud Detection • Financial Services • Data & Analytics • 5000+ employees
HQ: Dublin, Ireland • Cybersecurity • Fraud Detection • Financial Services • Data & Analytics • 5000+ employees
Verified live · 2 hours ago 2 months ago

Engineering Director (ID&F) - Java, .NET, AWS

$66k – $183k per year (Estimated) • Executive • Remote/Hybrid (London, United Kingdom) • Full-Time • Architect
Java
C#
C#
.NET
AI/ML
Claude
Cursor
DevOps
Amazon EKS
AWS
Kubernetes
Apply
Report

GraphAware

graphaware.com
GraphAware specializes in providing graph database technology and consulting services. They focus on leveraging graph-based data models to solve complex data challenges for businesses, enabling enhanced data insights and performance.
graphaware.com • Prague • Data & Analytics • Information Technology • Database Management
Prague • Data & Analytics • Information Technology • Database Management
$80k – $92k per year • Senior • 8+ years expPrague • Remote (United Kingdom) • Full-Time • Senior
Java
Databases
Neo4j
PostgreSQL
Apache Kafka
AI/ML
Knowledge Graph
Mobile
Clean Architecture
DevOps
CI/CD
Docker
Apply
Report

Zego

zego.com
Zego was founded in 2016 and is an insurance policy provider. Zego currently operates in the UK, Ireland, France, Belgium, and Spain.
zego.com • HQ: London, United Kingdom • FinTech • Financial Services • Insurance
HQ: London, United Kingdom • FinTech • Financial Services • Insurance
2 months ago

Lead Backend Engineer

$94k – $189k per year (Estimated) • Equity • Lead • Remote/Hybrid (London, United Kingdom) • Visa sponsorship • Bachelor's Degree • Staff
Python
DevOps
CI/CD
Apply
Open 126 daysVerified live · 1 day ago 5 months ago

Software Engineer

$80k – $181k per year (Estimated)In office (London, United Kingdom) • Full-Time
Python
Databases
Snowflake
AI/ML
Claude
Claude Code
Design
Figma
Management
Zapier
Apply
Open 407 daysVerified live · 1 day ago 1 year ago

Lead Backend Engineer

$94k – $189k per year (Estimated) • Lead • In office (London, United Kingdom) • Full-Time • Staff
Python
Databases
Snowflake
AI/ML
Claude
Claude Code
DevOps
CI/CD
Design
Figma
Management
Zapier
Apply
Report

Zooplus

zooplus.com
Zooplus is a leading European online retailer specializing in pet food, supplies, and accessories for a wide variety of animals. The company offers an extensive catalog of trusted brands alongside private label products, catering to the daily needs, health, and well-being of pets. With a robust logistics network operating across dozens of countries, it delivers convenient home shopping, subscription services, and specialized pet care advice to millions of customers.
zooplus.com • London • Munich • Madrid • Vienna • Kraków • Animal Nutrition • Consumer Goods • Pet Care • Est. 1999
London • Munich • Madrid • Vienna • Kraków • Animal Nutrition • Consumer Goods • Pet Care • Est. 1999
$81k – $147k per year (Estimated) • Senior • Remote/Hybrid (London, United Kingdom) • Visa sponsorship • Bachelor's Degree • Senior
Java
Kotlin
Databases
ElasticSearch
PostgreSQL
Redis
DevOps
AWS
CI/CD
Docker
Git
Grafana
Jenkins
Kibana
Kubernetes
Prometheus
Rest API
Terraform
Apply
Report

Unmind

unmind.com
Unmind provides a B2B mental health platform that delivers clinically-backed tools and training for organisations. Unmind is based out of London, United Kingdom.
unmind.com • London • Health Care • Mental Health
London • Health Care • Mental Health
2 months ago

Technical Lead

$95k – $190k per year (Estimated) • Lead • London • Remote (United Kingdom) • Visa sponsorship • Bachelor's Degree • Staff
Go
Node JS
Python
SQL
TypeScript
JavaScript
AI/ML
Claude
Claude Code
Frontend
GraphQL
React.js
Apply
Verified live · 2 days ago 2 months ago

Technical Lead

$122k – $156k per year • Lead • Remote/Hybrid (London, United Kingdom) • Full-Time • Staff
Go
JavaScript
Node JS
Python
SQL
TypeScript
AI/ML
Claude
Claude Code
Frontend
GraphQL
React.js
Apply
Report

GRAIL

grail.com
GRAIL is a healthcare and biotechnology company headquartered in Menlo Park, California, and founded in 2016. The company develops and commercializes the Galleri multi-cancer early detection test, which uses next-generation sequencing and machine learning to identify signals from over 50 types of cancer through a single blood draw. It operates as an independent publicly traded entity following its spin-off from Illumina, focusing on clinical research and partnerships with healthcare systems and biopharmaceutical companies primarily in the United States and United Kingdom.
grail.com • HQ: Menlo Park, United States • Personalized Medicine • Medical AI • Artificial Intelligence • Molecular Diagnostics • Genomics • Diagnostics • Biotechnology • Health Care • Est. 2016
HQ: Menlo Park, United States • Personalized Medicine • Medical AI • Artificial Intelligence • Molecular Diagnostics • Genomics • Diagnostics • Biotechnology • Health Care • Est. 2016
Verified live · 7 hours ago 2 months ago

Staff Software Engineer (Lab Technology) #4907

$131k – $283k per year (Estimated) • Staff+ • 7+ years expIn office (London, United Kingdom) • Bachelor's Degree • Full-Time • Staff
Python
SQL
DevOps
GCP
Cybersecurity
HIPAA
Analytics
ETL/ELT
Apply
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Camunda

camunda.com
Camunda is a software company headquartered in Berlin, Germany, that was founded in 2008. The company develops an open platform for process orchestration designed to coordinate AI agents, human workflows, and technical systems using industry standards like BPMN and DMN. It operates globally, serving more than 750 enterprise customers including major financial institutions and technology firms through its cloud-native and self-managed automation solutions.
camunda.com • HQ: Berlin, Germany • Cloud Computing • Information Technology • Middleware Software • Artificial Intelligence • AI Agents • Software • Business Process Automation (BPA) • 201-500 employees • Est. 2008
HQ: Berlin, Germany • Cloud Computing • Information Technology • Middleware Software • Artificial Intelligence • AI Agents • Software • Business Process Automation (BPA) • 201-500 employees • Est. 2008
Top 25% payVerified live · 5 hours ago 2 months ago

Senior Software Engineer, Backend

$144k – $232k per year • Equity • Senior • 5+ years expLondon • Remote (United States, Germany, United Kingdom, Canada, Czech Republic) • Full-Time • Senior
Go
Java
AI/ML
AI Agents
DevOps
Chaos Engineering
Grafana
Helm
Kubernetes
Prometheus
Apply
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Circuithub

circuithub.com
CircuitHub Inc. is a Web-based contract manufacturer and design hosting service. The company specializes in rapid, turn-key assembly for prototyping and short-run production of electronic goods.
circuithub.com • Cambridge • Deerfield • PCB & Assembly • Manufacturing • Electronics Manufacturing • 51-200 employees
Cambridge • Deerfield • PCB & Assembly • Manufacturing • Electronics Manufacturing • 51-200 employees
Verified live · 1 day ago 2 months ago

Haskell Engineer

$95k – $176k per year • Remote (United States, United Kingdom) • Full-Time
Haskell
Databases
PostgreSQL
AI/ML
Computer Vision
OpenCV
PyTorch
DevOps
AWS
Robotics
Path Planning
Apply
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Enode

enode.com
Enode's APIs enable you to instantly connect users' energy devices - including EVs, solar inverters, home batteries and thermostats - to your app. You can surface data, and then take action with it. Our out-of-the-box algorithms allow you to contr...
enode.com • Oslo • Hardware • Internet of Things • Energy & Utilities
Oslo • Hardware • Internet of Things • Energy & Utilities
Verified live · 1 day ago 2 months ago

Senior Software Engineer (Home Energy)

$68k – $192k per year (Estimated) • Senior • Remote (Europe) • Full-Time • Senior
TypeScript
Databases
PostgreSQL
TimescaleDB
DevOps
AWS
Apply
Verified live · 1 day ago 2 months ago

Software Engineer (Connect Platform)

Remote (Europe) • Full-Time
JavaScript
TypeScript
Databases
PostgreSQL
Frontend
React.js
DevOps
CI/CD
Platform Engineering
AWS
CloudFormation
Docker
Apply
Verified live · 1 day ago 2 months ago

Senior Software Engineer (Connect Platform)

$69k – $195k per year (Estimated) • Senior • Remote (Europe) • Full-Time • Senior
TypeScript
Databases
PostgreSQL
DevOps
CI/CD
Platform Engineering
AWS
CloudFormation
Docker
Apply
Report

Allica Bank

allica.bank
Allica Bank is a UK challenger bank and digital fintech platform headquartered in London and Milton Keynes, specifically tailored to serve established small and medium-sized enterprises (SMEs with 5–250 employees). Founded in 2019, the bank offers commercial mortgages, asset finance, business growth loans, rewards current accounts, and high-yield savings products. By combining modern digital banking infrastructure with dedicated local relationship managers, Allica addresses the underserved mid-market business sector across the United Kingdom.
allica.bank • HQ: London, Milton Keynes, United Kingdom • FinTech • Financial Services • Banking • Est. 2019
HQ: London, Milton Keynes, United Kingdom • FinTech • Financial Services • Banking • Est. 2019
2 months ago

Sr. Fullstack Engineer

$89k – $216k per year (Estimated) • Senior • Remote (United Kingdom, India, United States) • Senior
JavaScript
Kotlin
TypeScript
Java
Java
Spring Boot
AI/ML
Copilot
Frontend
React.js
DevOps
AWS
Azure
Azure DevOps
CI/CD
GCP
Rest API
GitHub
Apply
Report

BlueOptima

blueoptima.com
BlueOptima provides a "coding effort analytics" platform for developers and managers. It helps create better quality code. Developers can have visibility over their efforts and can receive feedback on it.
blueoptima.com • Bengaluru • London • Belfast • Cambridge • Information Technology • Data & Analytics • Code Intelligence • 51-200 employees • Est. 2006
Bengaluru • London • Belfast • Cambridge • Information Technology • Data & Analytics • Code Intelligence • 51-200 employees • Est. 2006
2 months ago

Full Stack Developer

$88k – $216k per year (Estimated) • Senior • 5+ years exp • Remote (India, United Kingdom) • Visa sponsorship • Bachelor's Degree • Staff
JavaScript
SQL
TypeScript
Java
Java
Spring Boot
Frontend
Angular
React.js
D3.js
DevOps
CI/CD
Jenkins
Apply
Report
Backend Developer Jobs in London
Frequently asked questions
How many Backend Developer jobs in London are available on Alion?
There are currently 682 active listings from 259 hiring companies on Alion, refreshed daily.
What salary do Backend Developer jobs in London pay?
The average salary is around $213,225 per year based on the current listings.
Are remote options available for Backend Developer jobs in London?
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 London?
Open any listing on Alion and apply directly with the employer through the provided link - no lengthy sign-up required.