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 $213,465/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.

London
AI/ML
Software
Data
Security
DevOps & Cloud
Leadership
Product
Design
Fintech
Hardware & Chips
Defense
Aerospace
Biotech
Energy
Robotics
Automotive
MedTech
Science

Samsara

samsara.com
samsara.com • HQ: San Francisco, United States • Industrial IoT (IIoT) • IoT Platforms & Solutions • Fleet Management • 1001-5000 employees • Est. 2015 • NYSE: IOT • Trust B • Hiring 303, 62 new
HQ: San Francisco, United States • Industrial IoT (IIoT) • IoT Platforms & Solutions • Fleet Management • 1001-5000 employees • Est. 2015 • NYSE: IOT • Trust B • Hiring 303, 62 new
Samsara is an American industrial internet of things company that sells a connected operations cloud for fleets and physical operations. Its vehicle gateways, AI dash cams, asset trackers and equipment sensors feed software for telematics, driver safety, compliance and electronic logging, routing, maintenance and site monitoring, used by transportation, construction, field services, utilities, public sector and manufacturing customers. Founded in 2015 and listed on the New York Stock Exchange, it is headquartered in San Francisco, California, United States.
John Bicket · Executive Officer, Director · decision-maker
Sanjit Biswas · Executive Officer, Director · decision-maker
Marc Andreessen · Director
Hemant Taneja · Director
Careers mailbox is known
Reposted ×2Verified live · 1 hour ago 3 months ago Long shot · 9%

Sr. Software Engineer, Cloud Platform

≈ $103k – $210k per year (Estimated) • Senior • 6+ years exp • London • Remote (United Kingdom) • Bachelor's Degree • Senior
Java
Python
Databases
OpenSearch
Apache Kafka
DevOps
Amazon EKS
Amazon ECS
Terraform
Kubernetes
AWS
+1
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Monex

monexglobal.com
monexglobal.com • HQ: London, United Kingdom • Payment Processing & Gateways • Currency Exchange & FX Payments • 501-1000 employees • Trust A • Hiring 30, 1 new
HQ: London, United Kingdom • Payment Processing & Gateways • Currency Exchange & FX Payments • 501-1000 employees • Trust A • Hiring 30, 1 new
Monex is a global financial solutions provider specialising in foreign exchange risk management and international payments for corporate and institutional clients. It has offices in Europe, North America and Asia and hires FX sales executives, options dealers and product managers. The company is headquartered in London, United Kingdom.
No named decision-maker yet.
Careers mailbox is known
Verified live · 1 day ago Visa sponsor 3 months ago Fading · 27%

Lead Software Engineer (Product)

≈ $101k – $203k per year (Estimated) • Lead • 5+ years exp • In office (London, United Kingdom) • Full-Time • Staff
Platform Engineering
Incident Management
CI/CD
Cybersecurity
GDPR
Apply

Creditstar Group

creditstar.com
creditstar.com • HQ: Tallinn, Estonia • Consumer Loans & Pawnshops • 1-10 employees • Est. 2009 • Trust B • Hiring 8
HQ: Tallinn, Estonia • Consumer Loans & Pawnshops • 1-10 employees • Est. 2009 • Trust B • Hiring 8
Creditstar Group is a data-driven European fintech providing digital consumer credit and investment products across 32 countries.
No named decision-maker yet.
No careers mailbox known
Open 110 daysVerified live · 1 hour ago 3 months ago Long shot · 9%

Senior Full Stack Engineer - PHP

≈ $76k – $155k per year (Estimated) • Senior • London • Remote (United Kingdom) • Full-Time • Senior
PHP
Node JS
TypeScript
JavaScript
PHP
Yii
Databases
MySQL
PostgreSQL
Frontend
JQuery
React.js
DevOps
Datadog
Docker
AWS
+4
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Hived

hived.space
hived.space • HQ: London, United Kingdom • Transportation & Logistics • Delivery • 201-500 employees • Est. 2021 • Startup • Hiring 19, 3 new
HQ: London, United Kingdom • Transportation & Logistics • Delivery • 201-500 employees • Est. 2021 • Startup • Hiring 19, 3 new
Hived is a London logistics company founded in 2021 that runs an all-electric parcel delivery network. It operates its own vehicles and routing software rather than subcontracting to self-employed drivers, which gives it control over service quality and emissions. The company delivers for online retailers across London and the south east.
No named decision-maker yet.
No careers mailbox known
Verified live · 2 hours ago Visa sponsor 3 months ago Long shot · 16%

Lead Backend Engineer (Routing Squad)

≈ $96k – $194k per year (Estimated) • Lead • 5+ years exp • Hybrid (London, United Kingdom) • Full-Time • Staff
Go
TypeScript
Python
Databases
DynamoDB
Google BigQuery
DevOps
Loki
AWS Lambda
Amazon EventBridge
Prometheus
Grafana
Windows
GCP
AWS
Analytics
Looker
+6
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Causaly

causaly.com
causaly.com • HQ: London, United Kingdom • Bioinformatics • Drug Discovery AI • Knowledge Graphs • 51-200 employees • Est. 2018 • Startup • Hiring 6
HQ: London, United Kingdom • Bioinformatics • Drug Discovery AI • Knowledge Graphs • 51-200 employees • Est. 2018 • Startup • Hiring 6
Causaly is the fastest way to find evidence, explore hidden connections and make new predictions in biomedical science. The company provides AI-powered software for reading medical information.
Joannis Kiahopoulos · Executive Officer, Director · decision-maker
Artur Saudabayev · Executive Officer, Director · decision-maker
Caroline Xie · Director
Carlos Gonzalez-Cadenas · Director
Careers mailbox is known
Verified live · 4 hours ago Visa sponsor 3 months ago Long shot · 17%

Staff Software Engineer - Agentic Workflows

≈ $169k – $300k per year (Estimated) • Staff+ • Hybrid (London, United Kingdom) • Full-Time • Staff
Node JS
TypeScript
JavaScript
Python
Python
FastAPI
Databases
PostgreSQL
ElasticSearch
Redis
AI/ML
Structured Outputs
Knowledge Graph
LLM
LangGraph
Fine-tuning
Langfuse
LangChain
OpenAI
Machine Learning
Frontend
GraphQL
Zod
React.js
DevOps
GCP
Azure
OpenTelemetry
Datadog
ArgoCD
GitHub Actions
Terraform
Git
Docker
Kubernetes
+22
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Verified live · 4 hours ago Visa sponsor 3 months ago Long shot · 17%

Senior Software Engineer - Agentic Workflows

≈ $104k – $201k per year (Estimated) • Senior • Hybrid (London, United Kingdom) • Full-Time • Senior
Node JS
TypeScript
JavaScript
Python
Python
FastAPI
Databases
PostgreSQL
ElasticSearch
Redis
AI/ML
Structured Outputs
Knowledge Graph
LLM
LangGraph
Fine-tuning
Langfuse
LangChain
OpenAI
Machine Learning
Frontend
GraphQL
Zod
React.js
DevOps
GCP
Azure
OpenTelemetry
Datadog
ArgoCD
GitHub Actions
Terraform
Git
Docker
Kubernetes
+22
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Chainlink

chain.link
chain.link • HQ: San Francisco, United States • Financial Services • Blockchain & Crypto • Blockchain Infrastructure • 11-50 employees • Est. 2017 • Startup • Trust B • Hiring 12, 1 new
HQ: San Francisco, United States • Financial Services • Blockchain & Crypto • Blockchain Infrastructure • 11-50 employees • Est. 2017 • Startup • Trust B • Hiring 12, 1 new
Chainlink is a decentralised oracle network launched in 2017 that delivers external data and off-chain computation to smart contracts. Its price feeds underpin a large share of decentralised lending and derivatives markets, and it also provides cross-chain messaging and proof-of-reserve services. Development is led by Chainlink Labs, which works with banks and market infrastructure providers on tokenised asset pilots.
No named decision-maker yet.
No careers mailbox known
Open 113 daysVerified live · 3 hours ago 3 months ago Long shot · 5%

Senior Software Engineer (Chainlink Runtime)

$112k – $145k per year • Senior • London • Remote (United Kingdom) • Full-Time • Senior
Solidity
Go
TypeScript
Web3
Chainlink
Apply

NICE

nice.com
nice.com • HQ: Ra'anana, Israel • AI Agents • Fraud Detection • RegTech, AML & Compliance • Contact Center Software • 5000+ employees • Est. 1986 • Trust A • Hiring 180, 29 new
HQ: Ra'anana, Israel • AI Agents • Fraud Detection • RegTech, AML & Compliance • Contact Center Software • 5000+ employees • Est. 1986 • Trust A • Hiring 180, 29 new
NICE is an Israeli software company founded in 1986 that sells customer engagement and financial crime software to large enterprises. Its CXone platform runs contact centre operations in the cloud, covering routing, workforce management, quality monitoring, conversational analytics and increasingly autonomous agents that handle interactions without a human, while a separate division supplies anti-money-laundering, fraud detection and trade surveillance systems to financial institutions. Headquartered in Ra'anana and listed on both Nasdaq and the Tel Aviv exchange, it holds a leading share of the cloud contact centre market.
Beth Gaspich · Chief Financial Officer · decision-maker
Scott Russell · Chief Executive Officer · decision-maker
No careers mailbox known
Verified live · 16 min ago 3 months ago Long shot · 13%

Senior Software Engineer

≈ $87k – $169k per year (Estimated) • Senior • 5+ years exp • Hybrid (London, Southampton, United Kingdom) • Senior
PowerShell
Python
Python
Poetry
Mypy
Typer
pylint
DevOps
Puppet
Terragrunt
GitLab CI
Windows Server
Configuration Management
Atlantis
Amazon EKS
AWS Lambda
Amazon EC2
Amazon ECS
Amazon CloudWatch
Amazon S3
GitHub Actions
IAM
Jenkins
Terraform
Windows
Azure
CI/CD
AWS
Kubernetes
Cybersecurity
tfsec
Active Directory
QA
Pytest
+22
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Granola

granola.ai
granola.ai • HQ: London, United Kingdom • LLM & Generative AI • Office & Productivity Software • 201-500 employees • Est. 2023 • Startup • Trust C • Hiring 21, 1 new
HQ: London, United Kingdom • LLM & Generative AI • Office & Productivity Software • 201-500 employees • Est. 2023 • Startup • Trust C • Hiring 21, 1 new
Granola is a software company that makes an AI notepad for meetings, which transcribes calls without a bot joining and combines the transcript with the user's own notes into structured summaries. It has grown into a shared team workspace used by companies such as Vercel, Cursor, Lovable and Decagon, and it hires tech ops, sales development, design engineering and strategic finance staff in London and San Francisco. The company is headquartered in London, England, United Kingdom.
Samuel Stephenson · Executive Officer, Director · decision-maker
Christopher Pedregal · Executive Officer, Director · decision-maker
Michael Mignano · Director
Nabeel Hyatt · Director
Careers mailbox is known
Likely inactiveVerified live · 1 hour ago 4 months ago Long shot · 4%

Product Engineer (Transcription)

≈ $84k – $205k per year (Estimated) • In office (London, United Kingdom) • Relocation • Full-Time
Node JS
TypeScript
JavaScript
Node JS
Electron
Frontend
React.js
DevOps
Windows
Apply
Likely inactiveVerified live · 1 hour ago 1 year ago Long shot · 3%

Product Engineer (Full Stack)

$134k – $174k per year • In office (London, United Kingdom) • Relocation • Full-Time
Node JS
TypeScript
JavaScript
Databases
PostgreSQL
AI/ML
Agentic Workflows
Cursor
AI Agents
Frontend
React.js
DevOps
AWS
Terraform
Design
Figma
+3
Apply
Likely inactiveVerified live · 1 hour ago 1 year ago Long shot · 3%

Product Engineer (Backend)

$134k – $174k per year • In office (London, United Kingdom) • Relocation • Full-Time
Node JS
TypeScript
JavaScript
Databases
PostgreSQL
AI/ML
Agentic Workflows
Cursor
LLM
AI Agents
DevOps
AWS Lambda
Terraform
AWS
Design
Figma
+4
Apply

Quantcast

quantcast.com
quantcast.com • HQ: San Francisco, United States • Digital Marketing • Media & Audience Measurement • Advertising • Est. 2006 • Hiring 16, 2 new
HQ: San Francisco, United States • Digital Marketing • Media & Audience Measurement • Advertising • Est. 2006 • Hiring 16, 2 new
Quantcast is an advertising technology company headquartered in San Francisco, California, and founded in 2006. The company runs a demand side platform and audience measurement service that uses machine learning on live web activity to plan, buy, and target programmatic advertising. It also operates a widely deployed consent management platform and works with brands, agencies, and publishers across North America, Europe, and Asia Pacific.
No named decision-maker yet.
Careers mailbox is known
Verified live · 23 min ago Visa sponsor 4 months ago Long shot · 16%

Senior Software Engineer, Payments & Incentives

≈ $100k – $193k per year (Estimated) • Senior • 2+ years exp • In office (London, United Kingdom) • Bachelor's Degree • Full-Time • Senior
Python
Databases
Snowflake
Apache Kafka
DevOps
AWS
Management
Agile
Apply
Verified live · 23 min ago Visa sponsor 4 months ago Long shot · 12%

Software Engineer

≈ $58k – $135k per year (Estimated) • Junior • In office (London, United Kingdom) • Bachelor's Degree • Full-Time • English
Java
Python
Apply

Remitly

remitly.com
remitly.com • HQ: Seattle, United States • Financial Services • Payment Processing & Gateways • Money Transfer & Remittances • 1001-5000 employees • Est. 2011 • Trust A • Hiring 150, 17 new
HQ: Seattle, United States • Financial Services • Payment Processing & Gateways • Money Transfer & Remittances • 1001-5000 employees • Est. 2011 • Trust A • Hiring 150, 17 new
Remitly is an American company founded in Seattle in 2011 that specialises in cross-border remittances sent by migrants to family in their home countries, a market long dominated by cash agent networks charging high fees. Its mobile-first service pays out to bank accounts, mobile wallets and cash pickup locations across more than one hundred and seventy countries, and it competes on transparent pricing, delivery speed and the reliability of the last mile rather than on branch coverage. Headquartered in Seattle and listed on Nasdaq, it has expanded into multi-currency accounts and financial products aimed at the same customers.
Matt Oppenheimer · Co-founder and Chief Executive Officer · decision-maker
Hemanth Munipalli · Executive Officer · decision-maker
Saema Somalya · Executive Officer · decision-maker
Hilton Hewitt · Executive Officer · decision-maker
No careers mailbox known
Verified live · 1 hour ago Visa sponsor 4 months ago Long shot · 11%

Senior AI Native Software Engineer

≈ $106k – $206k per year (Estimated) • Equity • Senior • Hybrid (London, United Kingdom) • Full-Time • Senior
Amazon Redshift
AI/ML
LLM
AI Agents
Weights & Biases
Arize Phoenix
LangSmith
DevOps
AWS Lambda
Amazon S3
AWS
+1
Apply

TeamViewer

teamviewer.com
teamviewer.com • HQ: Göppingen, Germany • AR & VR Software • RMM & MSP Software • 1001-5000 employees • Est. 2005 • Trust A • Hiring 159, 9 new
HQ: Göppingen, Germany • AR & VR Software • RMM & MSP Software • 1001-5000 employees • Est. 2005 • Trust A • Hiring 159, 9 new
TeamViewer is a company founded in 2005 in Göppingen whose remote access software is installed on billions of devices. Its platform lets support teams control computers and machines anywhere, and it has expanded into augmented reality assistance for frontline workers. The company is listed in Frankfurt and serves customers in more than a hundred countries.
No named decision-maker yet.
Careers mailbox is known
Verified live · 1 hour ago 4 months ago Fading · 37%

Senior Software Architect

≈ $120k – $213k per year (Estimated) • Staff+ • 10+ years exp • In office (London, United Kingdom) • Bachelor's Degree • Full-Time • Architect
C#
C++
Java
SQL
AI/ML
Function Calling
Agentic Workflows
Cursor
Claude Code
Claude
Copilot
AI Agents
DevOps
GitHub
+4
Apply

Partly

partly.com
partly.com • HQ: Christchurch, New Zealand • Supply Chain & Logistics Software • B2B Commerce • Automotive Software • 51-200 employees • Est. 2020 • Startup • Trust B • Hiring 33, 2 new
HQ: Christchurch, New Zealand • Supply Chain & Logistics Software • B2B Commerce • Automotive Software • 51-200 employees • Est. 2020 • Startup • Trust B • Hiring 33, 2 new
Partly is an automotive software company that builds data and commerce infrastructure for the vehicle parts supply chain. Its platform maps parts catalogues to vehicles and connects collision repairers, workshops, parts distributors and manufacturers so that they can identify, price and order the correct parts with less manual work. The company operates in New Zealand, Australia, the United States and the United Kingdom and is headquartered in Christchurch, New Zealand.
No named decision-maker yet.
Careers mailbox is known
Verified live · 9 min ago Visa sponsor 4 months ago Long shot · 16%

Product Engineer, UK

≈ $70k – $158k per year (Estimated) • Equity • Middle • 3+ years exp • In office (London, United Kingdom) • Relocation • Full-Time • Middle
Rust
Rust
Rocket
AI/ML
Anthropic
LLM
AI Agents
Apply

Flow Traders

flowtraders.com
flowtraders.com • HQ: Amsterdam, Netherlands • Stock Exchanges & Market Infrastructure • Hedge Funds & Alternative Investments • 201-500 employees • Est. 2004 • Trust A • Hiring 43, 4 new
HQ: Amsterdam, Netherlands • Stock Exchanges & Market Infrastructure • Hedge Funds & Alternative Investments • 201-500 employees • Est. 2004 • Trust A • Hiring 43, 4 new
Flow Traders is a Dutch trading firm founded in 2004 and listed on Euronext Amsterdam. It specialises in exchange traded products and builds its own pricing, risk and execution technology. The company is one of the largest liquidity providers in European exchange traded funds.
No named decision-maker yet.
No careers mailbox known
Verified live · 3 hours ago Visa sponsor 4 months ago Long shot · 18%

Senior Software Engineer, C++ , Core Platform

≈ $111k – $216k per year (Estimated) • Senior • 5+ years exp • In office (London, United Kingdom) • Bachelor's Degree • Senior
Rust
TypeScript
C++
Python
DevOps
WebSockets
Apply
Verified live · 3 hours ago Visa sponsor 4 months ago Long shot · 11%

Senior Software Engineer, C++

≈ $109k – $212k per year (Estimated) • Senior • 7+ years exp • In office (London, United Kingdom) • Bachelor's Degree • Senior
C++
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Orbital

orbital.com
orbital.com • HQ: London, United Kingdom • Document AI • Legal AI • PropTech • 1001-5000 employees • Est. 2018 • Trust A • Hiring 14, 1 new
HQ: London, United Kingdom • Document AI • Legal AI • PropTech • 1001-5000 employees • Est. 2018 • Trust A • Hiring 14, 1 new
Orbital is a legal technology company headquartered in London, United Kingdom, and founded in 2018 as Orbital Witness by Will Pearce and Ed Boulle. The company builds Orbital Copilot, an AI agent that reads title deeds, leases, and survey documents and drafts the reports and objection letters real estate lawyers produce during property diligence. It sells to law firms and property businesses in the United Kingdom and the United States, aiming to cut the manual review time in commercial transactions.
No named decision-maker yet.
No careers mailbox known
Verified live · 6 min ago 4 months ago Long shot · 18%

Product Engineer

$120k – $147k per year • Equity • Hybrid (London, United Kingdom) • Full-Time • English
TypeScript
JavaScript
Python
AI/ML
GPT-5
OpenAI
Copilot
AI Agents
LLM
Frontend
Next.js
React.js
DevOps
Twelve-Factor App
CI/CD
Cybersecurity
ISO 27001
+5
Apply

Vialto Partners

vialtopartners.com
vialtopartners.com • HQ: London, United Kingdom • Human Resources • Payroll Services • Tax Advisory & Preparation • 1001-5000 employees • Est. 2022 • Trust B • Hiring 163, 1 new
HQ: London, United Kingdom • Human Resources • Payroll Services • Tax Advisory & Preparation • 1001-5000 employees • Est. 2022 • Trust B • Hiring 163, 1 new
Vialto Partners is a global mobility services firm that advises employers and their internationally mobile staff on cross-border tax and social security, immigration, business travel, remote work, rewards and compensation, payroll and related compliance, backed by its own technology platform. It was created in 2022 when PwC's global mobility business became a standalone company, and it reports more than 6,500 staff in over 50 countries, with large teams in London, Bengaluru, Toronto, San Jose and Chicago, plus an immigration law practice in Canada. It hires global mobility tax associates and managers, immigration specialists, payroll specialists, interns and operations staff.
No named decision-maker yet.
Careers mailbox is known
Open 123 daysVerified live · 1 day ago Visa sponsor 4 months ago Long shot · 11%

Senior Full Stack Engineer – Vialto Rewards

≈ $79k – $152k per year (Estimated) • Equity • Senior • 5+ years exp • Hybrid (London, United Kingdom) • Bachelor's Degree • Full-Time • Senior
C#
TypeScript
JavaScript
SQL
C#
ASP.NET Core
Entity Framework Core
xUnit
AI/ML
Anomaly Detection
OpenAI Codex
Claude Code
RAG
LLM
AI Agents
Semantic Kernel
LangChain
Prompt Engineering
Frontend
Next.js
React.js
Mobile
MVC
State Management
DevOps
Rest API
Azure
Git
CI/CD
Cybersecurity
SOC 2
GDPR
QA
Jest
Mocha
+20
Apply
Open 123 daysVerified live · 1 day ago Visa sponsor 4 months ago Long shot · 11%

Senior Full Stack Engineer – Vialto Rewards - Senior Manager

≈ $79k – $152k per year (Estimated) • Equity • Senior • 5+ years exp • Hybrid (London, United Kingdom) • Bachelor's Degree • Full-Time • Senior
C#
TypeScript
JavaScript
SQL
C#
ASP.NET Core
Entity Framework Core
xUnit
AI/ML
Anomaly Detection
OpenAI Codex
Claude Code
RAG
LLM
AI Agents
Semantic Kernel
LangChain
Prompt Engineering
Frontend
Next.js
React.js
Mobile
MVC
State Management
DevOps
Rest API
Azure
Git
CI/CD
Cybersecurity
SOC 2
GDPR
QA
Jest
Mocha
+20
Apply

Macrobond

macrobond.com
macrobond.com • HQ: London, United Kingdom • Data & Analytics • Artificial Intelligence • Financial Services • Financial Data & Market Intelligence • 11-50 employees • Startup • Hiring 13, 1 new
HQ: London, United Kingdom • Data & Analytics • Artificial Intelligence • Financial Services • Financial Data & Market Intelligence • 11-50 employees • Startup • Hiring 13, 1 new
75% faster workflows. 2,400+ data sources. 5,000+ custom charts. Macrobond is your single force of truth for financial and economic decision-making.
No named decision-maker yet.
Careers mailbox is known
Open 124 daysVerified live · 2 hours ago 4 months ago Long shot · 7%

Senior Full Stack Engineer

≈ $90k – $174k per year (Estimated) • Senior • In office (London, United Kingdom) • Full-Time • Senior
Semantic Search
Apply

Aurora

joinaurora.co
joinaurora.co • HQ: New York, United States • Travel Agencies • Luxury Travel • 1-10 employees • Est. 2017 • Startup • Trust B • Hiring 7
HQ: New York, United States • Travel Agencies • Luxury Travel • 1-10 employees • Est. 2017 • Startup • Trust B • Hiring 7
L i f e s t y l e Mastery .. Proposals in minutes. Benefits beyond the norm. 24/7 coverage. Whether it's a last-minute weekend or a bucket-list safari, Aurora delivers with insider destination knowledge. Aurora members benefit from complimentary reservations at the world's most sought-after tables.
No named decision-maker yet.
No careers mailbox known
Open 124 daysVerified live · 5 hours ago 4 months ago Long shot · 7%

Senior Backend Engineer

$100k – $170k per year • Senior • London • Remote (Germany, United Kingdom, Poland, Romania) • Full-Time • Senior
SQL
Python
JavaScript
Python
Django
Celery
AI/ML
RAG
LLM
Frontend
Vue.js
DevOps
Terraform
GCP
Cybersecurity
PCI DSS
SOC 2
ISO 27001
+5
Apply
Open 257 daysTop 25% pay Visa sponsorship 8 months ago Long shot · 4%

Founding Product Engineer (AI & Agentic Systems)

$160k – $227k per year • Hybrid (London, United Kingdom)
Python
Python
Django
AI/ML
Embeddings
Function Calling
Human-in-the-Loop
RAG
AI Agents
Apply

GSK

gsk.com
gsk.com • HQ: London, United Kingdom • Oncology Therapeutics • Infectious Disease Therapeutics • Vaccines • Prescription Drugs • 1001-5000 employees • Est. 2000 • Trust B • Hiring 559, 119 new
HQ: London, United Kingdom • Oncology Therapeutics • Infectious Disease Therapeutics • Vaccines • Prescription Drugs • 1001-5000 employees • Est. 2000 • Trust B • Hiring 559, 119 new
GSK is a British multinational pharmaceutical company that develops and manufactures prescription medicines and vaccines, with research focused on infectious diseases, HIV, respiratory and immunology, and oncology. It was formed in 2000 through the merger of Glaxo Wellcome and SmithKline Beecham and spun off its consumer healthcare business as Haleon in 2022. Listed in London and New York, it runs research, manufacturing and commercial operations worldwide. The company is headquartered in London, England, United Kingdom.
Anastasia Maksimova · HR
Careers mailbox is known
Open 124 daysTop 25% pay 4 months ago Long shot · 4%

AIML Software Engineer, AI for Science

$136k – $227k per year • London • San Francisco • Zug • Heidelberg • Cambridge • Remote (United Kingdom) • Full-Time • English: C1
SQL
Python
Python
FastAPI
AI/ML
JAX
TensorFlow
PyTorch
Machine Learning
AI Agents
DevOps
Google GKE
Google Cloud Run
Platform Engineering
GCP
Kubernetes
Azure
CI/CD
Terraform
+8
Apply

Akqa

akqa.com
akqa.com • HQ: London, United Kingdom • 51-200 employees • Est. 1994 • Trust B • Hiring 26, 2 new
HQ: London, United Kingdom • 51-200 employees • Est. 1994 • Trust B • Hiring 26, 2 new
AKQA is a design and innovation company receiving recognition for the influence of our work and its ability to make a positive difference in people’s lives.
No named decision-maker yet.
Careers mailbox is known
Open 124 daysVerified live · 1 hour ago Visa sponsor 4 months ago Long shot · 13%

Principal Engineer (Gen AI and MACH Architecture)

≈ $99k – $199k per year (Estimated) • Lead • 8+ years exp • Hybrid (London, United Kingdom) • Principal
Kotlin
JavaScript
Swift
Python
AI/ML
Vertex AI
Fine-tuning
AWS Bedrock
GraphRAG
Vercel AI SDK
Cursor
OpenAI
Claude
RAG
LLM
Frontend
GraphQL
Next.js
React.js
Mobile
SwiftUI
React Native
DevOps
Vercel
Netlify
Bitbucket
GitLab
Azure DevOps
GitHub
Terraform
Rest API
GCP
Azure
CI/CD
AWS
Platform Engineering
Design
Figma
+25
Apply

Rain

rainapp.com
rainapp.com • HQ: Nashville, United States • Personal Finance Apps & Education • 51-200 employees • Startup • Trust B • Hiring 9, 1 new
HQ: Nashville, United States • Personal Finance Apps & Education • 51-200 employees • Startup • Trust B • Hiring 9, 1 new
Rain is the leading all-in-one financial health platform that helps employees stabilize, control, and grow their finances.
Thomas Scanlon · Executive Officer · decision-maker
Andreas Penna · Executive Officer · decision-maker
Alex Bradford · Director, Executive Officer · decision-maker
Aaron Wang · Director
Careers mailbox is known
Likely inactiveVerified live · 1 hour ago 4 months ago Long shot · 8%

Staff Engineer

≈ $71k – $152k per year (Estimated) • Staff+ • 8+ years exp • Lisbon • Rome • Sofia • Barcelona • Madrid • Remote (United Kingdom, Bulgaria, Croatia, Czech Republic, Ireland) • Full-Time • Staff
Go
SQL
Python
Databases
RabbitMQ
Apache Kafka
AI/ML
Flink
DevOps
GitLab CI
Amazon ECS
GitHub Actions
Rest API
Docker
GCP
Kubernetes
Azure
CI/CD
AWS
+8
Apply
Likely inactiveVerified live · 1 hour ago 5 months ago Long shot · 11%

Senior Backend Engineer

≈ $45k – $93k per year (Estimated) • Senior • 5+ years exp • Lisbon • Rome • Sofia • Barcelona • Madrid • Remote (United Kingdom, Bulgaria, Croatia, Czech Republic, Ireland) • Full-Time • Senior
Go
SQL
Python
Databases
RabbitMQ
Apache Kafka
AI/ML
Flink
DevOps
GitLab CI
Amazon ECS
GitHub Actions
Rest API
Docker
GCP
Kubernetes
Azure
CI/CD
AWS
+8
Apply
Machines can read this selection · checked 00:50 UTC
Backend Developer Jobs in London
Frequently asked questions
How many Backend Developer jobs in London are available on Alion?
There are currently 1060 active listings from 474 hiring companies on Alion, refreshed daily.
What salary do Backend Developer jobs in London pay?
The average salary is around $213,465 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.