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
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Quantum

UBDS Digital

ubdsdigital.com
Digital Lifecycle Partner for Secure Cloud Transformation.. Security Operations Centre (SOC) Built for Resilience. UBDS Digital's UK-based SOC delivers 24/7/365 protection, real-time threat detection, and expert-led incident response.
ubdsdigital.com • HQ: London, United Kingdom • Cloud Computing • Cybersecurity • Security Operations • Est. 2000
HQ: London, United Kingdom • Cloud Computing • Cybersecurity • Security Operations • Est. 2000
Verified live · 1 day ago 3 months ago

Full Stack Developer

$76k – $171k per year (Estimated)In office (London, United Kingdom)
C#
SQL
TypeScript
C#
ASP.NET Core
Entity Framework Core
Databases
Azure SQL Database
Apache Kafka
RabbitMQ
DevOps
Azure
Azure DevOps
Bicep
CI/CD
Docker
Git
Rest API
Terraform
Kubernetes
Azure AKS
Cybersecurity
Microsoft Entra ID
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Fuku

eatfuku.com
Fuku is a fast-casual restaurant concept founded by chef David Chang that specializes in Asian- and Southern-inspired spicy fried chicken. Originating from a secret menu item at Momofuku Noodle Bar in New York, the brand has grown into a standalone culinary concept known for its signature chicken sandos, tenders, and sides. Today, Fuku operates through brick-and-mortar locations, major sports arenas, airports, and high-traffic venues across the United States.
eatfuku.com • HQ: New York, United States • Delivery • Food & Beverages • Catering & Food Services • 501-1000 employees
HQ: New York, United States • Delivery • Food & Beverages • Catering & Food Services • 501-1000 employees
Open 93 daysVerified live · 1 hour ago 4 months ago

Software Engineer

$84k – $189k per year (Estimated)In office (London, United Kingdom) • Full-Time
Python
DevOps
AWS
Azure
GCP
CI/CD
Docker
Kubernetes
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Solidgate

solidgate.com
Solidgate is a financial technology company headquartered in London, United Kingdom, and founded in 2018. The company provides a payment orchestration platform that enables businesses to manage multiple payment service providers, optimize transaction routing, and handle subscription billing, fraud prevention, and tax calculation. It serves global clients in the software-as-a-service and e-commerce sectors, offering infrastructure that supports card acquiring, alternative payment methods, and multi-currency treasury operations.
solidgate.com • HQ: London, United Kingdom • Commerce • Fraud Detection • Cybersecurity • Billing & Invoicing • Software • FinTech • Financial Services • Payments • 201-500 employees • Est. 2018
HQ: London, United Kingdom • Commerce • Fraud Detection • Cybersecurity • Billing & Invoicing • Software • FinTech • Financial Services • Payments • 201-500 employees • Est. 2018
Open 93 daysVerified live · 2 hours ago 4 months ago

Mid/Senior Backend Engineer

$66k – $188k per year (Estimated) • Senior • 10+ years expWarsawLviv • Remote (Europe) • Full-Time • Senior
Node JS
SQL
TypeScript
JavaScript
Go
Kotlin
Databases
Apache Kafka
MySQL
PostgreSQL
RabbitMQ
Frontend
tRPC
DevOps
CI/CD
Loki
VictoriaMetrics
Grafana
AWS
Docker
GitHub Actions
GitLab CI
Terraform
GitHub
GitLab
QA
Cypress
Jest
Vitest
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Amplemarket

amplemarket.com
Amplemarket combines buying signal data with artificial intelligence copywriting to run outbound sales campaigns. Founded in 2018 by Portuguese engineers, it covers prospecting, sequencing and deliverability in one system. Its Duo agents research accounts and draft personalised outreach automatically.
amplemarket.com • HQ: San Francisco, United States • Code Intelligence • Branding • Artificial Intelligence • Est. 2018
HQ: San Francisco, United States • Code Intelligence • Branding • Artificial Intelligence • Est. 2018
Open 1465 daysVerified live · 11 hours ago 4 years ago

Fullstack Software Engineer

Equity • Remote (LATAM, Europe) • Cofounder
Ruby
Ruby
Ruby on Rails
Databases
ElasticSearch
PostgreSQL
Redis
AI/ML
NLP
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Open 1465 daysVerified live · 11 hours ago 4 years ago

Senior Backend Software Engineer

Equity • Senior • Remote (LATAM, EMEA, North America) • Cofounder • Senior
Ruby
Ruby
Ruby on Rails
Databases
ElasticSearch
PostgreSQL
Redis
AI/ML
NLP
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Duffel

duffel.com
Any business – from travel startups to financial enterprises - can build with Duffel to search and book flights, stays, add ancillaries, charge customers, manage orders and more.
duffel.com • London • New York • Air Transport • Travel & Tourism • Travel Technology
London • New York • Air Transport • Travel & Tourism • Travel Technology
Open 94 daysVerified live · 1 day ago 4 months ago

Software Engineer (Backend)

$82k – $185k per year (Estimated)In office (London, United Kingdom) • Full-Time
Elixir
DevOps
GCP
Kubernetes
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Seccl

seccl.tech
Seccl is a Bath company founded in 2016 that supplies custody and trading technology to financial advisers and wealth managers. Its cloud platform lets firms run their own investment proposition instead of relying on legacy platforms. The company is owned by Octopus Group and serves a growing share of British advice firms.
seccl.tech • HQ: Bath, United Kingdom • Banking • Customer Relationship Management (CRM) • Financial Services • Est. 2016
HQ: Bath, United Kingdom • Banking • Customer Relationship Management (CRM) • Financial Services • Est. 2016
Open 95 daysVerified live · 1 day ago 4 months ago

Senior software engineer (Node.js/TypeScript)

$91k – $164k per year (Estimated) • Senior • Remote/Hybrid (London, Edinburgh, United Kingdom) • Full-Time • Senior
C#
Node JS
TypeScript
JavaScript
DevOps
AWS
AWS Fargate
AWS Lambda
Azure
CI/CD
GCP
GitHub Actions
Incident Management
Octopus Deploy
Terraform
Amazon ECS
Amazon EventBridge
Amazon S3
API Gateway
GitHub
Apply
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Bessemer Venture Partners is a prominent global venture capital firm with over a century of investing history, specializing in early-stage to growth-stage technology startups. The firm manages billions of dollars in assets and has backed hundreds of category-defining companies across enterprise software, consumer tech, fintech, and healthcare. Through its worldwide presence and deep operational expertise, it provides strategic guidance and capital to help visionary entrepreneurs scale their businesses globally.
bvp.com • Tokyo • Seoul • Chicago • Stockholm • New York • Financial Services • Machine Learning • Artificial Intelligence • Venture Capital • 51-200 employees
Tokyo • Seoul • Chicago • Stockholm • New York • Financial Services • Machine Learning • Artificial Intelligence • Venture Capital • 51-200 employees
Verified live · 2 hours ago 4 months ago

Software Engineer

$108k – $244k per year (Estimated)In office (London, United Kingdom) • Full-Time
Node JS
JavaScript
Frontend
React.js
DevOps
AWS
Azure
Kubernetes
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Depot

depot.dev
Depot is a build infrastructure platform offering: (1) Depot container builds - remote Docker builds up to 40x faster with Intel and Arm support, (2) Depot GitHub Actions runners - managed CI infrastructure with 30% faster CPUs at half the cost, (3) Depot Cache - distributed caching for Bazel…
depot.dev • AI Agents • Information Technology • DevOps • 11-50 employees • Est. 2022
AI Agents • Information Technology • DevOps • 11-50 employees • Est. 2022
Open 100 days 4 months ago

Staff Software Engineer

$100k – $250k per year • Staff+ • 7+ years exp • Remote (United States, Canada, United Kingdom) • Full-Time • Staff
Go
TypeScript
Databases
ClickHouse
MySQL
DevOps
AWS
Docker
GitHub Actions
GitHub
gRPC
OpenTelemetry
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Coupa Software

coupa.com
Coupa Software is a global enterprise software leader in AI-driven Business Spend Management (BSM) and supply chain design, headquartered in Foster City, California. Founded in 2006 by Dave Stephens and Noah Eisner (and taken private by Thoma Bravo in an $8B transaction in 2023), the platform oversees trillions of dollars in transactional spend across a network of over 3,000 corporate clients globally.
coupa.com • HQ: Foster City, United States • Transportation & Logistics • Supply Chain • Software • Business Process Automation (BPA) • 201-500 employees • Est. 2006
HQ: Foster City, United States • Transportation & Logistics • Supply Chain • Software • Business Process Automation (BPA) • 201-500 employees • Est. 2006
Verified live · 1 day ago 4 months ago

Forward Deployed Engineer (FDE) - 11385

$141k – $197k per year • Remote (United Kingdom)
JavaScript
Node JS
Python
AI/ML
AI Agents
AutoGen
Claude
LangChain
LLM
Model Context Protocol
Human-in-the-Loop
LLM Evaluation
LLM Guardrails
OpenAI
Frontend
GraphQL
Apply
Verified live · 1 day ago 5 months ago

Forward Deployed Engineer (FDE) - 11396

$81k – $182k per year (Estimated) • Remote (United Kingdom)
JavaScript
Node JS
Python
AI/ML
AI Agents
AutoGen
Claude
LangChain
LLM
Model Context Protocol
Human-in-the-Loop
LLM Evaluation
LLM Guardrails
OpenAI
Frontend
GraphQL
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Red Badger

red-badger.com
We craft seamless, engaging digital experiences customers want and that separates you from the competition. Build a product in 100 days with Red Badger.
red-badger.com • Cape Town • Leeds • London • Design & Creative • Commerce • Digital Goods
Cape Town • Leeds • London • Design & Creative • Commerce • Digital Goods
Open 103 daysVerified live · 1 day ago 4 months ago

Senior Software Engineer - £day rate (outside IR35)

$92k – $168k per year (Estimated) • Senior • In office (London, United Kingdom) • Freelance • Senior
JavaScript
Kotlin
Lua
Node JS
TypeScript
Databases
ElasticSearch
PostgreSQL
Redis
Frontend
React.js
Vue.js
DevOps
CI/CD
CircleCI
Docker
Git
GitHub Actions
Jenkins
Kubernetes
Pulumi
Terraform
GitHub
Apply
Open 103 daysVerified live · 1 day ago 4 months ago

Senior Software Engineer

$93k – $168k per year (Estimated) • Senior • Remote/Hybrid (London, United Kingdom) • Senior
JavaScript
Kotlin
Lua
Node JS
TypeScript
Databases
ElasticSearch
PostgreSQL
Redis
Frontend
GraphQL
React.js
Vue.js
DevOps
CI/CD
CircleCI
Docker
Git
GitHub Actions
Jenkins
Kubernetes
Pulumi
Terraform
GitHub
Apply
Report

Dash0

dash0.com
Dash0 is an OpenTelemetry-native observability and software reliability platform headquartered in San Francisco, California. Founded by observability industry veterans, the company provides an advanced monitoring, logging, tracing, and AI-driven troubleshooting ecosystem built entirely on open-source standards.
dash0.com • HQ: San Francisco, United States • Media & Entertainment • Data & Analytics • Log Analytics • Data Visualization • Books • Est. 2023
HQ: San Francisco, United States • Media & Entertainment • Data & Analytics • Log Analytics • Data Visualization • Books • Est. 2023
Open 103 daysVerified live · 1 day ago 4 months ago

Staff Product Engineer, Backend (Go, Java)

Equity • Staff+ • Remote (EU, Europe) • Full-Time • Staff
Go
Java
AI/ML
AI Agents
DevOps
OpenTelemetry
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Solana Labs

solanalabs.com
Solana Labs is a technology company founded in 2018 and based in San Francisco that created the Solana blockchain and its original validator client. It develops core protocol software, reference tooling and consumer products, including work on mobile hardware and wallet infrastructure for the network. The company operates alongside the Solana Foundation and a broad set of independent contributors who maintain clients and applications on the chain.
solanalabs.com • HQ: San Francisco, United States • Est. 2018
HQ: San Francisco, United States • Est. 2018
Open 104 days 4 months ago

Senior Backend Engineer - Solana Mobile

$138k – $229k per year (Estimated) • Senior • 5+ years exp • Remote (United States, United Kingdom) • Full-Time • Senior
Dart
Kotlin
Node JS
Rust
TypeScript
JavaScript
Databases
PostgreSQL
Redis
AI/ML
Claude
Claude Code
Copilot
Cursor
LLM
Mobile
Flutter
DevOps
AWS
AWS Lambda
CI/CD
Docker
GitHub Actions
Grafana
Loki
Prometheus
WebSockets
Amazon ECS
Amazon S3
GitHub
Web3
Solana
Staking
Ethereum
solana-web3.js
Web3.js
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Writer

writer.com
Writer is an enterprise generative artificial intelligence company headquartered in San Francisco, California, and founded in 2020. The company provides a full-stack platform that includes proprietary large language models, an integrated graph-based retrieval-augmented generation system, and tools for building autonomous AI agents. It serves Fortune 500 companies across sectors such as financial services, healthcare, and retail, focusing on delivering secure and compliant AI applications for marketing, sales, and operations.
writer.com • HQ: San Francisco, United States • Business Process Automation (BPA) • Software • Marketing Automation • Sales & Marketing • LLM & Generative AI • AI Agents • Artificial Intelligence • Est. 2020
HQ: San Francisco, United States • Business Process Automation (BPA) • Software • Marketing Automation • Sales & Marketing • LLM & Generative AI • AI Agents • Artificial Intelligence • Est. 2020
Verified live · 7 hours ago 4 months ago

Software engineer, agents (UK)

$71k – $166k per year (Estimated) • Equity • Middle • 3+ years expRemote/Hybrid (London, United Kingdom) • Full-Time • Middle
Python
TypeScript
JavaScript
AI/ML
AI Agents
Claude
Claude Code
Cursor
LangGraph
LangChain
Frontend
React.js
DevOps
AWS
Azure
CI/CD
Docker
GCP
Kubernetes
Vector
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Blinkapp

blinkapp.com
This domain is registered with Safenames There is no website configured for this address yet. Safenames is a globaldomain, security and brand-protection partner, trusted by leading organisations since 1999.
blinkapp.com • London • Boston • Domain Names • Cybersecurity • Est. 1999
London • Boston • Domain Names • Cybersecurity • Est. 1999
Open 105 daysVerified live · 1 day ago 4 months ago

Full Stack Engineer

$82k – $184k per year (Estimated) • Equity • In office (London, United Kingdom)
Java
Node JS
Scala
SQL
TypeScript
JavaScript
Frontend
Next.js
React.js
DevOps
Docker
Grafana
Kubernetes
Apply
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Goglobal

goglobalgeo.com
GoGlobal is a leading provider of global human resources management solutions, specializing in services such as global hiring, employee onboarding, payroll management, and compliance with international regulations. As an Employer of Record (EOR), GoGlobal allows businesses to hire and manage talent worldwide without the complexities and legal risks involved in international employment. Their platform enables clients to attract, hire, and retain the best talent while ensuring compliance with local labor laws across various countries.
goglobalgeo.com • London • Dubai • Tokyo • Subang Jaya • Kuala Lumpur • Financial Services • Professional Services • Human Resources
London • Dubai • Tokyo • Subang Jaya • Kuala Lumpur • Financial Services • Professional Services • Human Resources
Open 109 daysVerified live · 5 hours ago 4 months ago

Senior Software Engineer

$108k – $149k per year • Senior • Remote (United Kingdom, South Africa) • Full-Time • Senior
TypeScript
Node JS
JavaScript
Node JS
Fastify
Databases
PostgreSQL
Redis
AI/ML
Claude
Claude Code
AI Agents
Frontend
Next.js
React.js
DevOps
ArgoCD
CI/CD
GitHub Actions
Grafana
Kubernetes
Loki
Prometheus
GitHub
Apply
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Udacity

udacity.com
Udacity is an online education company headquartered in Emeryville, California, and founded in 2011 by Sebastian Thrun, David Stavens, and Mike Sokolsky after a free Stanford artificial intelligence course. The company sells Nanodegree programs in areas such as programming, data science, artificial intelligence, cloud computing, and autonomous systems, built together with industry partners. It shifted toward enterprise and government reskilling contracts and was acquired by Accenture in 2024.
udacity.com • HQ: Emeryville, United States • Corporate Training • Vocational Education • Education • EdTech Platforms • E-learning • Est. 2011
HQ: Emeryville, United States • Corporate Training • Vocational Education • Education • EdTech Platforms • E-learning • Est. 2011
$149k – $280k per year (Estimated) • Staff+ • 5+ years exp • Remote (MENA, APAC, Europe, United States, Canada) • Visa sponsorship • Contractor • Architect • English: C1
Pytest
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Fonoa

fonoa.com
Fonoa is a tax technology company founded in 2019 and headquartered in Dublin. Its platform automates indirect tax determination and reporting for digital businesses. The service is used by global marketplaces and platforms.
fonoa.com • HQ: Dublin, Ireland • Billing & Invoicing • Data Management • Network Security • Est. 2019
HQ: Dublin, Ireland • Billing & Invoicing • Data Management • Network Security • Est. 2019
Open 114 daysVerified live · 7 hours ago 4 months ago

Senior/Staff Software Engineer, AI

$132k – $286k per year (Estimated) • Staff+ • 5+ years expRemote/Hybrid (London, United Kingdom, Zagreb, Croatia) • Full-Time • Staff
JavaScript
Go
Node JS
TypeScript
Databases
PostgreSQL
AI/ML
AI Agents
Prompt Engineering
RAG
Frontend
React.js
DevOps
GCP
Kubernetes
Terraform
Apply
Open 1026 daysVerified live · 7 hours ago 3 years ago

Senior/Staff Software Engineer

$135k – $291k per year (Estimated) • Staff+ • Remote/Hybrid (London, United Kingdom, Zagreb, Croatia) • Full-Time • Staff
JavaScript
Go
Node JS
TypeScript
Databases
PostgreSQL
AI/ML
AI Agents
Frontend
React.js
DevOps
GCP
Kubernetes
Terraform
Apply
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Barclays

home.barclays
Barclays is a British multinational universal bank that provides a wide range of services, including retail banking, corporate and investment banking, and wealth management. Headquartered in London with a history spanning centuries, it operates as a major financial institution with a significant presence across the United Kingdom, Europe, the Americas, Africa, and Asia. The bank focuses on delivering comprehensive financial solutions and digital banking products to millions of individual and institutional clients globally.
home.barclays • HQ: London, United Kingdom • Investment Banking • Financial Services • Banking
HQ: London, United Kingdom • Investment Banking • Financial Services • Banking
Verified live · 2 hours ago 4 months ago

Senior Software Engineer

$88k – $159k per year (Estimated) • Senior • In office (London, United Kingdom) • Full-Time • Senior
C#
Python
SQL
TypeScript
JavaScript
C#
.NET
Frontend
Angular
DevOps
Azure
CI/CD
Docker
Git
Rest API
WebSockets
Apply
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Decagon

decagonhq.com
Decagon is an enterprise AI company that builds autonomous customer service agents. Founded by Jesse Zhang and Ashwin Sreenivas and headquartered in San Francisco, California, the platform leverages large language models (LLMs) and advanced AI orchestration to automate complex customer support workflows end-to-end.
decagonhq.com • Douglas • San Francisco • Toronto • New York • London • Software • Professional Services • Human Resources
Douglas • San Francisco • Toronto • New York • London • Software • Professional Services • Human Resources
Top 25% payVerified live · 9 hours ago 4 months ago

Software Engineer, Agents

$169k – $244k per year • Middle • 3+ years expIn office (London, United Kingdom) • Full-Time • Middle
Python
TypeScript
AI/ML
AI Agents
Multimodal AI
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Harmonic

harmonic.fm
Built for Artists. Curated by Fans. Create your own record store now.
harmonic.fm • Palo Alto • London • Publishing • Commerce • Marketplaces
Palo Alto • London • Publishing • Commerce • Marketplaces
Open 121 dayVerified live · 1 day ago 4 months ago

Software Engineer, Infrastructure

$98k – $177k per year (Estimated) • Senior • 5+ years expIn office (London, United Kingdom) • Bachelor's Degree • Full-Time • Senior
C++
Python
AI/ML
Reinforcement Learning
DevOps
AWS
Azure
GCP
Kubernetes
Apply
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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.