Backend Developer Salary 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

Solve

solve.ai
SolveAI turns complex business problems into custom AI applications — an enterprise platform to align, build, deploy, and maintain AI solutions.
solve.ai • London • Artificial Intelligence
London • Artificial Intelligence
Verified live · 1 day ago 2 months ago

Software Engineer

$86k – $194k per year (Estimated)In office (London, United Kingdom) • Full-Time
Rust
AI/ML
Edge AI
DevOps
gRPC
Apply
Verified live · 1 day ago 2 months ago

Forward Deployed Engineer

$80k – $181k per year (Estimated)In office (London, United Kingdom) • Full-Time
Edge AI
Apply
Report

TEM Energy

tem.energy
TEM Energy is an AI-powered energy transactions platform that connects businesses directly with local renewable energy generators. By bypassing traditional wholesale markets, the company enables commercial consumers to purchase 100% traceable wind, solar, and hydro power while reducing electricity costs. Its proprietary transaction architecture aims to modernize the energy grid and create a fairer, more transparent renewable energy market.
tem.energy • HQ: London, United Kingdom • Power Grid • Energy & Utilities • Energy Management • Est. 2021
HQ: London, United Kingdom • Power Grid • Energy & Utilities • Energy Management • Est. 2021
Verified live · 5 hours ago 2 months ago

Senior Staff Full Stack Engineer

$160k per year • Equity • Staff+ • Remote (United Kingdom) • Full-Time • Staff
Python
Databases
DynamoDB
DevOps
AWS
AWS Lambda
Amazon EventBridge
API Gateway
Apply
Open 264 daysVerified live · 5 hours ago 9 months ago

Technical Lead

$141k per year • Equity • Lead • Remote (United Kingdom) • Full-Time • Staff
JavaScript
Node JS
Python
Databases
DynamoDB
AI/ML
AI Agents
Frontend
React.js
DevOps
AWS
AWS Lambda
API Gateway
Apply
Open 264 daysVerified live · 5 hours ago 9 months ago

Staff Full Stack Engineer

$141k per year • Equity • Staff+ • Remote (United Kingdom) • Full-Time • Staff
JavaScript
Node JS
Python
Databases
DynamoDB
AI/ML
AI Agents
Frontend
React.js
DevOps
AWS
AWS Lambda
API Gateway
Apply
Report

Midnite

midnite.com
Midnite is a betting platform tailored for the esports fan. We are a collective of engineers and designers who all share a passion for esports and betting. We exist to bring fans closer to the games they love.
midnite.com • HQ: London, United Kingdom • Sports • Esports • Sports Betting
HQ: London, United Kingdom • Sports • Esports • Sports Betting
Verified live · 2 hours ago 2 months ago

Senior Backend Engineer

$122k – $149k per year • Senior • 5+ years exp • Remote (United Kingdom) • Full-Time • Senior
Python
Python
Flask
Mypy
Databases
PostgreSQL
Apache Kafka
Redis
DevOps
AWS
Docker
Terraform
Amazon S3
CI/CD
QA
Pytest
Apply
Report

Constructor

constructor.io
Founded in 2015, Constructor is an AI-powered search and product discovery platform built specifically for enterprise e-commerce businesses. The company utilizes real-time clickstream data and machine learning to deliver personalized product recommendations, site search results, and category browse experiences. By optimizing search outcomes for key retail metrics like revenue and conversion rather than simple keyword matching, it helps major online retailers increase sales and improve customer retention.
constructor.io • HQ: San Francisco, United States • Internet Services • Artificial Intelligence • Commerce • Search Engines • Est. 2015
HQ: San Francisco, United States • Internet Services • Artificial Intelligence • Commerce • Search Engines • Est. 2015
Verified live · 1 day ago 2 months ago

Full Stack Engineer: Searchandizing

$90k – $120k per year • Equity • Remote (Germany, United Kingdom, Croatia, Poland, Serbia) • Full-Time
Python
TypeScript
DevOps
CI/CD
Apply
Verified live · 1 day ago 3 months ago

Senior Backend Engineer: Recommendations

$80k – $120k per year • Senior • Remote (EMEA) • Full-Time • Senior • English: B2
Python
Rust
DevOps
AWS
Azure
CI/CD
CloudFormation
GCP
GitHub Actions
Grafana
Jenkins
PagerDuty
Prometheus
Terraform
Amazon CloudWatch
GitHub
Analytics
A/B Testing
Apply
Verified live · 1 day ago 3 months ago

Backend Engineer: Ranking

$80k – $120k per year • Remote (EMEA) • Full-Time • English: B2
Python
Rust
AI/ML
Feature Store
DevOps
CloudFormation
Terraform
AWS
Azure
CI/CD
GCP
Apply
Report

Netcraft

netcraft.com
Netcraft is a Bath company founded in 1995 that is best known for its long running survey of web server software. Its main business is detecting and taking down phishing sites, fraud and malware on behalf of banks and governments. The company disrupts millions of malicious sites each year from its British base.
netcraft.com • HQ: Bath, United Kingdom • Internet Services • Artificial Intelligence • Cybersecurity • Est. 1995
HQ: Bath, United Kingdom • Internet Services • Artificial Intelligence • Cybersecurity • Est. 1995
Verified live · 8 hours ago 2 months ago

Backend Engineer - Phone Scam Disruption

$80k – $181k per year (Estimated)In office (London, United Kingdom)
Go
Perl
SQL
TypeScript
Databases
MariaDB
MySQL
AI/ML
LLM
DevOps
CI/CD
Git
Configuration Management
Docker
Kubernetes
Puppet
Apply
Report

Airtable

airtable.com
Airtable is a software company headquartered in San Francisco, California, and founded in 2012 by Howie Liu, Andrew Ofstad, and Emmett Nicholas. The company builds a platform that looks like a spreadsheet but works as a relational database, letting teams create custom applications, workflows, and interfaces without writing code. It is used by product, marketing, and operations teams at companies of all sizes and has added AI agents that run tasks against the underlying data.
airtable.com • HQ: San Francisco, United States • AI Agents • Project Management • Database Management • Information Technology • Productivity Software • Artificial Intelligence • Software • 201-500 employees • Est. 2012
HQ: San Francisco, United States • AI Agents • Project Management • Database Management • Information Technology • Productivity Software • Artificial Intelligence • Software • 201-500 employees • Est. 2012
$91k – $223k per year (Estimated) • Senior • 8+ years exp • Remote (United States, France, United Kingdom, Australia) • Relocation • Contractor • Staff
Go
TypeScript
DevOps
Amazon EKS
ArgoCD
AWS
CI/CD
CloudFormation
Jenkins
Kubernetes
OpenTofu
Pulumi
Spinnaker
Terraform
Cybersecurity
Least Privilege
Management
Airtable
Apply
Report

Cint

cint.com
Cint is a global software company headquartered in Stockholm, Sweden, and was founded in 1998. The company operates a digital insights platform that automates the market research process by connecting sample providers with researchers to gather consumer data. Listed on the Nasdaq Stockholm, it maintains a presence in over 15 countries and serves thousands of customers across the market research, advertising, and consulting industries.
cint.com • HQ: Stockholm, Sweden • Analytics Platforms • Business Process Automation (BPA) • Software • Data Collection • Data & Analytics • Sales & Marketing • Market Research • Est. 1998
HQ: Stockholm, Sweden • Analytics Platforms • Business Process Automation (BPA) • Software • Data Collection • Data & Analytics • Sales & Marketing • Market Research • Est. 1998
Verified live · 1 day ago 2 months ago

Staff Software Engineer - DSM

$128k – $212k per year (Estimated) • Staff+ • 10+ years expUnited Kingdom • Remote (United Kingdom) • Full-Time • Senior
C++
Elixir
Go
Haskell
Java
Python
Ruby
Scala
SQL
Java
Spring Framework
Python
pySpark
Databases
Apache Kafka
Delta Lake
AI/ML
Spark
Pandas
DevOps
Docker
Rest API
AWS
GCP
Apply
Report

Synack

synack.net
synack.net • Washington • Chicago • New York
Washington • Chicago • New York
Verified live · 3 hours ago 2 months ago

Software Engineer, AI (Level determined by experience)

$65k – $155k per year (Estimated) • Middle • 4+ years exp • Remote (United Kingdom) • Middle
Python
Databases
Apache Kafka
AI/ML
AI Agents
LangGraph
RAG
LangChain
Function Calling
LLM Guardrails
Model Context Protocol
Red Teaming
DevOps
Docker
GCP
Kubernetes
Cybersecurity
FedRAMP
Apply
Report

Vercel

vercel.com
Vercel is a leading cloud platform for frontend developers that provides hosting for static sites and serverless functions, enabling teams to build, scale, and secure a faster, personalized web. Best known as the creators of Next.js - a popular open-source React framework - the company focuses on optimizing the developer experience with seamless deployment workflows and continuous integration.
vercel.com • San Francisco • New York • London • Berlin • Sydney • Cloud Computing • Web Development • Web Hosting
San Francisco • New York • London • Berlin • Sydney • Cloud Computing • Web Development • Web Hosting
Verified live · 2 hours ago 2 months ago

Software Engineer, Compute

Senior • 5+ years expRemote/Hybrid (London, United Kingdom) • Senior
Go
JavaScript
AI/ML
AI Agents
OpenAI
Frontend
Next.js
React.js
DevOps
Kubernetes
Nomad
Terraform
Vercel
Cybersecurity
Tcpdump
Apply
Verified live · 2 hours ago 8 months ago

Forward-Deployed Engineer

Equity • Senior • 5+ years expRemote/Hybrid (London, United Kingdom) • Senior
TypeScript
JavaScript
AI/ML
Prompt Engineering
AI Agents
Function Calling
OpenAI
Model Context Protocol
Frontend
Next.js
React.js
Vue.js
Gatsby
Webpack
DevOps
Vercel
Apply
Report

EveryMatrix

everymatrix.com
EveryMatrix is a gaming technology company founded in 2008 and headquartered in St Julian's. It supplies casino, sportsbook, payment and platform software to operators. The group employs well over a thousand engineers.
everymatrix.com • HQ: St. Julian's, Malta • Sports Betting • Gaming • iGaming & Gambling • 11-50 employees • Est. 2008
HQ: St. Julian's, Malta • Sports Betting • Gaming • iGaming & Gambling • 11-50 employees • Est. 2008
Verified live · 4 hours ago 2 months ago

Full Stack Technical Lead

$94k – $188k per year (Estimated) • Lead • Remote/Hybrid (London, United Kingdom) • Full-Time • Staff • English: B2
Java
Java
Spring Boot
Databases
ClickHouse
PostgreSQL
DevOps
CI/CD
Docker
Git
Kubernetes
Apply
Report

Aion

aion.io
Aion is an enterprise artificial intelligence company headquartered in San Francisco, California, and founded in 2025 by Jayden Watson and Christian Angermayer. The company offers a platform for building, fine tuning, and deploying AI systems and agents in production, sold together with forward deployed engineers who implement it inside the customer organization. It runs teams across the United States, the United Kingdom, and India, targeting enterprises that want working AI systems rather than pilots.
aion.io • HQ: San Francisco, United States • AI Infrastructure • Hardware • IT Consulting • LLM & Generative AI • AI Agents • Artificial Intelligence • Information Technology • 201-500 employees • Est. 2025
HQ: San Francisco, United States • AI Infrastructure • Hardware • IT Consulting • LLM & Generative AI • AI Agents • Artificial Intelligence • Information Technology • 201-500 employees • Est. 2025
Verified live · 2 days ago 2 months ago

Software Engineer, General

$81k – $182k per year (Estimated) • Junior • 2+ years expIn office (London, United Kingdom) • Master's Degree • Full-Time • Junior
Go
Databases
Apache Kafka
MySQL
NATS
PostgreSQL
RabbitMQ
Redis
AI/ML
Fine-tuning
Jupyter Notebook
DevOps
AWS
Azure
CI/CD
Docker
GCP
Git
gRPC
Kubernetes
Amazon S3
Grafana
Platform Engineering
Prometheus
SLURM
Terraform
HPC
Analytics
ETL/ELT
Apply
Verified live · 2 days ago 2 months ago

Senior Software Engineer, Inference Platform

$97k – $175k per year (Estimated) • Senior • 4+ years expIn office (London, United Kingdom) • Master's Degree • Full-Time • Senior
C++
Go
Python
Rust
Databases
Apache Kafka
PostgreSQL
RabbitMQ
Redis
AI/ML
Fine-tuning
LLM
Quantization
TensorRT
TensorRT-LLM
vLLM
TGI
Jupyter Notebook
DevOps
Docker
Grafana
Kubernetes
OpenTelemetry
Prometheus
API Gateway
Platform Engineering
SLURM
HPC
Analytics
A/B Testing
ETL/ELT
Apply
Report

Jump Trading

jumptrading.com
Jump Trading is a proprietary trading firm focused on quantitative and high-speed strategies. It invests heavily in networking, hardware acceleration and research computing. The firm also runs ventures in cryptocurrency infrastructure and machine learning research.
jumptrading.com • HQ: Chicago, United States • Est. 1999
HQ: Chicago, United States • Est. 1999
Verified live · 1 day ago 2 months ago

Campus Software Engineer (Intern)

Intern • In office (London, United Kingdom) • Internship • Intern
C++
Python
Rust
SQL
Python
FastAPI
Databases
ClickHouse
DuckDB
MySQL
Redpanda
AI/ML
Claude
Claude Code
Pandas
DevOps
Git
eBPF
gRPC
Kubernetes
Apply
Report

Sensor Tower

sensortower.com
Sensor Tower is a market intelligence and analytics company that provides data-driven insights into the digital app ecosystem and digital advertising landscapes. Its platform offers mobile market metrics, including app store optimization, keyword tracking, download and revenue estimates, and user retention analytics for developers, marketers, and investors. By delivering deep visibility into competitive trends and audience behavior, it enables businesses to optimize their digital strategies and drive user growth across global app markets.
sensortower.com • HQ: San Francisco, United States • Software • Sales & Marketing • Mobile App Development • Data & Analytics • Est. 2013
HQ: San Francisco, United States • Software • Sales & Marketing • Mobile App Development • Data & Analytics • Est. 2013
Verified live · 1 day ago 2 months ago

Full Stack Engineer

$78k – $176k per year (Estimated)In office (London, United Kingdom) • Full-Time • Polish
C#
JavaScript
Ruby
SQL
C#
ASP.NET Core
Ruby
Sidekiq
Databases
Amazon Redshift
MongoDB
Frontend
React.js
DevOps
AWS
PagerDuty
GitHub
Management
Jira
Apply
Report

Uniphore

uniphore.com
Uniphore is an enterprise artificial intelligence technology company headquartered in Palo Alto, California, and founded in 2008. The company provides a business AI platform that integrates data, knowledge, and models to automate front-office and back-office workflows using conversational AI, speech analytics, and agentic AI solutions. It serves over 2,000 businesses across more than 20 countries, focusing on large-scale deployments in industries such as financial services, healthcare, telecommunications, and retail.
uniphore.com • HQ: Palo Alto, United States • Speech & Audio AI • Business Process Automation (BPA) • Software • LLM & Generative AI • AI Agents • Conversational AI • Artificial Intelligence • 501-1000 employees • Est. 2008
HQ: Palo Alto, United States • Speech & Audio AI • Business Process Automation (BPA) • Software • LLM & Generative AI • AI Agents • Conversational AI • Artificial Intelligence • 501-1000 employees • Est. 2008
Verified live · 1 day ago 2 months ago

Senior Forward Deployed Engineer

$99k – $180k per year (Estimated) • Senior • 4+ years expIn office (London, United Kingdom) • Master's Degree • Full-Time • Senior
Node JS
Python
SQL
JavaScript
Databases
Pinecone
AI/ML
AI Agents
CrewAI
Fine-tuning
Haystack
Knowledge Distillation
LangChain
LangGraph
LlamaIndex
LLM
Multimodal AI
Prompt Engineering
RAG
Frontend
Emotion
GraphQL
React.js
Vue.js
DevOps
CI/CD
Docker
Kubernetes
Platform Engineering
Vector
Apply
Verified live · 1 day ago 2 months ago

Senior Staff Forward Deployed Engineer

$141k – $306k per year (Estimated) • Staff+ • 12+ years expIn office (London, United Kingdom) • Bachelor's Degree • Full-Time • Staff
Node JS
Python
SQL
JavaScript
AI/ML
Fine-tuning
Knowledge Distillation
LLM
Multimodal AI
Prompt Engineering
RAG
Agentforce
AI Agents
EU AI Act
Knowledge Graph
Model Context Protocol
Frontend
Emotion
GraphQL
React.js
Vue.js
DevOps
CI/CD
Docker
Kubernetes
Platform Engineering
Vector
Cybersecurity
GDPR
HIPAA
SOC 2
Marketing
Salesforce
Apply
Report

Revolut

revolut.com
Just a quick security check Verification successful. Waiting for help.revolut.com to respond Just a quick security check Verification successful.
revolut.com • London • Financial Services • Banking • FinTech • 5000+ employees
London • Financial Services • Banking • FinTech • 5000+ employees
$81k – $182k per year (Estimated) • Remote (United Kingdom) • Full-Time
Python
DevOps
CI/CD
Apply
Report

Boldin

boldin.com
Boldin (formerly known as NewRetirement) is a financial technology company providing a collaborative financial planning and retirement modeling SaaS platform. Designed to bridge the gap between simple retirement calculators and traditional wealth management firms, the software delivers comprehensive accumulation and decumulation scenario planning for individual investors. Its proprietary modeling engine enables users to run Monte Carlo simulations, aggregate net worth data, optimize tax and Roth conversion strategies, analyze Social Security timing, and forecast healthcare and real estate costs.
boldin.com • Personal Finance • Wealth Management • Financial Services
Personal Finance • Wealth Management • Financial Services
Verified live · 1 day ago 2 months ago

Full Stack Engineer

$67k – $191k per year (Estimated) • Middle • 4+ years exp • Remote • Full-Time • Middle
Ruby
TypeScript
JavaScript
Ruby
Ruby on Rails
Sidekiq
Databases
PostgreSQL
Frontend
React.js
Material UI
Redux
SWR
Yarn
DevOps
AWS
Marketing
ActiveCampaign
Apply
Report

Kalepa

kalepa.com
Kalepa delivers critical risk insights and decision-ready quotes for every submission in minutes. Move faster, act decisively, and consistently select the most profitable risks - across every line you write.
kalepa.com • Warsaw • New York • Salt Lake City • Artificial Intelligence • Financial Services • Insurance • Est. 2018
Warsaw • New York • Salt Lake City • Artificial Intelligence • Financial Services • Insurance • Est. 2018
$100k – $185k per year • Equity • Staff+ • 8+ years exp • Remote (Europe) • Staff
Python
Databases
PostgreSQL
AI/ML
LLM
DevOps
Amazon EC2
AWS
AWS Lambda
Apply
$100k – $185k per year • Equity • Staff+ • 8+ years exp • Remote (Europe) • Staff
Python
Databases
PostgreSQL
DevOps
Amazon EC2
AWS Lambda
AWS
Apply
$80k – $165k per year • Equity • Senior • 5+ years exp • Remote (Europe) • Senior
Python
Databases
PostgreSQL
DevOps
Amazon EC2
AWS Lambda
AWS
Apply
Report

Mozilla Corporation

mozilla.org
Mozilla Corporation is a prominent global technology non-profit organization and open-source software developer headquartered in Mountain View, California, USA. Founded in 1998 as an offshoot of Netscape Communications, the organization operates on an open-source software development, digital rights advocacy, privacy technology, and commercial digital services model led by Executive Director / CEO Laura Chambers.
mozilla.org • HQ: Mountain View, United States • Gaming • PC Games • Artificial Intelligence • Machine Learning • Web Development • Software • Internet Services • 501-1000 employees • Est. 1998
HQ: Mountain View, United States • Gaming • PC Games • Artificial Intelligence • Machine Learning • Web Development • Software • Internet Services • 501-1000 employees • Est. 1998
Verified live · 1 hour ago 2 months ago

Senior Software Engineer, Firefox Desktop

$79k – $150k per year (Estimated) • Senior • 3+ years exp • Remote (United Kingdom, Canada) • Senior
C++
Rust
Apply
Verified live · 1 hour ago 3 months ago

Senior Software Engineer, Firefox Security

$82k – $155k per year (Estimated) • Senior • Remote (Germany, United Kingdom) • Internship • Senior
C++
Rust
Apply
Report

Spiral

spiraldb.com
Built for the machine consumer.. Spiral is the multimodal data platform for frontier AI. Every modality, machine-scale throughput.
spiraldb.com • San Francisco • New York • London
San Francisco • New York • London
Top 25% payVerified live · 10 hours ago 2 months ago

Software Engineer - Systems

$203k per year • Senior • 5+ years expIn office (London, United Kingdom) • Full-Time • Senior
Rust
Databases
ClickHouse
DuckDB
AI/ML
Multimodal AI
Time Series Forecasting
CUDA
CUDA Toolkit
PyTorch
Apply
Report

Sourcegraph

sourcegraph.com
Founded in 2013, Sourcegraph is an AI-powered code intelligence platform designed to help software engineers search, understand, and automate edits across massive codebases. The platform offers universal code search and an AI coding assistant named Cody, enabling developers to navigate complex repositories, speed up context gathering, and fix issues faster. By integrating directly into existing developer workflows and hosting environments, the company helps large engineering teams scale productivity and maintain code quality.
sourcegraph.com • Media & Entertainment • Books • Artificial Intelligence • Code Intelligence • Est. 2013
Media & Entertainment • Books • Artificial Intelligence • Code Intelligence • Est. 2013
Verified live · 10 hours ago 2 months ago

Software Engineer - Platform [IC3]

Remote
Model Context Protocol
DevOps
AWS
Azure
CDKTF
GCP
Kubernetes
SLI/SLO/SLA
Terraform
gRPC
QA
Rest-Assured
Apply
Verified live · 10 hours ago 2 months ago

Software Engineer/Tech Lead - Code Plane [IC5]

$114k – $256k per year (Estimated) • Lead • 8+ years exp • Remote • Internship • Staff
JavaScript
Go
TypeScript
Databases
PostgreSQL
AI/ML
AI Agents
Claude
Claude Code
Cursor
Model Context Protocol
Frontend
Svelte
GraphQL
SvelteKit
DevOps
Docker
Kubernetes
QA
Rest-Assured
Apply
Report
Backend Developer Salary 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.