46,001 London jobs
Open tech roles based in London.
Mid Level Full Stack Engineer (Fast growing startup)
Mid-level full-stack engineer at Stairpay, a London proptech startup digitising UK affordable and shared-ownership housing. You own features end-to-end (TypeScript, React/Next.js, SQL APIs, AWS) while directing and verifying AI agents and building the tests, evals and guardrails that keep autonomous changes safe.
Senior Backend Engineer: Scale Microservices & Lakehouse
Senior backend engineer/architect at Publicis Digital Experience in London, on-site, who designs distributed microservices and data-pipeline/lakehouse architecture, builds APIs with Python (FastAPI/Flask) on AWS/GCP cloud-native stacks, and drives observability, reliability, and CI/CD — a tech-leadership role without people management.
Senior Backend Engineer (NestJS, GCP) – 4-Day Week, Hybrid
Whering, a London fashion-tech startup, seeks a Senior Backend Engineer to design scalable TypeScript/NestJS services and own GCP infrastructure (Cloud Run, Cloud Functions, Firestore), including CI/CD pipelines and observability. The role is hybrid in London on a 4-day week and involves system design leadership and mentoring.
Hybrid Java Backend Engineer — Fintech, Spring Boot & AWS
Java backend engineer in London working with financial services clients: builds scalable Spring Boot microservices, modernises legacy systems to AWS, designs REST APIs, and drives CI/CD/DevOps practices while owning technology decisions and leading projects in a hybrid setup.
Senior Go Backend Engineer – Geospatial Microservices (Hybrid)
Wheely is hiring a Mid/Senior Backend Engineer in London to build and scale Go microservices for its premium ride-hailing platform on AWS and Kubernetes. Hybrid setup (4 days in West London, 1 remote day), with a £90k–£120k salary plus stock options.
Remote Backend Engineer - Digital Identity Platform
Backend engineer at Yoti designing, building, and maintaining server-side software for its digital identity platform, keeping CI/CD stable and integrations working. Wants someone keen to learn Go with Linux knowledge; hybrid work in London or remote within the UK.
Backend engineer java spring boot AWS in fintech
Backend Java engineer at a global technology consultancy serving financial services clients: leads projects end to end, builds Spring Boot microservices and REST APIs, migrates legacy systems to AWS, and improves CI/CD. Hybrid role with 3 days/week in the London office; salary up to £120k.
Low-Latency Backend Engineer – Market Making (London)
Backend engineer at Goldman Sachs (London) designing, building and maintaining high-performance, low-latency trading systems for systematic market making, working closely with traders and engineers. Core stack is Java or C++, with backtesting and low-latency trading experience in a financial context.
Full Stack Developer
Full-stack developer at LCP Delta, which builds tech-enabled energy-transition analytics products (real-time trading analytics, battery storage monitoring). You'll develop and maintain client-facing apps using a Vue.js/TypeScript front end, C#/.NET back end, and Microsoft Azure, with AI-assisted/agentic coding tools in daily workflows.
Senior Data Engineer
Senior Data Engineer at NewDay, a UK consumer credit provider, in a hybrid London role. Leads design and build of core data pipelines and the Data Lake powering analytics and data science, using dbt, Python, SQL, Spark and Snowflake on AWS, while mentoring engineers and driving data engineering standards.
Data Engineer
Data Engineer at Aries Global, a software group that acquires and operates AI-native software platforms. You'll own the group's data stack — building pipelines, models in dbt/Snowflake, dashboards and portfolio reporting — and onboard acquired companies' data to make it AI-ready.
Senior Data Engineer
Senior Data Engineer at IT consultancy Netcompany in London, building and maintaining data platforms and pipelines (ingestion, storage, modelling, movement) for public and private sector clients using Python, SQL/R, Kafka/Event Hubs streaming and ETL. Also coaches juniors and supports pre-sales; requires 4+ years' experience and security clearance eligibility.
DevOps Engineer
DevOps Engineer at Fuku by Momofuku (London) designing and maintaining cloud infrastructure, building CI/CD pipelines with GitHub Actions, managing Kubernetes clusters, and implementing monitoring and incident response. Core stack: AWS/GCP, Docker, Kubernetes, Terraform/Pulumi, Python/Bash.
Data Engineer
Data Engineer building easyJet holidays' new Operational Data Platform: designing and maintaining ETL/ELT pipelines, optimising data processes, and supporting governance. Core stack is Python, SQL, pipeline tools like dbt/Airflow/Dagster/AWS Glue, and a cloud data platform (AWS/Azure/GCP). Hybrid role, 3 days/week at the Luton Airport HQ.
Senior Java Backend Engineer – Risk Systems, Agile & DevOps
Senior Java backend engineer at Methods, a UK IT services consultancy serving central government, developing and enhancing Market Risk applications for regulatory compliance. Day to day: Java backend work within an Agile squad, applying DevOps practices and collaborating with business partners on tooling.
Senior Backend Engineer (Go) - Hybrid, Stock Options
Wheely in London is hiring a Mid/Senior Backend Engineer for its Marketplace team to build and maintain high-scale Go services and design new microservices, working with product, design, and data science. Office-based in West London 4 days/week with a stack of Go, PostgreSQL, MongoDB, Redis, RabbitMQ, Kafka, AWS, Kubernetes, and Terraform.
Backend engineer for digital identity
Backend engineer on Yoti's Core platform: designing, building and maintaining the server software behind a digital identity and biometrics product. Go (willing to teach), Linux, git and CI/CD, with microservices (gRPC, Kubernetes, Docker) and cryptography as pluses; hybrid work from a central London office.
Senior Backend Engineer
Senior backend engineer at Publicis Media building OneSuite, a marketing intelligence and automation platform. Day to day: architecting distributed Python (FastAPI/Flask) microservices and APIs, and building PySpark/Databricks data pipelines for campaign activation, on AWS/GCP with Docker/Kubernetes. Based in London, working from the office four days per week.
(Senior) Backend Engineer, Maps
Backend engineer on Wheely's Mapping team, building Go microservices for road matching, low-latency ETA prediction, and high-volume geospatial tracking. Stack includes Go, PostgreSQL, MongoDB, RabbitMQ, Redis, gRPC, and Thrift on AWS and Kubernetes.