You will design and maintain automated test frameworks using Java, Selenium, and RestAssured, creating UI, API, and regression tests within cross-functional Agile squads. Genomics England develops complex healthcare software systems enabling genomic medicine and research.

Elliptic★0.0· London

You will use TypeScript (Node.js/NestJS, React/Redux), SQL, data-visualization libraries, cloud tools (AWS, Kubernetes, Terraform) and AI coding assistants. As Investigations team lead at Elliptic, you’ll build tools for tracking crypto fund flows and stopping financial crime. The role leads a team of 3–5 engineers.

You'll work with .NET/C#, Python, TypeScript, NX Monorepo, CI/CD, AI-powered tooling, contract testing, and containerised testing (Testcontainers). The role defines and builds testing architecture, reusable frameworks, and developer tooling for a strategic Global Markets Front Office trading platform at a leading investment bank.

A Senior Full Stack Engineer role as Engineer #2 at a pre-seed AI startup building an AI platform for pharma commercial teams, using Python, FastAPI, TypeScript, Next.js, Azure, MongoDB, Elasticsearch, and Neo4j. Work includes data pipelines, AI-powered search, analytics, and enterprise workflows. The role requires experience on a data/AI-heavy B2B product, regulated industry exposure, and comfort on a tiny engineering team.

You'll work with Python, PyTorch, SGLang, LLMs, embeddings/reranking models, PEFT/LoRA, RAG, Docker, microservices, and cloud infrastructure. The team builds AI-powered applications transforming specialized financial markets, developing and deploying LLM solutions with significant autonomy. You'll join a small, experienced engineering team collaborating directly with founders and domain experts.

You will work with Java, Spring Boot, Docker, Kubernetes, and message brokers to build cloud-native microservices, RESTful APIs, and event-driven systems. You'll lead the development of Chip Financial's unique Lombard lending platform serving both internal brands and external SaaS clients, while mentoring junior engineers.

Build scalable backend systems, APIs, data pipelines, and DevOps practices using Python or full-stack JavaScript, integrating voice, reasoning, and context management. You will ship end-to-end product features for an AI layer designed to autonomously run small businesses for thousands of customers.

You will architect and build a greenfield financial platform for cross-border payments in emerging markets, using TypeScript, React, and Node to ship user-facing features. You will design ledger infrastructure, custody layers, wallet systems, virtual accounts, and automated settlement workflows that integrate digital assets with traditional banking rails.

You will work with React, React Native, Node.js, TypeScript, SQL, AWS, and cloud-native AI-powered products. The company is a Series A–funded, fast-growing tech business building products that matter and planning to double in size. This Staff Engineer role owns business-critical product areas and mentors engineers while remaining deeply hands-on.

Python, FastAPI, TypeScript, React, and GCP. Electric Twin builds a behavioral simulation platform that creates digital twins of populations to predict human behavior. You will join a team of 17.

Build and deploy production-grade agentic systems and RAG pipelines with Python, TypeScript, FastAPI, and React. As a founding engineer, lead architectural development of an AI-driven agency model replacing traditional property-market manual workflows with autonomous agents.

You will use Python, FastAPI, and advanced LLM techniques including chain-of-thought, RAG, and multi-agent tool use to build cognitive architectures for synthetic populations. Working within Electric Twin's Science team, you will design memory systems and decision-making frameworks that simulate human responses for behavioral prediction.

As a founding AI engineer, you’ll build production algorithms and evaluation pipelines using Python, LLMs, prompt engineering, OpenAI evals, PostgreSQL, and React/TypeScript. You will develop AI for patent generation, pushing LLM boundaries to boost efficiency for 400+ global IP teams. You work directly with PhD founders from UCL and Cambridge.

Work with JavaScript, Vue.js/React/Angular, HTML/CSS, and Figma to build scalable UI components. Join TransPerfect’s TechOps team, which delivers technology and interfaces for the company’s GlobalLink platform.

Build mission-critical software for a UK defence AI programme using Python, Java, React, MongoDB, Kubernetes, VMware, and AWS/Azure. You will join a multidisciplinary engineering team delivering secure, full-stack solutions.

Senior Full Stack Engineers will work with React, React Native, Node.js, TypeScript, SQL, REST APIs, cloud infrastructure, and AI integrations. They will build and evolve customer-facing web and mobile applications, scalable services, and AI-enabled features for a venture-backed software platform serving international markets. The role includes owning features end-to-end and mentoring engineers.

Work with a modern TypeScript stack: Next.js App Router, Server Actions, React 19, Node.js, Drizzle ORM, PostgreSQL, Playwright, Vitest, and GitHub Actions. Join Rentmigo's two-person engineering team to build and scale the core platform for their seed-stage PropTech startup, which allows UK renters to build credit history and wealth through monthly payments. As the third engineer, you'll own features end-to-end and influence architectural decisions.

Work with Next.js, Supabase, Vercel, TypeScript, React, and LLM-driven workflows, integrating AI-native interfaces and tool calls. Build agentic knowledge infrastructure for AI agents, powering deep research and reasoning for LLMs.

You will work with Java 17+, Spring Boot, Oracle SQL, document store DBs, Kubernetes, Jenkins, and GitHub Copilot. The investment bank team builds mission-critical, high-performance systems providing end-to-end visibility into payment lifecycles for technical, operations, and reporting teams.

You'll work primarily with Python (≈70%) and TypeScript, building backend services, APIs, and data-intensive systems on AWS with PostgreSQL and event-driven architecture. This early-stage climate tech company is building a new platform that combines real-time data, AI, and energy trading to support the transition to a cleaner electricity grid. You'll join a small engineering team where you'll own features end-to-end and have meaningful influence on product and technical direction.

Infosys★3.8 (17k)· London

Lead Consultant role at Infosys: build Oracle Fusion HCM Cloud solutions for UK public sector clients using HDL, HCM Extracts, BI Publisher, Fast Formulas, Payroll Batch Loader, OIC, and Redwood. This technical architect handles HR modules (Core HR, recruiting, learning, talent, UK payroll, pension, OTL, absence), integrations, data migration, and SDLC delivery. Preferred experience managing a team of 10+.

This role involves maintaining and building data pipelines using SQL, Python/Java, and cloud tools like Google Cloud Platform, BigQuery, Airflow, dbt, and Apache Spark. The team supports data analytics and reporting for a media company's portfolio. It focuses on integrating data from web analytics, CMS, subscription, and ad tech sources to enable business intelligence.

Microsoft★4.2 (9k)· London

Work with Azure SQL, Azure Database for PostgreSQL, Azure Cosmos DB, Microsoft Fabric (Lakehouse, Data Factory, Spark, Power BI, Real-Time Intelligence), and Copilot to help organisations modernise their data estates and ground AI on their data. As a Solution Engineer, you lead strategic customer engagements, design architectures, and mentor peers within Microsoft’s Data & AI team.

Salesforce★4.2 (1.5k)· London

Works with Salesforce Agentforce, Data360, MCP, A2A

The AA★3.1 (797)· London

The role involves designing AI solution architectures using Large Language Models, Retrieval Augmented Generation, AI agents, orchestration frameworks, and cloud-native architectures within Azure, AWS, or a comparable environment. The team within the Chief Operating Office builds enterprise AI to power products, services, and internal capabilities for the AA’s motoring organisation.