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.

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.

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.

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

DeepMind★5.0 (2)· London

Lead a team building and shipping generative AI applications using Google’s models, working with TensorFlow, PyTorch, and Hugging Face. The role translates AI research into real-world products, rapidly developing new features and collaborating with researchers and product managers. Team scope is not specified.

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.

Capgemini★3.7 (11k)· London

Works with Neo4j, Amazon Neptune, Azure AI Search, Elasticsearch, Pinecone, Python, Azure, AWS, Kubernetes, Docker, and CI/CD. Designs and implements an enterprise knowledge platform using knowledge graphs, RAG, and GraphRAG to enable AI agents across Insurance, Payments, and Healthcare domains. Leads platform strategy and cross-functional engineering teams.

Capgemini★3.7 (11k)· London

Designs and implements enterprise knowledge platforms for AI agents across Insurance, Payments, and Healthcare domains, using graph databases (Neo4j, Amazon Neptune, TigerGraph, ArangoDB), retrieval technologies (Azure AI Search, Elasticsearch, Pinecone, Weaviate, Qdrant), and Python on cloud-native stacks (Azure, AWS, Kubernetes, Docker).

Work with Python, C/C++, TensorFlow, PyTorch, and Embedded Development Kits to support customers integrating Innatera's Spiking Neural Processor technology for ultra-efficient AI at the edge. Act as technical advisor, translating customer feedback into product improvements, and conducting workshops and design reviews.

Quantiphi★3.3 (60)· London

You will work with AWS SageMaker, EKS, Lambda, API Gateway, CI/CD (CodeBuild/CodePipeline), MLflow, Kubeflow, Airflow, BentoML, KServe, Seldon, and Kubernetes. As an MLOps/AIOps Architect, you will architect end-to-end MLOps strategy and enterprise ML/LLM pipelines for Quantiphi, an AI-First digital engineering company serving Fortune 1000 organizations.

You will work with SQL, Python, AWS or Azure, Snowflake

Competition & Markets Authority★3.7 (15)· London

Data scientists join a ~20-person Data Science & Data Engineering team building tools on AWS, using Python, Git/GitHub, generative AI, agentic AI frameworks and web apps. The CMA regulates digital markets and protects consumers by analysing large-scale data and algorithms to ensure fair competition.

All Your BI★5.0 (5)· London

You will lead All Your BI's AI/GenAI work, setting technical direction for architecture, build-vs-buy, and production-grade LLM applications, RAG, agents, and tool-calling. You'll use Python, modern AI stack (Anthropic/OpenAI/open models, vector databases, orchestration), and LLMOps (evals, observability, guardrails). The team is a self-organizing, Holacracy-based data agency of 60+ people delivering managed BI services for logistics and industrial companies.

Work with Cypress, Playwright, Selenium, Appium, Postman, Jira, and Git to build and maintain automated test suites integrated into a CI/CD pipeline. As part of Reset Health's QA team, you will design manual and automated tests for web and native mobile apps while helping transition to greater automation and AI under an ISO13485 QMS.

NatWest Group★3.7 (1.2k)· London

You'll work with Cisco and Arista platforms, VxLAN, EVPN, Cisco Meraki, and multicast protocols to engineer and automate enterprise network infrastructure. This role supports NatWest Group's digital transformation, building secure, scalable network solutions for its financial services environment.