ServiceNow Architect using CSM, ITSM, ITOM, CMDB, TNI, IntegrationHub, JavaScript, Flow Designer, and TMF APIs to design and configure telecom BSS/OSS/Network solutions. The role leads ServiceNow implementation and integration for a consulting practice transforming telecom operator operations.

You'll work with Python, PostgreSQL, MySQL, BigQuery, FastAPI, Flask, GCP/AWS, and CI/CD pipelines. You'll join the commercial performance insights squad to build data pipelines and event streams for monitoring algorithmic insurance underwriting, including Monte Carlo simulation.

You will work with Python, FastAPI, Postgres, Docker, and LLM agentic systems (prompting, tool-calling, RAG). Orbital is an agentic LLM platform answering operational and analytical questions for energy and heavy industry clients. This is a founding-level QA role with no stated team size.

Java, integration patterns, CI/CD, observability, and cloud-native services. Leads a team building and operating reusable build kits, deployment automation, and common integration platform services. Manages and coaches a multi-skilled engineering team.

You will work with n8n, GPT, Claude, Gemini, and other LLMs, using APIs, webhooks, SQL, Python, and JavaScript to build production-ready AI agents and automations. Geomiq operates a digital manufacturing platform connecting engineers with global partners, and you will automate workflows across Sales, Operations, Supply Chain, Finance, and Product teams as their first dedicated AI builder.

You will work with Java microservices, Spring Boot, Python, SQL, Snowflake, dbt, Airflow, LangChain, Sagemaker, and MLflow. The data science team builds ML solutions for risk-based decisioning, pricing, and operational automation in insurtech/fintech. This is a hands-on leadership role—you will lead and develop the team while setting technical standards.

Google★4.3 (6.2k)· London

Works with Python, Go, Java, C++, SQL/NoSQL, APIs, HTTP, LLM APIs, vector databases, Docker, Linux. As a Customer Engineer on Google Cloud, builds rapid prototypes and demos for customers during pre-sales, supporting technical validation for AI-native solutions.

You’ll work hands-on with React, JavaScript, Python, GCP, Terraform, Git, and AI/ML tooling. As part of ace, you’ll own the build-out and enterprise adoption of a leading global hedge fund’s in-house automated testing platform, with full-stack development, CI/CD, and governance. You’ll mentor a small QA function transitioning from manual testing.

You will build a bespoke blockchain from scratch using Rust, C++, CUDA, Solidity, TypeScript, React, and Node.js. Arena Entertainment builds digital entertainment platforms including MetaWin and WOW Vegas, and is creating a new blockchain for gaming and DeFi.

Work with Java Spring, Web3J, Web3JS, Solidity, Git, Jira, Jenkins, Helm Charts, and DevSecOps tooling. You will build the backend of enterprise-grade web applications for Citi’s Integrated Digital Assets Platform (CIDAP), leveraging blockchain technology.

Build Python (FastAPI/Flask) features for the NHS Digital Onboarding Service (DOS) within a serverless architecture, paired with a NextJS/React client frontend. The service is part of the NHS API Platform.

Build backend services for Citi’s Integrated Digital Assets Platform using Java, Spring, Web3J/Web3JS, and Solidity. Work on blockchain integrations, node connectivity, smart contracts, and microservices. This is a lead engineering role on the core team.

Backend QA Engineer role at Lush Digital, testing GraphQL/REST APIs, databases (SQL/NoSQL), and microservices using TypeScript or Python, with tools like Postman, k6/JMeter, Kafka/RabbitMQ, Docker, and CI/CD pipelines. The team ensures backend reliability, security, and performance across Lush's global digital platform transformation.

Senior UI Software Engineer role at Citi building trading GUIs for the Foreign Exchange business, covering full development lifecycle with technical leadership. You will use TypeScript, React, JavaScript, HTML5/CSS, FDC3, REST/WebSocket APIs, Kafka/Solace/Tibco, and CI/CD tools like Jenkins, with desktop container experience in Chromium/Electron/OpenFin.

Build Web3 components and smart contracts in Solidity for Citi’s Digital Assets Platform, integrating with Ethereum, Hyperledger Besu, Solana, or Canton using Java/Spring, Node.js, and Web3 libraries like Web3J, Ethers.js, or Viem. The team develops tokenization, on-chain settlement, and blockchain protocol connectors for institutional digital finance.

FDM Group★2.9 (270)· London

Java, Spring Boot, React/React Native, AWS, microservices, RESTful APIs, CI/CD, SQL, TDD/BDD. The role is within a key engineering team delivering strategic lending and banking technology initiatives for a financial-services client.

You will work with C++ and Java to design, develop, and enhance matching engines, FIX gateways, and other electronic trading applications. As part of Cantor Fitzgerald’s Electronic Products department, you will build high-performance, low-latency solutions for the financial services business.

You will use Python, JavaScript, Microsoft 365, Power Platform (Power Apps, Power Automate), and APIs to design, build, and enhance internal applications, automations, and AI-powered solutions. This role supports a technology-led company investing in AI and automation by developing internal tools that improve business efficiency and productivity.

Work with Kotlin, SQL/noSQL, TensorFlow Lite, Coroutines, Flow, and REST/gRPC to build a production Android app for an AI-powered proactive smart assistant that handles multi-step workflows and real-world task completion.

Sainsbury’s★3.5 (16k)· London

As Engineering Manager in Integration, you'll lead and coach a multi-skilled team building reusable integration kits, common components, and platform services using JAVA. You'll drive CI/CD, observability, and cloud-native services to standardise how integrations are built, deployed, and operated across Sainsbury’s.

Work with Python, SQL, JavaScript/TypeScript, NumPy, Pandas/Polars, visualization libraries, and deep learning frameworks (PyTorch, JAX, or TensorFlow) to design and deploy full-stack data-driven applications and machine learning solutions. You will be embedded with Arsenal's Men’s First Team Analysis department, building tools that directly support coaching and analysis workflows.

You will work with LLMs, chain-of-thought prompting, RAG architectures, multi-agent tool use, Python, and FastAPI to build cognitive systems. The Science team designs memory and decision-making frameworks to create synthetic populations for behavioral prediction.

Senior Java Developer using Java, multithreading, concurrency, data structures, algorithms, and Linux internals. The role is within a global consultancy delivering software engineering and transformation projects, primarily for banking and financial services.

You will work with Azure, CI/CD pipelines, test automation, and modern front-end frameworks/libraries, applying WCAG 2.2 AA and Core Web Vitals. As a Lead Engineer on Canada Life UK’s Digital technical leadership team, you will specialise in UI/UX, accessibility, and front-end performance for customer-facing digital products serving retirement, investment, and protection needs.

VueJS 3, JavaScript (ES6), HTML5, CSS3 (SASS), RESTful APIs, GIT, Azure DevOps (CI/CD), Jest, Cypress/Playwright. Build and maintain modern web applications, developing reusable UI components and ensuring responsive, accessible, performant frontends.