CrowdStrike★3.8 (54)· London

You will work with TypeScript, Vite, Playwright, Vitest, GitLab CI, and Jenkins to lead the shared UI quality platform at CrowdStrike, a global cybersecurity leader. The platform consolidates testing frameworks, CI pipelines, and quality signals that hundreds of UI engineers rely on across the organization.

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 GA4, Google Merchant Center, and Excel/Google Sheets, with Python, JavaScript, PHP, or HTML also beneficial. As the autonomous SEO lead for Karen Millen, you'll drive organic traffic, optimize on- and off-page elements, and spearhead AI Optimisation (AIO) and Generative Engine Optimisation (GEO) strategies for the brand's website.

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.

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.

You’ll work with JS/TypeScript, React, Node, and Azure, implementing infrastructure as code and using AI tools throughout. PharmLogic provides a compliant data layer for community healthcare, letting pharmacies use patient data for growth and communications—NHS-assured and live in hundreds of pharmacies. You own product decisions end to end as the first engineer, working directly with the CEO and founding team.

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 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.

Cushman & Wakefield★3.6 (2.3k)· London

You will work with Microsoft Azure, VMware (AVS, NSX-T, Aria Operations, Automation, HCX), Azure DevOps, GitHub, PowerShell, Terraform, Ansible, Bicep, and various Azure services. You will implement and manage cloud solutions for Cushman & Wakefield, a global commercial real estate services firm.

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.

National Gas★0.0 (10)· London

Develop and maintain backend services using ASP.NET Core, REST APIs, SignalR, and WebRTC, with SQL Server/MariaDB, Entity Framework Core, and Dapper. Deploy on Azure (App Services, SignalR Service) with Docker and CI/CD pipelines. This role owns the backend architecture for existing web platforms and a new real-time operational system.

You’ll build cloud-native apps with C#/.NET and Azure, design Microsoft Fabric and Medallion data pipelines, handle ETL/ELT, SRE, and integrate LLMs via OpenAI/Azure OpenAI. Based at startup Lineten Ltd., you’ll join a small team enabling internal and external data self-service analytics.

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.

You will work with C#, .NET (.NET Core/8+), SQL

Lead zero-to-one development of a fintech platform for emerging-market payments, using TypeScript, React, and Node to build ledger, custody, and settlement systems. You'll architect full-stack features integrating digital assets with traditional banking rails.

You will work daily with TypeScript, React, and Python across the full DeepEditor stack. The product is an AI-powered performance editing tool for Hollywood studios. As the technical anchor, you will mentor a growing team of fifteen engineers.

You'll build interactive 3D subsurface visualizations using TypeScript, React, WebGL/Three.js, deck.gl, or Cesium, integrating explainable ML models into a platform for mining decisions. Material Difference is a Cambridge spin-out using explainable AI for critical mineral exploration. As the first product-focused engineer, you'll own the UX and visualization layer.

Build AI-enabled products using Python, TypeScript, Java or Go at a YC-backed AI start-up. Work directly alongside founders to ship customer-facing solutions and shape both product and engineering culture from day one.

Deloitte★3.9 (14k)· London

You will work with Python, NumPy, Pandas, scikit-learn, LangChain, Hugging Face, LlamaIndex, Azure Machine Learning, Foundry, Git, and Agile practices. The team is Deloitte’s Tax Digital Innovation AI & Data Studio, which researches, builds, and delivers analytics and AI-driven solutions for tax and legal clients.

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.