JPMorgan★3.9 (20k)· London

Work with KDB, Q, AWS, and optionally Terraform, Kubernetes, Python, C, C++, or Java. Develop and maintain applications storing large Options data sets for real-time and historical access within JPMorgan’s Equities Trading Data & Analytics team, migrating to AWS and re-architecting systems.

DeepL★3.8 (4)· London

You’ll work with C#/.NET Core, Cassandra, gRPC, Kubernetes, and AI-assisted tools like Copilot and Claude. You’ll join the Identity and Access Management team, which owns DeepL’s full identity stack—organization, group, account, consent, session management, SSO federation, SCIM provisioning, and the OIDC provider.

You’ll work with Python, FastAPI, TypeScript, React, and GCP. Electric Twin builds a behavioral simulation platform that creates “digital twins” of real populations, helping organizations test decisions with 95% accuracy.

Work with .NET, TypeScript, React, AWS, and CI/CD pipelines. Lead a small engineering team for a UK tech consultancy, owning technical delivery and architecture on client projects. Act as the technical face of projects from day one.

You'll work with Python (FastAPI/Django), Svelte/TypeScript, and AWS to build features across a payments and discovery platform. Tab is a YC-backed travel fintech enabling 100,000+ global tourism businesses to accept payments in 100+ currencies.

You will work with C#, Python, TypeScript, JavaScript, React Native, AWS or Azure, and various databases (relational, graph, document, key-value) plus SQL. The role supports critical projects aligned with Net Zero ambitions.

You will work with Java, Spring Boot, microservices, REST APIs, AWS, DevOps and CI/CD pipelines. You’ll lead client projects for a global technology consultancy, mainly in financial services, focusing on migrating legacy systems to AWS and introducing cloud deployments. As Principal Java Developer, you will lead projects, but team size isn’t specified.

Build UI components using Vue.js, React, or Angular, plus JavaScript, HTML/CSS, and Figma. You'll join TransPerfect TechOps, which develops workflow improvements, core services for the GlobalLink platform, and scalable client interfaces. Work within an Agile (SCRUM/Kanban) team.

NatWest Group★3.7 (1.2k)· London

Leading a team building cloud-hosted, event-driven microservices at NatWest Boxed, you will manage software and quality engineers across empowered squads while working with AWS, Google Cloud Platform, Java, Python, JavaScript, ReactJS, AngularJS, Kafka, Hadoop, PostgreSQL, Snowflake, and GitLab.

SS&C★3.2 (1.7k)· London

Design, develop, and maintain automated test suites using C#, BDD frameworks (SpecFlow/Reqnroll), GitHub Actions, Playwright, and Selenium WebDriver. You will integrate AI-powered tools like Claude Code and GitHub Copilot to accelerate testing across Calastone's financial products, a global funds network.

Atlassian★3.9 (61)· London

Leads a team of forward-deployed engineers building AI-powered solutions with Python, JavaScript, APIs, microservices, and LLMs. The team partners directly with top organizations to apply Atlassian’s AI capabilities to solve real-world problems.

You’ll work with JavaScript, TypeScript, React, Next.js, Node.js, Python, WebGL, Three.js, Unity, Unreal Engine, TouchDesigner, LLMs, AI agents, ComfyUI, vector databases, AWS/GCP/Azure, and Figma. At WPP Production, a global content production company, you’ll rapidly prototype and scale interactive digital experiences, bridging software engineering and creative design. You will line-manage and mentor mid-level and junior developers.

Verisk★3.5 (361)· London

Use TypeScript, JavaScript, Angular, Node.js, Azure or AWS, and microservices to design and build large-scale, cloud-native software solutions for Verisk’s insurance analytics platforms. You will shape technical architecture across multiple products and teams.

Backend engineer designing and evolving Python microservices with Django/DRF, FastAPI, Postgres, Redis, Celery/RQ, RabbitMQ/SQS, Docker, K8s/ECS, AWS, and OpenTelemetry/Grafana. You will refactor and build scalable systems for AI and CV workloads that help patients and clinics diagnose and plan physical appearance improvements. You will also triage production bugs, mentor teammates, and contribute to architectural roadmaps.

Software engineer role at UnderwriteMe, an Insurtech company building underwriting decision engines and insurance marketplaces. The role involves Java, Kotlin, Spring Boot, AWS, cloud-native development, and CI/CD, owning the full software lifecycle. Engineers lead technical initiatives, mentor peers, and collaborate with product managers.

NatWest Group★3.7 (1.2k)· London

Back End Engineer at NatWest Group's NatWest Boxed, working with Java, Spring Boot/Micronaut, Kubernetes/Docker, AWS, and Kafka/event sourcing. You'll build the NatWest Boxed technology product on cross-functional mission teams, develop reusable code, and support junior engineers as a subject matter expert.

Tesco★3.5 (25k)· London

Work with .NET/C#, Java, Cassandra, Docker, HAProxy, Azure DevOps, and TDD. The payments service team delivers HTTP services managing payments at global scale for Tesco, handling 100M+ transactions daily. You'll also mentor and develop others.

Java, RESTful APIs, PostgreSQL/Oracle DB, Kubernetes, AWS, and SQL. The role involves building and maintaining microservices, APIs, and databases; writing unit tests; deploying on Kubernetes; and setting up monitoring.

Work with React, Node.js, ThreeJS/WebGL, and SASS, plus WebAR (8th Wall), Unreal, Blender, and AI frameworks like TensorFlow. As part of Powster (Vista Group’s creative studio), you lead the full development lifecycle of immersive WebGL websites and AR experiences for major movie, music, and streaming clients.

You'll build web-based UI features using Vue and Tailwind, write production-grade code, and deploy infrastructure with AWS and Terraform. The company partners with a fintech player to optimize financing and return metrics. JavaScript and TypeScript proficiency is required; prior experience with Vue, Tailwind, AWS, or Terraform is a bonus.

Work with Python and Java building performance-critical systems for a front-office trading technology team at a high-performance investment firm. You will engineer the platform’s underpinnings, collaborating closely with front-office teams on business-critical applications.

Design and maintain automated test suites using C

Lead a team building scalable cloud-hosted systems using Java, Python, ReactJS, AWS, and Google Cloud Platform. This engineering manager role owns technical stewardship for product mission teams within NatWest Boxed, a high-performing product engineering organisation. Direct reports include software and quality engineers across empowered squads.

You will work primarily with JavaScript/TypeScript, React, and AWS, architecting full-stack apps alongside Node, Webpack, MobX, Redux, Spring Boot, and Kafka. As part of the Transaction Banking Digital Engineering team, you will lead the design and implementation of UI components for a scalable, cloud-based platform providing corporate cash management solutions via APIs, portals, and SWIFT. You will manage a group of engineers, contribute to the product roadmap, and drive engineering culture.

You will work with Python (FastAPI), AWS, LLMs (OpenAI, Gemini, Anthropic), RAG, agentic workflows, MCP servers, and CI/CD pipelines. This player-coach role leads a squad building AI-driven solutions for BCG’s internal products and processes, delivering GenAI applications while cultivating engineering talent.