Work with ClickHouse and other OLAP databases at petabyte scale, plus SRE tooling for observability, capacity planning, and incident response. You own reliability, performance, and security of the analytical data platform Mystra and its agentic AI layer MystraAI, and shape Data-as-a-Service. Line-manage a small team of IC2/IC3 engineers.

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.

Wise★3.5 (42)· London

You will work with Java, Spring Boot, AWS, Apache Kafka, and potentially Trino. The Pricing Core team builds and maintains the main pricing platform that enables Wise to price its products, processing over 100 million requests daily across critical paths.

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.

DeepL★3.8 (4)· London

Work with cloud platform engineering (IaaS/PaaS/SaaS), virtual and physical hardware, and SRE practices. The team provides tools and services to monitor and run DeepL's Language AI platform, collaborating with product development teams to embed reliability best practices and meet business SLAs.

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.

Imperial College London★4.2 (238)· London

You will use Python, PyTorch, NumPy, SciPy, Pandas, Anaconda, Jupyter and discrete-event simulation to develop performance, cost and reliability models for distributed Foundation Model inference across a Cloud-Edge-IoT computing continuum. The research, part of the f-inference project, focuses on KV-store caching policies, backpressure control, and stochastic multi-layer network models.

Capgemini★3.7 (11k)· London

You will work with ITIL 4, ServiceNow, Jira Service Management, Freshworks, Azure, AWS, Google Cloud, AI/automation and AIOps tools. As a consultant in Capgemini Invent’s Cloud Advisory unit, you support clients in modernising service management and operations through cloud, AI, and automation adoption.

Lead cloud platform engineering for Totara's global SaaS learning platform, using AWS, Terraform, containers, orchestration, networking, and cloud security. The team provisions, deploys, operates, observes, secures, and optimizes infrastructure supporting thousands of dedicated customer deployments.

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.

HCLTech★3.7 (11k)· London

You will work with Python, Go or Java, TypeScript, REST/gRPC, Gemini 3.0, Vertex AI, BigQuery, Vector Search, AlloyDB, Apache Beam/Dataflow, Agent Development Kit, LangGraph, and GKE. The role deploys Gemini Enterprise Agent Platform, designs multi-agent systems, and builds RAG pipelines to integrate with legacy APIs and ERP systems. Clients are in FS, RCPG, LSH, and manufacturing domains.

Sonar★5.0 (2)· London

You will work with Python, core ML frameworks, and post-training techniques including GRPO, PPO, RLVR, SFT, PEFT, and preference/safety alignment (Rust or SonarQube flagship languages are a plus). You will join a cross-disciplinary team developing advanced products that post-train models to power enterprise agentic coding practices, ensuring code meets enterprise standards.

Croud★4.4 (14)· London

Leads technical SEO and Web Experience, optimising client websites for search and AI chat engines using HTML, CSS, JavaScript, Chrome DevTools, Lighthouse, PageSpeed Insights, WebPageTest, Apache configs, CLI tools, Jira/Azure DevOps, and structured data. Oversees site migrations, platform rebuilds, and technical roadmaps as Croud’s senior technical authority.

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.

Bloomberg★3.8 (1.1k)· London

You will work with Go, C++, Python, Vitess, MySQL, MyRocks, RocksDB, and InnoDB. The team builds Bloomberg’s distributed OLTP storage platform, operating over 10,000 MySQL shards to serve critical financial data and building custom read/write APIs. The role covers the entire storage fleet at thousands-of-shards scale.

Junior Software Engineer role supporting in-house fund management tools for Legal & General's Index Analytics team, using Python (pandas, OOP), SQL (PostgreSQL, Snowflake), git/GitHub, and supporting CI/CD pipelines. The work covers portfolio performance analysis, process automation, and data pipelines for fund managers. Exposure to JavaScript, Flask/FastAPI is helpful.

Work with RPA platforms (UiPath, Automation Anywhere, NICE), machine learning, chatbots, content intelligence tools (ABBYY), and languages such as C#, .NET, Java, Python, SQL, HTML, or JavaScript. The company focuses on robotic process automation, delivering solutions for clients primarily in the UK, US, and Europe.

Design, develop and maintain software solutions using C#, Java, C++ or Python with Agile methodologies. No specific product or project is described; the company builds high-quality software applications.