You'll work with AI agents, LLMs, test frameworks, CI tooling (GitHub Actions), and observability stacks (Datadog, Sentry, Grafana) to automate quality across Lendable's fintech credit products. The role enables cross-functional product teams to maintain high quality through hands-on coding, AI-assisted test authoring, and shift-left practices.

Senior Quality Engineers will build AI Agents, test frameworks, CI tooling and helpers using LLMs and AI tooling, working with GitHub Actions and observability (Datadog, Sentry, Grafana) across an AI-assisted testing function. The team defines Lendable's test pyramid, improves E2E automation, and partners with product and engineering to shift quality left across credit products.

You'll work with Java (8, 17, 21), React/TypeScript (or Angular/Vue), and REST APIs to sustain current environments and deliver new capabilities across full-stack development. You will also mentor less experienced engineers through code reviews and technical guidance.

Full Stack Engineer role at G LNK (YC W25), an AI healthcare commercial intelligence platform. You will build AI-driven matchmaking systems using React, TypeScript, and Python, managing a database of 9M+ clinician profiles. Work directly with founders on scalable data pipelines and healthcare commercialization workflows.

Glasswall★0.0· London

You'll work with C++, C#, Python, Assembly, and tools like static/dynamic analyzers, debuggers, disassemblers, detonation chambers, and agentic AI. As a Senior Security Researcher on a small team, you'll investigate threats to Glasswall's Content Disarm and Reconstruction technology through vulnerability research, penetration testing, and malware analysis.

Fitch Group★4.5 (4)· London

You’ll work with Kubernetes, Docker, AWS, Azure, Datadog, GitHub Actions CI/CD, AWS Bedrock/SageMaker, and script in Python, PowerShell, or Bash. The role embeds within Fitch

Tech Lead role using Java, Kotlin, Python, JavaScript/TypeScript, Spring, and Node.js to build cloud-based digital banking solutions. The consultancy helps clients build, launch, and run digital banks. You lead a team of engineers, contributing to system architecture, coding, and strategic decisions.

You'll work with AWS CDK, Kubernetes on EKS, CircleCI/GitHub Actions, Lambda, ECS, Redshift, RDS, Kafka, Flink, Redis/Valkey, Datadog, and TypeScript/Python/Bash. The Platform Engineering team builds the tooling, automation, and infrastructure that development teams use to build, deploy, and run software on Sparta's commodity trading platform.

PlayStation★3.8 (164)· London

Design, build, and optimize data ingestion, transformation, and enrichment pipelines using SQL, Snowflake, Python, and REST APIs. You will join the Security Data Analytics team at PlayStation, developing data products and pipelines that help Information Security teams understand security posture and risk trends. This is an individual contributor role; no team size is stated.

Luxoft★4.5 (669)· London

Lead the architecture of production-grade LLM orchestration and multi-agent systems using LangGraph or LangChain, working with Python (asyncio, FastAPI), TypeScript (Next.js/React), AWS (ECS Fargate, Lambda, SQS, Aurora, Neptune), and AWS CDK or Terraform. The team is developing an Agentic AI solution to generate investment insights from sales and research materials for client meetings.

Sumitomo Group★3.7 (463)· London

Work with SQL Server, Azure, Python, C#/.NET, JavaScript, Alteryx, Microsoft Fabric, PowerBI and DealCloud. Build backend databases, ML models and front‑end tools for the Private Markets team’s European LBO direct lending and private credit vehicles. The Data and Analytics team is adding its third key member to lead data‑platform engineering.

NatWest Group★3.7 (1.2k)· London

You will work with GitLab, Artifactory, Ansible Automation Platform, Kubernetes, ArgoCD/Flux, and cloud-native technologies. You will lead the Engineering Platforms team delivering modern software development tools for over 25,000 engineers across the bank, shaping the CI/CD strategy, observability stack, and automation frameworks.

You will work with ReactJS, NodeJS, MongoDB, and AWS. The team builds a web-based SaaS platform for private equity, venture capital, and alternative investment firms to manage investing, fundraising, and operations. This senior role includes leading and mentoring junior engineers.

KPMG★3.8 (9.9k)· London

Develop web applications using C#, ASP.NET Core, TypeScript, React or Angular, and deploy on Azure Kubernetes Service with containers. You'll work on modernising tax and legal services for KPMG, building cloud-first microservices and client-facing portals for a team of 300+ technologists.

Lead Java Developer (Contract) role using Java 17+, Spring, Spring Boot, Azure, containerisation, serverless tech, Terraform, and Python. Building enterprise-quality optimisation and ML solutions for field operations. Leading development, API design, and tech decisions.

WPP★3.7 (378)· London

Lead Java Developer role at WPP's Satalia building a new logistics optimization platform using Java 17+, Spring, Spring Boot, Azure, serverless and containerized tech, Terraform, and some Python, with API design and tech selection duties. The team develops optimization and ML-based enterprise solutions, and the role leads a development team.

NatWest Group★3.7 (1.2k)· London

You'll work with JavaScript, ReactJS, AngularJS, Python, Java, AWS, GitLab, Google Cloud Platform, Kafka, Hadoop, PostgreSQL, and Snowflake. The Engineering Platforms team delivers a modern software development toolchain for engineers across the bank, and you'll design, produce, test, and implement working software.

Microsoft★4.2 (9k)· London

You'll work with languages including C, C++, C#, Java, JavaScript, or Python and cloud AI platforms (Azure ML, OpenAI) to build production-ready systems. As a Forward Deployed Engineer, you'll embed with UK Defence and Intelligence customer teams, solving their toughest challenges with a security-first mindset.

You will build Microsoft 365, Azure, and AI-enabled solutions using SharePoint Online, TypeScript/SPFx, Microsoft Graph, PnP PowerShell, Azure Functions, Logic Apps, Azure OpenAI, .NET/C#, and Terraform/Bicep, with Azure DevOps/GitHub. Advania UK is a Microsoft partner delivering transformational IT services to clients.

Work with Kotlin, Java, Python, TypeScript, Kafka, Flink, Redis, and clustered Postgres on AWS/GCP to design, build, and maintain backend services for a real-time, data-driven commodity trading platform. You will own features end-to-end, optimizing pipelines for low latency and high throughput.

You’ll work with Kotlin, Java, Python, TypeScript, AWS (Lambda, ECS, EKS), Kubernetes, Kafka, Flink, Redis/Valkey, RDS, Redshift, and infrastructure as code (AWS CDK, Terraform, CloudFormation). As a Backend/SRE Engineer on the Platform Engineering team, you’ll split time between building distributed services for real-time commodity market data and ensuring those systems are observable, resilient, and cost-efficient.

Work

SBS★4.2 (6)· London

You'll work with AWS, Docker, Kubernetes, and CI/CD pipelines, using IaC, scripting languages like Python/Go, and monitoring/logging tools. You will build and maintain cloud/container infrastructure and automation for SBS’s Digital Engagement products (web, mobile, banking capabilities) and its AI Platform, supporting reliability and scalability in a regulated industry. This is a hands-on role collaborating with product engineering, AI, and platform teams.

You'll build the UK's home decarbonisation platform using TypeScript, React, Node, Prisma, and tackle heat-loss physics, geospatial analysis, LiDAR 3D models, and offline-first PWAs. You join a 13-person engineering team, taking technical ownership as a senior IC transitioning into a lead role or a deeply technical existing lead.

You'll work daily with TypeScript and optionally Elasticsearch. The company builds an AI-powered platform for charities and