> Markdown version of [/jobs/ext/4132143-lead-full-stack-developer](https://www.wearedevelopers.com/jobs/ext/4132143-lead-full-stack-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Lead Full Stack Developer - **Company:** EPAM Systems, Inc. - **Location:** London, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Artificial Intelligence, HTML5, Automation of Tests, Microsoft Azure, C Sharp (Programming Language), Cascading Style Sheets (CSS), Software as a Service, Cloud Computing, Databases, Relational Databases, Github, Python (Programming Language), OAuth, Openid Connect, Standard Sql, Single Sign-On, Software Engineering, TypeScript, Enterprise Software Applications, ReactJS, Large Language Models, Multi-Agent Systems, Software Security, Generative AI, Backend, Agentic-AI, Git, Event Driven Architecture, AI Platforms, Front End Software Development, Restful APIs, Docker, Databricks, Web Api - **Published:** October 23, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=b97f5b56b0be763b ## About the Role * Strong experience developing production applications using React * Proficiency in TypeScript, JavaScript, HTML5 and CSS3 * Professional experience with .NET/C# or Python development * Experience designing and developing secure REST APIs and back-end services * Hands-on experience with Microsoft Azure and Databricks * Understanding of generative AI, large language models and AI-enabled application development * Strong knowledge of SQL, relational databases and enterprise system integration * Experience with Git-based development workflows and GitHub Actions CI/CD pipelines * Understanding of authentication, authorization, application security and cloud operations * Strong analytical, problem-solving and stakeholder communication skills Nice to have * Knowledge of retrieval-augmented generation (RAG), agent-based workflows or AI orchestration patterns * Experience with asynchronous processing, messaging or event-driven architectures * Familiarity with Docker and containerized application deployments * Experience working with OAuth 2.0, OpenID Connect and single sign-on solutions * Exposure to monitoring, observability and production support practices ## Description * Design, develop and maintain scalable full-stack applications using modern technologies * Build responsive user interfaces with React, TypeScript and related front-end technologies * Develop secure REST APIs and back-end services using .NET/C# or Python * Create reusable components, shared services and maintainable application architectures * Develop and integrate solutions using Azure and Databricks services * Implement AI-powered functionality using large language models, AI services and modern engineering frameworks * Design and support integrations with enterprise applications, databases and external APIs * Contribute to CI/CD pipelines, automated testing and software delivery processes * Ensure application security, reliability and performance through monitoring and best practices * Collaborate with cross-functional stakeholders to deliver technical solutions and continuous improvements