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Lead Software Engineer

Concentrix · Luton, GB

Job description

  • We're Concentrix. The intelligent transformation partner. Solution-focused. Tech-powered. Intelligence-fueled.

    The global technology and services leader that powers the world’s best brands, today and into the future. We’re solution-focused, tech-powered, intelligence-fueled. With unique data and insights, deep industry expertise, and advanced technology solutions, we’re the intelligent transformation partner that powers a world that works, helping companies become refreshingly simple to work, interact, and transact with. We shape new game-changing careers in over 70 countries, attracting the best talent.

    The Concentrix Technical Products and Services team is the driving force behind Concentrix’s transformation, data, and technology services. We integrate world-class digital engineering, creativity, and a deep understanding of human behavior to find and unlock value through tech-powered and intelligence-fueled experiences. We combine human-centered design, powerful data, and strong tech to accelerate transformation at scale. You will be surrounded by the best in the world providing market leading technology and insights to modernize and simplify the customer experience. Within our professional services team, you will deliver strategic consulting, design, advisory services, market research, and contact center analytics that deliver insights to improve outcomes and value for our clients. Hence achieving our vision.

    Our game-changers around the world have devoted their careers to ensuring every relationship is exceptional. And we’re proud to be recognized with awards such as "World's Best Workplaces," “Best Companies for Career Growth,” and “Best Company Culture,” year after year.

    Join us and be part of this journey towards greater opportunities and brighter futures.

Job Details:

Lead the technical direction of AI-native product development - owning architecture, raising engineering standards, and helping the team ship with confidence. You bring strong fullstack depth, a pragmatic mindset, and the ability to grow the engineers around you.

What You'll Do:

  • Technical Leadership

  • Own key architecture decisions across backend, AI, and frontend - communicate trade-offs clearly and drive them to closure.

  • Set and uphold engineering standards: code quality, testing, observability, and delivery practices.

  • Identify technical risk early and propose practical paths forward.

  • Stay hands-on - lead by example through code, review, and design.

  • Engineering

  • Design and build scalable backend services and AI-powered features end-to-end.

  • Architect LLM integrations, RAG pipelines, and data flows that work reliably in production.

  • Build frontend experiences that surface AI capabilities intuitively.

  • Champion test-first development, observability, and automated delivery.

  • People & Collaboration

  • Mentor and grow engineers through review, pairing, and honest feedback.

  • Partner with product and other teams to align technical work with business outcomes.

  • Lead design discussions and help the team make good decisions faster.

What We're Looking For:

  • Technical Depth

  • 8+ years of fullstack engineering experience, with a track record of shipping production systems.

  • Strong fullstack background - comfortable across backend services, APIs, and modern frontend development.

  • Experience building and shipping AI or data-intensive features in production.

  • Solid grasp of software design principles, distributed systems, and delivery practices.

  • Hands-on with CI/CD, containerisation, and production observability.

  • Leadership

  • Track record of owning technical strategy and driving outcomes - not just executing tasks.

  • Experience mentoring engineers and raising the bar across a team.

  • Clear communicator: can translate complexity for both technical and non-technical audiences.

  • Backend & AI

  • Python; strong async, Pydantic, and API design.

  • FastAPI in production; RESTful and event-driven patterns.

  • Redis — caching, pub/sub, task queues (Celery / RQ / ARQ).

  • LangChain or similar; RAG: chunking, embeddings, retrieval.

  • Prompt engineering; hands-on with OpenAI, Claude, or Gemini.

  • Vector stores: Pinecone, pgvector, or equivalent.

  • Frontend

  • React with hooks, context, and TypeScript.

  • Streaming UI patterns — SSE, WebSockets.

  • Component testing with React Testing Library / Vitest.

  • Delivery & Quality

  • CI/CD with GitLab or equivalent; Docker; Kubernetes or ECS familiarity.

  • TDD mindset — pytest and Jest/Vitest, coverage gates enforced in CI.

  • Observability: OpenTelemetry, Grafana, or similar.

Working Style:

We move fast using AI-assisted workflows. As Lead, you model this - using modern tooling daily while maintaining clear code ownership, thorough testing, and sound architectural judgment. You set the pace and the standard. Speed and craft are both the expectation.

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