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# Staff Software Engineer

- **Company:** Lumina Tech Group
- **Location:** Greater London, UK
- **Experience:** Expert
- **Salary:** £150,000.0 - £250,000.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Cloud Computing, Distributed Systems, Python (Programming Language), Commercial Software, Redis, Systems Integration, TypeScript, Core Voice Platform, Large Language Models, Backend, Fastapi, Kubernetes, Apache Kafka, Serverless Computing, Web Api
- **Published:** August 30, 2026
- **Apply:** https://www.collegerecruiter.com/job/2825797259-staff-software-engineer

## About the Role

You'll likely have:

 * 5-10 years of commercial software engineering experience
 * Experience building and shipping production AI products
 * Hands-on experience with AI agents or LLM applications
 * Experience working within Seed or Series A startups
 * Strong cloud infrastructure knowledge
 * Experience with Kubernetes and distributed systems
 * A customer-first mindset and experience working directly with end users

Technical Skills

 * Python
 * TypeScript
 * FastAPI
 * AsyncOpenAI
 * httpx
 * Cloud infrastructure
 * Serverless architecture
 * AI Agents
 * LLM integrations
 * LangGraph
 * LangChain
 * Voice AI platforms
 * CRM integrations
 * ElevenLabs
 * Vapi
 * Retell AI
 * Redis
 * Kafka

What We're Looking For

You'll be someone who:

 * Loves building products from scratch
 * Enjoys solving difficult engineering problems
 * Has a startup mindset
 * Can balance speed with quality
 * Takes ownership
 * Communicates confidently with both technical and non-technical stakeholders

## Description

We're looking for an experienced software engineer with a strong backend focus who enjoys building products from the ground up.

You will be responsible for designing, developing and shipping production AI products, working across the full stack and partnering directly with customers to solve real-world problems.

This role suits someone who thrives in fast-moving startup environments and enjoys taking ownership from idea through to production.

Responsibilities

 * Design, build and ship production AI products end-to-end
 * Develop scalable backend services using Python
 * Build intelligent AI agents and LLM-powered applications
 * Work across the full stack using Python and TypeScript
 * Develop cloud-native applications using Kubernetes and serverless technologies
 * Integrate with third-party APIs and CRM platforms
 * Work directly with customers to understand requirements and deliver technical solutions
 * Help shape engineering best practices and technical architecture


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