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Senior Product Engineer (Python/Go/TypeScript) – Production Agentic AI

owen thomas | b corp™ • United Kingdom
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AI Summary

Senior Product Engineer role focused on designing, building, and scaling backend services and production-grade AI applications (LLM integrations, agent workflows) for a high-growth B2C start-up in London. Requires 3+ years of backend engineering experience, hands-on AI system deployment, and a product-minded mindset with ownership of end-to-end solutions. Strong Python/Go expertise and system design fundamentals are essential.

Key Highlights
Highly competitive compensation: £100,000–£250,000 base salary + meaningful equity
Work on sophisticated AI systems operating in production, not experimental proof-of-concepts
Significant technical ownership and influence over architecture, with opportunities for career progression

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Key Responsibilities
Designing, building, and scaling backend services
Developing production-grade AI applications, agent workflows, and LLM integrations
Improving reliability, performance, and scalability across cloud-native systems
Taking ownership of features from initial design through to production
Technical Skills Required
Backend Engineering Python Production AI/LLM Systems

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Benefits & Perks
£100,000–£250,000 base salary + equity
Visa sponsorship and relocation support
Comprehensive benefits and professional development support

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Nice to Have
Go
Django
GCP, Terraform, Celery, RAG, multi-agent systems, LLM evaluation frameworks

Job Description

The role involves designing, building, and scaling backend services, developing production-grade AI applications, agent workflows, and LLM integrations. Responsibilities include working on agent orchestration, retrieval systems, and AI infrastructure, improving reliability, performance, and scalability across cloud-native systems, and taking ownership of features from initial design to production.

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Job Overview
Posted Nov 11, 2026
Employment Full-time
Experience Mid-Senior level
Location United Kingdom
Category Programming
Company owen thomas | b corp™
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