Mid Product Engineer (Backend) | Python, SQL, RAG, AWS | AI & Data Infrastructure, Start-up | High Ownership, 0→1 Product Builds | UK remote | £60-80k base

Owen Thomas | B Corp™; Greater London; Hybrid; GBP 60,000 - 80,000; Full time

Benefits offered by this job

Equity

Remote-friendly London + UK

Job summary

Owen Thomas | B Corp™ is seeking a backend-focused Product Engineer to own and ship data-centric features. You will work on Python APIs, SQL workloads, data pipelines and AI-enabled capabilities, taking ideas through production with significant ownership.

You’ll collaborate with senior engineers and product leadership, writing robust production-grade code in a fast-paced, AI-native environment. Remote UK flexibility is available, with a base of £60-80k and equity opportunities.

Qualifications

• 2+ years commercial software engineering experience.
• Strong SQL fundamentals.
• Product mindset and genuine ownership.
• Comfortable working with ambiguity.
• Curious about AI, LLMs and modern development tooling.

Responsibilities

• Build backend services and APIs in Python.
• Work with SQL / PostgreSQL.
• Build data pipelines and data-intensive features.
• Develop RAG, retrieval and semantic search capabilities.
• Build production AI/LLM features.
• Take product features from idea to production.
• Contribute across the stack when required.
• Collaborate with senior engineers and product leadership.

Skills

SQL

Ownership

Product mindset

Ambiguity tolerance

AI interest

Tools

AWS

TypeScript

Job description

The Company

We're partnering with an early-stage AI company building data-intensive products that help organisations make better decisions from complex information.

They're combining software engineering, data infrastructure, retrieval and applied AI to build a new generation of intelligent products.

They already have customers and are entering their next stage of growth, with a major new product direction and an engineering team to build.

The Role – Product Engineer (Backend) | Python, SQL, RAG, AWS | AI & Data Infrastructure | High Ownership, 0→1 Product Builds | UK remote | £60-80k base

You'll join a small engineering team with significant ownership from day one.

This is a backend-focused Product Engineering role, primarily working across Python, SQL, data and AI, while contributing across the wider product when needed.

You'll work on real customer problems rather than isolated tickets — taking features from an ambiguous idea through to production.

What You'll Be Doing - Product Engineer (Backend) | Python, SQL, RAG, AWS | AI & Data Infrastructure | High Ownership, 0→1 Product Builds | UK remote | £60-80k base

• Building backend services and APIs in Python
• Working extensively with SQL / PostgreSQL
• Building data pipelines and data-intensive features
• Developing RAG, retrieval and semantic search capabilities
• Building production AI/LLM features
• Taking product features from idea → production
• Contributing across the stack when required
• Working directly with senior engineers and product leadership

Tech - Product Engineer (Backend) | Python, SQL, RAG, AWS | AI & Data Infrastructure | High Ownership, 0→1 Product Builds | UK remote | £60-80k base

AI is deeply embedded into how the team develops software. You'll be encouraged to use modern AI coding tools to move quickly, while understanding, testing and taking ownership of what you ship.

What They're Looking For

• 2+ years commercial software engineering experience
• Strong SQL / relational database fundamentals
• Product mindset and genuine ownership
• Comfortable working with ambiguity
• Curious about AI, LLMs and modern development tooling
• Happy contributing outside your core specialism when needed
• Startup mentality — adaptable, proactive and keen to move quickly

Nice to have:

• RAG / semantic search experience
• LLM or AI product experience
• TypeScript
• AWS
• Startup or scale-up experience

You don't need to tick every box.

They're particularly interested in engineers who are curious, adaptable and capable of taking ownership beyond their years of experience.

Interview Process - Product Engineer (Backend) | Python, SQL, RAG, AWS | AI & Data Infrastructure | High Ownership, 0→1 Product Builds | UK remote | £60-80k base

• Initial conversation
• 60-minute technical discussion

Why Join? - Product Engineer (Backend) | Python, SQL, RAG, AWS | AI & Data Infrastructure | High Ownership, 0→1 Product Builds | UK remote | £60-80k base

• Join an early-stage AI company at an important stage of growth
• Significant ownership from day one
• Build real production products across Python, data, RAG and AI
• Learn directly from experienced technical leadership
• Help shape a growing product and engineering team
• AI-native engineering environment
• London / remote flexibility
• Equity alongside salary

If you're a backend-focused Python Engineer who wants more product ownership, exposure to AI and the opportunity to grow quickly within an early-stage company, we'd love to hear from you.