Owen Thomas | B Corp™
Product Engineer (Backend-Leaning) | Python, TypeScript, AWS | Billing, Pricing & Commercial Platforms | Energy / Trading | UK Remote | £500-550/day | 3-6 months | Outside IR35
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Product Engineer (Backend-Leaning) | Python, TypeScript, AWS | Billing, Pricing & Commercial Platforms | Energy / Trading | UK Remote | £500-550/day | 3-6 months | Outside IR35
The Company
We're partnering with an ambitious technology business building software within a highly regulated, data-intensive industry, where billions of data points, complex business rules and commercial workflows need to be processed accurately and at scale.
They're now looking for an experienced Product Engineer to help build the next generation of their commercial platform, with a particular focus on billing, pricing, settlements and high-volume transactional systems.
This is an opportunity to join a small, high-calibre engineering team where you'll have genuine ownership, influence technical direction, and solve challenging engineering problems from first principles.
The Role - Product Engineer (Backend-Leaning) | Python, TypeScript, AWS | Billing, Pricing & Commercial Platforms | Energy / Trading | UK Remote | £500-550/day | 3-6 months | Outside IR35
You'll join a product-focused engineering team building business-critical systems that sit at the heart of the platform.
This is a backend-first role (Python ≈70%) with exposure across the full stack, working on software responsible for complex commercial calculations, billing workflows, pricing logic and large-scale transactional processing.
Success in this role requires engineers who enjoy understanding complicated business domains, modelling real-world commercial rules and building highly reliable systems where correctness is just as important as performance.
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What You'll Be Doing - Product Engineer (Backend-Leaning) | Python, TypeScript, AWS | Billing, Pricing & Commercial Platforms | Energy / Trading | UK Remote | £500-550/day | 3-6 months | Outside IR35
- Designing and owning backend services in Python
- Building scalable billing, pricing and commercial platform functionality
- Developing APIs and workflows that process high volumes of transactional data
- Modelling complex business rules and financial calculations
- Working closely with Product to design solutions from first principles
- Contributing across the stack where appropriate (TypeScript)
- Improving reliability, scalability and engineering standards as the platform evolves
This is a pragmatic Product Engineering environment where engineers are trusted to own problems end-to-end and make meaningful technical decisions.
Tech Stack - Product Engineer (Backend-Leaning) | Python, TypeScript, AWS | Billing, Pricing & Commercial Platforms | Energy / Trading | UK Remote | £500-550/day | 3-6 months | Outside IR35
- Python
- TypeScript
- AWS
- PostgreSQL
- Modern API Architecture
- Distributed Systems
- CI/CD
What They're Looking For - Product Engineer (Backend-Leaning) | Python, TypeScript, AWS | Billing, Pricing & Commercial Platforms | Energy / Trading | UK Remote | £500-550/day | 3-6 months | Outside IR35
- 5+ years of commercial software engineering experience
- Strong production-grade Python
- Experience building billing, settlement, pricing or payments platforms
- Experience within the Energy sector, Utilities, Commodity Trading or Financial Trading is highly desirable
- Comfortable working with data-heavy systems and complex business logic
- Strong product mindset with a high level of ownership
- Excellent communication and collaboration skills
- Experience within startup or scale-up environments is advantageous
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Experience building platforms where transactional integrity, financial accuracy and scalability are business critical will be particularly valuable.
A collaborative interview process focused on practical engineering, product thinking and problem solving.
Why Join - Product Engineer (Backend-Leaning) | Python, TypeScript, AWS | Billing, Pricing & Commercial Platforms | Energy / Trading | UK Remote | £500-550/day | 3-6 months | Outside IR35
- Fully remote within the UK
- Work on highly complex commercial systems with genuine engineering challenges
- High ownership with direct influence on product and architecture
- Small, experienced engineering team
- Modern technology stack
- £500-550/day
If you've built billing engines, pricing platforms, settlement systems or other complex transactional software - and ideally have experience within the energy or trading sectors - this is an opportunity to apply that expertise to a product where your work will have a significant real-world impact.
Apply with your CV and we'll be in touch if there's alignment.
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