Backend Engineer, Contractor | Python, FastAPI, AWS, TypeScript | Modern SaaS Infrastructure, Scale up | £550-700/day Outside IR35 | 6 Months, likely extensions | Hybrid (London) or UK remote Opportunity: We're working closely with an exciting scale up, who are looking for a Backend Python Engineer to join a modern SaaS platform building scalable systems for real-world data and operations. You’ll be part of a high-trust, product-focused team engineering robust backend services - using Python, FastAPI, AWS, and optionally TypeScript or Rust - to power core platform functionality. This is a backend-first role with deep ownership across API design, cloud infrastructure, and system reliability. It's ideal for someone who enjoys clean architecture, working closely with product teams, and writing services that operate at scale in a modern cloud environment. What You’ll Be Doing for this Backend Engineer, Contractor | Python, FastAPI, AWS, TypeScript | Modern SaaS Infrastructure, Scale up | £550-700/day Outside IR35 | 6 Months, likely extensions | Hybrid (London) or UK remote : • Designing and building internal and external APIs using Python (FastAPI/Django) • Contributing to architecture decisions, service design, and deployment patterns • Working on high-performance backend systems that power mission-critical workflows • Building infrastructure-aware services in AWS using Docker, Kubernetes, and Terraform • Collaborating across teams — including frontend (TypeScript) and infrastructure — to deliver high-quality outcomes • Owning your code in production: observability, alerting, incident response, and iterative improvement Core Skills We’re Looking For In this Backend Engineer, Contractor | Python, FastAPI, AWS, TypeScript | Modern SaaS Infrastructure, Scale up | £550-700/day Outside IR35 | 6 Months, likely extensions | Hybrid (London) or UK remote e : • Strong backend experience with Python and service frameworks like FastAPI, Django, or Flask • Solid understanding of cloud infrastructure (AWS), containerisation (Docker), and orchestration (Kubernetes) • Experience building and consuming APIs (REST/GraphQL), ideally with good database design (PostgreSQL, Redis) • Infrastructure-as-code familiarity (Terraform) and production-first thinking (monitoring, CI/CD, security) • Strong communication and autonomy — able to take loosely scoped problems and deliver quality solutions Bonus Points For Backend Engineer, Contractor | Python, FastAPI, AWS, TypeScript | Modern SaaS Infrastructure, Scale up | £550-700/day Outside IR35 | 6 Months, likely extensions | Hybrid (London) or UK remote • Experience with TypeScript on the backend or collaborating with TypeScript-based frontend teams • Exposure to Rust for performance-critical backend services (not required, but a plus) • Familiarity with event-driven architecture (e.g., Kafka, SQS) or distributed systems • Previous experience in early-stage, fast-paced environments with production ownership The Details for Backend Engineer, Contractor | Python, FastAPI, AWS, TypeScript | Modern SaaS Infrastructure, Scale up | £550-700/day Outside IR35 | 6 Months, likely extensions | Hybrid (London) or UK remote • Rate: £550-700/day • Outside IR35 • Duration: 6 months, likely to extend • Location: Hybrid (2–3 days/week onsite in London) | Can consider UK remote too • Start: ASAP If you’re a backend engineer who thrives in Python but enjoys working in modern, multi-language environments - and you care about building services the right way - we’d love to hear from you. Please apply here, and we will come back to you ASAP if it's a good fit :)