Job Specifications
Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High-Throughput Data & API Platform, Scale-up | PS575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote
Opportunity:
We're partnering with a rapidly scaling AI infrastructure company, building the backend systems that power complex data pipelines and real-time APIs for global clients.
You'll work on the backbone of their platform - engineering high-performance Python services with FastAPI, integrating deeply with Kubernetes-native infrastructure, and deploying at scale in AWS.
This is a backend-first role where you'll design robust APIs, optimise cloud workloads, and ensure the platform runs reliably under heavy load.
What You'll Be Doing for this Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High-Throughput Data & API Platform, Scale-up | PS575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote
Designing and building internal & public APIs in Python (FastAPI) for high-throughput environments
Architecting services with reliability and scalability as core principles
Deploying containerised workloads in AWS via Kubernetes and Terraform
Collaborating closely with DevOps, ML, and product teams to integrate backend services into complex data ecosystems
Owning your code from design to production, including monitoring, logging, and on-call rotation
Core Skills We're Looking For in this Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High-Throughput Data & API Platform, Scale-up | PS575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote
Strong backend experience with Python and frameworks like FastAPI or Django
Deep AWS knowledge, especially around containerisation (Docker) and orchestration (Kubernetes)
API design skills for both internal and external consumption
Database skills with PostgreSQL, Redis, and/or other distributed stores
Comfort with IaC (Terraform) and CI/CD pipelines
Experience with other Backend languages like Go, Rust, C++ are beneficial
Bonus Points For:
Previous work on backend infrastructure for AI/ML or data-intensive platforms
Event-driven architecture experience (Kafka, SQS, SNS)
Startup or scaleup experience in high-availability environments
The Details For This Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High-Throughput Data & API Platform, Scale-up | PS575-725/day Outside IR35 | 6 Months+ | Hybrid, London or UK Remote:
Rate: PS575-725/day
Outside IR35
Duration: 6 months+, likely extensions
Location: Hybrid (London 2-3 days/week) or UK Remote
Start: ASAP
If you want to build backend services that form the foundation of next-generation AI and data platforms, we'd love to hear from you. Apply now and WE will be in touch quickly if it's a good match.
Backend Engineer, Contractor | Python, FastAPI, Kubernetes, AWS | High-Throughput Data & API Platform, Scale-up | PS575-725/day Outside IR35 | 6 Months+, likely extensions | Hybrid (London) or UK Remote
About the Company
Hey, we are Owen Thomas. We are a relationship first recruitment partner for Data, Product & Engineering, across Contract and Permanent roles in the UK & Europe.
Humanness matters. We believe that empathy is the core of great recruitment; bringing opportunity and businesses to life, beyond what a person can see on a website.
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Our mission: To be leaders within our specialisms and create unrivalled opportunities both internally and externally.
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