Senior Backend Engineer

Orbis Group; Remote; GBP 80,000 - 100,000; Full time

Job summary

A leading tech-first fintech company is seeking a Backend Developer with expertise in Golang, Python, or Java to build scalable backend systems that support millions of users. You will work in a Golang-first environment, handle distributed systems, and deploy solutions on AWS. Emphasis on collaboration, CI/CD, and continuous improvement in user experience is paramount. This is a fully remote position based in the UK with rolling contracts over six months.

Qualifications

• Solid backend experience in Golang, Python, or Java.
• Experience with scalable systems, microservices, and high-throughput APIs.
• Familiarity with cloud-native technologies.

Responsibilities

• Build and maintain backend services and APIs.
• Work on distributed systems and event-driven pipelines.
• Deploy and operate services on AWS infrastructure.

Skills

Golang

Python

Java

Microservices

AWS

Event-driven architecture

CI/CD

Tools

Kubernetes

Docker

Grafana

Prometheus

Job description

Backend Developer – Golang / Python / Java / Tech-First Fintech – Inside IR35

Our client is a leading, tech‑first fintech building backend systems that power millions of users every day. They are looking for a Backend Developer with experience in Golang, Python, or Java who can contribute to scalable, high‑performance systems and help deliver impactful products.

Key Responsibilities:

• Build and maintain backend services and APIs in a Golang‑first environment, with Python or Java experience welcome.
• Work on distributed systems, microservices, and event‑driven pipelines handling millions of requests with low latency.
• Deploy and operate services on Kubernetes and Docker, leveraging AWS infrastructure such as EC2, S3, Lambda, and RDS.
• Implement monitoring and observability using tools like Grafana and Prometheus to track system performance.
• Collaborate with product, frontend, and analytics teams to deliver features that make a tangible impact on user experience.
• Contribute to CI/CD pipelines, automated testing, and maintainable code practices.

Key Skills:

• Golang / Python / Java: solid backend experience, happy to work in a Golang‑first environment.
• Scalable systems: experience with microservices, event‑driven architecture, and high‑throughput APIs.
• Cloud‑native: AWS or GCP experience, containerisation, orchestration, and horizontal scaling.
• Product‑focused mindset: enjoys building systems that directly improve user experience and business outcomes.
• Collaboration: Agile, TDD, CI/CD, and comfortable working closely across teams.

Rate: DoE, Inside IR35

Location: Fully remote, UK‑based

Duration: 6‑month rolling contracts within a multi‑year engagement