Senior Backend Engineer

Orbis Group; Remote; GBP 100,000 - 125,000; Full time

Job summary

A leading tech-first fintech company is looking for a Backend Developer with expertise in Golang, Python, or Java. This remote position involves building and maintaining backend systems that power millions of users. You will work on distributed systems and contribute to CI/CD pipelines while collaborating with cross-functional teams to enhance user experiences. The role includes deploying on Kubernetes and using AWS services. Ideal for candidates who enjoy a scalable, product-focused environment.

Qualifications

• Solid experience in backend development using Golang, Python, or Java.
• Experience working with scalable systems and high-throughput APIs.
• Familiarity with cloud-native architectures and container orchestration.

Responsibilities

• Build and maintain backend services and APIs in a Golang-first environment.
• Work on distributed systems, microservices, and event-driven pipelines.
• Deploy services on Kubernetes and Docker, leveraging AWS infrastructure.

Skills

Golang

Python

Java

Microservices

Cloud services (AWS/GCP)

Agile methodologies

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