Senior Backend Engineer - Fintech, Cloud & Distributed

Hanson Regan Ltd; Greater London; On-site; GBP 81,000 - 99,000; Full time

Job summary

Hanson Regan Ltd is recruiting a Backend Engineer for a UK fintech based in London. You will join an engineering function where backend systems are central to the product and must be fast, resilient and secure to support sophisticated workloads.

The role suits engineers who excel in modern cloud engineering rather than traditional app development, with experience in Python/Go, Kubernetes, GCP and PostgreSQL valued for distribution and scale.

Qualifications

• Backend development using Python, Go, TypeScript or similar.
• REST, GraphQL or gRPC APIs.
• Kubernetes and cloud platforms.
• PostgreSQL and strong SQL.
• Event-driven or asynchronous architectures.
• Queues, retries and distributed processing.
• System design and architectural decision-making.
• Automated testing.
• Monitoring and observability.
• Performance optimisation.
• Secure application development.
• CI/CD and modern deployment practices.

Responsibilities

• Building New services, APIs and Back End capabilities across Python, Go and TypeScript.
• Designing Working out how systems should interact, where data should live and how services should behave under load or failure.
• Scaling Making systems more performant and resilient as usage and complexity increase.
• Operating Getting involved in the real-world side of engineering - deployments, monitoring, incidents, observability and production performance.
• Evolving Improving existing architecture rather than accepting technical debt as inevitable.
• Experimenting Using AI and new engineering tools to find better and faster ways of solving problems.

Tools

Python

Go

TypeScript

Kubernetes

GCP

ArgoCD

GitHub Actions

PostgreSQL

BigQuery

Vector Databases

Blob Storage

REST

GraphQL

gRPC

Pub/Sub

Vertex AI

Prometheus

Grafana

Sentry

Job description

Hanson Regan Ltd is recruiting a Backend Engineer for a UK fintech based in London. You will join an engineering function where backend systems are central to the product and must be fast, resilient and secure to support sophisticated workloads.

The role suits engineers who excel in modern cloud engineering rather than traditional app development, with experience in Python/Go, Kubernetes, GCP and PostgreSQL valued for distribution and scale.