Catalyst

Catalyst

Gateshead, Northern Ireland

Senior Backend Engineer

Full-Time£65,000 - 80,000 per yearhierUnited Kingdom
IT

Job Description

Salary: £65,000 - 80,000 per year

Requirements:
  • Strong technical, commercial experience as a Backend Engineer, Senior Backend Engineer or Lead Backend Engineer, ideally in a fast-paced, growing technology-driven business
  • Experience in an agile, product-led environment is desirable
  • Production-grade experience in Go, having designed and shipped backend services at scale
  • Experience with TypeScript in a backend context (Node.js, shared libraries, or tooling)
  • Deep familiarity with core AWS infrastructure (Lambda, ECS/EKS, RDS/Aurora) - specialised knowledge in Aurora performance tuning is a significant plus
  • Proficiency with AWS messaging services, specifically SQS, SNS and EventBridge
  • Strong communication skills across technical and non-technical audiences
Responsibilities:
  • Own technical direction for the backend platform — architecture, coding standards, and how services are designed and evolved
  • Build and evolve production-grade services in Go and TypeScript across AWS Lambda, ECS/EKS, and RDS/Aurora
  • Make architectural decisions with clear reasoning, balancing delivery pace with long-term maintainability
  • Drive quality through code review, testing culture, and engineering practices
  • Mentor and coach backend engineers — helping them grow their skills and careers
  • Collaborate with Engineering Managers, Product and other platform Leads to align on shared standards
  • Manage technical debt strategically and champion continuous improvement
Technologies:
  • AWS
  • Lambda
  • Backend
  • TypeScript
  • NodeJS
  • Cloud
  • CTO
  • DevOps

More:

We are a successful tech scale-up, a cash-generative SME currently at approximately £10 million turnover with around 80 staff, looking to double in size in the next five years under the guidance of our experienced and driven owner, supported by a first-class senior leadership team. We are looking to strengthen our Engineering capability by appointing a new Senior Backend Engineer based at our North East headquarters. In this full-time, permanent role, you will enjoy a basic salary between £65,000 and £80,000 plus benefits, hybrid and flexible working options, and access to free parking, on-site health facilities, staff events, and training opportunities.

last updated 31 week of 2026

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About Catalyst

Catalyst

Catalyst

Gateshead

IT

Skills & Technologies

TypeScriptGoNode.jsAWSAIAgileDevOpsUI

Inferred from job description

Salary Insight

£72,500

This role

£75,000

UK median

This salary is 3% below the UK median for Senior roles75,000/yr).

Based on 2024–2025 UK technology sector benchmarks

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