Staff Software Engineer

Company: Harness
Apply for the Staff Software Engineer
Location: Belfast
Job Description:

Overview

As part of Harness IACM, you will help design and build the platform that automates and governs infrastructure provisioning at scale. You’ll work on a highly distributed system, contribute to core components, and drive quality, performance, and architecture. You will mentor peers, perform code and design reviews, and collaborate with SREs and cross-functional teams to ensure reliable production delivery. This role offers a chance to shape infrastructure automation for world-class software teams and advance your career in a fast-moving, ambitious engineering environment. You will join a mission-driven team delivering secure, compliant infrastructure at speed.

Pay / Benefits

  • Competitive salary
  • Comprehensive healthcare benefits
  • Flexible Spending Account (FSA)
  • Employee Assistance Program (EAP)
  • Flexible Time Off and Parental Leave
  • Quarterly Harness TGIF-Off / 4 days

Responsibilities

  • Design, develop, and maintain scalable platform components
  • Author functional specs and design documents
  • Own critical system pieces and ensure delivered quality
  • Diagnose and troubleshoot complex distributed systems
  • Establish best practices for quality, performance, and architecture
  • Mentor engineers and provide technical leadership
  • Perform peer reviews of specs, designs, and code
  • Identify technical debt and scaling issues and drive improvements
  • Collaborate with SREs and cross-functional teams on production performance

Key requirements

  • 7+ years of experience building scalable distributed applications in Java and Golang
  • Design/development of REST, gRPC, and GraphQL APIs
  • Working knowledge of SQL and No-SQL databases
  • Strong CS fundamentals with analytical and debugging skills
  • Experience in SAAS platform development at scale
  • Entrepreneurial mindset and quality-focused execution
  • Experience with AWS/Azure/GCP is a plus
  • Bachelor in Computer Science
  • entrepreneurial mindset
  • strong collaboration
  • problem-solving
  • Java
  • Golang
  • REST

Posted: September 14th, 2026