Principal Software Engineer

Formula. • london, england, United-Kingdom • Posted May 31, 2026

Location london, england
Job Type Full-time
Category IT & Technology
Posted May 31, 2026

Salary: Up to £110,000 + Bonus & Benefits

We're looking for a Principal Software Engineer to join a global technology business whose platforms underpin consumer experiences used by millions of people every day. This is an established, scaled business with a genuinely global reach and this role sits at the heart of their core engineering capability.

This isn't a purely strategic seat. You'll have genuine technical authority over a business-critical API platform while staying close to the engineering, partnering with skilled squads to solve complex distributed systems challenges at scale.

Key Responsibilities

  • Set the technical direction for a large-scale API platform across both synchronous and event-driven services
  • Drive continuous improvement across security, observability, performance, and long-term maintainability
  • Mentor and develop engineers and technical leads across multiple teams
  • Work closely with...

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