Principal Software Engineer

Principal Software Engineer

We’re supporting a high-growth technology company entering a significant expansion phase. Product adoption is increasing, customer demand is growing, and the engineering function is scaling to support long-term platform evolution.

As part of this growth, they’re hiring a Principal Software Engineer to play a key role in shaping and scaling a complex, distributed platform.

This is a hands-on technical leadership role for someone who thrives on solving deep engineering challenges and designing systems built for performance, reliability, and long-term maintainability.

The Opportunity

You will work at the core of a production-scale platform, helping to guide technical direction while remaining deeply involved in implementation.

Key responsibilities include:

• Designing and scaling distributed backend systems
• Leading high-impact technical initiatives across core services and data layers
• Improving performance, reliability, and extensibility of existing systems
• Driving engineering best practices and architectural standards
• Contributing to design discussions, RFCs, and code reviews
• Mentoring senior engineers and raising the technical bar across teams
• Identifying and addressing scalability risks before they become blockers
• Contributing to modern, AI-enabled engineering workflows

This is not a purely strategic role — you will remain hands-on in the codebase.

What We’re Looking For

• 8+ years of backend or platform engineering experience
• Strong expertise in Python within large-scale production systems
• Experience designing and operating distributed systems
• Deep understanding of APIs, data modelling, and system scalability
• Experience working on platforms, developer tools, or infrastructure-oriented systems
• A pragmatic approach to balancing technical excellence with delivery
• Strong communication skills and ability to influence technical direction
• Experience working effectively in a remote-first environment

Nice to Have

• Experience with Rust or Go
• Exposure to graph databases or complex data systems
• Experience within infrastructure, automation, or developer tooling environments
• Contributions to open-source projects

Interested?!? Send your up to date CV to Chris Butler at CRG Recruitment for review`