Principal Engineer

Principal Software Engineer

Location:

London - Hybrid 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  Responsibilities:

Set the technical direction for a large-scale API platform across both synchronous and event-driven services

Lead architectural design across a modern, cloud-native stack

Drive continuous improvement across security, observability, performance, and long-term maintainability

Mentor and develop engineers and technical leads across multiple teams

Work closely with Product and Delivery leadership to keep engineering strategy aligned with broader business goals

Champion strong engineering fundamentals — testing, CI/CD, infrastructure as code, and clean architecture

Identify practical ways to bring emerging technologies, including AI tooling, into everyday engineering workflows~

Key Requirements:

A strong track record delivering large-scale distributed systems in cloud environments

Deep knowledge of API design - REST and GraphQL, and substantial hands-on experience with Kafka in a production environment

Solid cloud platform experience, particularly AWS, and comfort with containerised infrastructure

Proficiency in Type Script across a modern backend stack

Experience leading and influencing across multiple engineering teams, not just within a single squadA genuine care for code quality, sustainable architecture, and long-term thinking over short-term deliveryA collaborative, mentoring leadership style that brings the best out of the people around youAn interest in how AI is changing the way engineering teams work Enterprise CRM experience would be an advantage

What's on

Offer:

Salary Up to 110,000 plus bonus

Genuinely flexible hybrid working arrangements

Generous parental leave and family-friendly policies

Strong support for career development and progression

This is the right role for a Principal Engineer who is ready to move beyond squad-level impact and take on something bigger - shaping the architecture, the team, and the direction of a platform that matters at real scale.

Unfortunately, due to the high volume of applications, not everyone will be able to receive detailed feedback..