Principal Engineer (City of London)

Principal Engineer

London Hybrid

£95,000-£110,000 + bonus + benefits

We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting users with seamless, intelligent technology solutions.

We are looking for Principal Engineer's with deep expertise in Kotlin or JVM to help scale and enhance their high performance systems. This is an opportunity to work with modern backend architecture, collaborating with top-tier engineers in a fast-moving, product-focused environment.

Responsibilities as a Principal Engineer:

• Contribute to the businesses technology strategy and architecture
• Contribute to the backend Kotlin infrastructure
• Ship resilient and well tested production code
• Collaborate with different teams to deliver value that aligns to business objectives
• Mentor and coach more junior members of the team
• Continuously evolve and improve the ways of working in the business

Key Requirements:

• Strong commercial experience in the JVM ecosystem for backend development
• Confidence to work with Spring Boot or Ktor to build robust microservices
• Strong ability to write secure, resilient, and well-tested code
• Desire for building API-first products
• Deep understanding of software design patterns, SOLID principles, and test-driven development
• Experience with Agile methodologies, including peer reviews & pair programming.
• Ability to translate business needs into scalable technical solutions

Benefits:

• Competitive salary and bonus
• Hybrid office / remote-working practices
• Private Health Insurance
• Pension Scheme
• Life Assurance Scheme with death in service benefit of 4x salary

This is a career defining Principal Engineer position with the potential to have a massive impact on the technology strategy of a business that is directly shaping the future of intelligent digital infrastructure.