Full job descriptionPrincipal Engineer

Hybrid role in Newcastle upon Tyne
Up to 110k max.
The RoleWe are looking for an experienced and technically driven Principal Engineer to play a key role in shaping the future of a high-performance trading platform.
You will lead major platform re-architecture and modernisation initiatives, helping to design and deliver scalable, resilient and low-latency systems for real-time trading environments. Working closely with Product, Operations and Engineering teams, you will have significant influence over technical strategy and the future direction of the platform.
Key Responsibilities*Lead platform re-architecture and modernisation initiatives.
*Design scalable, resilient and high-performance distributed systems.
*Develop and evolve low-latency, event-driven architectures for real-time trading environments.
*Drive key architectural decisions while balancing scalability, technical debt, delivery and commercial priorities.
*Improve platform performance, automation, monitoring and deployment processes.
*Work closely with Product and Operations teams to translate business requirements into technical solutions.
*Provide technical leadership and help shape the wider engineering roadmap.
*Champion high standards around code quality, testing, observability, security and scalability.
*Mentor and support engineers through technical guidance, coaching and peer reviews.
*Lead continuous improvement initiatives and encourage the adoption of modern technologies and engineering practices.
*Support post-incident reviews and help embed learnings into future engineering processes.
What We’re Looking For*Strong experience designing and building scalable, distributed systems.
*Experience with real-time and low-latency platform architecture.
*Proven experience leading platform modernisation, migration or re-architecture projects.
*Strong understanding of event-driven systems, APIs, cloud-native technologies and CI/CD.
*Excellent knowledge of scalability, resilience, performance and operational best practices.
*Strong technical leadership skills with the ability to influence engineering and business stakeholders.
*Experience mentoring engineers and raising technical standards across teams.
*Excellent communication skills and the ability to explain complex technical concepts clearly.
Desirable Experience*Experience or a strong understanding of financial markets technology.
*Exposure to electronic trading, OTC markets, FX, fixed income or similar trading environments.
*Understanding of trading workflows, pricing, execution platforms and post-trade processes.
*Awareness of risk, compliance, security and auditability requirements within financial services.
What We Offer*Competitive salary
*25 days annual leave, plus bank holidays
*Discretionary performance bonus
*Flexible working
*Private Medical Insurance
*Life Insurance – 5x salary
*Pension scheme
*Employee Assistance Programme
*Salary Sacrifice Bike to Work Scheme
*Salary Sacrifice Electric Car Scheme