Principal Software Engineer

Principal Software Engineer – Cloud Platform / Greenfield Build

Location – London (office-led)

Salary – £115,000 - £120,000 + bonus/benefits

High Ownership, Modern Stack, Hands-on Leadership

We’re looking for a Principal Software Engineer to help shape the future of a large-scale, globally distributed platform used by millions of customers across travel, financial services, and retail.

This is a hands-on leadership role where you’ll influence the architecture, scalability, and future direction of a truly global technology ecosystem.

What you’ll be doing

Defining the technical vision for a central API platform
Designing and building scalable, cloud-native systems
Leading event-driven architectures (Kafka)
Driving best practice across performance, security, and observability
Mentoring engineers and influencing technical direction across multiple teams
Collaborating with Product and Delivery to shape long-term strategy
Embedding modern engineering practices (CI/CD, IaC, TDD)
Exploring and applying AI-driven engineering capabilities

Tech environment

TypeScript (Node.js)
AWS (EKS, Lambda, RDS)
Kubernetes
Kafka (event-driven systems)
GraphQL & REST APIs
Terraform & Helm
GitHub Actions
DataDog

What we’re looking for

Proven experience designing large-scale distributed systems in the cloud
Deep understanding of API-led and event-driven architecture
Strong AWS and modern DevOps experience
Track record of influencing technical direction across teams
Still hands-on with coding and design
Passion for clean architecture and engineering quality

Why it’s Worth a look

Opportunity to own and evolve a core platform used globally
Work on genuinely complex distributed systems challenges
Strong engineering culture with a focus on innovation and modern practices
Flexible/hybrid working + additional remote working benefits

Please apply directly for immediate consideration

Apply Now

Principal Software Engineer

Job Details