Full job descriptionPrincipal Engineer – Scalable SaaS / Data Platforms
Location: UK remote (optional office presence - South West)


The Brief


We are supporting a fast-growing technology organisation in the search for a Principal Engineer to help scale a complex, globally deployed SaaS platform.


This is a senior individual contributor role with strong technical leadership expectations - ideal for someone who enjoys solving complex engineering challenges at scale while influencing architecture and engineering direction.


The Opportunity


You will take ownership of critical areas of a large-scale platform, helping to evolve architecture, improve performance, and support rapid international growth.


Working closely with engineering leadership and cross-functional teams, you will:


*Lead design and architectural decisions across key product areas
*Build and scale distributed systems handling high-volume data workloads
*Support the evolution of a SaaS platform serving global enterprise customers
*Influence engineering standards, tooling, and best practice across teams
*Partner with product and technical stakeholders to shape roadmap direction
*Drive improvements across scalability, resilience, and performance


A key focus will be scaling platform capability - supporting increased data volumes, users, and integrations while maintaining reliability and speed.


The Candidate


We are looking for an experienced engineer with deep technical expertise and a track record of operating at scale:


*Strong background in software engineering and system design
*Experience building and scaling distributed, data-intensive platforms
*Proven ability to design robust, scalable SaaS architectures
*Deep understanding of modern engineering principles and best practices
*Experience working in cloud-native environments
*Ability to navigate complexity and bring clarity to ambiguous technical challenges
*Strong communication skills, with the ability to influence technical and non-technical stakeholders
*Experience mentoring engineers and contributing to technical leadership


Technical Environment


Experience with modern architectures and tooling is expected, with exposure to technologies such as:


*Cloud platforms and containerisation (e.g. Kubernetes)
*Event-driven and microservices architectures
*Large-scale data processing and search technologies
*Modern backend development languages and frameworks


Why Apply?


*Work on genuinely complex, high-impact engineering challenges
*Join a fast-scaling, product-led technology business
*Influence architecture and engineering direction at scale
*Fully remote-first culture with flexibility
*Strong compensation and long-term growth opportunity