Principal Engineer

At Pluxee, we shape the world of employee benefits and engagement by bringing to life a personalized and sustainable employee experience, at work and beyond.

Permanent Regular

Job Description:

The Principal Engineer is the senior individual contributor responsible for technical leadership, solution architecture and engineering excellence across Pluxee UK’s .NET-based digital products and platforms. s a Principle Engineer you will expected to:
Own and influence end-to-end technical direction across product discovery, design, delivery and operation. It combines hands‑on engineering with architectural leadership, ensuring that solutions are secure, scalable, resilient, maintainable and aligned with measurable business outcomes. Support and enhance existing internally developed products while shaping new products and platform capabilities across Payments, Discounts, Benefits, Rewards, Salesforce, Business Central, Analytics, mobile applications and web portals.

Provide technical direction across squads, establishes engineering guardrails, manages technical debt and ensures adherence to internal governance, audit, security, privacy and accessibility requirements. A key objective is to align the UK technology landscape and product needs with global enterprise standards, strategies and reusable platform capabilities.

Deliver scalable, secure, resilient and cost‑effective end‑to‑end technical solutions that meet product, business, functional and non‑functional requirements. Provide visible technical leadership that improves engineering quality, delivery confidence, team capability and consistency across squads. Align product technology roadmaps with business strategy, Pluxee enterprise standards, security requirements and global platform direction. Ensure architecture decisions, system documentation and operational controls are current, traceable and suitable for governance and audit.

Technical leadership for products and platforms Own and evolve the end‑to‑end technical architecture for .NET digital products and shared platform capabilities. Act as the senior technical authority for product squads, resolving complex design decisions and providing clear, pragmatic technical direction. Remain hands‑on through prototypes, reference implementations, code reviews, troubleshooting and targeted delivery of high‑risk or high‑value components. Partner with Product Owners, Product Managers and Digital Asset Owners to translate product outcomes into coherent technical capabilities, features and user stories.

Identify technical risks, dependencies and constraints early, with proportionate mitigation and decision records Engineering excellence and software quality Establish and promote engineering standards covering clean architecture, SOLID principles, secure coding, automated testing, code quality and maintainability. Define guardrails for APIs, event‑driven integration, data access, error handling, logging, monitoring and operational readiness. Champion performance engineering, resilience testing, accessibility by design and production supportability.

Coach engineers and technical lead through design reviews, pairing, code reviews and communities of practice Lead root‑cause analysis for complex technical issues and ensure systemic improvements are captured in product backlogs. Architecture governance and documentation Maintain an accurate architecture repository and system inventory covering applications, integrations, infrastructure, data flows, technology standards and lifecycle status. Produce and maintain solution context, container, component, deployment, sequence, integration and data‑flow views at an appropriate level of detail.

Document significant decisions using…