Senior Platform Engineer

Nottingham, United KingdomRemote

Responsibilities

Demonstrate a mature growth mindset, routinely seeking feedback and acting on it to drive improvement. •
Model ownership and accountability, supporting peers in developing the same behaviours. •
Facilitate constructive debate and foster an inclusive, psychologically safe environment. •
Evaluate platform approaches with commercial awareness, identifying cost‑efficient infrastructure options. •
Promote agile ways of working and challenge behaviours that hinder flow and predictability. •
Write high‑quality, maintainable infrastructure-as-code and platform tooling aligned to ENSEK standards (e.g. Terraform, Crossplane, Helm). •
Improve observability, alerting, and operational practices across platform services to ensure reliability for all engineering teams. •
Advocate secure coding and infrastructure practices, including least-privilege access and supply chain hygiene, ensuring compliance with ENSEK’s policy.
Mentor junior engineers, support skill development across the team, and help onboard engineering teams onto platform capabilities and golden path tooling. •

experience through automation and AI‑driven insight, all underpinned by modern, cloud‑native architecture.
Operating with a high level of autonomy, this role demonstrates strong platform engineering fundamentals, participates in shaping architectural decisions, and supports engineering teams in achieving predictable, value‑led delivery.
Contribute to platform architectural discussions; propose cloud-native design options with strong reasoning, including EKS, GitOps, and self-service patterns. •
Experience required: Key Skills Product Skills •
Code & IaC: Writes high‑quality, well‑structured code and infrastructure-as-code; provides meaningful feedback in reviews across Terraform, Crossplane, and GitHub Actions. •
Design: Contributes to platform system design, demonstrating understanding of cloud-native architecture, EKS cluster patterns, and self-service infrastructure. •

25 days’ holiday + bank holidays •
Option to buy or sell 5 extra annual leave days per year •
Vitality Health Insurance, including private healthcare, virtual GP access, mental‑health support and wellbeing perks (50% off gym memberships -Virgin Active, Nuffield, PureGym) •
Pension with 5% matched contribution •

We help retailers lower operating costs, improve billing accuracy for consumers, and enhance customer
ENSEK is at an exciting inflection point as we scale at pace towards new international horizons.
If you’re driven by solving complex, real‑world problems and want to build modern technology that accelerates the global energy transition, you’ll feel right at home with us. About the role
The Platform Engineer III applies advanced capability across Product, Delivery, and Engineering, helping uplift peers and contributing to ENSEK’s platform-first engineering culture.
Show resilience and adaptability in dynamic and challenging situations Product •
Use platform metrics and developer feedback to inform conversations, challenge assumptions, and propose improvements. •
Clearly articulate platform value and enable engineering teams to understand and adopt it. Delivery •
Break down large platform initiatives into incremental, testable slices that unlock early learning and value. •
Contribute to accurate estimation and planning, highlighting risks and dependencies. •
Communicate clearly, simplify complex platform concepts, and produce golden path documentation so teams can self-serve.