Platform Engineer

About ENSEK

ENSEK builds the cloud‑native SaaS software that’s transforming how energy retailers operate, innovate and manage at scale.

We help retailers lower operating costs, improve billing accuracy for consumers, and enhance customer experience through automation and AI‑driven insight, all underpinned by modern, cloud‑native architecture.

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.

The Platform Engineer II delivers high‑quality, scalable, and well‑designed platform services and tooling within a cross‑functional team. Building on foundational experience, this role demonstrates increasing autonomy, contributes to platform design discussions, applies advanced infrastructure and engineering practices, and supports iterative, value‑led delivery. Operating within ENSEK’s engineering principles, the Platform Engineer II collaborates with product and engineering peers to improve developer experience and golden path adoption while continuously developing their technical and behavioural capabilities.

People & Conduct

• Demonstrate a consistent growth mindset, actively seeking feedback and applying it to improve performance.

• Take ownership of tasks and support peers in delivering high‑quality outcomes.

• Create an inclusive, respectful team environment that supports healthy debate.

• Show resilience by adapting well to setbacks and modelling constructive behaviour.

Product

• Use internal developer insight and platform context to inform decisions, asking clarifying questions when needed.

• Understand and articulate the value the platform delivers to internal engineering teams.

• Leverage platform metrics and developer feedback to guide decisions and challenge assumptions.

• Consider commercial impacts when proposing or evaluating platform solutions, balancing capability with infrastructure cost.

Delivery

• Break platform work down effectively into incremental, testable slices.

• Refine and estimate work with growing confidence and accuracy.

• Apply agile principles, promoting short feedback loops and reducing unnecessary complexity.

• Communicate clearly using concise, developer‑focused language; contribute to golden path documentation so teams can self-serve.

Engineering Practices

• Write readable, maintainable, and testable infrastructure-as-code and platform tooling following ENSEK standards (e.g. Terraform, Crossplane, Helm).

• Contribute idea‑driven input to platform design discussions and understand wider infrastructure and cloud-native system considerations.

• Apply test‑first thinking and write appropriate unit and integration tests for platform tooling and infrastructure changes.

• Participate in defining and improving platform testing strategies, including infrastructure validation.

• Contribute to observability, alerting, and production validation across platform services.

• Follow and advocate for secure coding and infrastructure practices, including least-privilege access and supply chain hygiene.

Engineering Community

• Share learning with peers, contribute to community knowledge‑sharing sessions, and help onboard engineers onto platform tooling.

• Participate actively in platform and engineering guilds, workshops, or improvement initiatives.

• Model ENSEK’s engineering values, champion platform adoption, and support capability uplift across teams.

• 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

• Regular team‑wide and company‑wide events

• 2 volunteering days per year to give back

• Remote‑first working environment with offices in London and Nottingham