Senior Platform Engineer

Salary: £39,000 - 79,000 per year

Requirements

• Experience delivering high-quality, scalable platform services with a strong foundation in platform engineering.
• Strong capability in infrastructure-as-code and platform tooling, including Terraform, Crossplane, and Helm.
• Experience contributing to platform architecture and cloud-native design, including EKS, GitOps, and self-service patterns.
• Ability to apply test-first approaches and contribute to testing strategies for platform tooling and infrastructure changes.
• Experience improving observability, alerting, and operational practices across platform services.
• Understanding of secure development and infrastructure practices, including least-privilege access and supply chain hygiene.
• Ability to use platform metrics and developer feedback to shape technical decisions.
• Commercial awareness with the ability to identify cost-efficient infrastructure options.
• Strong communication skills and the ability to simplify complex platform concepts.
• Ability to work autonomously while supporting peers, mentoring junior engineers, and contributing to a psychologically safe environment.

Responsibilities

• Deliver high-quality, scalable platform services while contributing to infrastructure design, developer experience thinking, and delivery practices.
• Shape architectural decisions and support engineering teams in achieving predictable, value-led delivery.
• Use platform metrics and developer feedback to inform technical decisions and propose improvements.
• 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.
• Promote agile ways of working and help improve flow and predictability.
• Write maintainable infrastructure-as-code and platform tooling aligned to ENSEK standards.
• Contribute to platform architectural discussions and propose cloud-native design options.
• Improve observability, alerting, and operational practices across platform services.
• Share platform knowledge, contribute to guilds, mentor junior engineers, and help onboard teams onto platform capabilities and golden path tooling.
• Produce golden path documentation so teams can self-serve.
• Champion golden path adoption and uphold ENSEK engineering values.

Technologies

• AI
• Cloud
• Flow
• GitOps
• Helm
• Support
• Terraform
• DevOps
• GitHub
• Security

More

We build cloud-native SaaS software that is 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. We are scaling rapidly toward new international horizons, and if you are driven by solving complex real-world problems and want to build technology that accelerates the global energy transition, you will feel at home with us. We offer 25 days holiday plus bank holidays, the option to buy or sell 5 extra annual leave days per year, Vitality Health Insurance with private healthcare, virtual GP access, mental-health support and wellbeing perks, a pension with 5% matched contribution, regular team-wide and company-wide events, 2 volunteering days per year, and a remote-first working environment with offices in London and Nottingham.

last updated 36 week of 2026