At a Glance
- Tasks: Design and deliver scalable platform services while enhancing developer experience.
- Company: Join ENSEK, a cloud-native SaaS leader transforming the energy sector.
- Benefits: Enjoy 25 days holiday, health insurance, and a remote-first work culture.
- Other info: Be part of a dynamic team with excellent growth opportunities.
- Why this job: Make a real impact on global energy transition with cutting-edge technology.
- Qualifications: Experience in platform engineering and strong coding skills required.
The predicted salary is between 60000 - 80000 £ per year.
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.
About The Role
The Platform Engineer III is an experienced engineer who delivers high‑quality, scalable platform services while contributing significantly to infrastructure design, developer experience thinking, and delivery practices. 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. The Platform Engineer III applies advanced capability across Product, Delivery, and Engineering, helping uplift peers and contributing to ENSEK’s platform‑first engineering culture.
Key responsibilities
- People & Conduct: 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. Show resilience and adaptability in dynamic and challenging situations.
- Product: Understand internal developer needs and platform strategy, using insights to drive technical decisions. Use platform metrics and developer feedback to inform conversations, challenge assumptions, and propose improvements. Evaluate platform approaches with commercial awareness, identifying cost‑efficient infrastructure options. 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. Promote agile ways of working and challenge behaviours that hinder flow and predictability. Communicate clearly, simplify complex platform concepts, and produce golden path documentation so teams can self‑serve.
- Engineering Practices: Write high‑quality, maintainable infrastructure‑as‑code and platform tooling aligned to ENSEK standards (e.g. Terraform, Crossplane, Helm). Contribute to platform architectural discussions; propose cloud‑native design options with strong reasoning, including EKS, GitOps, and self‑service patterns. Apply test‑first approaches and contribute to robust testing strategies for platform tooling and infrastructure changes. 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.
- Engineering Community: Share platform knowledge widely, contribute to guilds, and elevate engineering and infrastructure standards. Mentor junior engineers, support skill development across the team, and help onboard engineering teams onto platform capabilities and golden path tooling. Participate in platform and community improvement initiatives, champion golden path adoption, and uphold ENSEK engineering values.
Experience required
Key Skills
- Product Skills: Developer Focus: Applies internal engineering team insight to shape platform delivery and technical decisions. Insight Driven: Uses platform metrics and developer feedback to challenge assumptions and propose alternatives. Commercial Awareness: Understands infrastructure cost implications and identifies value‑optimising platform solutions.
- Delivery Skills: Agility: Breaks down complexity; supports effective refinement and estimation. Simplicity: Communicates clearly; identifies opportunities to simplify processes and solutions.
- Engineering 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. Operations: Builds production‑ready software and continuously improves operational practices. Security & Compliance: Follows and promotes secure development standards.
- Soft Skills: Growth Mindset, Ownership, Psychological Safety, Challenge & Support, Resilience.
Company Benefits
- 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
Senior Platform Engineer employer: ENSEK
At ENSEK, we pride ourselves on being an exceptional employer that fosters a culture of innovation and collaboration. Our remote-first working environment, combined with generous benefits such as 25 days of holiday, comprehensive health insurance, and opportunities for professional growth, ensures that our employees thrive both personally and professionally. Join us in shaping the future of energy retail while enjoying a supportive atmosphere that values your contributions and encourages continuous learning.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Platform Engineer
✨Tip Number 1
Network like a pro! Reach out to current or former employees at ENSEK on LinkedIn. A friendly chat can give you insider info and maybe even a referral, which can really boost your chances.
✨Tip Number 2
Prepare for the interview by diving deep into ENSEK's platform and products. Understand their tech stack and be ready to discuss how your skills can help them innovate and solve real-world problems.
✨Tip Number 3
Show off your growth mindset! During interviews, share examples of how you've sought feedback and improved your work. This aligns perfectly with ENSEK's values and shows you're a team player.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining the ENSEK team.
We think you need these skills to ace Senior Platform Engineer
Some tips for your application 🫡
Tailor Your CV:Make sure your CV reflects the skills and experiences that align with the Senior Platform Engineer role. Highlight your experience with cloud-native architecture, infrastructure-as-code, and any relevant projects you've worked on.
Craft a Compelling Cover Letter:Use your cover letter to tell us why you're passionate about platform engineering and how you can contribute to ENSEK's mission. Share specific examples of how you've solved complex problems in previous roles.
Showcase Your Technical Skills:Don’t forget to mention your proficiency in tools like Terraform, Crossplane, and GitHub Actions. We want to see how you’ve applied these in real-world scenarios, so be specific!
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it’s super easy!
How to prepare for a job interview at ENSEK
✨Know Your Stuff
Make sure you brush up on your knowledge of cloud-native architectures and platform engineering principles. Be ready to discuss specific technologies like Terraform, EKS, and GitOps, as well as how you've applied them in past projects.
✨Show Your Problem-Solving Skills
Prepare to share examples of complex problems you've solved in previous roles. ENSEK values candidates who can break down large initiatives into manageable parts, so think about how you've done this before and be ready to explain your thought process.
✨Emphasise Collaboration
Highlight your experience working in teams and how you've contributed to a positive team culture. Discuss how you’ve supported peers and fostered an inclusive environment, as this aligns with ENSEK's focus on psychological safety and collaboration.
✨Ask Insightful Questions
Prepare thoughtful questions that show your understanding of ENSEK’s platform strategy and developer needs. This not only demonstrates your interest but also gives you a chance to assess if the company is the right fit for you.
