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: Mentorship opportunities and a supportive, inclusive environment await you.
- Why this job: Be part of a team driving innovation in the global energy transition.
- 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 — Cloud-Native, Self‑Serve Infra 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 transforming the energy sector 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 — Cloud-Native, Self‑Serve Infra
✨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 cloud-native architecture and think about how your skills can contribute to their mission. Show them you’re not just another candidate!
✨Tip Number 3
Practice your problem-solving skills! Be ready to tackle real-world scenarios they might throw at you during the interview. Use examples from your past experiences to demonstrate how you’ve solved complex issues.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, it shows you’re genuinely interested in joining the ENSEK team.
We think you need these skills to ace Senior Platform Engineer — Cloud-Native, Self‑Serve Infra
Some tips for your application 🫡
Tailor Your CV:Make sure your CV speaks directly to the role of Senior Platform Engineer. Highlight your experience with cloud-native architecture and any relevant tools like Terraform or EKS. We want to see how your skills align with our needs!
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to explain why you're passionate about transforming energy retail through technology. Share specific examples of how you've solved complex problems in previous roles, just like we do at ENSEK.
Showcase Your Growth Mindset:We love candidates who are open to feedback and eager to learn. In your application, mention times when you've sought feedback and how it helped you improve. This aligns perfectly with our culture of continuous growth and support.
Apply Through Our Website:Don't forget to apply through our website! It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows you’re serious about joining our team at ENSEK!
How to prepare for a job interview at ENSEK
✨Know Your Cloud-Native Stuff
Make sure you brush up on cloud-native architecture, especially EKS and self-service patterns. Be ready to discuss how you've applied these concepts in your previous roles, as this will show your understanding of the technical landscape ENSEK operates in.
✨Showcase Your Problem-Solving Skills
Prepare examples of complex problems you've solved in past projects. Highlight your thought process and the impact of your solutions, especially in terms of improving developer experience or operational efficiency. This aligns perfectly with ENSEK's focus on real-world problem-solving.
✨Emphasise Collaboration and Mentorship
Since the role involves supporting peers and mentoring junior engineers, be ready to share experiences where you've fostered a collaborative environment. Discuss how you've contributed to team growth and knowledge sharing, which is key to ENSEK's engineering culture.
✨Be Agile and Adaptable
Demonstrate your understanding of agile methodologies and how you've applied them in your work. Talk about how you break down large initiatives into manageable tasks and how you handle changing requirements. This will resonate well with ENSEK's delivery practices.
