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, remote work, and a supportive team culture.
- Other info: Be part of a dynamic team with excellent growth opportunities and community initiatives.
- Why this job: Make a real impact on global energy transition with cutting-edge technology.
- Qualifications: Experience in platform engineering, coding, and agile methodologies 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 in London 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, health insurance, and opportunities for professional growth, ensures that our employees thrive both personally and professionally. Join us in Nottingham or London to be part of a team that is not only transforming the energy sector but also committed to your development and well-being.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Platform Engineer — Cloud-Native, Self‑Serve Infra in London
✨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! ENSEK loves candidates who can tackle real-world challenges. Try some coding challenges or system design problems to sharpen your thinking and be ready to impress.
✨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 being part of the ENSEK team.
We think you need these skills to ace Senior Platform Engineer — Cloud-Native, Self‑Serve Infra in London
Some tips for your application 🫡
Tailor Your Application:Make sure to customise your CV and cover letter to highlight how your skills and experiences align with the role of Senior Platform Engineer. We want to see how you can contribute to our cloud-native architecture and developer experience!
Showcase Your Technical Skills:Don’t hold back on showcasing your expertise in infrastructure-as-code, especially with tools like Terraform and Crossplane. We’re keen to see how you’ve applied these in real-world scenarios, so share specific examples!
Emphasise Your Growth Mindset:We love candidates who are open to feedback and eager to learn. Highlight instances where you've sought feedback or adapted your approach based on insights from peers. This shows us you're a great fit for our culture!
Apply Through Our Website:For the best chance of success, make sure to apply directly through our website. It’s the easiest way for us to keep track of your application and ensures you don’t miss out on any important updates!
How to prepare for a job interview at ENSEK
✨Understand the Company and Its Culture
Before your interview, take some time to research ENSEK and its mission. Familiarise yourself with their cloud-native SaaS solutions and how they impact energy retailers. This will help you align your answers with their values and demonstrate your genuine interest in contributing to their goals.
✨Showcase Your Technical Skills
As a Senior Platform Engineer, you'll need to highlight your experience with infrastructure-as-code tools like Terraform and Crossplane. Be prepared to discuss specific projects where you've applied these skills, and think about how you can articulate complex technical concepts in a simple way that resonates with the interviewers.
✨Demonstrate a Growth Mindset
During the interview, share examples of how you've sought feedback and used it to improve your work. ENSEK values a mature growth mindset, so showing that you're open to learning and adapting will resonate well with them. Think of situations where you've modelled ownership and accountability too!
✨Prepare for Scenario-Based Questions
Expect questions that assess your problem-solving abilities and how you handle dynamic situations. Prepare to discuss how you've broken down complex initiatives into manageable tasks or how you've contributed to agile delivery practices. Use the STAR method (Situation, Task, Action, Result) to structure your responses effectively.
