At a Glance
- Tasks: Build scalable platform services and shape architectural decisions in a dynamic environment.
- Company: Join ENSEK, a cloud-native SaaS company transforming the energy sector.
- Benefits: Enjoy 25 days holiday, health insurance, remote work, and a pension plan.
- Other info: Mentorship opportunities and a supportive, inclusive culture await you.
- 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 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 shaping the future of energy technology 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 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 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 all about continuous improvement.
✨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 team.
We think you need these skills to ace Senior Platform Engineer 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 mission at ENSEK!
Showcase Your Technical Skills:Don’t hold back on showcasing your expertise in cloud-native architecture, infrastructure-as-code, and any relevant tools like Terraform or GitOps. We love seeing candidates who can demonstrate their technical prowess!
Emphasise Your Soft Skills:Remember to highlight your growth mindset, resilience, and ability to foster a psychologically safe environment. These traits are just as important to us as your technical skills!
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 this exciting opportunity at ENSEK!
How to prepare for a job interview at ENSEK
✨Know Your Platform Engineering Fundamentals
Before the interview, brush up on your platform engineering fundamentals. Be ready to discuss your experience with infrastructure-as-code tools like Terraform and Crossplane, as well as cloud-native architectures. This will show that you understand the core responsibilities of the role and can contribute effectively.
✨Demonstrate a Growth Mindset
During the interview, highlight your ability to seek feedback and act on it. Share examples of how you've used constructive criticism to improve your work or help your team. This aligns perfectly with the company's emphasis on ownership and accountability.
✨Communicate Clearly and Simply
Practice explaining complex platform concepts in simple terms. Use examples from your past experiences to illustrate your points. This will demonstrate your ability to communicate effectively with both technical and non-technical stakeholders, which is crucial for the role.
✨Showcase Your Problem-Solving Skills
Be prepared to discuss specific challenges you've faced in previous roles and how you approached solving them. Focus on your thought process and the outcomes. This will resonate well with ENSEK's focus on solving real-world problems and driving innovation.
