At a Glance
- Tasks: Design and build scalable software to transform the energy retail sector.
- Company: Join ENSEK, a cloud-native SaaS company revolutionising energy management.
- Benefits: Enjoy 25 days holiday, health insurance, and remote-first work culture.
- Other info: Dynamic team environment with opportunities for mentorship and career growth.
- Why this job: Make a real impact on global energy transition with innovative technology.
- Qualifications: Experience in cloud-native software and strong full-stack engineering 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
As a Senior Software Engineer, this is a great opportunity to join at a pivotal moment; helping modernise architecture, influence engineering culture, and build products that will support customers across the UK, Europe, North America and beyond. You'll design, build and evolve scalable software while helping shape how we work, how we architect systems, and how we deliver value to our customers.
Key responsibilities:
- Build products, not just features: Partner closely with Product and Design to understand problems and shape solutions.
- Driving platform modernisation and transformation: Design and build modular, API-first solutions and support strong domain boundaries and engineering standards.
- Driving full-stack ownership: Taking solutions from design and build through to testing and deployment.
- Drive engineering excellence: Championing modern development practices including automated testing, peer review and continuous delivery.
- Raise the bar around you: Mentor and support other engineers and contribute to engineering communities, guilds and knowledge-sharing initiatives.
Success in this role isn't measured by the number of tickets delivered. You will solve complex customer problems, build scalable products, and own meaningful outcomes that shape the future of our platform.
Experience required:
We're looking for engineers who combine strong technical capability with a product mindset. We would love to hear from you if you have:
- Experience building and operating modern, cloud-native software products within a product-led SaaS environment, with strong full-stack engineering fundamentals and a focus on clean, maintainable code.
- Proven ability to design and deliver scalable, resilient solutions using technologies such as C#, .NET, Azure, APIs, distributed systems, and SQL Server.
- Comfortable contributing to architecture, technical strategy, and engineering best practices, with experience in microservices, event-driven systems, Domain Driven Design (DDD), and cloud-native patterns.
- A product mindset that goes beyond technical requirements to understand customer problems, deliver meaningful outcomes, and drive business impact.
- Strong collaboration and communication skills, with experience working in Agile, cross-functional product teams and helping to raise engineering standards across the organisation.
- Curious, adaptable, and growth-oriented, with a passion for continuous improvement, modern DevOps practices, CI/CD, observability, automation, and learning new technologies.
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 Software Engineer employer: ENSEK
At ENSEK, we pride ourselves on being an excellent employer by fostering a remote-first work culture that prioritises employee well-being and professional growth. Our commitment to security best practices is matched by our comprehensive benefits package, including health insurance and pension contributions, ensuring that our team members feel valued and supported in their roles. Join us to be part of a resilient team that encourages ownership and continuous improvement in the ever-evolving field of cybersecurity.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at ENSEK or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to ENSEK.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like ENSEK.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like ENSEK that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Software Engineer
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at ENSEK.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at ENSEK and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at ENSEK
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If ENSEK uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
