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- Tasks: Design and develop software solutions for nuclear project commissioning.
- Company: Join Assystem, a leading independent nuclear engineering company.
- Benefits: Enjoy hybrid working, flexible hours, and competitive pay.
- Other info: Be part of a diverse team driving innovation in engineering.
- Why this job: Make a real impact on the future of energy while developing your skills.
- Qualifications: Experience in web development with Python and JavaScript is essential.
The predicted salary is between 40000 - 50000 £ per year.
At Assystem, our mission is to accelerate the energy transition worldwide. Our 8,000 Switchers blend historical engineering expertise with cutting-edge digital technologies to drive this change. Join us in revolutionizing the energy sector and making a significant global impact.
We are seeking a skilled Software Developer to play a key role in supporting Instrumentation & Control (I&C) system commissioning across a major nuclear project. This role focuses on designing, developing, testing, and supporting software solutions that enable safe, efficient, and compliant commissioning activities on one of the UK’s most significant infrastructure projects.
You will develop robust, scalable applications using technologies such as Python, JavaScript, and PostgreSQL, contributing across the full software development lifecycle - from requirements capture and technical design through to implementation, testing, deployment, and ongoing optimisation.
We are looking for someone who is comfortable working across both server-side and client-side technologies, has a strong understanding of modern web architectures, and takes pride in delivering clean, maintainable, and high-quality code. A proactive approach to troubleshooting, performance optimisation, and continuous improvement is essential, along with a desire to stay current with emerging technologies and best practices.
This is a hands-on role within a fast-paced commissioning environment, requiring strong attention to detail, adaptability, and effective collaboration with multidisciplinary teams. Your work will directly support the safe startup and long-term performance of critical nuclear systems.
Roles & Responsibilities:
- Design technical solutions to support I&C commissioning engineers, simplifying the use and interpretation of I&C data.
- Improve and maintain web-based applications.
- Implement backend logic, data processing workflows, and automation solutions using Python.
- Build responsive, user-friendly frontend components and interactive features using JavaScript.
- Design, manage, and optimise relational databases in PostgreSQL.
- Write performant SQL queries, stored procedures, and data migration scripts.
- Ensure data integrity and security across environments.
- Ensure software quality by testing and writing documentation.
- Conduct unit testing, integration testing, and assist in user acceptance testing.
- Write technical specifications and installation procedures.
- Assist in writing user manuals.
- Debug, troubleshoot, and resolve software defects across the stack.
- Deploy and maintain these tools.
- Collaborate with cybersecurity team, ensuring high standards of security, performance, and scalability across all developed solutions.
- Contribute to the continuous improvement of development practices and code quality standards.
Qualifications
Essential:
- Proven experience developing web applications.
- Strong proficiency in Python and at least one major Python framework (FastAPI, Flask, Django).
- Strong knowledge of JavaScript and common front-end libraries (ideally Angular).
- Solid understanding of SQL database: modelling, query optimisation, and performance tuning.
- The ability to innovate, think laterally and implement processes.
- Fluent in spoken and written English.
Desirable:
- Degree in software development.
- Experience with containerisation technologies such as Docker.
- Familiarity with cloud platforms (AWS, Azure, GCP) or on-premises hosting environments.
Join us at Assystem and be part of a global team delivering some of the most exciting and complex engineering projects in the world. This is your chance to shape the UK’s energy future while developing your expertise in a unique environment.
Benefits include:
- Hybrid Working Opportunity
- Flexible working hours
- Pension scheme (8% company contribution / 4% personal contribution)
- 25 days’ paid annual leave + bank holidays + option to buy or sell days
- Professional fees reimbursed
- Employee referral scheme
- Competitive Sick Pay – Support when you need it
- Income Protection & 3x Salary Death-in-Service Cover
- Free Digital Gym Access – Expert-led fitness classes
- 24/7 Employee Support Line – Mental health, financial & legal help
We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter!
Bring your unique contributions and help us shape the future.
Software Developer - Commissioning Team employer: Assystem, Switch On
Contact Detail:
Assystem, Switch On Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Software Developer - Commissioning Team
✨Tip Number 1
Get your networking game on! Connect with folks in the industry, attend meetups, and join online forums. You never know who might have a lead on that perfect Software Developer role at Assystem.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially those using Python, JavaScript, and PostgreSQL. This will give potential employers a taste of what you can do and how you tackle real-world problems.
✨Tip Number 3
Prepare for interviews like a pro! Research Assystem’s projects and values, and be ready to discuss how your experience aligns with their mission to revolutionise the energy sector. Practice common coding challenges too!
✨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 Assystem community.
We think you need these skills to ace Software Developer - Commissioning Team
Some tips for your application 🫡
Tailor Your CV: Make sure your CV is tailored to the Software Developer role. Highlight your experience with Python, JavaScript, and PostgreSQL, and showcase any relevant projects that demonstrate your skills in web application development.
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about the energy sector and how your skills align with our mission at Assystem. Keep it concise but impactful!
Showcase Your Problem-Solving Skills: In your application, don’t forget to mention specific examples where you've tackled challenges or optimised processes. We love seeing how you approach troubleshooting and continuous improvement!
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 shows you’re keen on joining our community of Switchers!
How to prepare for a job interview at Assystem, Switch On
✨Know Your Tech Stack
Make sure you’re well-versed in Python, JavaScript, and PostgreSQL. Brush up on the frameworks like FastAPI or Flask for Python and any front-end libraries you might use. Being able to discuss your experience with these technologies confidently will show that you're ready to hit the ground running.
✨Showcase Your Problem-Solving Skills
Prepare examples of how you've tackled challenges in previous projects. Whether it’s debugging a tricky issue or optimising a slow query, having specific stories ready will demonstrate your proactive approach and ability to innovate under pressure.
✨Understand the Company’s Mission
Familiarise yourself with Assystem's commitment to the energy transition and their role in nuclear engineering. Showing that you align with their mission and values can set you apart from other candidates and highlight your genuine interest in the position.
✨Ask Insightful Questions
Prepare thoughtful questions about the team dynamics, project timelines, or the technologies they use. This not only shows your enthusiasm but also helps you gauge if the company culture and work environment are a good fit for you.