Commissioning Engineer (Software Developer)

In addition to the benefits you’d expect, UK employees also receive free single medical cover and digital GP service, family‑friendly benefits such as enhanced parental leave pay and free membership of employee assistance and parental programmes, plus reimbursement towards relevant professional development and memberships.

About the Opportunity

Have you had Commissioning Engineer experience? Energy Power Programmes are delivering client critical works to some of our major UK and European Projects. Our embedded teams are delivering support to Hinkley Point C (New build power station in the South West), Sizewell C (located in the South East), helping develop technologies in SMR (Small modular Reactor) capability and working towards building Poland's first Energy Power station. Working in both client facing and internal roles we are delivering major programme and project management capabilities throughout the project lifecycle. We are driving to deliver safe, high quality and to time solutions by thinking innovatively and working collaboratively.

The primary purpose of this role is to develop, configure, test, and troubleshoot software that supports I&C system commissioning activities across HPC’s reactor units. This includes developing robust, scalable software solutions using Python, JavaScript, and PostgreSQL. The Software Developer contributes throughout the development lifecycle—from requirement gathering and technical design to implementation, testing, deployment, and ongoing optimisation.

Key responsibilities will be:

• 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 (with Angular JS Framework).
• 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 and assist in writing user manuals.
• Debug, troubleshoot, and resolve software defects across the stack.
• Deploy and maintain these tools and 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.

Knowledge, Skills, Qualifications & Experience

• 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.
• Decision making ability for resolution of issues.
• Proactive, adaptable, and eager to learn new technologies.
• The ability to innovate, think laterally and implement processes.

Desirable

• Degree in software development.
• Experience with containerisation technologies such as Docker.
• Familiarity with cloud platforms (AWS, Azure, GCP) or on‑premises hosting environments.

As a Disability Confident employer, we will interview all disabled applicants who meet the minimum criteria for a vacancy. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role.