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# Software Developer - Commissioning Team

- **Company:** Assystem UK Ltd
- **Location:** Bridgwater, UK
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, JavaScript (Programming Language), Amazon Web Services, Unit Testing, Microsoft Azure, Software Quality, Data Integrity, Data Migration, Relational Databases, Django Web Framework, Python (Programming Language), PostgreSQL, Performance Tuning, Query Optimization, Software Engineering, SQL Stored Procedures, SQL Databases, Google Cloud, Flask (Web Framework), Backend, Fastapi, AngularJS, Integration Tests, Front End Software Development, Data Pipelines
- **Published:** August 11, 2026
- **Apply:** https://find.jobs/jobs-near-me/apply/ats-redirect/?id=2918551117-2

## About the Role

security, performance, and scalability across all developed solutions.Contribute to the continuous improvement of development practices and code quality standards.QualificationsEssentialProven 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. DesirableDegree in software development.Experience with containerisation technologies such as Docker.Familiarity with cloud platforms (AWS, Azure, GCP) or on-premises hosting environments.Additional InformationAdditional informationð 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

## Description

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


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