Senior Developer (.NET​/C# ) Solidworks & AEC

Senior Software Developer – Solid Works & AEC Applications

Location:

Dartford

Laing O'Rourke is at the forefront of construction innovation, shaping the future of the industry through advanced technology, automation, and modern methods of construction. Our Technology & Innovation team is central to this transformation—developing smarter, more efficient ways to design and deliver complex projects.

We are looking for an experienced Software Developer with strong expertise in C#, .NET, and CAD automation to build and enhance engineering tools, particularly within Solid Works and AEC applications. This role focuses on improving engineering workflows, automating design processes, and building scalable, maintainable solutions that integrate seamlessly with internal systems.

You’ll collaborate closely with engineering, design, and manufacturing teams to reduce manual effort, improve consistency, and deliver high‑quality digital solutions. A structured approach to development and an interest in leveraging AI tools to enhance productivity will be key to success.

• Develop and maintain Solid Works add‑ins, macros, and API‑driven automation tools using C#
• Automate design workflows, including modelling, drawings, and BOM creation
• Improve efficiency and consistency by reducing manual engineering effort

• Design and build Windows desktop applications using .NET and C#
• Integrate CAD tools with PLM, ERP, databases, and cloud platforms
• Ensure solutions are scalable, maintainable, and well‑documented

• Work closely with engineers to translate technical requirements into software solutions
• Provide support for custom CAD applications and automation tools
• Troubleshoot issues related to performance, APIs, and automation workflows

• Maintain and enhance existing tools and documentation
• Contribute to development standards and best practices
• Support and mentor junior developers where required

• Strong experience with C#, .NET, and .NET Framework
• Proven experience with Solid Works and the Solid Works API
• Solid understanding of object‑oriented programming and software design principles
• Familiarity with engineering drawings, 3D modelling, and manufacturing concepts

• Experience with REST APIs, SQL, and system integrations
• Exposure to other CAD/CAE tools (e.g. Autodesk, Inventor, Revit, CATIA)
• Knowledge of CI/CD, Git, or Azure Dev Ops
• Experience with Drive Works or PDM systems
• Interest or experience in AI‑assisted development tools
• Understanding of construction industry processes

• Degree in Computer Science, Software Engineering, or related discipline—or equivalent experience
• Background in developing software for engineering or manufacturing environments

As part of the Disability Confident scheme, we would like to enable access to candidates with long‑term health conditions and disabilities through the ‘Offer an interview scheme’. This supports applicants that meet the essential criteria by offering an interview for the advertised position. Please let us know prior to interview what adjustments are required as well as discussing how we can support you in the workplace.