Senior Full Stack Developer (.NET / React)

Step Into a High-Impact Developer Role with a Thriving, Innovative Business

Steelx is looking for an experienced Senior Full Stack Developer to help lead the next evolution of our engineering and business platforms. Be part of our small, nimble team, owning a diverse range of projects, from our cutting-edge 3D app and comprehensive engineering backend to a mature supportive business platform that handles CRM and automates interactions with our supplier partners.

And here’s the kicker: we work a full-time week of four days most weeks! Enjoy a genuine long weekend—most weekends—while doing work that matters.

What You’ll Do

• Design, develop, and deploy web applications and backend services
• Own features from conception to production in a fast-paced environment
• Maintain and improve existing systems with clean, scalable code
• Collaborate directly with product, engineering, and business teams to shape requirements
• Use AI-assisted dev tools and modern workflows to accelerate delivery
• Share your ideas and help steer the technical direction of key projects

What You’ll Bring

• 5+ years of experience in professional software development
• Proven experience with C# / .NET and React.js
• A relevant degree such as in Computer Science or Software Engineering
• Willingness to mentor junior developers and support their technical growth
• Enthusiasm for Agile development practises
• Excellent communication and teamwork skills, with a readiness to contribute ideas
• Demonstrable understanding of layered architecture in applications of scale
• Interest in emerging agentic coding tools, but not reliant on them

Our Stack Includes

• C# / .NET
• JavaScript, React, Typescript
• Primarily MySQL databases
• AWS hosting and Azure-driven development

Why Join Steelx?

We’re an independent, family-owned company in the Steel Building industry, with over 20 years of success and a growing international footprint. Our culture is grounded in innovation, trust, and balance.

• 4-day work week – talk to us about how this works!
• The role is in-office only, promoting a close-knit, high-performing team
• Opportunity to learn new skills as the software industry evolves
• A business that genuinely values its people

Ready to Make Your Mark?

This isn’t just another dev role. It’s your chance to shape real products used by real people—at scale—and help us redefine an entire industry. Join us and unleash your full potential.

Apply now. Let’s build something exceptional.