Full Stack Engineer - C#.NET/REACT

Job Description

<p><strong>Location:</strong> Remote (Toronto preferred, Canada or UK-friendly time zones)</p><p><strong>Type:</strong> Permanent Contract, full-time</p><p><br></p><p>Are you a seasoned Full Stack or Backend-leaning Developer who loves solving real, technical problems, not shipping "enterprise spaghetti code"? Want to help build next-gen cloud tools powered by AI, complex data modelling, and interactive 2D/3D visualisation?</p><p><br></p><p>An innovative technology company within the construction-tech and engineering-solutions space is growing its product team. They're building modern, cloud-based applications used globally, and you'll work closely with an exceptional Head of Product to shape two major new platforms currently in development.</p><p><br></p><p><strong>About the company: </strong></p><p><br></p><p>This is a small, senior, highly technical team that builds <strong>modern, cloud-native design and estimating software</strong> used in complex temporary works and engineering workflows. Their upcoming product suite includes:</p><p><br></p><ul><li><strong>A new intelligent design engine</strong> with AI-assisted modelling and automated calculations</li><li><strong>A web-based estimating platform</strong> that uses 3D models to generate accurate metrics, plans, and costs</li></ul><p><br></p><p>They value <strong>clean architecture, thoughtful engineering, and building things the right way</strong>, not rushing features at the cost of maintainability.</p><p><br></p><p>You'll take end-to-end ownership of features on two major new products, working across backend services, web clients, data modelling, and AI integrations. Expect a mix of architecture, hands-on building, problem-solving, and collaborating on product direction.</p><p><br></p><p><strong>You will:</strong></p><ul><li>Build and refine backend services using <strong>C# / ASP.NET Core</strong></li><li><strong>Develop React + TypeScript front-end components for highly interactive UIs</strong></li><li><strong>Work with PostgreSQL,</strong> including JSON-based modelling for complex nested structures</li><li>Help shape clean, scalable APIs (REST + GraphQL)</li><li>Integrate <strong>AI workflows</strong> (e.g., OpenAI/AWS) to transform natural-language instructions into design logic</li><li>Contribute to lightweight <strong>2D/3D viewer tools</strong> (Three.js, WebGL, GLB/gLTF handling) across both products</li><li>Collaborate directly with the Head of Product on technical decision-making</li><li>Deploy and support applications in <strong>AWS</strong> environments</li><li>Participate in code reviews, architecture discussions, and roadmap planning</li></ul><p><br></p><p><strong>We are looking for: </strong></p><p><br></p><p>Someone who is <strong>curious, hungry to learn, and excited by challenging technical problems</strong>, especially involving AI, 3D modelling, or data-heavy workflows.</p><p><br></p><p><strong>Must-have skills:</strong></p><ul><li>5+ years in software engineering (Full Stack or Backend-majority)</li><li>Strong backend capability with <strong>C#, ASP.NET Core (6+)</strong>, ideally .NET 8</li><li>Solid front-end experience with <strong>React + TypeScript</strong></li><li><strong>Strong database background, ideally PostgreSQL</strong> with EF Core</li><li>Experience building well-structured APIs (REST; GraphQL beneficial)</li><li>Cloud deployment experience (AWS preferred)</li><li>Strong problem-solving, communication, and ability to work in a remote, async-friendly team</li></ul><p><br></p><p><strong>Nice to have:</strong></p><ul><li>Exposure to <strong>3D/2D visualisation frameworks</strong> (Three.js, WebGL, canvas libraries)</li><li>Experience working with <strong>GLB/gLTF models</strong> or CAD/BIM toolchains</li><li>AI/ML integration experience (OpenAI, Bedrock, etc.)</li><li>Background in engineering, construction tech, or modelling-heavy products</li><li>Experience in early-stage product environments where requirements evolve quickly</li></ul><p><br></p><p><strong>Why join: </strong></p><ul><li>Highly collaborative role working directly with senior product and engineering leaders</li><li>Opportunity to solve genuinely complex, interesting technical challenges (3D graphics, AI design commands, intricate data modelling)</li><li>High autonomy with a team that values craftsmanship and clean architecture</li><li>Fully remote role with preference for EST-aligned hours</li></ul><p><br></p><p><strong>Apply now: </strong></p><p><br></p><p>If you're excited by the idea of shaping AI-powered engineering tools, love backend C# development, and enjoy working across the stack on technically meaningful products, this is a role where you'll have real influence and long-term impact.</p><p><br></p><p>Apply directly with your resume or send me a DM if you would like more info.</p>