Senior Software Engineer

Senior/Staff Software Engineer

Location: Hybrid, Sheffield, UK

Type: Full-time, Permanent

Salary: £60,000 - £65,000 + Meaningful equity, Private healthcare & Pension

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The hiring company is Sheffield based Deep Tech Start up building a new class of manufacturing technology - fast, digital, zero-waste, and fundamentally different to anything on the market today with a flexible approach towards production challenges.

Their system uses tens of thousands of digitally controlled pins to form a mould in minutes, thermoform a part directly over it, and then reconfigure into the next shape. No resin. No waste. No single-use tooling.

The Role

There's just one thing standing between their hardware and the world. The software. This is a high ownership position and you will own the full pipeline.

This is the founding software hire taking ownership of a green-field build - you set the architecture, choose the stack, and shape the software team from here. No legacy to inherit. No committee to negotiate with.

We require a computational geometry engineer who has shipped production C++ or Rust software that prepares geometry for a real-world manufacturing process - modelling the physics and material behaviour of that process in code:

Including

• Geometry engine - STL ingest, mesh repair, surface analysis, curvature and normal computation across meshes up to 500k+ triangles
• Multi-directional pin projection - projecting tens of thousands of pins from multiple tool directions, picking the right pin per region
• Split-line computation - deciding dynamically where coverage hands off between tools so the formed surface is seamless
• Surface mapping & gap resolution - turning a discrete pin field into something that behaves like a continuous mould
• Validation - predicting forming defects (undercuts, bridging, thinning) before they happen. Bar: zero defect escapes
• Compensation engine - an adaptive, data-driven system that learns from real forming results to refine material behaviour models over time
• Operator UI & machine output - a cross-platform desktop app a lab technician can drive a 60-stage case through in under two minutes of manual interaction

*One Non-Negotiable: You Build With AI*

Key Skills

• Deep C++ or Rust in a performance-critical production context
• Computational geometry, mesh processing, or 3D graphics background
• Shipped production desktop or embedded software
• Comfort owning a system end-to-end: architecture, implementation and performance
• Judgement to know when to build something clever and when to ship the simplest thing that works

Preferred

• Skills: GPU compute - CUDA, OpenCL, or compute shaders on real workload
• Familiarity with CGAL, libigl, Open3D, or equivalents
• Hands-on with CAD/CAM, slicer software, dental tech, additive manufacturing, or any field where geometry meets physical machines
• Software that talks to hardware - serial protocols, machine controllers, motion systems
• Cross-platform desktop UI work xwzovoh (Qt, Electron, or a strong opinion on what's better)

Experience required

• Professional software engineering experience. Could be a strong senior pushing into staff, or an established staff/principal engineer wanting a founding role
• Has been the technical owner of a substantial system (sole engineer at a small company, founding engineer at a start-up, or tech lead of a small focused team within a CAD/CAM/CAE house)
• Comfortable being the software person in a hardware company (substantial work is geometric and physical modelling)

Nice to have:

• A degree in Computer Science, Mathematics, Physics, Mechanical Engineering, or Computational Engineering
• A Masters or PhD in computational geometry, applied mathematics, continuum mechanics, computer graphics, or a related discipline
• Self-taught engineers with a strong shipping record are equally valid
• Differential geometry, optimisation, or applied ML background
• Medical device software experience — MDR, FDA 510(k), IEC 62304