Software Engineer

Join the in-person Gurugram team building ARPM's visual programming language and next-generation development environment. You will own slices of a live C# / .NET product spanning a headless graph engine, a cross-platform editor, backend and session transport, plugins and host interop, and AI-assisted authoring - design, implement, test, and ship.

What you'll do

• Extend the execution model: components, ports, wires, events, validation, and error propagation.
• Improve the editor: canvas behaviour, responsiveness, and the line between local interaction and server sync.
• Keep a strict split between core computation, transport, and UI - the engine should run headless.
• Ship plugins and host-side runtimes so one graph can target Rhino, Revit, Unity, and similar applications.
• Write tests that exercise runtime behaviour - event ordering, cross-thread events, and data-plus-event graphs - not only isolated functions.
• Help design how agents propose graph edits, and how those edits are judged against explicit evaluations.
• Work across ASP.NET, gRPC, and related transports between the editor, compute workers, and host runtimes.
• Read existing architecture before adding surface area, then own the slice through to ship.

What we're looking for

• Professional fluency in C# and .NET. This is a C# product - this is not a pick-up-C#-on-the-job role.
• Comfort with systems software, not only CRUD apps: graph data structures, execution order, concurrency, serialisation, plugin loading, and clear module boundaries.
• Ability to work in a multi-process / client-server product (editor, backend, compute hosts) and decide what belongs on which side of the wire.
• Solid git hygiene, willingness to write unit and behavioural tests, and the habit of reading before rewriting.
• Clear written and spoken English, and the ability to discuss design trade-offs in person.
• Comfort working full-time on-site in Gurugram. This is not a remote or hybrid-by-default role; relocate to NCR if you are not already here.
• Demonstrated work. A computer-science degree is not required.
• Willingness to show skill through an open-ended assignment or a research/prototype proposal you suggest - we do not hire on timed algorithm drills.

Nice to have

• AEC technology: Grasshopper, RhinoCommon, Revit API, Dynamo, ShapeDiver, Speckle, or shipping plugins and configurators.
• AI agent loops: tool-calling agents, MCP servers or clients, eval harnesses, or spec-driven agentic products - not only using a chatbot.
• IDE / language tooling: editors, language servers, compilers, REPLs, debuggers, node canvases, or developer-tool UX.
• Visual / dataflow programming: node-wire environments, event-driven runtimes, or comparable graph UIs.
• Avalonia, WPF, canvas/Skia, WebAssembly, gRPC, Protocol Buffers, or ASP.NET Core.
• C++, Unity, Python for embedding, or collaborative editing (CRDT or OT).