Software Engineer, Product

Radical AI is hiring a Software Engineer, Product to build the product that powers materials discovery. The role owns features end to end, primarily across frontend applications for scientific workflows, while also contributing to backend services, APIs, data models, and quality practices.

Responsibilities

• Own a feature end to end: scope it with product and design, build it across the stack, and ship it
• Turn research workflows into intuitive, performant interfaces, working closely with product managers and designers
• Build and maintain complex, data-rich web applications in Svelte and SvelteKit, implementing high-fidelity designs from Figma with meticulous attention to detail
• Create data visualizations that help scientists explore and interpret experimental results
• Architect performant frontend systems that handle async data loading, real-time reactivity, and large-scale state management
• Design AI-agent experiences (tool calls, streaming responses) that fit into real scientific workflows
• Extend Cortex, our Go backend, with new RPC endpoints and business logic, including server-streaming endpoints that push live lab state to the UI as experiments run
• Design and evolve the protobuf schemas that define the contract between the backend and every client, keeping changes backward compatible as generated code lands in TypeScript, Go, and Python
• Model and update data in MongoDB: document schemas, indexes, and versioned migrations run against production data
• Write automated tests on both sides of the API and contribute to CI/CD pipelines
• Use user feedback, usage, and performance data to decide, with product managers, what to improve next

Skills

• At least 5 years of professional experience with TypeScript, HTML, and CSS (ideally Tailwind), with a solid grasp of responsive and mobile-first design
• Strong experience with modern frontend frameworks and reactive state management (Svelte/SvelteKit preferred; React or Vue acceptable if eager to learn Svelte)
• Comfortable with modern build tooling (Vite, ESBuild, Rollup), Node.js, debugging, and performant frontend architecture (async data loading, security, Sentry)
• Hands-on data visualization experience, ideally with D3 or low-level SVG/canvas graphics for custom scientific charts
• Demonstrated product sense: you've shipped user-facing features, made scope and tradeoff calls, and can explain why you built something the way you did
• Professional experience writing server-side code in a statically typed, compiled language (Go preferred; Java, C#, Rust, or C++ acceptable)
• Experience designing and evolving API contracts (gRPC and Protocol Buffers preferred; REST or GraphQL acceptable)
• Working knowledge of databases, data modeling, index query performance, and running production data migrations (MongoDB or document stores preferred)
• Clear, precise communicator, especially when working across disciplines
• Experience working directly with users or stakeholders to shape requirements
• Comfortable operating without a hard frontend/backend boundary: you pick up whichever layer the feature needs, and you know when to pull in a specialist
• We actively use AI-assisted development and expect engineers to find their own productive workflows with these tools
• Strong performance mindset: rendering large datasets without dropping frames, canvas-backed charts, virtualized tables and lists, or moving compute off the main thread with Web Workers
• Familiarity with agentic systems (prompting, tool calls, MCP) or AI-frontend integration (e.g. Vercel AI SDK)
• Experience delivering real-time data to clients: server-streaming RPCs, WebSockets, SSE, or database change streams
• Testing experience: Playwright, Vitest, API mocking, linters, and formatters
• Observability practice: OpenTelemetry traces, metrics, and structured logs, or an equivalent
• Advanced browser APIs such as the History API and structured concurrency in the browser
• CI/CD for build and test pipelines (we use self-hosted GitLab CI)

Benefits

• Work closely with a team on the cutting edge of AI research
• An opportunity to fundamentally change the way humanity makes progress through materials science discovery
• 100% employer-covered medical, dental, and vision insurance
• Unlimited PTO
• 14+ company holidays
• 2 weeks of company shutdown at EOY
• 401(k)
• Mental health support

Company Overview

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