Ark is building the world’s highest-fidelity bioprocess simulation software so cutting edge science reaches those who need it most. Through democratizing complex multi-physics models in an easy to use software interface, Ark’s changing the way biopharma scientists work, ensuring that more medical breakthroughs break through from the lab to the world – faster. With Ark’s software, scientists can replace slow (multi-week), expensive ($10K-1M+) experiments with simulations that run in seconds! Ark is ushering in a new era of bioprocess, where scientists can run 10,000x as many experiments, making sure more life-saving medicine reaches those who need it most.

About the Role

Ark is seeking a full-stack Senior Software Engineer to join our fast-moving startup tackling some of the hardest problems in biomanufacturing. This is a high-ownership role focused on building core infrastructure, simulation tooling, and production-grade features that power our digital bioprocess platform.

You’ll collaborate closely with our world-class modeling, design, and product teams to create performant, scalable systems. From monorepo architecture to cross-platform type sharing, you’ll help define engineering excellence at Ark.

Key Responsibilities

• Backend ownership – Build and maintain scalable, type-safe services in a polyglot environment (Python, TypeScript, Go).
• Frontend engineering – Develop responsive SPAs using modern frameworks like React or Vue; optimize for performance and UX.
• Shared types & APIs – Design and manage shared schemas using OpenAPI, JSON Schema, and tools like Zod and openapi-typescript.
• Infrastructure & workflows – Maintain CI/CD pipelines, containerized environments with Docker, and IaC solutions.
• Code quality & design – Write clean, modular code with strong testing and Git workflows; contribute to a shared culture of engineering maturity.
• Cross-functional collaboration – Partner with bioprocess modelers and designers to ship production-ready simulations and interfaces.

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Tech Stack

• Backend: Python 3.11, FastAPI, Postgres, Docker
• Frontend: TypeScript, React, Tailwind, Zustand (or equivalent)
• Infrastructure: Cloud deployment (e.g., AWS), Docker, Helm, K8
• Tooling: OpenAPI, JSON Schema, zod, shared schema generation across frontend/backend

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About You

• 5+ years of experience in professional software development, with fluency in Python, Go, TypeScript, or similar strongly typed language.
• 4+ years of frontend experience with frameworks like React, Vue, or Svelte
• Comfortable navigating polyglot codebases with shared types and monorepo setups
• Deep understanding of frontend component architecture and state management (e.g., Zustand, Redux, Pinia)
• Strong foundation in testing, modular system design, Git workflows, and asynchronous team communication
• Experience with Docker-based development and CI/CD best practices
• Bonus: Exposure to systems languages (Rust, Java, C#, C++) or Kubernetes

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Position

• Full-time, exempt
• Location: Cambridge, MA
• Benefits: Health, dental, and vision coverage, holiday and vacation time, 401k matching, stock options, and career growth opportunities

Ark Biotech is an equal-opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.