About Ark

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, we can change 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 hiring a Software Tech Lead to drive the architecture, development, and scaling of the application layer of Ark’s bioreactor simulation platform. This is a high-impact leadership role in a fast-moving startup, where you will shape the technical vision, optimize processes, and lead a small team while spending most of your time coding.

As the key technical leader, you will own backend architecture and infrastructure, ensure seamless integration with the frontend, and collaborate with modelers to translate cutting-edge simulations into a scalable platform. You’ll be responsible for making strategic technical decisions, writing code, mentoring a growing team, and balancing fast iteration with long-term stability.

Key Responsibilities

• Architect scalable systems – Design, build, and maintain high-performance software that integrate with modeling simulation engines.
• Hands-on development – Contribute high-quality code while guiding the team through technical challenges.
• Own cloud infrastructure – Manage and scale our AWS services, ensuring a secure, reliable cloud environment..
• Own engineering processes – Improve developer workflows, testing pipelines, CI/CD, and deployment automation.
• Lead and mentor – Manage a small team of engineers, foster a culture of learning, and set a high bar for code quality and technical excellence.

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Tech Stack

• Backend: Python 3.11, FastAPI, Postgres, Docker
• Frontend: TypeScript, React, Tailwind
• Infrastructure: Cloud deployment (e.g., AWS)

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About You

• 5+ years of software development experience, with 1+ year of managing others
• Full-stack understanding – 3+ years backend-experience with ability to support the front-end in a crunch.
• Entrepreneurial mindset – You’re a self-starter who thrives in an early-stage environment, excited to wear many hats, own major decisions, and have a bias for action
• Experience with web-based applications
• Strong problem-solving skills – You can debug complex systems, optimize performance, and resolve scaling challenges.
• Cloud deployment experience – Familiarity with AWS, containerization, and CI/CD workflows.

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Position

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

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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.