AI Engineer

Imagine if you had the skills knowledge and teammates to both understand the root of the worlds most pressing problems and build the technologies and companies best positioned to solve them. RA Capital has done exactly that for more than two decades backing bold ideas in medicines to further human health and now expanding into Planetary Health to improve how efficiently we utilize the worlds precious resources.

RA Capital is among the leading providers of capital and services to the most promising innovators in the world. We invest flexiblyseed to IPO and beyond anywhere in the worldwith $10 B under management and a culture that prizes curiosity rigor and collaborative debate. We are investors who not only fund companies but get elbow deep in building them. From helping them recruit talent to helping them recruit patients for their studies to helping match them to strategic partners and even going to Washington to win reforms RA Capitals large team has people with nearly every relevant expertise one might need to turn an idea into a cure that actually helps people.

If you live for first-principles problem-solving with great colleagues thrive on complexity and want to do meaningful work that ripples across industries and ecosystems youll feel at home at RA Capital. Here questions are welcomed ideas are tested and victories are shared. Even our lawyers are creative and engaging. And dont get us started on our compliance teams wicked sense of humor; nothing about what we do is boring.

Are you ready to bring your creativity discipline and collaborative spirit to help us invent the future Join us and youll collaborate daily with investors founders physicians biologists engineers economists and reform advocates who think in systems and act with urgency.

Join us to invent a happier healthier more productive future - and have fun doing it.

• Design and develop end-to-end AI applications from concept through deployment
• Create and optimize deep learning models for diverse data types (time-series business data images) and prediction tasks
• Build and enhance large language models trained on proprietary research data
• Implement real-time prediction systems operating on various timescales (millisecond to daily)
• Develop full-stack AI applications with both frontend and backend components
• Optimize model performance and solve complex multi-layered data challenges

• Masters in a Computer Science AI and Machine Learning field required; Bachelors Degree with equivalent experience
• Extensive academic or professional background in Computer Science with AI specialization
• 2-3 years of professional software engineering experience
• Healthcare and/or finance industry experience strongly preferred

• Expert-level Python programming skills
• Strong proficiency in JavaScript and Java
• Deep understanding of machine learning fundamentals (regression classification clustering)
• Extensive knowledge of neural networks and deep learning frameworks (PyTorch)
• Proven expertise with AWS AI platforms (SageMaker Bedrock)
• Experience with containerization and orchestration (ECS Kubernetes)
• Strong foundation in algorithms and data structures
• Strong proficiency with the latest agentic coding techniques using tools like Claude Code or Codex.
• Professional experience with building advanced AI workflows MCPs agent swarms etc

• Excellent English communication skills for collaboration with team members and stakeholders
• Strong problem-solving abilities and investigative mindset
• Experience with full AI/ML development lifecycle
• Ability to work in a collaborative mentorship-driven environment
• Ability to work in a hybrid environment in our local Boston office