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About the Role
Heidi is seeking a Senior Full-Stack Engineer to own new features end-to-end, from the React interface to the Python service and underlying data model. The ideal candidate has experience shipping SaaS products in a high-growth startup, with a keen eye for both user interface performance and backend efficiency. You should be comfortable taking a loose brief and delivering a working, tested feature independently, understanding user needs beyond the ticket description. This role offers the opportunity to thrive in a flat, flexible team and quickly learn the specifics of building an AI product for a global healthcare market.
Responsibilities
- Work alongside engineers to ship AI products that change healthcare operations.
- Own features from database to browser: design data models, build Python services, ship React/TypeScript interfaces, and iterate based on user feedback.
- Build fast, accessible interfaces using React, TypeScript, and Next.js.
- Design, build, and run high-performance backend services in Python, utilizing MongoDB and Redis.
- Design APIs for other engineering and AI teams, managing versioning, documentation, testing, and security.
- Develop and manage message queue systems for real-time data processing.
- Shape cloud infrastructure for scalability and reliability.
- Collaborate with product, design, and AI engineers to translate briefs into shipped workflows.
- Write clean, testable, and maintainable code.
Requirements
- 5+ years of software engineering experience with production work on both frontend and backend.
- Strong proficiency in React and TypeScript, with experience in Next.js or a comparable framework.
- Knowledge of browser rendering performance, state management, and accessibility.
- Experience with Python in production for building, testing, and running backend services.
- Hands-on experience with MongoDB and Redis, including data modeling and design patterns.
- Experience building and managing message queue systems at scale.
- Deep understanding of API design, including security, versioning, and performance.
- Knowledge of application and data security on both client and server sides.
- Experience integrating with third-party systems.
- Proficiency with source control and CI/CD pipelines.
- Experience building scalable, reliable, and secure systems.
- Passion for AI, demonstrated through hands-on building, prototyping, or side projects.
- A proactive approach to building solutions.
- Confidence in thinking and openness to feedback.
Skills
- React
- TypeScript
- Next.js
- Python
- MongoDB
- Redis
- API Design
- Message Queues
- Cloud Infrastructure
- Source Control
- CI/CD
- AI
Location
- 190+ countries
Work Type
- Full-time
- Remote
Experience Level
- Senior
Benefits
- Health cover
- Dental cover
- £700 annual learning and development budget
- £100/month health and wellness allowance
- £500 home office budget
- 26 weeks paid primary parental leave
- 18 weeks paid secondary parental leave
- Fertility support up to £7,000
- Four weeks of work from anywhere per year
- Serious equity
About the Company
- Heidi is building the future of healthcare with an AI Care Partner, having processed data from 175 million patient visits and supported 67 million clinical hours.
- The platform currently supports 2.8 million patient sessions weekly across 190+ countries, in 110 languages and over 200 specialties.
- Heidi's mission is to double the world's capacity for care and strengthen the human connection in medicine.
- The company has achieved product-market fit with a popular freemium medical scribe and is expanding its offerings.
- Heidi has experienced significant growth, increasing annual recurring revenue from $1 million to $50 million in two years.
- The company has secured US$340 million in funding, including a $100 million Series C and a $240 million growth investment.