Senior Backend Engineer

Location

London

Full time

Hybrid

Engineering

Heidi is building an AI Care Partner that supports clinicians every step of the way, from documentation to delivery of care.

We exist to double healthcare’s capacity while keeping care deeply human. In 18 months, Heidi has returned more than 18 million hours to clinicians and supported over 73 million patient visits. Today, more than two million patient visits each week are powered by Heidi across 116 countries and over 110 languages.

Founded by clinicians, Heidi brings together clinicians, engineers, designers, scientists, creatives, and mathematicians, working with a shared purpose: to strengthen the human connection at the heart of healthcare.

Backed by nearly $100 million in total funding, Heidi is expanding across the USA, UK, Canada, and Europe, partnering with major health systems including the NHS, Beth Israel Lahey Health, Maine General, and Monash Health, among others.

We move quickly where it matters and stay grounded in what’s proven, shaping healthcare’s next era. Ready for the challenge?

A Senior Software Engineer responsible for the execution of the backend features, with a deep technical understanding and how it translates to representing user needs. You will have operated in a hyper growth startup with experience building SaaS products.

You will also have a deep understanding of the key challenges engineers face and a firm grasp on design principles in prioritizing key features and capabilities.

Your superpower is how to bridge the gap between technical specifics and business needs effortlessly and turn high-level designs into real-world solutions.

You thrive in challenging situations, and you appreciate the dynamics of a flexible, flat-structured work environment. You are quick to grasp the nuances and complexities of developing an AI product healthcare internationally.

We know that brilliant people can come from unlikely places; if you have a proven track record of shipping spectacular technically challenging products and features, regardless of industry, we want to meet you.

Ultimately you will have the opportunity to work with the engineering mastermind behind Heidi developing AI products which will change the face of healthcare

• Autonomously deliver beautiful & robust code with considerations on code structure design and scalability.

• Implement and optimize data storage solutions.

• Design, build, and maintain high-performance backend systems using Python.

• Architect and manage cloud infrastructure, ensuring scalability and reliability.

• Develop and manage message queue systems for real-time data processing.

• Collaborate with frontend and AI teams to integrate new features and enhance existing APIs.

• Optimize API performance and handle API versioning, documentation, and testing.

• Strong sense of ownership & strong problem-solving skills.

• 5+ years of backend development experience.

• Solid experience with Mongo
  
  DB and Redis for data management.

• Experience building & managing message queue systems at scale.

• Writing testable, effective and communicative code

• Data modeling, design patterns, understanding trade-offs

• Deep understanding of API design principles, including security, versioning, and performance.

• Data & application security knowledge and skills

• Experience in integrating with third-party systems

• Competent with source code control and CI/CD pipeline technologies.

• Architecting and building highly available, scalable, secure & performant systems

Heidi builds for the future of healthcare, not just the next quarter, and our goals are ambitious because the world’s health demands it. We believe in progress built through precision, pace, and ownership.

• Live Forever - Every release moves care forward: measured, safe, and built to last. Data guides us, but patients define the truth that matters.

• Practice Ownership - Decisions follow logic and proof, not hierarchy. Exceptional care demands exceptional standards in our work, our thinking, and our character.

• Small Cuts Heal Faster - Stability earns trust, speed delivers impact. Progress is about learning fast without…