One Medical's Interview Process (2026)

Blog / One Medical's Interview Process (2026)
One Medical Interview Process
The One Medical software engineer interview is a structured, multi-stage process that most candidates complete in about a month. The stages can vary by team and level, but you can generally expect the following flow:
  • Recruiter Screen: A 15 to 30 minute call covering your background, logistics, and why you want to work at a healthcare-focused company. Visa sponsorship is typically addressed here, so come prepared to discuss it early.
  • Karat Technical Screen: A live coding session lasting around 60 minutes, usually conducted through the third-party Karat platform. Expect 2 to 3 coding problems focused on data structures and algorithms, plus a debugging exercise.
  • Virtual Onsite Loop: A series of back-to-back rounds, typically 3 to 4 in total, covering system design, coding, and behavioral questions. This is usually conducted virtually with different team members and lasts around 3 to 4 hours.
  • Healthcare Scenario Round: A round specific to One Medical where you may be asked how you would handle technical failures affecting patient care or how you would prioritize features for medical providers versus patients.
  • Executive or Leadership Round: For some levels, a final 30 to 45 minute conversation with a Director or VP of Engineering focused on long-term fit and leadership potential. Not all candidates report this stage.
To prepare effectively, break your study plan into these key areas that reflect what One Medical engineers are actually tested on:
  • Data Structures & Algorithms (DSA): LeetCode-style coding problems tested in the Karat screen and onsite rounds.
  • SQL: Database queries focused on real-world data scenarios, often with a healthcare context.
  • System Design: Architecting scalable, HIPAA-conscious systems with attention to trade-offs and data sensitivity.
  • Behavioral: Mission-fit and competency-based questions assessed through structured panel interviews.
1. Data Structures & Algorithms (DSA)The Karat screen is the first major technical hurdle, and it moves fast. Interviewers value clean, correct code on the first pass, so practice writing solutions without heavy back-and-forth debugging.Graph traversal problems come up frequently, often disguised in healthcare scenarios. For example, a BFS problem might be framed as finding the shortest path through a clinic layout. Practicing graphs and matrix problems will cover a lot of ground here.Other common patterns include two-pointers, sliding-window, and standard array manipulation. Problems like Number of Islands and Meeting Rooms II are representative of what candidates have reported seeing.For a structured starting point, work through our 100 most commonly asked DSA questions to make sure you have the core patterns covered before your Karat session.
2. SQLSQL questions appear in One Medical interviews and are often framed around patient or user data. Common asks include classic ranking problems and time-series calculations.Specific questions candidates have reported include Second Highest Salary, Department Top Three Salaries, and Moving Average of Daily Active Users. These map directly to window functions, ranking functions, and aggregation.Make sure your SQL theory is solid, particularly around CTEs, window functions, and how to handle NULLs in aggregations.
3. System DesignSystem design rounds at One Medical have a distinct flavor: interviewers want to see that you can think about scalability and also about data sensitivity. Expect questions about HIPAA compliance, access control, and how you would design systems that handle protected health information.A patient appointment booking system is one example that has come up, requiring you to reason through read-heavy versus write-heavy trade-offs. Brush up on High-Level Design concepts and practice drawing out architectures using our System Design AI Whiteboard.Familiarizing yourself with system design core concepts and caching fundamentals will also help you discuss performance trade-offs confidently during the round.
4. BehavioralOne Medical places real weight on mission alignment. You will almost certainly be asked some version of 'Why healthcare?' and interviewers are listening for genuine motivation, not a rehearsed answer.The behavioral panel is reported to follow a checklist-style format where interviewers track specific signals. Structuring your answers using the STAR format makes it easier for them to capture those signals and gives your answers a clear arc.Expect questions like 'Tell me about a time you pushed back on a teammate's technical idea' and 'How do you handle pressure in a fast-paced environment.' Prepare a set of strong stories and review our Behavioral Playbook to sharpen how you frame and deliver them.
ConclusionOne Medical's interview process rewards candidates who combine solid technical fundamentals with a clear sense of why they want to work in healthcare technology. Start with the Karat screen, lock in your system design approach, and make sure your behavioral stories are ready. Follow the One Medical Interview Roadmap for a step-by-step plan that ties everything together.

About TechPrep

Never walk into a technical interview unprepared again. TechPrep empowers software engineers to stop guessing and start getting offers. We provide the exact questions asked by tech companies across Data Structures & Algorithms, System Design, Low-Level Design & Practical coding rounds. Don't leave your career up to chance. Join thousands of engineers who have successfully navigated the tech hiring maze and landed roles at top tech companies.