Updated July 11, 2026 · techinterview.org

Tempus AI Interview Guide

Company overview: Tempus (now Tempus AI, NASDAQ: TEM after 2024 IPO) is a precision-medicine company combining genomic sequencing, clinical data, and AI to inform cancer treatment and other medical decisions. Chicago headquartered with engineering across Chicago, Atlanta, Boston, and remote. Founded by Eric Lefkofsky (Groupon co-founder) in 2015. Engineering domains span clinical lab software, genomic analysis pipelines, AI/ML for clinical decision support, and the customer-facing platform used by oncologists.

Interview process

Timeline: 4–6 weeks.

1. Recruiter screen (30 min). Expect questions about your background, why Tempus and precision medicine interest you, and your compensation expectations. Have a short, specific reason for wanting to work on clinical or genomic data ready to go.
2. Hiring manager screen (45 min). The manager walks through your recent projects and how they map to the team’s roadmap. Be ready to explain a trade-off you made and why, and to ask pointed questions about what the team is actually building.
3. Technical phone screen (60 min). Usually one or two LeetCode-medium problems in a shared editor. Talk through your approach before you type, and state the time and space complexity of your solution before you’re asked.
4. Virtual onsite (4–5 rounds).
   • 2 coding rounds — LeetCode-medium problems, mostly arrays, strings, hashing, and graphs, in Python for ML and data roles. Name the coding pattern you’re applying and get to working code with correct edge cases; clean beats clever here.
   • 1 system design round (often health-data-flavored) — expect a data-heavy prompt like ingesting lab or genomic results at scale, so be ready to reason about storage, throughput, and consistency for regulated data. Sketch the data model and API boundaries early.
   • 1 domain depth round for senior+ (genomics pipelines, clinical data integration, ML for medical applications) — you go deep on one area you claim as your strength, and the interviewer keeps asking “why” until you hit the edge of your understanding. Bring a real system you built and know cold.
   • 1 behavioral round — Tempus probes how you handle ambiguity and work across scientists, clinicians, and engineers. Prepare two or three stories with a clear situation, your specific actions, and a measurable result.
5. Hiring committee review. The committee reads written feedback from every interviewer and calibrates it against the level you’re targeting. A strong signal in one round won’t paper over a clear miss in another, so aim for consistent performance across the loop.

Common technical questions

• Standard LeetCode mediums (Python dominant for ML / data; Go and Java for backend). These are screening-level problems—arrays, strings, hashing, graphs—not exotic puzzles, so correctness and clean edge-case handling matter more than a clever trick.
• Bioinformatics pipelines for genomics-track roles: BWA, GATK, variant calling, annotation. Be ready to walk the alignment and variant-calling steps end to end and explain where quality filters belong. Interviewers probe whether you know why each step exists, not just the tool names.
• Healthcare data integration: HL7, FHIR, EHR APIs, HIPAA compliance. Know when a system speaks HL7 v2 versus FHIR and how you’d bridge the two. Expect to explain how you move patient data between systems without exposing PHI.
• ML for medical applications: how to validate clinical models, regulatory considerations, fairness across patient populations. The focus is why medical models fail differently than consumer ones—validation that mirrors real deployment and performance that holds across patient groups. Have a concrete validation choice you can defend.
• For senior+: building reliable scientific pipelines under regulatory scrutiny. Expect to discuss reproducibility, versioning of both data and code, and audit trails. A pipeline that produces a clinical result has to be re-runnable and traceable months later.

Compensation (2026 estimates, Chicago)

• Mid: $130–170K base + RSU + bonus → $200–280K total
• Senior: $170–230K base + RSU → $280–400K total
• Staff: $230–290K base + RSU → $400–550K total

Below FAANG cash; Chicago cost of living offsets partially. Post-IPO equity has been volatile.

Sample interview questions in depth

Coding (Python-heavy ML / data engineering)

• Implement variant calling from sequence data. Walk through how to align reads to a reference genome, identify SNVs and indels, and apply quality-score filters. Senior candidates should mention BWA-MEM, GATK HaplotypeCaller, and the trade-offs of joint genotyping vs single-sample calling.
• Design a feature store for clinical-genomic data. Patient features (demographics, comorbidities) plus genomic features (mutations, copy-number, methylation). Discuss versioning, feature freshness, and how to handle late-arriving lab results.
• Build a clinical trial matching service. Match patients to trials based on genomic and clinical inclusion criteria. Discuss how to handle ambiguous criteria (eligibility windows, concurrent therapy restrictions) and how oncologists should be in the loop.

ML for medical applications (senior+)

• Validation strategies for clinical-grade models: hold-out by site, hold-out by year, prospective validation. Why standard k-fold cross-validation is misleading for medical data.
• Fairness across patient populations: how to measure model performance disparities across race, sex, age, and what to do when you find them. The current FDA stance on AI/ML medical-device approval (2024 guidance).
• Hallucination and grounding for LLM-based clinical tools: why “the model is usually right” is unacceptable when the model is summarizing pathology reports. Citation grounding, retrieval augmentation, and physician-in-the-loop design.

Healthcare data integration

• HL7 v2 vs FHIR: the structural differences, why most US healthcare systems use both, and how to bridge them. Specific challenges with HL7 v2 (positional fields, optional fragments, vendor-specific Z-segments).
• Tempus’s data scale: tens of millions of clinical records combined with genomic and imaging data. Discuss storage and query strategies that work at petabyte scale.
• De-identification for research use: HIPAA Safe Harbor vs Expert Determination, k-anonymity, and the trade-off between privacy and research utility.

What’s distinctive about Tempus

Tempus combines three things rare to find together: a clinical lab business (revenue), large clinical-genomic data scale (a moat), and an AI/ML team building tools for oncologists (the product). The engineering work spans bioinformatics pipelines, clinical-trial matching software, AI agent development, and platform infrastructure for handling regulated data. Candidates who get senior+ offers typically have either deep domain experience (genomics, oncology informatics) or strong general engineering plus visible curiosity about the medical context.

Post-IPO compensation context

Tempus IPO’d in mid-2024. The post-IPO equity has been volatile, like most newly-public health-tech companies. Negotiation should focus on cash and meaningful sign-on bonus rather than relying on equity appreciation.

Frequently Asked Questions

Do I need biology / genomics background?

For bioinformatics-track roles, substantial domain background is expected. For platform / backend / frontend engineering, general engineering plus health-tech curiosity is sufficient.

How does Tempus compare to other health AI firms?

Tempus is the largest pure-play precision-medicine company. Competitors include Foundation Medicine (Roche), Guardant Health, Caris Life Sciences, and various AI-focused startups. Tempus has the broadest data scale across genomic and clinical sources.

Is the work HIPAA-regulated?

Yes, the company handles protected health information extensively. All engineering roles touching PHI require HIPAA training and adherence.

What languages are used?

Python for ML and data engineering; Go and Java for backend services; TypeScript / React for frontend. Bioinformatics pipelines often use a mix of Python, R, and shell scripting.

Adjacent Healthcare Tech

• Veeva Systems — life-sciences SaaS
• 23andMe — consumer genomics
• Epic Systems — EHR