Flatiron Health Internship 2027–2028: Programs, Deadlines & How to Apply

Last updated: August 2026

Flatiron Health software engineer interns earned $52.08 an hour, roughly $9,028 a month, plus a $1,500 monthly housing stipend in the most recently documented Summer 2024 cohort, one of the higher-paying healthtech internships anywhere. This is the company whose OncoEMR platform runs in more than 265 community oncology practices nationwide, an independent affiliate of the Roche Group since a $1.9 billion acquisition in 2018. No internship is posted for Summer 2027 yet, but Flatiron ran paid summer cohorts every year from 2019 through 2024, so here is everything you need to line yourself up before those seats reappear.

Quick Facts

Flatiron Health runs recurring paid summer internships in software engineering and data science out of its NYC headquarters, but nothing is posted for Summer 2027 yet. The most recent documented pay was $52.08/hour plus a $1,500/month housing stipend, the interview weighs SQL far more heavily than a typical tech company, and a genuine "Why Flatiron?" answer is a real gate.

Externships are short, remote projects where you finish real work for a real company. The Beats by Dre Data Analytics Externship builds the SQL-and-storytelling muscle Flatiron's interview probes hardest, and the Healthcare Operations Consulting Externship gives you the healthcare-domain fluency that makes a "Why Flatiron?" answer land. Explore all Externships.

What Is a Flatiron Health Internship?

Flatiron Health is a New York oncology-data company that runs recurring paid summer internships in software engineering and data science. Founded in 2012 by former Google employees Nat Turner and Zach Weinberg after Turner's young cousin was diagnosed with a rare leukemia, the company builds OncoEMR (an oncology electronic health record used in more than 265 community oncology practices), point-of-care tools, and real-world evidence datasets that power cancer research. Its stated mission is "to improve and extend lives by learning from the experience of every person with cancer." Roche acquired the shares it did not already own for $1.9 billion in February 2018, valuing Flatiron at roughly $2.1 billion, and the company now operates as an independent affiliate of the Roche Group with 1,001 to 5,000 employees, its own brand, and its own careers page. An internship here means working on messy, high-stakes clinical data with real patient impact, which is exactly why the interview screens so hard for both SQL rigor and genuine mission fit.

When Do Flatiron Health Internship Applications Open for 2027–2028?

Flatiron has not published a Summer 2027 internship timeline, and as of August 2026 there are zero intern postings live on its careers page (all roughly 35 open roles are full-time or senior). The schedule below is projected from documented prior summer cohorts, which recruited on the standard US tech summer-intern calendar: postings open in the fall, interviews run through winter and spring, and the program runs May or June through August. The single most useful thing you can do now is turn the wait into evidence. Become fluent in SQL and Python on real, messy datasets, build a data project you can talk through end to end, and set alerts on both flatiron.com/careers/open-positions and the "Internships and employment programs" section of the teams page so you see a Summer 2027 posting the day it appears.

Why You Must Apply the Week Applications Open

Flatiron has never published a formal deadline for interns, and community reports describe a roughly 3 to 5 week process that moves candidates through as they apply, which is the signature of rolling review. In a rolling process, the calendar is your competitor: recruiters read and advance strong applications in the order they arrive, and by the time a stated deadline would pass, the best candidates have often already reached the onsite. That means when a Summer 2027 posting appears in Fall 2026, you want your application in during week one, not week four. Practically, do three things now so week one is effortless. First, have a resume that already foregrounds SQL and Python on real data. Second, have a specific, non-generic answer to "Why Flatiron?" that references OncoEMR or real-world evidence, because the behavioral round genuinely penalizes vague mission answers. Third, set alerts on the careers page so the posting does not sit unseen for two weeks. The preparation is the part you control; the window is the part you cannot, so close the gap between them.

Which Flatiron Health Internship Programs Should You Target?

As of August 2026 there are zero intern postings live, so the tracks below combine the internships Flatiron has actually documented in prior cycles with full-time functions whose intern versions are most likely to return for Summer 2027. Software Engineer and Data Science are the safest bets; the quantitative-sciences track is a full-time analog whose intern version is not confirmed.

See live roles at flatiron.com/careers/open-positions. Note that Flatiron's own careers copy is unusually welcoming to non-traditional backgrounds ("no matter your origin story"), so a self-taught coder with a strong data project and a genuine cancer-care motivation is a real candidate, not a long shot.

What Are the Eligibility Requirements?

Flatiron has no live intern posting, so the requirements below are drawn from the documented Data Insights Engineering Intern JD (WayUp) and the company's early-career framing:

• Enrollment: Currently enrolled students in a technical field of study such as engineering or computer science. The documented JD targeted rising seniors and near-graduation undergraduates, and Levels.fyi tags documented interns as "Undergrad (Junior)," i.e., rising seniors.

• Origin story: Self-taught coders are explicitly welcomed. The careers page frames it as "no matter your origin story," and the intern JD says the team can teach SQL, Python, and healthcare context to a quick learner.

• Technical baseline: Comfort with programming and scripting and the ability to pick up new languages fast. SQL, Python, and/or R are the working languages.

• Mission fit: A genuine interest in improving cancer care through data and technology is heavily weighted and screened for in a dedicated behavioral round.

• GPA: No published GPA cutoff (NOT FOUND).

• Work authorization / visa sponsorship for interns: NOT FOUND. Not stated in the available intern JDs; confirm on the live posting.

Why SQL and Mission Fit Decide the Loop

Two things separate Flatiron's process from a generic tech interview. First, SQL is weighted far more heavily than at most companies: multiple interview sources put it as the #2 tested area, and you should expect window functions, CTEs, multi-table JOINs, and NULL handling (COALESCE and ISNULL) on messy clinical datasets rather than a single toy query. Prepping only LeetCode-style algorithms is a common way to underperform here. Second, mission fit is a real gate, not a formality. A dedicated behavioral round asks "Why Flatiron Health?" and rewards concrete references to OncoEMR or real-world evidence work while penalizing generic answers. The encouraging flip side is that the documented intern JD explicitly says candidates who do not yet know SQL, Python, or the healthcare context can learn on the job, so the bar is quick-learning ability and clear communication with non-technical stakeholders like clinicians and clients, not pre-existing healthcare expertise.

What Skills Does Flatiron Health Look For, and How Do You Build Them?

Because no intern posting is live, the skill picture below is drawn honestly from four JD-derived sources: the WayUp Data Insights Engineering Intern JD, the InterviewQuery Flatiron SWE guide, the TechPrep interview breakdown, and Flatiron's current full-time engineering and data-science postings. The consistent signal is that this is a data company first: Python appears in every source, SQL is the standout differentiator, and healthcare-domain curiosity shows up as often as core algorithms. R and data-pipeline work reflect the real-world-evidence side of the business, and stakeholder communication matters because interns talk to clinicians and clients, not just to other engineers.

How Is Demand for Software Engineering Interns Moving Right Now?

Build These Skills Before You Apply

And every skill in that chart maps to a remote Externship where you finish a real project before a posting ever appears.

How close is the overlap? The Beats project is exactly the SQL-to-insight work Flatiron's SQL-heavy loop probes for, the Wayfair project yields the applied-ML build evidence a data-science round wants, and the Healthcare Operations project gives you a concrete cancer-care-adjacent story for the "Why Flatiron?" gate.

What Is the Flatiron Health Application and Interview Process Like?

Flatiron has no separate published intern process, so the loop below is the documented SWE / new-grad process, which the intern track mirrors closely. Community reports put the full timeline at about 3 to 5 weeks from application to offer.

1. Monitor and apply. Watch flatiron.com/careers/open-positions and the "Internships and employment programs" link on flatiron.com/careers/teams starting Fall 2026, and apply directly through the Greenhouse-powered careers page the week a Summer 2027 posting appears.

2. Recruiter screen (~30 minutes). Background, interest in healthcare tech, and mission alignment. Have a specific reason you want to work on cancer-care data ready.

3. Online assessment (HackerRank, ~120 minutes for the new-grad variant). Two coding problems in Python or Java plus a SQL section with medium-difficulty queries (window functions, CTEs, multi-table JOINs). Reported DSA topics include arrays and hash tables, strings and recursion, and trees and linked lists.

4. Technical screen / pair programming (45 to 60 minutes). A live shared IDE with a Flatiron engineer who probes your logic and design choices, not just whether the code runs.

5. Virtual onsite (3 to 4 rounds). Coding and algorithms, a data-centric system-design round (designing clinical-data pipelines or provider dashboards with emphasis on accuracy, integrity, and security), a behavioral or mission round, and a hiring-manager or project-fit conversation.

6. Reverse interview (~30 minutes). Your chance to ask current employees about culture and the work; treat it as a real signal, not a throwaway.

Two things to internalize. First, the SQL section and the data-centric system-design round are where Flatiron diverges most from a generic tech loop, so weight your prep there rather than pure algorithm grinding. Second, the behavioral round carries real weight: interviewers reward STAR stories about learning a complex domain fast and prioritizing quality over speed, which is exactly the profile of a good oncology-data intern. Glassdoor puts average interview difficulty at 3 out of 5, with 43% rating the experience positive.

What Students on Reddit Say

Three community threads give a first-hand look at Flatiron's intern hiring, all paraphrased.

How Do You Stand Out for a Flatiron Health Internship?

Three moves, all executable during the wait. First, over-invest in SQL specifically. Flatiron weighs it more heavily than almost any tech company, so practice window functions, CTEs, multi-table JOINs, and NULL handling on deliberately messy datasets until it is second nature, because that is the skill that quietly decides the loop. Second, build one Python data project on real, imperfect data and be able to narrate it end to end: what the data was, how you cleaned it, what you found, and how you would explain it to a non-technical stakeholder, which mirrors the daily reality of talking to clinicians and clients. Third, make your "Why Flatiron?" answer specific and true. Reference OncoEMR or real-world evidence and connect it to something you actually care about, because the behavioral round genuinely penalizes generic mission answers and rewards candidates who have clearly thought about cancer-care impact. Do those three things and you arrive at the application window already looking like a Flatiron intern rather than a candidate hoping to become one.

What Other Companies Should You Consider?

Flatiron sits at the intersection of NYC tech and mission-driven healthtech, so if you are building a Summer 2027 shortlist, these are the natural neighbors that show up when candidates compare offers:

Our tech internships summer 2027 guide maps the whole landscape, timeline by timeline.

FAQ

Can I still apply for a summer 2026 Flatiron Health internship?

Almost certainly not. A Summer 2026 cohort would have recruited in late 2025 and early 2026, so those seats are filled, and as of August 2026 no internship posting is live on Flatiron's careers page. Point your energy at Summer 2027 instead: based on documented prior cohorts, expect postings to open in Fall 2026 (roughly September through January). Set alerts on flatiron.com/careers/open-positions now so you see it the day it goes live.

Does Flatiron Health offer internships?

Yes, historically. Flatiron has run paid summer internships in software engineering and data science, with Levels.fyi documenting SWE intern cohorts every summer from 2019 through 2024 and WayUp documenting a Data Insights Engineering Intern posting. As of August 2026 no internship is live; expect Summer 2027 roles to open in Fall 2026. Exact 2027 dates are NOT FOUND yet.

How much do Flatiron interns get paid?

The most recent documented Software Engineer Intern compensation (Summer 2024, Levels.fyi, community-reported) was $52.08 an hour, roughly $9,028 a month, plus a $1,500 monthly housing stipend and company-provided transportation. Earlier cohorts from 2019 to 2023 ranged $44 to $48 an hour. Data-science-specific intern pay is NOT FOUND, and the 2027 rate is not published but would be expected at or above the Summer 2024 level.

What does the interview process look like?

For the SWE track: a recruiter screen, a HackerRank online assessment (two coding problems in Python or Java plus a SQL section), a live pair-programming technical screen, then a 3 to 4 round virtual onsite covering coding, data-centric system design, and a behavioral or mission round, often ending with a reverse interview. Community reports put the total at about 3 to 5 weeks.

How important is SQL?

Very. Flatiron weighs SQL more heavily than most tech companies, with interview sources ranking it as the #2 tested area. Expect window functions, CTEs, multi-table JOINs, and NULL handling (COALESCE and ISNULL) on messy clinical datasets. Do not prep only LeetCode-style algorithms; a weak SQL round is a common reason strong coders stall here.

Is Flatiron Health part of Roche?

Yes. Roche acquired the shares it did not already own for $1.9 billion in February 2018 (it already held about 12.6%), valuing Flatiron at roughly $2.1 billion. Flatiron operates as an independent affiliate of the Roche Group, keeping its own brand, careers page, and NYC headquarters, so interns still apply through Flatiron's own site.

What GPA or major do I need?

There is no published GPA cutoff (NOT FOUND). The documented intern JD targets students in technical fields such as engineering or computer science, but it also explicitly welcomes self-taught coders and says the team can teach SQL, Python, and healthcare context. What matters most is quick-learning ability, clear communication, and a genuine interest in cancer care.

Where are the internships based?

New York City (the SoHo headquarters) is the documented location for every Software Engineer Intern cohort, with a housing stipend. One remote SWE intern cohort was documented for Summer 2022. Flatiron also has offices in Durham NC, London, Berlin, and Tokyo, but intern presence there is not confirmed, and remote availability for 2027 is NOT CONFIRMED.

Flatiron has no Summer 2027 posting live yet, but its interview rewards exactly two things you can build now: real SQL-and-Python fluency and a genuine cancer-care story. Spend the runway on both. A remote Externship turns the wait into a finished data project and a healthcare-domain story you can point at the moment a posting appears.