Milliman Data Science Interview Questions and Answers (2026 Guide)

Quick answer: Milliman is a global actuarial and risk-consulting firm founded in 1947, and its data and technology hiring in India runs mainly out of Gurgaon (Delhi NCR), alongside offices in Mumbai and New Delhi. Verified India-specific candidate accounts are thin, and neither of the two we found confirms it was a data role rather than an actuarial or generalist hire. What is well documented is Milliman's general interview pattern on Glassdoor, a specific Actuarial Analyst process, and a one-way recorded video-interview format used for at least one data-adjacent role, so we present those honestly alongside the gap.

About Milliman

Milliman, Inc. is an independent actuarial and management-consulting firm founded in 1947 by Wendell Milliman and Stuart A. Robertson, headquartered in Seattle, with more than 3,000 employees across 59 offices worldwide and roughly 350 principals who own and manage the firm. (Wikipedia) Its practice areas span employee benefits, healthcare, life insurance, property and casualty insurance, investment, and data analytics and predictive modelling, and it publishes indices such as the Milliman Medical Index. In India, Milliman operates offices in Mumbai and New Delhi, working on health insurance, employee benefits, life insurance, embedded valuation and data analytics for global clients, and India-based leadership also runs parts of MedInsight, Milliman's healthcare-analytics platform used by more than 300 organisations worldwide. (Milliman India) Live job postings placed directly by Milliman show active Gurgaon hiring for Trainee Data Engineer, Data Solutions Engineer and Senior Data Engineer roles on the MedInsight team, working with SQL, Python, ETL pipelines and Azure. (JobInsider; Foundit)

Milliman's Interview Process

• General pattern, Glassdoor's aggregate across all roles (294 submitted interviews, mostly US-weighted): 56.8% of candidates report a positive experience, difficulty is rated 2.91 out of 5, and the average hiring process takes about 21 days. (Glassdoor)

• Actuarial Analyst track specifically: a recruiter phone screen covering resume and behavioural questions, further rounds with senior actuaries, an HR screening step, an Excel assessment, and for some candidates a "superday" of three back-to-back interviews; reported assessments include a programming-knowledge test and a proxy-IQ test. Rated 3.2 out of 5 for difficulty, 60% positive, averaging 16 days to hire. (Glassdoor)

• Healthcare Data Analyst hiring is reported to include a one-way, pre-recorded video interview: ten questions answered on webcam through a web app, up to three attempts per question, with the introduction re-recordable but later answers not, and no live technical questions at that particular stage. (Glassdoor)

• Two India-specific candidate accounts on Glassdoor: one from Gurgaon (March 2023) describes finishing a first round, a second round and a managerial round, then getting no further communication and an unresponsive HR team; another from Mumbai (January 2023) describes a single round, described as easy and comfortable, covering basic questions, technical questions and background discussion. Neither account states the job title interviewed for. (Glassdoor India)

What Candidates Report

Beyond process structure, recurring technical themes across Milliman's own current job postings and third-party interview guides for data roles include R, Python and SQL, comfort with healthcare claims data specifically, data modelling, and machine-learning fundamentals; guide sites such as InterviewQuery list Data Scientist, Data Analyst, Data Engineer and Business Intelligence as separate tracks, which lines up with the specialised, healthcare-heavy hiring visible in live Gurgaon job postings. On Blind, employees rate the company 3.5 out of 5 overall, with career growth (3.4) ahead of management (3.1), and some reviewers note that at an actuarial-first firm, software and data engineering can feel secondary to the core actuarial practice. (Blind)

What We Could Not Verify

We found no detailed, dated, question-by-question account of a Milliman Data Scientist or Data Analyst interview loop specifically in India. The two India candidate accounts we found, from Gurgaon and Mumbai, do not state a job title, so we cannot confirm either was a data role rather than an actuarial or generalist hire, and we are not presenting them as data-role-specific. AmbitionBox and Naukri returned nothing usable for this research pass, and Glassdoor's India-specific interview page could not be fetched directly, only read via search-indexed summaries, so some detail above reflects paraphrase rather than primary review text.

How to Prepare

• Revise core SQL and Python, including joins, aggregations and basic data-wrangling, since these appear across every Milliman data-role guide and job posting we found.

• Get comfortable discussing healthcare or insurance claims data specifically, since MedInsight and Milliman's core practices are healthcare- and insurance-analytics heavy.

• Prepare for a possible one-way recorded video round early in the process, and rehearse concise, timed answers, since re-recording is reported to be restricted after the introduction.

• If interviewing for an actuarial-adjacent analytics role, brush up on Excel modelling and basic programming-logic tests, both specifically reported for Milliman's Actuarial Analyst hiring.