Merck's hiring loop is a fairly standard big-pharma funnel: an application review, an HR/recruiter phone screen, one or more hiring-manager conversations, then a panel or a series of team interviews, plus a presentation or technical assessment for scientific, clinical and data roles. Candidates repeatedly describe long silences between stages, a candidate questionnaire sent through Workday after later rounds, and timelines that stretch to two months or more. Format and specifics vary by function and site (Rahway/Cambridge R&D, West Point/Dunboyne manufacturing, GCTO clinical operations, Philippines shared-services, India tech via MSD).
These 12 writeups cover software engineering, r and d scientist, clinical research and other roles, US + India MSD + Ireland + Philippines. All of them were posted under a forum handle, so we could not verify the authors’ identities.
unknown. 3 rounds. Shared by jonnycoder on hn, 2025-09-12
1First interviewHiring managerInitial conversation with a scientist hiring manager that went well.
2Take-home assignmentTake-homeMulti-part assignment whose second part asked to decode binary data at three difficulty levels. Took about forty hours.Covered: Binary data decoding, Problem solving
3Second interviewTechnicalAsked how the user interface would be designed. The manager ended the call after the answer.Covered: UI design
1Technical online assessmentOnline assessmentA take-home-style technical assessment covering data-engineering fundamentals. The candidate finished it in a single sitting before the live interviews were scheduled.Covered: SQL, Python
2Round 2-N: Live technical interviewsTechnicalA sequence of live technical rounds focused on Python, SQL, PySpark, Databricks and AWS. The candidate describes the loop as heavier on hands-on data-engineering skills than on abstract system design.Covered: Python, SQL, PySpark, API design
Data Science Business Analyst Intern (US)
Outcome not shared
Internship. 2 rounds. Shared by u/No-Yam4190 on reddit, 2025-02-28
1Data science interviewHiring managerThe candidate applied on 23 December, was invited to interview on 31 January with an Associate Director of Data Science who walked through their work experience and asked product-management-style questions rooted in the candidate's MS curriculum.Covered: Past projects, Resume deep-dive
2Technical / oncology domain interviewTechnicalA follow-up interview two weeks later on 13 February with the Technical Head of Oncology Data Science, focused on the candidate's technical background and fit for the team.Covered: Domain knowledge, Past projects
1HR phone interviewPhone screenInitial recruiter phone screen on 4 June to walk through the role and the candidate's background.Covered: Resume deep-dive
2Hiring managerHiring managerA hiring-manager conversation six days after the HR screen.Covered: Past projects, Behavioral
3On-site interviewPanelAn on-site interview at the Cambridge site two days after the hiring-manager call, with multiple team members.Covered: Past projects, Behavioral
4Senior leadership interviewFinalA final senior/leadership interview three days after the on-site, closing out the loop.Covered: Behavioral
5Workday candidate questionnaireAssessment centreAfter the leadership call, the candidate was sent a Workday candidate questionnaire to complete before a decision, then waited on the hiring manager for next steps.Covered: Behavioral
1Round N: Executive Director interviewFinalA late-stage Executive-Director-level interview after the earlier hiring-manager and panel rounds. The candidate notes that only a small handful of finalists typically reach this ED step and that the decision is made internally in the days that follow.Covered: Leadership Principles, Past projects
Full-time role (unspecified function)
Received an offer
Experienced, Full-time offer initially, then downgraded to contract-only. 2 rounds. Shared by u/Effective-Pie3894 on reddit, 2025-09-19
1Round 1-N: Full interview loopPanelThe candidate went through the full Merck interview loop and was verbally hired for a full-time role, on the strength of which they turned down two other offers.Covered: Behavioral, Past projects
2Post-offer: Offer rescission and rescopeFinalTwo days after the offer, Merck came back and said only a contract role (with a possible later conversion to permanent) was available. A cautionary data point about not letting go of other offers until the paperwork is signed.Covered: Behavioral
Corporate/shared-services role (Merck Philippines / Merck Business Solutions)
1Initial screeningPhone screenA first-pass screening with the recruitment team the week prior to the hiring-manager round.Covered: Resume deep-dive
2Level 1 with hiring managerHiring managerThe first substantive interview with the direct hiring manager, focused on background fit for the role.Covered: Past projects, Behavioral
3Level 2 with the HeadFinalA Level-2 interview with the department Head, scheduled the day after the Level-1 endorsement. The Philippines process is described as moving quickly through the tiered levels.Covered: Behavioral, Domain knowledge
Experienced. 1 round. Shared by u/Odd_Ad6027 on reddit, 2022-09-29
1Presentation interviewPresentationThe candidate was asked to prepare a 5-7 minute PowerPoint covering what inspired them to apply to the CTC role and highlighting projects that showcased skills and abilities relevant to a Clinical Trial Coordinator: study coordination, cross-functional coordination and clinical-operations exposure.Covered: Presentation, Past projects, Domain knowledge
1Round 1 and 2: Two 30-minute conversationsHiring managerTwo back-to-back 30-minute interviews with different Merck interviewers, described as the full interview loop for a summer internship.Covered: Resume deep-dive, Behavioral
Experienced role after HM interview + candidate questionnaire
Outcome not shared
Experienced. 2 rounds. Shared by u/No-Towel4000 on reddit, 2025-05-29
1Virtual panel interviewPanelA virtual panel interview earlier in the month with multiple interviewers assessing fit for the role.Covered: Past projects, Behavioral
2Candidate questionnaireAssessment centreAbout two weeks after the panel, the candidate was sent a Workday-tracked candidate questionnaire, which they note is Merck-specific: they had interviewed at Takeda and previously worked at Novartis and never seen the same after an HM interview.Covered: Behavioral
Experienced role (function unspecified, likely R&D/clinical)
1Phone screenPhone screenAn initial recruiter phone screen against the role's basic requirements.Covered: Resume deep-dive
2Virtual interview 1Hiring managerFirst of two virtual interviews after the phone screen, hiring-manager-led.Covered: Past projects, Behavioral
3Virtual interview 2PanelSecond virtual interview with additional team members.Covered: Past projects, Behavioral
4Candidate questionnaires x2Assessment centreTwo separate candidate questionnaires were sent post-interview for the candidate to fill in. After roughly 1.5 months of silence, the candidate learned the division was reorganising and the role would be reposted.Covered: Behavioral
Experienced role (function unspecified)
Outcome not shared
Experienced. 3 rounds. Shared by u/Spirited_Ad_9585 on reddit, 2025-03-26
1HR interviewPhone screenAn initial HR conversation about the role and the candidate's background.Covered: Resume deep-dive, Behavioral
2Hiring managerHiring managerA follow-up conversation with the hiring manager shortly after the HR screen. The manager gave positive feedback on the candidate's experience and questions asked.Covered: Past projects, Behavioral
3Panel interview (scheduled)PanelA panel interview was flagged by the hiring manager as the next step. The candidate confirms Merck's loops for experienced roles typically include this team panel round after the HM conversation.Covered: Past projects, Behavioral
What Merck is hiring for now
921 open roles in our index. Advertised pay floors run $58k to $129k (median $86k, from 262 postings that state pay).
Most-posted roles
Megasys Technician10
Packaging Operator 1-12 Hr Night Shift5
Associate Production Scientist - 12 Hour Night Shift4
Merck's hiring loop is a fairly standard big-pharma funnel: an application review, an HR/recruiter phone screen, one or more hiring-manager conversations, then a panel or a series of team interviews, plus a presentation or technical assessment for scientific, clinical and data roles. Candidates repeatedly describe long silences between stages, a candidate questionnaire sent through Workday after later rounds, and timelines that stretch to two months or more. Format and specifics vary by function and site (Rahway/Cambridge R&D, West Point/Dunboyne manufacturing, GCTO clinical operations, Philippines shared-services, India tech via MSD).
What topics does Merck test in interviews?
Commonly reported topics include Binary data decoding, Problem solving, UI design, Behavioral, STAR stories, Past projects.
These guides summarize public, first-hand interview experiences shared by candidates. They describe the shape of each loop and the topics that came up, not a leaked question bank, and every experience links back to its original source. Processes change often. Treat this as directional prep, not a script.
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