Merck Posted November 6, 2026

Senior Operations Technician (Fermentation)

De Soto, Kansas, United States of America FULL_TIME
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Merck is the source of truth for this posting and owns the application process. We surface normalized context and market comparison you won't find on the original listing.

About this opportunity

Job Description

For over 130 years, we have pioneered groundbreaking science.  Today, we are driven by continuous innovation to develop breakthrough medicines, vaccines and technology.  Rooted in direct experience on the farm and in the clinic, we work hand in hand with our customers every step of the way.

Our singular focus is to empower those who care for animals, helping them manage their vital responsibility with confidence.  Because when it comes to animal health, no one sees it like we do.

We are seeking a Growth and Improvement minded Fermentation Senior Operations Technician that can help drive our Strategic Operating Priorities.

Summary, Focus and Purpose

This Fermentation Senior Operations Technician position is available within our Antigen Manufacturing Team, at our Company's Animal Health (AH) facility in Desoto Kansas, located near the Kansas City metropolitan area. The Animal Health facility is part of the global Animal Health Manufacturing Division network and a key contributor to the manufacturing of animal health products.

We are expanding operations in the manufacturing of vaccines and biologics for large and companion animals, and leveraging an experienced and innovative team-oriented work environment using fermentation and cell culture platforms. Team members work with a "Safety First, Quality Always" mindset while striving for continuous improvement to ensure products of the highest quality, working within one of the manufacturing operation teams requires the ability to work independently while also part of a team to contribute to the daily completion and schedule adherence of production activities.

Key Functions

Work Independently and as a Team member with Integrity | Precision | Accomplishment | Motivational Ambition | Respect | Inclusion

Follow and comply with Manufacturing Directions and Standard Operating Procedures, along with applicable Corporate, Company, and Regulatory Policies

Responsible for large scale antigen production and processing in accordance with GMP (Good Manufacturing Practices)

Primary daily tasks will include aseptic material handling and culture scale up. Preparation and operation of stainless-steel fermenters and processing vessels. This position will also require supporting downstream processing steps for concentration using hollow fiber filters. Filter cleaning, including sterilization and handling of formaldehyde.

Attention to detail to achieve a consistent error-free execution of daily job tasks

Education

Required | High school diploma or GED

Preferred | Associate's degree within a science discipline or equivalent

Experience | Skills | Knowledge

Required

One (1)+ year of experience working in manufacturing environment

Good concurrent and complete documentation using Good Manufacturing Practices

Good work ethic and attendance behavior

Proficient computer skills

Principled verbal and written communications

Demonstrate basic skills in effective time management to meet given deadlines

Work effectively and efficiently both individually and with team members

Preferred

Demonstrated experience working within a GMP manufacturing environment

Good comprehension of aseptic procedures

Experience with single use gamma radiated materials

Shift and Hours

Monday to Friday | 1st Shift 7:00AM to 3:30 PM

#MSJR

The salary range for this role is: $65,100 - $102,500

This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting. An employee’s position within the salary range will be based on several factors including, but not limited to relevant education, qualifications, certifications, experience, skills, geographic location, government requirements, and business or organizational needs.

The successful candidate will be eligible for annual bonus and long-term incentive, if applicable.

We offer a comprehensive package of benefits. Available benefits include medical, dental, vision healthcare and other insurance benefits (for employee and family), retirement benefits, including 401(k), paid holidays, vacation, and compassionate and sick days.

Required Skills:

Aseptic Operations, Biological Sciences, Good Manufacturing Practices (GMP), Laboratory Processes, Media Preparation, Sterile Products, Vaccine Production

Preferred Skills:

Current Employees apply HERE

Current Contingent Workers apply HERE

US and Puerto Rico Residents Only:

Our company is committed to inclusion, ensuring that candidates can engage in a hiring process that exhibits their true capabilities. Please click here if you need an accommodation during the application or hiring process.

As an Equal Employment Opportunity Employer, we provide equal opportunities to all employees and applicants for employment and prohibit discrimination on the basis of race, color, age, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability status, or other applicable legally protected characteristics.  As a federal contractor, we comply with all affirmative action requirements for protected veterans and individuals with disabilities.  For more information about personal rights under the U.S. Equal Opportunity Employment laws, visit:

EEOC Know Your Rights

EEOC GINA Supplement​

We are proud to be a company that embraces the value of bringing together, talented, and committed people with diverse experiences, perspectives, skills and backgrounds. The fastest way to breakthrough innovation is when people with diverse ideas, broad experiences, backgrounds, and skills come together in an inclusive environment. We encourage our colleagues to respectfully challenge one another’s thinking and approach problems collectively.

Learn more about your rights, including under California, Colorado and other US State Acts

San Francisco Residents Only:  We will consider qualified applicants with arrest and conviction records for employment in compliance with the San Francisco Fair Chance Ordinance

Los Angeles Residents Only:  We will consider for employment all qualified applicants, including those with criminal histories, in a manner consistent with the requirements of applicable state and local laws, including the City of Los Angeles’ Fair Chance Initiative for Hiring Ordinance

Search Firm Representatives Please Read Carefully 

Merck & Co., Inc., Rahway, NJ, USA, also known as Merck Sharp & Dohme LLC, Rahway, NJ, USA, does not accept unsolicited assistance from search firms for employment opportunities. All CVs / resumes submitted by search firms to any employee at our company without a valid written search agreement in place for this position will be deemed the sole property of our company.  No fee will be paid in the event a candidate is hired by our company as a result of an agency referral where no pre-existing agreement is in place. Where agency agreements are in place, introductions are position specific. Please, no phone calls or emails.

Employee Status:

Regular

Relocation:

No relocation

VISA Sponsorship:

No

Travel Requirements:

No Travel Required

Flexible Work Arrangements:

Not Applicable

Shift:

1st - Day

Valid Driving License:

No

Hazardous Material(s):

n/a

Job Posting End Date:

11/16/2026 *A job posting is effective until 11:59:59PM on the day BEFORE  the listed job posting end date. Please ensure you apply to a job posting no later than the day BEFORE the job posting end date.

Requisition ID:R426200

Job details

Seniority
Senior
Function
Manufacturing & CMC
Therapeutic area
Not listed
Location
De Soto, Kansas, United States of America
Employment type
FULL_TIME

How this role compares

Computed from every other active Manufacturing & CMC role in our database, not just this employer's listings.

We currently track 632 comparable Senior Manufacturing & CMC roles across 86 biopharma companies.

632Comparable roles tracked
584Currently active
86Companies hiring similar roles
30Countries represented

Salary context

227 of 632 peers report a salary range (USD, annualized)

Peers share this role's job function and a matching or adjacent seniority level -- not necessarily the same therapeutic area or country.

This roleSubject Not listed on this posting
Lowest disclosed · Senior Technician Calibration - Maintenance · Mylan Technologies, Inc. $37,000/yr – $80,000/yr
Highest disclosed · Associate Director / Director - Biologics Drug Product Development · AbbVie $160,500/yr – $305,000/yr
Peer group range $58,500 – $232,750 (median $151,700)

Where these roles are based

Top locations among the 632 comparable roles

United States418
India44
Ireland25
Netherlands19
China12
Switzerland11

+ 24 more countries

Seniority mix

632 of 632 peers have a known seniority level

Senior402
Principal126
Associate Director104

Therapeutic area mix

2 of 632 peers have a known therapeutic area; the rest are genuinely unlabeled, not hidden

Dermatology & Aesthetics1
Vaccines & Infectious Disease1

Similar opportunities

The closest matches from our peer group, ranked by how similar they are, not how well you'd qualify for them -- treat this as market context, not a guaranteed shortlist; a weak match is labeled as one below.

60%similar
AbbVie North Chicago, IL Senior
Same function Same seniority Same country
60%similar
AbbVie North Chicago, IL Senior
Same function Same seniority Same country
60%similar
AbbVie North Chicago, IL Senior
Same function Same seniority Same country
60%similar
AbbVie North Chicago, IL Senior
Same function Same seniority Same country
60%similar
Novartis East Hanover, United States Senior
Same function Same seniority Same country
60%similar
Pfizer Andover, United States Senior
Same function Same seniority Same country

Notify me about similar jobs

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How we calculate "similar"

No black box, no LLM guesswork: a deterministic score built from four normalized attributes. Here's this role's own peer group at different match levels, so you can see the mechanism, not just the result.

Every comparison starts from the same 100-point budget: 25 for working in the same function, 40 for the same therapeutic area, 20 for the same or adjacent seniority, 15 for the same country. A dimension we can't confirm on both sides contributes nothing, never a guess, never a free pass.

60%
Senior Scientist II - Biologics Drug Product Development
AbbVie · North Chicago, IL · Senior
Function Therapeutic area Seniority Country
60%
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Function Therapeutic area Seniority Country
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Sr. Equipment Engineer
RayzeBio, Inc · Indianapolis, United States · Senior
Function Therapeutic area Seniority Country
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Senior Manufacturing Process Technician - Night Shift (12 Hour)
Amgen Inc. · New Albany, United States · Senior
Function Therapeutic area Seniority Country
Unmatched or unknown dimensions score exactly the same: 0 points, never a partial guess. A role we know almost nothing about beyond its function bottoms out at 25%; it never inflates to 100% just because there's little to compare against. Seniority uses a defined ladder (Associate → Manager → Associate Director → Senior → Principal → Director → Senior Director → Executive/VP) so "Director" and "Senior Director" count as adjacent, but "Director" and "Executive/VP" do not.