To our valued Leidos candidates:

Coronavirus is on everyone's mind with the effects being felt around the world. The markets are volatile, and we're all concerned for the health and safety of our families, friends, and colleagues. Please know that we're taking all necessary measures to safeguard our employees, customers and the communities in which we live, including following all recommended best practices around social distancing.

With that in mind, in an abundance of caution, we are canceling all face to face career events, such as job fairs and open house events. In the coming days and weeks, we will be hosting career events virtually, using our online chat tools so that we may continue our hiring practice safely and securely. You can find available virtual career events at

We are using telephone meetings and online chats via Brazen to conduct interviews and hiring discussions, and we are offering options for video interviews so that you can have a virtual face to face meeting with your potential new leader. We do not conduct interviews or extend offers via text or chat based social media, such as WhatsApp or MySpace.

Leidos will never ask you to provide payment-related information at any part of the employment application process, nor will Leidos ever advance money as part of the hiring process. And Leidos will communicate with you only through emails that are generated by automated system. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to Chris Scalia, Leidos’ Senior Vice President of Talent Acquisition, at [email protected].

As a company, as a country, as a world, we have confronted challenging moments before. We are confident that, guided by our values and the strength of our community as well as the commitment we have to the important work we do each day, we will find our way through this time together. We will do this with the care and concern for one another and the common good that defines. Please keep those impacted by the virus in your thoughts.

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Job #: R-00012380
Location: Silver Spring, MD
Category: Research Scientist
Schedule (FT/PT): Full Time
Travel Required: No
Shift: Day
Potential for Telework: No
Clearance Required: NACI
Referral Eligibility: Ineligible
Group: Health

This job posting is no longer active.

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Job Requisition:

Lead Purification Specialist

Job Description:

Leidos is seeking a Purification Specialist who will lead a purification team at a manufacturing facility in Silver Spring, MD. S/he will perform duties associated with the design, start-up, evaluation, validation, and maintenance of purification systems as they are applied to the downstream processing of proteins and products derived from prokaryotic and eukaryotic cells. Fermentation harvests will be processed and purified so that end products can be used for human vaccines and biological products.

This position is contingent upon contract award.


  • Supports successful implementation of new products and processes into the facility.
  • Assist with technology transfer from Process Development to manufacturing environment.
  • Plan, order and account for consumption of raw materials and components.
  • Prepare equipment and supplies for use in cleanroom environment.
  • Prepare and maintain reports and other documentation as applicable to the scope of operations in the manufacturing facility.
  • Prepare and revise batch records and standard operating procedures (SOPs), as well as draft technical reports.
  • Coordinate sample testing and room release with QA/QC.
  • Assist in the installation, maintenance, cleaning and operation of bioprocess equipment including chromatography systems, TFF systems, centrifuges, analytical equipment, and clean-in-place skids.
  • Ensures that SOPs and batch records are accurate, and followed in accordance with cGMP regulatory expectations.
  • Conducts purification operations with an excellent understanding and knowledge of isolating and purifying proteins, antibodies, etc. from microbial and cell culture processes.
  • Operate bioprocess equipment under strict adherence to cGMP, OSHA, and required policies and regulations.
  • Recognizes and escalates bioprocess operational risks to team lead or Manager prior to failure, to ensure safety and compliance requirements.
  • Recommends and executes projects and changes to bioprocess operations to reduce risk and increase efficiency.
  • Performs in-process assays to monitor process performance.
  • Responsible basic trouble-shooting of technical issues and other problems encountered within the manufacturing process. Write deviation incident reports as needed.
  • Carry out the manufacturing review (as delegated) of the completed batch record and/or logbooks in a timely manner per established targets.
  • Collaborate with the QA to fulfill quality management goals and ensure the highest quality manufacturing processes. Participates in QA training programs as required.
  • Identify areas for improvement in manufacturing efficiencies and compliance.
    Assists with process, equipment, and cleaning validation initiatives.
  • Trains, coaches, and mentors manufacturing associates on downstream manufacturing functions, including compliance on all company/regulatory quality systems, safety procedures, and SOPs.
  • Maintain a safe workplace ensuring that he/she is aware of and observes appropriate safety and occupational health rules and regulations.
  • Employee is required to attend safety training relative to his/her position and report any infractions of safety procedures to the facility Safety Officer
  • Ensure high standards of cGMP are adhered to at all times


  • BS with a minimum of 4 years of experience in protein purification and protein chemistry (or MS with 3 years of experience) with increasing responsibilities; preferably a manager-level position
  • Must also have four years of managerial/supervisory experience.
  • Experience with cGMP and down-stream processing of biologicals.
  • Experience in HPLC protein purification methods.
  • Experience in column packing and chromatography (HIC, IEX, Affinity)
  • Experience with processes including cell disruption.
  • Experience in operation and maintenance of tangential flow filtration devices, UF/DF operations, and aseptic filtration
  • Proficiency in technical writing of SOPs, development and validation reports
  • Current documented training in GMP regulations, preferred
  • All proposed personnel to perform services contractor must verify employment eligibility (E-Verify) and obtain a favorable National Agency Check (NACI).

External Referral Bonus:


Potential for Telework:


Clearance Level Required:




Scheduled Weekly Hours:




Requisition Category:


Job Family:

Research Scientist




Leidos is a Fortune 500® information technology, engineering, and science solutions and services leader working to solve the world's toughest challenges in the defense, intelligence, homeland security, civil, and health markets. The company's 33,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $10.19 billion for the fiscal year ended December 28, 2018. For more information, visit

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [email protected].

Commitment to Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

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