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About TSR:

TSR is a relationship-based, customer-focused IT and technical services staffing company.

For over 40 years TSR, Inc. and its wholly owned subsidiary, TSR Consulting Services, have prospered in the Information Technology staffing business, earning the respect of companies both large and small with well refined candidate screening, timely placement, and a real understanding of the right skill sets required by our clients.

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We do not believe in building a vision around the company but building a company around our vision, which is simply;

Every employee’s voice matters, their effort is appreciated, and their talent is rewarded.

We challenge each employee daily, to raise the bar on how we treat our consultants and candidates. For far too long in this industry, candidates have been ghosted, lied to, or placed at a client and then forgotten about. Each day our staff works tirelessly at qualifying and placing, top talent with our clients, in a compassionate and caring manner.

Not every candidate is a match for the job, but every candidate and consultant will be treated with respect and professionalism.

Research Associate

Job Description

  • Location: Cambridge, MA
  • Type: Contract
  • Job #70926

Our client, a leading pharmaceutical company, is hiring a Research Associate on a contract basis.

Work Location

Cambridge, MA


We are seeking a scientist with relevant cell culture and protein expression experience to join the Protein Science group in the Discovery Biotherapeutics department at our new state-of-the-art facility in Cambridge, MA. The qualified candidate will be responsible for mammalian expression of proteins in shake flasks and will play a role in support of the biotherapeutic discovery efforts at client.


The Discovery Biotherapeutics group supports programs across all client therapeutic areas including Oncology, Immunoscience, Cardiovascular, and Fibrosis. Group activities comprise of protein expression, purification and characterization making use of high throughput methods and automation to enhance productivity where possible.


Position Responsibilities:

• Effectively perform mammalian protein expression in shake flasks using transient transfection cell lines (Expi293, ExpiCHO)

• Antibody quantitation using Octet and Blitz

• Harvest of cell culture using filtration and centrifugation

• Routine maintenance and cell banking of HEK and CHO cells

• Expansion and banking of cell lines for screening antibodies

• Maintenance of Biacore SPR instruments if needed

• Ensure accurate registration of protein lots and associated data into LIMS (Genedata).

• Maintain a complete and current Electronic Laboratory Notebook.

• Opportunity to collaborate in multi-disciplinary drug discovery teams

• Communicate results both written and verbally within working group.



• Candidate should have or be currently enrolled in a B.S. program in Biology, Engineering, or a related field preferably with at least 1 year of relevant experience in an academic or industry setting.

• Experience with Mammalian cell culture and aseptic technique is desirable.

• Familiarity with Genedata and ELN is a plus.

• Must be detail oriented and able to follow protocols effectively

• Excellent time management skills and a demonstrated ability to work in a team environment

• Excellent interpersonal and communication skills along with a sense of urgency and ability to work under tight deadlines.

• Proficient in Microsoft Excel, Word, and PowerPoint



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