Senior Research Associate, Early Development

Apr 5, 2024

Join the revolution in cancer early detection at Mercy Bio. We’re a pre-commercial biotechnology company on a mission to transform the future of healthcare by uncovering cancer’s hidden biology. With a commitment to accessibility and equity, we’re dedicated to making high performing blood-based cancer screening solutions that are available to all who need them. Be part of a fast-paced team with a focus on collaboration on our quest to conquer cancer care – join us in making a meaningful difference.

We are looking for a Senior Research Associate to join our team.  This individual will be tasked with the design, execution, and analysis of experiments to drive early development of our cancer screening test portfolio. This role will include assay optimization, analyte and reagent characterization, and novel assay development.



  • Design and execute scientific experiments to support novel immunoassay development. Leverage platforms including our proprietary Mercy Halo assay, ELISA, flow cytometry and western blot to support early development activities including biomarker characterization and reagent screening / optimization
  • Execute the Mercy Halo assay in large clinical studies, small-scale optimization studies, and conduct other associated experiments
  • Work within cross-functional teams to support research and development efforts across the organization and with external collaborators
  • Perform routine laboratory duties, such as preparing reagents, maintaining laboratory equipment, and keeping the laboratory clean and organized consistent with 5S principles
  • Develop and maintain good laboratory practices to govern the activities within the laboratory
  • Help write and review Technical Protocols, and Standard Operating Procedures, as well as maintain accurate records of experiments in line with Quality Management System requirements
  • Stay informed on the research being performed in other groups at Mercy to minimize redundancy and maximize opportunities for synergy
  • Participate in internal scientific meetings to discuss project progress, review data, and identify assay optimization opportunities
  • Stay current with the liquid biopsy and early cancer detection literature
  • Actively participate in the ideation of improved methods, workflows, and reagent manufacturing processes
  • Communicate regularly with supervisor and broader early development team to relay experiment results and data analysis



  • BSc/MS life science degree
  • Minimum 2+ years of laboratory experience in assay or product development in a biotech or pharma setting is required
  • Proficiency with standard cellular and molecular biology techniques including gel electrophoresis, western blot, ELISA, flow cytometry, chromatography (size exclusion, ion-exchange), and qPCR is required
  • Familiarity with protein bioconjugation techniques and bioconjugate purification methods is a plus
  • Experience with automated liquid handling is a plus
  • Proficiency in collecting and accurately documenting experimental procedures and results is essential. Familiarity with electronic lab notebook (ELN) or laboratory information management systems (LIMS) is  preferred
  • Proficiency in software applications like Microsoft Word, Excel, PowerPoint and GraphPad Prism is required
  • Ability to follow established controlled documentation with strict attention to detail and work effectively and efficiently with other team members is essential.


Candidates for this position must enjoy working for a fast-paced, cutting-edge company and demonstrate exemplary team capabilities and a passion for contributing to our life-saving mission.


Hiring Manager: Senior Scientist

Location: On-site – Waltham, MA

Status: Full Time

Job ID: ED003


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