Senior Research Associate, Chemical Biology

What if… you could pioneer a new approach to designing life’s most essential molecules?

FL116, backed by Flagship Pioneering, is an early-stage biotechnology company transforming the way biomolecules are synthesized. Our innovative platform has the potential to transform how critical research, diagnostic, and therapeutic molecules are manufactured. We are seeking passionate problem solvers ready to make a profound impact on biotechnology and therapeutic innovation.

Position Summary

We are seeking a motivated, detail-oriented, and intellectually curious Research Associate or Senior Research Associate to join our Chemical Biology team. This role is centered on applying chemistry to solve complex biological problems, interrogating and controlling enzyme-driven biomolecular synthesis through a mechanistic and molecular lens.

You will execute high-throughput experiments to probe enzyme–substrate interactions, characterize biomolecule products, and contribute to the development of robust, scalable assays that power our platform. The ideal candidate appreciates the dynamic chemical nature of biological systems and is excited to manipulate and measure biology at the molecular level.

This is an exciting opportunity to build deep expertise at the interface of chemistry and biology within a fast-paced, collaborative startup environment. You are a hands-on experimentalist who thrives in execution-focused, pipeline-driven work and is eager to grow alongside a rapidly evolving technology platform.

Key Responsibilities

• Execute high-throughput experiments to characterize enzyme–substrate and enzyme–product interactions, with a focus on understanding underlying chemical mechanisms
• Apply chemical principles to modulate and interrogate protein function, reactivity, and biomolecular synthesis pathways
• Perform biomolecular product characterization using analytical and separation techniques (e.g., gel electrophoresis, TapeStation, HPLC, plate-based assays)
• Support the development, optimization, and scaling of biochemical and enzymatic assays with an emphasis on quantitative, reproducible readouts
• Generate, analyze, and interpret experimental datasets to extract mechanistic insight and inform pipeline progression
• Collaborate closely with cross-functional teams, including Enzyme Science and Assay Development, to integrate chemical insight into broader platform workflows
• Maintain rigorous experimental documentation and contribute to protocol development and knowledge sharing across the team

Qualifications

• B.S. or M.S. in Chemistry, Chemical Biology, Biochemistry, Biotechnology, or a related discipline with a strong foundation in chemical principles applied to biological systems
• 2+ years of relevant laboratory experience (industry or academic)
• Hands-on experience applying chemistry to biological systems, including enzymatic assays, biomolecule manipulation, or reaction-based workflows
• Strong foundation in protein chemistry, enzymology, or biomolecular interactions
• Proficiency in core laboratory techniques including pipetting, gel electrophoresis, and quantitative assay execution
• Demonstrated ability to generate high-quality, reproducible data and perform rigorous data analysis
• Experience working in fast-paced, collaborative laboratory environments

Preferred Qualifications

• Experience with analytical and separation techniques such as HPLC, capillary electrophoresis, TLC, or plate-based detection systems
• Exposure to bioorthogonal chemistry, chemical modification of biomolecules, or mechanistic enzymology
• Familiarity with nucleic acid or protein characterization platforms (e.g., TapeStation or similar technologies)
• Experience contributing to assay development, optimization, or high-throughput workflows
• Experience preparing samples for NMR
• Familiarity with automation platforms for high throughput screening

Who You Are

Innovative Pioneer: You are excited by the opportunity to explore new scientific frontiers and apply chemical thinking to unlock biological complexity.

Collaborative Contributor: You work effectively across teams, communicate clearly, and value shared success in a highly interdisciplinary environment.

Inventive Problem Solver: You approach challenges with curiosity and creativity, using first-principles thinking to develop elegant experimental solutions.

Mission-Driven Individual: You are motivated by the opportunity to fundamentally change how biomolecules are synthesized and to impact human health and biotechnology.

Motivated Learn