Fieldstone Bio
Senior/Principal Scientist, Synthetic Biology
Woburn, MA
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- Seniority
- Lead / management
- Country
- US
- Work mode
- On-site / unstated
- First seen by hirly
- 28 Sept 2026
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the posting
About the company
Fieldstone Bio is an early-stage synthetic biology company focused on environmental monitoring. Our technology, which originated at MIT, combines microbiology, synthetic biology, artificial intelligence, and advanced imagery to solve key challenges in mining, pollution surveillance, and national security.
Position summary
Fieldstone Bio is looking for a highly motivated Senior Scientist or Principal Scientist to join our growing Synthetic Biology team, where they will work to design, build, and test microbial biosensors for function in lab-, soil-, water-, and rock-based environments. Target molecules for these biosensors will include metals (for mining applications) and small molecules relevant to Fieldstone’s ongoing and future programs. This role will drive development of biosensors for small molecules with no known regulators, requiring expertise in transcriptomics-based approaches and/or experience in protein engineering and directed evolution. A successful candidate will independently contribute to sensor design, construction, and testing, leveraging synthetic biology expertise to identify the genetic parts and microbial chassis most suited for the program. This is a lab-based role that will work collaboratively with the company’s Microbiology team and AI Data team. This role provides a unique opportunity to impact the development of research and development strategies at an early-stage biotechnology company. This role is on-site and located in Woburn, MA.
Key Responsibilities:
Design, build, and test microbial biosensors for target molecules of interest
Develop biosensors for target molecules with no known regulators using RNA-sequencing and genome-mining approaches
Improve existing biosensors via protein engineering, directed evolution, and screening-based approaches
Collaborate with Microbiology team to identify synthetic biology solutions to support successful biosensor deployment in the target environment
Interface with leadership team to refine select program’s technical strategies
Ensure timely delivery of goals for set milestones
Clearly present scientific findings in cross-functional project team meetings
Document processes, SOPs, and results in an Electronic Lab Notebook (ELN) system
Qualifications:
Ph.D. (or equivalent) in Bioengineering, Chemical Engineering, Microbiology (or related field) and a minimum of 2+ years of industry experience
Demonstrated success in microbial engineering with a proven track record of sensor development, preferably with experience engineering microbes for function outside of a lab environment
Expertise in DNA design and assembly of complex plasmids
Depth of knowledge of current technologies used for identifying and screening novel microbial biosensors, including transcriptomics- and bioinformatics-based approaches
Experience with engineering non-model microbes and engineering microbes for function in complex non-lab environments is a plus
Strong analytical and problem-solving skills and outside-of-the-box thinking
Ability to work independently and manage multiple tasks simultaneously
Excellent verbal and written communication
Versatile and flexible scientist who thrives in a fast-paced and collaborative lab environment
Fieldstone Bio is committed to building a diverse and inclusive environment. All applicants will be considered without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status or disability.
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