Spear Bio, founded in 2021, is a well-funded and rapidly growing biotech start-up headquartered in Woburn, Massachusetts.  Our proprietary technology, Successive Proximity Extension Amplification Reaction (SPEAR), is a novel wash-free immunoassay platform, offering unprecedented sensitivity. We are dedicated to revolutionizing early disease diagnosis and monitoring by providing scalable, ultrasensitive solutions that deliver unparalleled accuracy in measuring low-abundant biomarkers, enabling clinicians and researchers to improve patient outcomes and advance global health.

Scientist/Senior Scientist, Assay Development - Molecular Assay Chemistry and Biophysics

Our Assay Development team builds assays for low-abundance protein biomarkers that are challenging to measure using conventional approaches. We are seeking a creative, hands-on scientist with strong fundamentals in chemistry, biophysics, and molecular interactions who enjoys solving difficult technical problems from first principles.

The Scientist / Senior Scientist will design, optimize, and troubleshoot innovative protein-detection assays that integrate antibody-based recognition, nucleic-acid interactions, conjugation chemistry, reaction kinetics, and quantitative analytical methods.

We are looking for a scientist who genuinely enjoys troubleshooting. The i