Associate Engineer

Associate Engineer Associate Engineer About Contraline Inc. Contraline is a clinical-stage biotechnology company focused on innovation in male reproductive health. The company is advancing both hormonal and non-hormonal approaches to expand contraceptive options for men and couples globally. Following its recently completed Series B financing, Contraline is entering a pivotal stage of growth as it advances toward late-stage clinical development, regulatory milestones, expanded manufacturing, and future product launch.

About

the role The Associate Product Development Engineer will support the design, prototyping, testing, and refinement of implantable medical devices, delivery systems, and manufacturing fixtures. This role is ideal for an engineer who enjoys designing and building hardware, conducting laboratory experiments, and working hands-on with rapid prototyping and manufacturing equipment. Working closely with senior engineering staff, the Associate Engineer will contribute to product development through mechanical design, prototype fabrication, benchtop testing, and laboratory operations in a collaborative startup environment. This is a full‑time, on‑site position. Primary

Responsibilities Support the design and development of implantable medical devices, delivery systems, manufacturing fixtures, and laboratory tooling. Create and maintain 3D CAD models, assemblies, and engineering drawings using company drafting standards and best engineering practices. Design, fabricate, assemble, and troubleshoot prototypes using additive manufacturing, CNC machining, and other rapid prototyping methods. Plan, execute, document, and analyze benchtop experiments to evaluate device performance, manufacturing processes, and engineering concepts to support engineering decisions and process improvements. Support preclinical studies by preparing devices, fixtures, and test equipment and assisting with engineering activities before, during, and after studies. Maintain the engineering prototyping workshop, including organization, equipment maintenance, consumable inventory, calibration coordination, and implementation of safe operating practices. Operate and maintain laboratory and prototyping equipment, including 3D printers, CNC machines, laser cutters, microscopes, and other engineering equipment. Identify opportunities to improve prototype fabrication methods, laboratory organization, engineering workflows, and testing efficiency. Collaborate with Engineering, Operations, Quality, and external vendors to support successful product development activities. Support aseptic manufacturing activities for preclinical and clinical builds, including material preparation, equipment setup, process execution, and adherence to cleanroom and contamination control procedures. Assist the R&D team with broader company objectives and projects as they come up.