Mechanical Engineer

Hamilton Company•, VA

2d•Onsite

About The Position

As a Mechanical Engineer you will be a key member of the Engineering team responsible for designing, prototyping, and refining the mechanical architecture of Cerillo's compact microplate readers. Working closely with electrical and optical engineers, the Mechanical Engineer translates functional requirements into manufacturable designs that are precise, durable, and optimized for use in challenging laboratory environments—including anaerobic chambers, incubators, and field settings. The role spans the full product lifecycle from concept through production.

Requirements

Experience designing precision optical or electro-optical instrument housings and component mounts is strongly preferred
Familiarity with sealing and environmental protection design (IP ratings, gaskets, adhesives)
Knowledge of material selection for laboratory environments: engineering plastics, aluminum, stainless steel
Experience with DFM and working with contract manufacturers and suppliers
Strong analytical and problem-solving skills with demonstrated attention to detail
Excellent written and verbal communication skills
Ability to work independently and collaboratively in a fast-paced startup environment
Ability to lift and position equipment up to 25 pounds
Bachelor's degree in Mechanical Engineering or related field required; Master's degree preferred
2+ years of experience in mechanical product development, preferably in medical devices, scientific instrumentation, or precision hardware
Proficiency in SolidWorks (or equivalent parametric CAD) and SolidWorks PDM or similar data management tools
Strong command of GD&T and engineering drawing standards (ASME Y14.5)
Hands-on experience with prototyping methods: CNC machining, sheet metal fabrication, injection molding, and FDM/SLA 3D printing

Responsibilities

Design and develop mechanical components, assemblies, and enclosures for Cerillo's microplate reader product family using 3D CAD software
Create detailed engineering drawings with proper GD&T tolerancing in accordance with ASME Y14.5 standards
Lead prototype development including hands-on fabrication, assembly, and iterative testing of mechanical subassemblies
Define and execute mechanical testing protocols to validate structural integrity, thermal performance, sealing, and environmental robustness (e.g., ingress protection, vibration)
Collaborate with electrical and optical engineers to integrate PCB assemblies, optical paths, and illumination systems into compact, precise enclosures
Design fixtures, jigs, and tooling to support assembly, calibration, and quality control on the production floor
Drive design for manufacturability (DFM) and design for assembly (DFA), working with contract manufacturers to optimize part geometry, material selection, and tolerances for scalable production
Manage relationships with external vendors, machine shops, and injection molding suppliers; obtain and evaluate quotes and lead times
Maintain complete and accurate design documentation including SolidWorks models, drawings, BOMs, and ECOs within a PDM/PLM system
Troubleshoot mechanical issues identified during development, testing, or production; implement and document corrective design changes
Support regulatory documentation and risk management activities as required
Contribute to new product concept development and product roadmap planning
Perform ad-hoc engineering tasks as directed by the Chief Executive Officer and/or Engineering leadership