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Sr. Mechanical Engineer

Job in Boxborough, Middlesex County, Massachusetts, 01719, USA
Listing for: Ralliant
Full Time position
Listed on 2026-08-31
Job specializations:
  • Engineering
    Mechanical Engineer
Salary/Wage Range or Industry Benchmark: 92000 - 171000 USD Yearly USD 92000.00 171000.00 YEAR
Job Description & How to Apply Below
Location: Boxborough

At Gems Setra, we design sensing solutions that protect critical environments - clean rooms, hospitals, laboratories, data centers, and advanced HVAC systems that keep people safe and operations running flawlessly. Our mechanical sensor technologies enable precise control of pressure, airflow, temperature, and environmental conditions in the places that matter most.

We're looking for a Senior Mechanical Engineer who is passionate about building innovative, robust, and highly reliable sensors for the next generation of HVAC and environmental monitoring platforms.

About the Role:

As a Senior Mechanical Engineer in our Critical Environments product team, you’ll own the mechanical architecture and design of precision sensors used to monitor pressure, flow, temperature, humidity, and air quality parameters in mission-critical spaces.

You will work cross-functionally to ensure our designs withstand demanding environmental conditions, integrate seamlessly with electronics and firmware, and exceed our customers’ expectations for accuracy, stability, and long-term reliability.

Essential Functions:
  • Design and develop mechanical components and assemblies for HVAC and environmental monitoring sensors (pressure transducers, differential pressure sensors, flow sensors, IAQ/IEQ devices).
  • Create detailed CAD models, drawings, GD&T, material specs, and tolerance analyses optimized for accuracy and manufacturability.
  • Perform FEA and thermal analysis to validate mechanical robustness under HVAC-relevant conditions (airflow, vibration, humidity, thermal drift).
  • Lead prototyping, environmental qualification, and reliability testing (pressure cycling, humidity/condensation testing, thermal shock, leak testing).
  • Optimize sensor mechanical interfaces for easy installation in air ducts, clean rooms, mechanical rooms, and building automation systems.
  • Partner with Electrical, Firmware, Test Engineering, and Manufacturing on sensor integration and verification.
  • Drive VAVE, cost reduction, and design improvements across the product lifecycle.
  • Provide technical leadership, mentoring, and support for both NPI and sustaining engineering activities.
  • Lead and participate in DFMEA for new and existing products
  • Manage multiple small to medium sized engineering focused projects, including schedule and financial tracking
Education & Experience:
  • Bachelor’s degree with 8+years or master’s degree with 5+ years of experience in Mechanical Engineering.
  • Strong background in sensor design for HVAC, building automation, industrial, or environmental monitoring applications.
  • Proficiency in Solid Works, Creo, or equivalent CAD tools, including advanced mechanical design and GD&T.
  • Experience designing housings and sensing structures using metals, polymers, elastomers, and environmental-grade materials.
  • Strong understanding of thermal behavior, airflow dynamics, sealing, and environmental protection (IP ratings).
  • Experience designing for manufacturing methods used in HVAC/environmental sensors: machined parts, injection-molded plastics, die-cast housings, welded/brazed sensing elements.
  • Preferred: knowledge of differential pressure sensing, piezoresistive or capacitive elements, MEMS, and sensor packaging in harsh environments.
  • A collaborative mindset, strong communication skills, and a passion for building high-performance, reliable sensing products.
Ralliant Corporation Overview

Ralliant, originally part of Fortive, now stands as a bold, independent public company driving innovation at the forefront of precision technology. With a global footprint and a legacy of excellence, we empower engineers to bring next-generation breakthroughs to life - faster, smarter, and more reliably. Our high-performance instruments, sensors, and subsystems fuel mission-critical advancements across industries, enabling real-world impact where it matters most.

At Ralliant we're building the future, together with those driven to push boundaries, solve complex problems, and leave a lasting mark on the world.

About Gems Setra

Gems Setra is a leading global supplier of sensing and monitoring technologies, operating within the Precision Technologies platform of Ralliant Corporation. Through…

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