Sr. Mechanical Engineer

Ralliant

$110K — $130K *
Manufacturing & Automotive
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor’s degree in Mechanical Engineering with 8+ years or Master’s degree with 5+ years of experience.
  • Strong background in sensor design for HVAC and environmental monitoring applications.
  • Proficiency in SolidWorks, Creo, or equivalent CAD tools, with knowledge of advanced mechanical design and GD&T principles.
  • Experience in designing materials such as metals, polymers, and elastomers for housing and sensing structures.
  • Understanding of thermal behavior, airflow dynamics, and environmental protection standards (IP ratings).
  • Familiarity with manufacturing methods for HVAC sensors, including machining and injection molding.
  • Preferred knowledge in differential pressure sensing and harsh environment sensor packaging.

Responsibilities

  • Design and develop mechanical components and assemblies for HVAC and environmental monitoring sensors.
  • Create detailed CAD models, drawings, and specifications optimized for accuracy and manufacturability.
  • Perform FEA and thermal analysis to ensure mechanical robustness under HVAC conditions.
  • Lead prototyping and environmental testing to validate sensor performance and reliability.
  • Optimize sensor interfaces for installation in various settings including air ducts and cleanrooms.
  • Collaborate with cross-functional teams for sensor integration and verification efforts.
  • Drive cost reduction and design improvements across the product lifecycle.

Benefits

  • Opportunities for technical leadership and mentoring.
  • Participation in innovative product development.
  • Collaborative work environment with cross-functional teams.
  • Focus on cutting-edge HVAC and environmental technology.
Full Job Description
JOB DESCRIPTION

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, cleanrooms, 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 SolidWorks, 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.

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