Mechanical Engineer (Aerospace Domain exp)-5

Realign Llc; Irvine (CA); On-site; USD 90,000 - 150,000; Full time

Job summary

Realign Llc is seeking a Mechanical Engineer (Aerospace Domain exp) in Irvine, CA, for a long-term contract. The role focuses on hardware and system design, environmental control architectures, and aerospace-grade testing and validation.

You will work on thermal analysis, control logic, and CAD modeling using leading tools to deliver production-ready designs while complying with MIL-STD-810 and DO-160 requirements.

Qualifications

• Experience designing ECS architectures for aerospace environments.
• Experience performing thermal and flow analysis for aerospace hardware.
• Familiarity with aerospace environmental testing standards like MIL-STD-810 and DO-160.

Responsibilities

• Design ECS architectures for aircraft environmental control systems.
• Size components and select valves, regulators, heat exchangers, and actuators.
• Model pneumatic flow, route ducts, and analyze pressure drops.
• Interface mechanical hardware with sensors and basic electronics.
• Develop and validate control loops to regulate temperature and pressure.
• Prepare test plans and review results against requirements.

Skills

ECS integration

Thermal design

Flow analysis

Control theory

CAD modeling

Tools

NX

CATIA

SolidWorks

Thermal Desktop

ANSYS Fluent

Flowmaster

Simscape

MATLAB/Simulink

Job description

Job Title: Mechanical Engineer (Aerospace Domain exp)

Location: Irvine CA 92618 (Work from Office)

Duration: Long Term Contract

Job Duties:

Hardware & System Design Skills:

• Environmental Control Systems (ECS): Designing aircraft air cycle, vapor cycle, bleed air, or cabin pressure architectures.
• Component Sizing & Selection: Calculating specifications for valves, regulators, heat exchangers, actuators, compressors, and fans.
• Fluid & Gas Dynamics: Modeling pneumatic flow rates, routing ducting networks, and analyzing system pressure drops.
• Electro-Mechanical Integration: Interfacing mechanical hardware with basic electrical circuits, wiring harnesses, and feedback sensors.

Analysis & Simulation Skills:

• Thermodynamics & Heat Transfer: Performing manual thermal math or complex 3D heat-load calculations.
• Control Theory & Logic: Developing feedback control loops to actively regulate temperature, pressure, or airflow.
• Thermal Analysis Software: Utilizing specialized simulation tools like Thermal Desktop, Ansys Fluent, Flowmaster, or Simscape.
• CAD Modeling & Drafting: Generating production-ready 3D models and technical drawings using NX, CATIA, or SolidWorks.

Testing & Compliance Skills:

• Hardware Troubleshooting: Resolving mechanical failures during the physical assembly, functional testing, or component repair phases.
• Aerospace & Defense Standards: Aligning qualification test procedures with rigorous compliance benchmarks like MIL-STD-810 and DO-160.
• Test Plan Execution: Drafting test documentation, building test setups, and analyzing environmental test data.

Core Skill Set to Look For:

• ECS Subsystem Integration: Hands‑on experience with aircraft or spacecraft bleed air, cabin pressurization, oxygen generation, or severe-environment ducting and layout.
• Thermal System Design & Analysis: Experience sizing heat exchangers, vapor cycle systems, cooling loops, or air cycle machines using software like Thermal Desktop, ANSYS Fluent, Flow master, or MATLAB/Simulink.
• Component Selection & Validation: Proven track record calculating fluid flow, pressure drop, and thermal loads to select or design valves, regulators, fans, or compressors.
• Industry Standards & Testing: Direct familiarity with aerospace/defense testing compliance, specifically DO-160, MIL-STD-810, or ARP862 for environmental control equipment.
• Cross-Functional & Control Logic: A strong understanding of structural interfaces, sensor integration, and basic control theory (e.g., feedback loops) to regulate temperatures and pressures.
• Technical Presentation & Leadership: Experience acting as a secondary project owner, leading small groups of drafters/designers, and presenting design reviews (PDR/CDR) to internal teams or customers.

Required Skills