Top Mechanical Engineering Jobs in Seattle, WA

Designs mechanical and plumbing systems for data centers and other major construction projects. Independently drives projects through design and construction, oversees mechanical drawings and specifications, coordinates with clients, contractors, vendors, manufacturers, and multidisciplinary teams, and selects and schedules major equipment. The role also includes site observations, client meetings, mentoring junior staff, and ensuring compliance with mechanical systems and energy codes.

Senior Mechanical Engineer responsible for designing and overseeing mechanical and plumbing systems for data centers, industrial buildings, offices, and other construction projects. Duties include independently driving projects through design and construction, coordinating with clients, vendors, contractors, and multidisciplinary teams, selecting major equipment, producing drawings and specifications, and mentoring junior staff. Travel to job sites may be required for observations and client meetings.

Leads mechanical engineering and serves as Engineer of Record for complex data center projects. Designs HVAC, chilled water, and mission-critical cooling systems; reviews technical documents; coordinates multidisciplinary teams; oversees projects through construction; manages budgets and schedules; conducts equipment and energy analyses; mentors engineers; seals designs; and supports proposals and client presentations.

Leads mechanical engineering efforts for mission-critical data center projects, including new construction, expansions, retrofits, standards development, design reviews, construction support, equipment evaluations, value engineering, controls review, commissioning, and troubleshooting. Collaborates with operations teams, consultants, suppliers, construction partners, and customers. Reviews mechanical, plumbing, fire protection, HVAC controls, energy, hydraulic, and CFD analyses while supporting factory testing, site meetings, and emergency response.

Develop mechanical designs for opto-electronic devices using CREO and AutoCAD. Perform thermal, thermo-mechanical, and mechanical FEA in ANSYS, conduct FMEAs and tolerance analyses, and manage part revisions. Collaborate with design, manufacturing, quality, and vendors to validate specifications, improve manufacturability, and address complex engineering challenges in an in-person telecommunications technology environment.

Develop thermal-hydraulic models for scientific apparatus using ASME B31.3-2022 for installation at a research reactor. Perform steady-state and transient temperature modeling, work independently, and coordinate with EPC contractors and vendors on costs and budgets. The role is remote, part-time, and temporary, with at least four required site visits to State College, Pennsylvania. U.S. citizenship, background screening, drug-free status, and references are required.

Lead process engineering design and execution for mining, mineral processing, material handling, and heavy industrial facilities. Develop PFDs, P&IDs, calculations, specifications, and equipment designs; coordinate multidisciplinary teams; oversee quality, safety, commissioning, and client expectations. Support proposals, business development, client relationships, conferences, and project pursuits. Mentor engineers and establish engineering standards and best practices. Regular travel to offices, project sites, and industrial facilities is expected.

Designs and develops pharmaceutical drug-delivery devices and platforms using CAD, prototyping, testing, tolerance analysis, and Design for Manufacturing principles. Collaborates with internal teams, external consultants, CROs, and manufacturing partners to troubleshoot products, support design controls, build intellectual property, and transfer devices into production. Manages project budgets and timelines while serving as a technical resource for cross-functional teams.

Lead multidisciplinary mechanical engineering teams and multiple Justice + Civic projects, overseeing design quality, construction documents, budgets, schedules, deliverables, and client expectations. Coordinate with architects, engineers, consultants, vendors, and owners; review interdisciplinary designs; guide staff on justice facility requirements; and support business development, RFPs, client interviews, and relationship management. Apply expertise in smoke control, mechanical and plumbing systems, security integration, facility operations, building codes, and sustainable design standards.

Leads mechanical system design, structural analysis, engineering reviews, and full hardware lifecycle execution from concept through fabrication, installation, testing, and operation. Oversees engineering teams, standards, budgets, schedules, vendors, and technical documentation while collaborating with manufacturing, quality, and procurement. Supports field activities, resolves technical challenges, and mentors junior engineers. The role supports mission-critical U.S. Navy submarine weapon system research and development facilities.

Leads the design, prototyping, testing, commissioning, and continuous improvement of direct air capture process equipment and pilot plant systems. Responsibilities include CFD and FEA analysis, equipment installation and validation, test rig development, technical documentation, safety reviews, project budgeting and scheduling, vendor coordination, and oversight of junior engineers and designers.

Embed with enterprise customers to solve mechanical engineering data, integration, and workflow challenges across PLM, ERP, QMS, and design systems. Implement AI-enabled CoLab workflows, validate AI-generated engineering results, identify product gaps, and develop scalable documentation and playbooks. Partner with technical program managers, software engineers, product teams, and customer stakeholders to lead technical projects and improve engineering decision-making.

Design, build, and execute mechanical and structural test plans, develop fixtures and hydraulic test systems, integrate and calibrate sensors, automate data collection and analysis with Python, perform FEA, produce technical reports, and collaborate with cross-functional teams to validate aircraft hardware.

Own mechanical product development from concept and CAD through prototyping, qualification, and production transfer. Design rugged, safety-critical assemblies; define mechanical safety architecture; specify materials, tolerances, finishes, and fasteners; build prototypes; create manufacturing packages; execute environmental and mechanical qualification testing; and manage BOM, weight, and center-of-gravity budgets while collaborating with hardware and software engineers.

Designs industrial mechanical and building systems for fueling facilities, rail projects, tank farms, pump houses, and maintenance facilities. Develops process flow diagrams, P&IDs, equipment layouts, HVAC, and plumbing designs. Supports construction administration, plan interpretation, field observations, client interaction, and coordination of project scope, budgets, schedules, and quality standards.

Create production-ready mechanical designs using SolidWorks, including 3D CAD models, technical drawings, dimensions, tolerances, and manufacturing specifications. Revise designs, reverse engineer products, assess materials and manufacturability, calculate mass, and identify design risks. Develop engineering improvements, maintain accurate documentation, support multiple projects, and meet deadlines while working independently with US-based engineering teams.

Supports mechanical engineering for data center facilities, including hardware design, control sequence programming, troubleshooting, repairs, documentation, and stakeholder updates. Collaborates with cross-functional teams to maintain reliable infrastructure operations and applies knowledge of mechanical systems, thermodynamics, CAD, and CFD. The remote role includes occasional data center visits, approximately 10% travel, and occasional work outside normal business hours.

Design and develop mechanical systems, machinery, industrial infrastructure, fluid power systems, piping, pumps, and bulk material handling equipment. Perform force, stress, kinematic, dynamic, and finite element analyses; design weldments and machinery components; and produce models, assemblies, and drawings in SolidWorks. Collaborate with project teams and clients, support project engineering and management, and conduct occasional field observations at project sites.

Design and analyze mechanical systems for heavy civil, industrial, waterfront, transportation, and material-handling projects. Responsibilities include machine and weldment design, stress and fatigue analysis, FEA, hydraulic and piping systems, pumps, motors, controls, and project engineering or management. The engineer will collaborate with multidisciplinary teams and clients, produce SolidWorks designs and drawings, support field observations, and contribute throughout project development and delivery.

Performs piping flexibility and stress analysis, pipe support design, finite element analysis, and static equipment design for oil, gas, and LNG projects. Prepares calculations, drawings, specifications, bid evaluations, and technical documentation. Reviews supplier data, coordinates with multidisciplinary project teams, directs designers and drafters, and provides field verification and mechanical execution support.

Designs and tests complex industrial machinery for aseptic manufacturing processes. Responsibilities include conceptual and detailed mechanical design, 2D/3D modeling, engineering analysis, risk mitigation, documentation, machine testing, design reviews, customer-site installation and startup, and serving as Engineer in Charge on medium to large projects.

Lead end-to-end mechanical design and manufacturing for TCA rocket engine components. Drive DFM-focused design, tooling and fixture creation, implement advanced fabrication (additive, CNC, EDM, specialized joining), develop process parameters, and plan/execute hotfire test campaigns with analysis and rapid redesign for flight qualification.

Own the end-to-end design, analysis, testing, qualification, and flight integration of deployable spacecraft radiator panels and mechanisms. Responsibilities include structural and thermal design, deployment kinematics, mechanism reliability, manufacturing integration, CAD and FEA, ground testbed development, qualification testing, anomaly resolution, and cross-functional spacecraft integration.

Own the design and lifecycle of spacecraft liquid cooling loops for GPU compute hardware. Responsibilities include fluid-system analysis, component sizing, mechanical packaging, ground testbed development, qualification testing, documentation, supplier coordination, anomaly resolution, and cross-functional spacecraft integration. The role requires hands-on hardware development from concept through flight and expertise in fluids, thermal systems, mechanical design, and space-environment qualification.

Design and own optical satellite mechanical, electro-mechanical, structural, actuator, and precision pointing hardware from concept through production, environmental testing, launch, and on-orbit operation. Responsibilities include CAD and GD&T, structural and finite element analysis, electronics integration, design for manufacturability, factory support, root-cause investigations, and cross-functional delivery of laser communication and imaging payloads.