Mechanical Engineer III

TSC is seeking a highly motivated and skilled Mechanical Design Engineer to support our customer in Washington, DC. The ideal candidate will be a hands‑on engineer with a strong background in mechanical systems and equipment, assemblies and product development. This role involves full‑lifecycle engineering, from concept development and design to prototyping, testing, integration, maintenance and sustainment of advanced systems and hardware for communication systems. You will have the opportunity to work onsite alongside other engineers and professionals at various customer locations, collaborating with multi‑disciplinary teams in a fast‑paced and challenging environment. Responsibilities Mechanical System Design & Development Design and develop robust and reliable mechanical and electromechanical systems, assemblies and components. Analyze system requirements and translate them into detailed mechanical design specifications. Create 3D CAD models, engineering drawings and manufacturing documentation. Perform tolerance analysis, material selection and design‑for‑manufacturability (DFM) assessments. Create and maintain detailed documentation for all stages of the design process. Prototyping, Testing & Troubleshooting Develop and execute comprehensive test plans for mechanical systems and assemblies. Build, assemble, and evaluate prototypes to validate designs and performance requirements. Identify, troubleshoot and resolve mechanical and system‑level issues in a timely manner, often in urgent and high‑priority scenarios. Perform root cause analysis of failures and implement corrective actions. Support environmental, vibration, thermal and functional testing activities. Integration & Sustainment Integrate new mechanical systems and components into existing platforms & infrastructure. Support fabrication, assembly, installation and maintenance activities for deployed systems. Coordinate with manufacturing, technicians, engineers and suppliers to ensure successful hardware implementation. Perform routine maintenance, upgrades and configuration improvements on mechanical and electromechanical equipment for communications equipment and antenna systems. Customer & Team Interaction Work closely with a small and highly effective team to support various customers in understanding their needs to provide technical support and meet their requirements. Collaborate with multi‑disciplinary engineering teams to ensure project success. Communicate project status and technical information effectively to peers & leadership. Required Qualifications Bachelor's degree in Mechanical Engineering, Aerospace Engineering, Manufacturing/Industrial Engineering, or a related technical field, or equivalent work experience. 5-7 years of proven experience in mechanical design and product development. Strong experience with full‑lifecycle engineering (concept development, design, prototyping, testing, integration, manufacturing support, and sustainment). Proficiency with SolidWorks 3D CAD/CAM software, etc. Experience creating technical drawings, specifications, documentation and design analyses. Hands‑on experience with fabrication, assembly, testing and troubleshooting complex mechanical systems. Strong understanding of materials, machining processes, fasteners, tolerance stack‑ups and manufacturing methods (e.g. additive manufacturing/3D printing, CNC machining, injection molding, etc.). Experience working with hand tools, power tools, precision measurement equipment and shop equipment. Excellent interpersonal and communication skills, able to interact effectively with customers and peers. Demonstrated ability to work effectively in a high‑stress, high‑speed environment. Ability to work both independently and collaboratively within a multi‑disciplinary team. Demonstrates strong initiative, self‑motivation, and a proactive approach to problem‑solving without requiring constant direction. Active DoD Secret clearance with the ability to obtain and maintain a DoD TS/SCI clearance. Ability to lift and/or move 50 pounds. In compliance with applicable pay transparency laws, the expected salary range for this position is $112,000 – $190,000 per year, depending on experience and location. This role is also eligible for an annual performance bonus and may include equity or incentive compensation as part of the total rewards package. U.S. Citizenship Required for this Position Yes Eligibility to Obtain a DoD Security Clearance Required for this Position Yes, will be required to obtain and maintain a security clearance. Travel Some (local) Relocation Assistance Available No Position Contingent Upon Award of Contract No TSC Benefits TSC offers a stable work environment, a competitive salary, and a comprehensive benefit package; including ESOP participation, 401k Plan, Flexible Work Schedules, Tuition Reimbursement, Co‑Sponsored Health Plan, Paid Leave and much more. Employment at TSC is contingent upon the successful completion of a comprehensive background check, security investigation, and a drug screening. This contractor and subcontractor shall abide by the requirements of 41 CFR 60–1.4(a), 60–300.5(a) and 60–741.5(a). These regulations prohibit discrimination against qualified individuals based on their status as protected veterans or individuals with disabilities, and prohibit discrimination against all individuals based on their race, color, religion, sex, sexual orientation, gender identity, national origin, or for inquiring about, discussing, or disclosing information about compensation. Moreover, these regulations require that covered prime contractors and subcontractors take affirmative action to employ and advance in employment individuals without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. This contractor and subcontractor shall abide by the requirements of 41 CFR 60–1.4(a), 60–300.5(a) and 60–741.5(a). These regulations prohibit discrimination against qualified individuals based on their status as protected veterans or individuals with disabilities, and prohibit discrimination against all individuals based on their race, color, religion, sex, sexual orientation, gender identity, national origin, or for inquiring about, discussing, or disclosing information about compensation. Moreover, these regulations require that covered prime contractors and subcontractors take affirmative action to employ and advance in employment individuals without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. #J-18808-Ljbffr