Sr Electro-Mechanical Assembler

Job Title: Sr Electro-Mechanical Assembler

Company: One Stop Systems, Inc. (NASDAQ: OSS)

Headquarters Location: Escondido/San Diego, CA

Employment Type: Full - Time

Work Location: On-Site

Why Join Us? At One Stop Systems, we are committed to innovation and excellence. Join our team and contribute to cutting-edge projects in a dynamic and supportive environment.

Compensation & Benefits:

• Hourly range $31 - $33
• Potential for Stock Equity
• 401K Matching
• Competitive Benefits Package including Medical, Dental, and Vision
• Three weeks of PTO
• 11 Paid Holidays

Position Overview: One Stop Systems is seeking a highly skilled and experienced Senior Electro-Mechanical Assembler to assemble complex, high-value computing and electro-mechanical systems in our Escondido manufacturing facility. 

This position requires extensive hands-on experience with precision mechanical assembly, electrical wiring, electronic component integration, and complete system builds. The ideal candidate is a technically proficient, self-sufficient assembler who can interpret engineering documentation, independently perform complex assembly operations, and identify and resolve assembly-related challenges with minimal supervision. 

Unlike traditional assembly positions focused on repetitive production tasks, this role requires the ability to work across multiple product configurations in a high-mix, low-volume manufacturing environment. 

Candidates must possess the experience and technical capability to become independently productive on assigned OSS products within approximately 2–4 weeks, following product-specific orientation, training, and qualification.

We are looking for experienced professionals who take ownership of their work, demonstrate excellent mechanical aptitude, and consistently deliver high-quality assemblies.

Reporting Relationships:

The Sr Electro-Mechanical Assembler reports to the Production Manager. 

Duties and Responsibilities:

Complex Electro-Mechanical Assembly

•  Independently assemble complex electro-mechanical systems, including ruggedized computer systems, server chassis, electronic enclosures, and custom integrated equipment.

•  Perform precision mechanical assembly involving chassis, structural components, mounting hardware, brackets, electronic assemblies, and related components.

•  Install and integrate electronic components, power supplies, printed circuit board assemblies (PCBAs), cooling systems, cables, connectors, and wiring.

•  Perform cable routing, connector installation, wire management, and electrical interconnections according to approved engineering documentation.

•  Execute complex system builds involving multiple mechanical, electrical, and electronic subassemblies.

•  Properly use hand tools, power tools, torque-controlled equipment, measuring instruments, and other manufacturing tools.

•  Maintain excellent workmanship while handling sensitive, high-value electronic components and assemblies.

Engineering Documentation and Technical Interpretation

•  Read and accurately interpret mechanical drawings, assembly drawings, bills of materials (BOMs), wiring diagrams, and manufacturing work instructions.

•  Understand component relationships, assembly sequences, mechanical tolerances, and electrical interconnections.

•  Independently organize and execute assembly operations using approved manufacturing documentation.

•  Identify and communicate discrepancies involving drawings, BOMs, component fitment, and assembly instructions.

•  Adapt to new product configurations and engineering revisions while following approved change-control procedures.

Troubleshooting and Problem-Solving

•  Identify and resolve routine mechanical assembly, component fitment, installation, and wiring issues within established procedures.

•  Recognize incorrect components, missing hardware, misaligned parts, damaged connectors, and potential assembly defects.

•  Exercise sound technical judgment in determining when issues can be resolved through approved procedures and when Engineering or Quality support is required.

•  Collaborate with Manufacturing Engineering, Design Engineering, Quality, and Production to address build challenges.

•  Proactively identify opportunities to improve assembly methods, reduce rework, and increase production efficiency.

Quality and Workmanship

•  Assemble products in accordance with engineering specifications, manufacturing procedures, customer requirements, and applicable workmanship standards.

•  Follow OSS quality management system requirements, including applicable AS9100D procedures.

•  Apply proper electrostatic discharge (ESD) protection, foreign object debris (FOD) prevention, component handling, and material traceability practices.

•  Perform in-process checks and verify assembly accuracy, completeness, and workmanship before transferring systems to subsequent manufacturing or testing operations.

•  Maintain accurate production records and document manufacturing activities, discrepancies, and inspection results as required.

•  Consistently focus on first-pass quality, minimizing defects and avoiding unnecessary rework.

Production Execution and Teamwork

•  Work independently with minimal supervision while meeting production schedules, safety requirements, and quality expectations.

•  Efficiently transition between different product configurations and assembly requirements.

•  Support prototype builds, new product introductions, and established production programs.

•  Communicate material shortages, documentation problems, assembly challenges, and production risks promptly.

•  Maintain an organized, clean, and safe work area consistent with 5S principles.

•  Assist in mentoring less-experienced assemblers and sharing established best practices when needed.

Required Qualifications:

•   Minimum 5 years of directly relevant hands-on experience in complex electro-mechanical assembly, equipment integration, or comparable technical manufacturing.

•  Demonstrated experience independently assembling complex mechanical systems incorporating electrical and electronic components.

•  Strong mechanical aptitude and proficiency in precision assembly techniques, hardware installation, alignment, fastening, and torque application.

•  Practical experience installing electronic assemblies, power supplies, wiring, cables, connectors, and other system components.

•  Ability to read and interpret mechanical drawings, BOMs, assembly instructions, and basic electrical wiring diagrams.

•  Proficiency using common mechanical assembly tools, calibrated torque tools, and measuring instruments.

•  Ability to independently plan and execute assembly activities using established work instructions and engineering documentation.

•  Demonstrated ability to identify and troubleshoot mechanical and electrical integration issues at the assembly level.

•  Experience working with complex products requiring attention to detail, consistent workmanship, and careful component handling.

•  Ability to work effectively with limited supervision, exercise sound judgment, and communicate technical issues.

•  Strong commitment to safety, quality, productivity, and accountability.

Formal engineering education is not required. Relevant hands-on experience, demonstrated technical competency, and the ability to independently build complex systems are the primary selection criteria.

Preferred Qualifications:

•  Experience assembling ruggedized servers, industrial computers, electronic systems, aerospace or defense equipment, medical devices, or similarly complex electro-mechanical products.

•  Experience in high-mix, low-volume or custom manufacturing environments.

•  Experience with complete equipment builds rather than exclusively repetitive assembly-line operations.

•  Familiarity with AS9100D, ISO 9001, or other structured manufacturing quality systems.

•  Knowledge of IPC Standards, or other relevant electronics workmanship standards.

•  Experience supporting first-article builds, prototypes, new product introductions, or engineering changes.

•  Familiarity with ERP systems, electronic work instructions, and manufacturing documentation.

•  Additional experience in cable fabrication, crimping, soldering, electrical measurement, or basic functional 

Performance Expectations

Within the First 2–4 Weeks

•  Complete required OSS safety, quality, ESD, and product-specific training.

•  Become familiar with OSS manufacturing documentation and assembly processes.

•  Demonstrate the ability to independently complete assigned assembly operations on designated OSS products with minimal supervision.

•  Produce assemblies meeting quality and workmanship expectations.

Ongoing Expectations

•  Independently execute complex electro-mechanical builds with minimal supervision.

•  Consistently meet workmanship and quality requirements while minimizing assembly defects and rework.

Physical Demands:

• Requirements include to be able to work the regular workweek of 40 hours, and to be prepared to work irregular hours for emergency production needs or problems that arise.
• Required to wear protective clothing and glasses in some areas.
• Frequently standing, sitting, walking, handling, feeling with hands, reaching with arms.
• Lifting up to 75 lbs.
• Occasional climbing, balancing, stooping, kneeling, crouching, or crawling.
• Operating around high voltage components.
• Regular communication (hearing/speaking).
• Vision requirements include close, distant, color perception, peripheral, depth and ability to focus.
• Working around moderate noise conditions.

Equal Opportunity Employer/Veterans/Disabled

An Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.