DFA Engineer

Posted Yesterday
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San Jose, CA, USA
In-Office
75K-120K Annually
Senior level
Hardware • Manufacturing
PCB design, fab & assembly in Silicon Valley for quick-turn high-reliability prototypes
The Role
Develops and optimizes SMT assembly processes and PCB designs for manufacturability. Responsibilities include DFA/DFM analysis, stencil and reflow process development, SMT equipment support, troubleshooting, yield improvement, Lean initiatives, manufacturing documentation, quality investigations, and cross-functional collaboration. The role also supports audits, equipment selection, process instructions, and assembly management while working in a clean manufacturing environment.
Summary Generated by Built In

ABOUT THE COMPANY: 

Sierra Circuits is a Silicon Valley-based leader in printed circuit board manufacturing and assembly, specializing in high-quality, quick-turn and complex prototypes. With over 35 years of experience, Sierra provides a seamless, end-to-end PCB solution—from design and fabrication to assembly and testing—all under one roof at its state-of-the-art facilities in Sunnyvale, California. Sierra Circuits is committed to supporting engineers and designers through extensive educational resources. The company offers free online tools such as the Stackup Designer, Impedance Calculator, Material Selector, and BOM and DFM Checkers, along with technical blogs, webinars, design guides, and its SierraConnect community forum. Sierra Circuit serves all industries including aerospace, defense, medical, automotive, and telecommunications, building PCBs to the highest industry standards, and keeping innovation at the forefront of everything we do.


SUMMARY OF JOB FUNCTION: 

We are seeking an experienced SMT DFA (Surface Mount Technology Design for Assembly) Engineer to join Sierra Circuit manufacturing team. In this role, you will work closely with design, process, and manufacturing teams to ensure the seamless assembly of printed circuit boards (PCBs) while optimizing product designs for manufacturability. You will be responsible for driving continuous improvements in SMT assembly processes, resolving technical challenges, and ensuring high-quality, cost-effective production.


RESPONSIBILITIES AND ESSENTIAL JOB FUNCTIONS: 

  • Design for Assembly (DFA): Analyze PCB designs and provide feedback to improve manufacturability and efficiency during SMT production. Collaborate with design engineers to optimize component placements, solder joints, and assembly processes.
  • SMT Process Development: Develop, optimize, and maintain SMT assembly processes including stencil design, solder paste application, component placement, and reflow soldering to ensure high-quality output.
  • Manufacturing Support: Provide technical support and troubleshooting for SMT assembly lines. Collaborate with production teams to identify and resolve issues related to assembly defects, component fit, or solderability.
  • Continuous Improvement: Lead initiatives for process improvements, yield enhancement, and cycle time reduction in SMT production. Implement best practices and drive Lean Manufacturing principles to improve overall efficiency.
  • DFM Analysis: Conduct Design for Manufacturability (DFM) analysis on new and existing products, identifying potential design and process risks and offering solutions to minimize production disruptions and improve yields.
  • Equipment Selection & Maintenance: Recommend SMT equipment upgrades or new purchases to enhance assembly capabilities. Ensure SMT machinery is properly calibrated and maintained.
  • Develop Manufacturing Process Instructions (MPI’s) & Rework Instructions.
  • Ensure that all proper documentation and data is available for all assembly jobs. 
  • Work with Assembly Management Team to completely implement/monitor Assembly Management System.
  • Be available as back-up for walk-through, site audits, or any other requests from customers and partners.  
  • Quality Assurance: Collaborate with the quality engineering team to define inspection criteria, conduct root cause analysis of assembly defects, and implement corrective actions.
  • Documentation & Reporting: Maintain detailed documentation of process parameters, technical issues, and solutions. Report findings and recommendations to relevant stakeholders.
  • Cross-functional Collaboration: Work closely with cross-functional teams including product design, process engineering, quality assurance, and supply chain to ensure product designs are optimized for manufacturability and meet production requirements.
  • Work extended hours based on company needs and be available for after hour emergency calls.
  • Perform other duties as assigned.

QUALIFICATIONS  

  • Education: Bachelor's degree in Mechanical Engineering, Electrical Engineering, or a related field. Equivalent experience will be considered.
  • Experience: 5+ years of experience in SMT/DFA engineering in a high-volume manufacturing environment.
  • Technical Skills:
    • Strong understanding of SMT assembly processes including stencil printing, pick-and-place, reflow soldering, and automated optical inspection (AOI).
    • Proficiency in Design for Manufacturability (DFM) and DFA principles.
    • Experience with SMT programming, equipment setup, and troubleshooting.
    • Familiarity with PCB design tools such as Altium Designer, Cadence Allegro, or similar.
    • Familiar with schematics, PCB fabrication drawings and electronic components that are mounted on electronic assemblies.
    • Able to evaluate Gerber files
  • Problem-solving: Ability to diagnose and resolve complex assembly and design issues.
  • Communication: Strong verbal and written communication skills for interfacing with multiple teams.
  • Certifications: IPC-A-610 or J-STD-001 certifications are preferred.
  • Excellent written and verbal sales communication skills. Fluent in English
  • Ability to perform at the highest level in a fast-paced environment.
  • Exceptional multi-tasking, organizational skills, strong attention to detail and accuracy.
  • Strong interpersonal skills and ability to work with all levels of management
  • Self-motivator and a sense of ownership and urgency.
  • Must be able to maintain confidentiality & professionalism at all times.
  • Proficient in Microsoft Office using Excel, PowerPoint, and Word required.

 

Preferred Skills:

  • Experience with Lean Manufacturing, Six Sigma, or other continuous improvement methodologies.
  • Familiarity with high-reliability manufacturing industries such as automotive, aerospace, or medical devices.


SALARY: $75,000 - 120,000 Annually

MUST be a US Personnel 

 

PHYSICAL DEMANDS:   The physical demands described here represent those that an employee must meet to perform the essential functions of this job successfully. While performing the duties of this job, the employee is regularly required to talk or hear. The employee must frequently stand, walk, and reach with hands and arms. The ability to lift 20 lbs., open filing cabinets, and bend, stand, or climb on step ladders as necessary.

 

ENVIRONMENT:   Clean Manufacturing SMT Environment



What We Offer

  • Competitive Benefits Package – Medical (HMO & PPO), Dental, Vision, Flexible Spending Accounts (FSA), Basic Life & AD&D, and Voluntary Benefits 
  • 401(k) Retirement Plan 
  • Wellness Benefits – Gym/Fitness Membership Reimbursement 
  • Paid Time Off – Vacation, Sick Time, and Paid Holidays

Day Shift Typically 9AM - 6PM

Skills Required

  • Bachelor's degree in Mechanical Engineering, Electrical Engineering, or a related field, or equivalent experience
  • 5+ years of SMT/DFA engineering experience in a high-volume manufacturing environment
  • Strong understanding of SMT assembly processes, including stencil printing, pick-and-place, reflow soldering, and AOI
  • Proficiency in DFM and DFA principles
  • Experience with SMT programming, equipment setup, and troubleshooting
  • Familiarity with PCB design tools such as Altium Designer, Cadence Allegro, or similar
  • Familiarity with schematics, PCB fabrication drawings, and electronic components
  • Ability to evaluate Gerber files
  • Ability to diagnose and resolve complex assembly and design issues
  • Strong verbal and written communication skills
  • Fluent English
  • Proficiency in Microsoft Office, including Excel, PowerPoint, and Word
  • Ability to work at a high level in a fast-paced environment
  • Strong multitasking, organizational, interpersonal, and attention-to-detail skills
  • Ability to maintain confidentiality and professionalism
  • IPC-A-610 or J-STD-001 certification
  • Experience with Lean Manufacturing, Six Sigma, or other continuous improvement methodologies
  • Familiarity with automotive, aerospace, or medical device manufacturing
  • Ability to work extended hours and respond to after-hours emergency calls
  • Ability to lift 20 pounds and meet the stated physical demands
  • Must be US personnel
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The Company
HQ: Sunnyvale, California
493 Employees
Year Founded: 1986

What We Do

Sierra Circuits has been faithfully serving PCB designers and engineers since 1986, and has worked with over 20,000 customers since then. We specialize in PCB manufacturing and assembly and High-Density Interconnect technology. From PCB layout and design to assembly and manufacturing, Sierra Circuits handles all aspects of PCB production. We provide our customers with unprecedented quality, reliability, and a single point of support. No more miscommunication between multiple vendors. No more delays. Sierra Circuits is exactly what you’ve been looking for. We are ITAR, AS9100D, ISO-9001, ISO 13485, and MIL-55110/31032 certified. We are a family-run, minority and women-owned business.

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