Universal AC Circuit Design Engineer

Lumitec   •  

Delray Beach, FL

Industry: Manufacturing & Automotive


11 - 15 years

Posted 41 days ago

Our team is comprised of creative, self-motivated, hands-on engineers, designers, and technicians who love conceptualizing and quickly bringing to market exciting new products. This is a unique opportunity for an exceptional person with 10+ years' experience in AC power supply circuit design. Project leadership and LED lighting design experience a strong plus.

In this role you will drive innovative products design and execution from concept investigation and design analysis to successful production execution. You are hands-on and have advanced knowledge and experience in design analysis, modeling and simulations, schematic/BOM generation, PCB layout, DFM, prototype developments, tests & validations, qualification, and taking products to production.

Proven abilities in the following:

  • AC Power supply safety.
  • Understanding EMC/EMI requirements and mitigation technique implementation.
  • Power supply PCB layout.
  • State of the art techniques for efficiency optimizations including no load/light load efficiency techniques.
  • Deep understanding of thermals, mechanical, and packaging challenges.
  • Deep understanding of materials', components' and design requirements to assure long term reliability of AC circuits.
  • UL, CE, CSA Certification Processes.
  • Use of Altium for schematic capture and PCB layout.
  • Highly Proficient in the use of testing and analysis tools such as mixed signal O-scope, signal generators, spectrum analyzer, power supplies, power meters, Hi Pot testers, network analyzers.
  • AC Circuit simulation interpretation and application.
  • Universal AC Circuits design.
  • Design of AC circuits for Noise mitigation.
  • Design of AC circuits requiring power factor correction of 0.9 or higher.
  • Design of High-efficiency switch-mode power supplies.
  • Design of Isolated Power Supplies, control circuits or lighting circuits.
  • Design of DC/DC converters and AC-DC rectifier for universal AC input.
  • Design of high efficiency AC circuits with power ratings from 50 watts to 200 watts or higher.


  • Ability to select the best design option for power metric performance optimization including but not limited to efficiency, power density, cost, and scalability.
  • Lead Power supply design concept definition in collaboration with cross-functional team.
  • Provide design simulation, calculations, and analytical models for prediction of design concept.
  • Provide design Schematic, PCB layout and BOM.
  • Conduct design and layout reviews with cross-functional teams.
  • Adhere to robust design methodologies for successful project execution.
  • Perform R&D testing to optimize performance and pass standard, EMC, EMI, ESD compliance tests.
  • Develop electrical DFMEA, perform worst case analysis and simulations and develop structured problem solving techniques for test failure resolution.
  • Strong analytical/problem solving skills and ability to guide critical decisions.
  • Develop product design requirements based on a product definition.
  • Conduct thorough prototypes test and results validation. Hands-on work in lab is a must.
  • Develop and implement test methodologies for design verification as well as production testing.
  • Produce designs for long term reliability in a marine environment.
  • Produce designs which are geared towards 100 to 2000 units per year production quantity.
  • 10+ years industry experience and must have a BSEE. Strong background in power electronics.

The following are considered beneficial in this position:

  • Knowledge of embedded programming languages such as C, C++
  • Knowledge of NXP (Freescale) CodeWarrior environment.
  • Lighting design experience.

You will find this position very satisfying if you:

  • Are passionate about your work and look forward to bringing great products to market.
  • Are highly creative, and enjoy using that creativity to focus your technical expertise on problems to develop elegant solutions.
  • Tend to be generally positive and approach most challenges with the firm belief that you will succeed.
  • Have a broad range of personal and professional interests and tend to want to learn things even if they are outside of your core area of focus.
  • Love to build, tinker, design, create, modify and experiment.
  • A love for boating is a plus.