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$
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I will implement schematic design, pcb production, and pcba generation
Gig Summary
Experienced electronics and AI application engineer in China
I am an electrical and electronics engineer based in China with over 15 years of experience in electronics product design. I possess expertise in general electronics, PCB design, analog and digital el...
Buyers keep returning
Xianjun Q has an exceptional number of repeat buyers
Level 2
Has met high performance criteria and has a proven track record for meeting client expectations.
Highly Responsive
Known for exceptionally quick replies
What people loved about this freelancer
neofr2017
France
Outstanding work : I almost never write reviews, but this one I had to. I rarely write reviews online, but after everything Xianjun did for this project, it...
moris_chemtov
Canada
I was very very happy with the results , I should have been more explicit , but overall the freelancer was on top of things and answer all the questions aIKI had.
meshsystems
New Zealand
Xianjun is an excellent engineer, provides thorough explanation of the workings of the circuits he designs and delivers projects on time. We will continue to use Xianjun for future design work.
ijuhoor
Switzerland
Xianjun was very quick to answer and provided his expertise to my design. He worked with the constraints and suggested resolutions when a constraint could not be achieved. I would work with him again.
About this Gig
I am an electrical and electronics engineer based in China with over 15 years of experience in electronics product design. I possess expertise in general electronics, PCB design, analog and digital electronics, and have a strong track record in high-volume product manufacturing. I am proficient in home automation, industrial automation, Internet of Things system design, and embedded system design. Please feel free to contact me for assistance with your projects and design endeavors.
Leveraging China's robust supply chain, I can assist clients in sourcing any required components within China. I can also facilitate seamless PCB fabrication and SMT assembly through JLC PCB. Clients from any country can easily continue PCBA production with JLC.
I typically utilize design tools such as EASYEDA,JLCEDA, Altium, Protel, Proteus, etc. My professional expertise encompasses various technologies including SoC, I2C, C, JTAG, ADC, DAC, MCU, and other aspects of hardware design and development.
I can provide PCB manufacturing files, 3D view files, and can arrange for PCBA production through JLC's processing services.
My Portfolio
Reviews
117 reviews for this Gig
| (109) | ||
| (6) | ||
| (1) | ||
| (1) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
N neofr2017
France
Outstanding work : I almost never write reviews, but this one I had to. I rarely write reviews online, but after everything Xianjun did for this project, it would have felt wrong not to. This was not a simple job: strict EMC requirements and CE certification ahead. He handled all of it. He does exactly...
$200-$400
Price
6 days
Duration
Helpful?A 
aguepe6
Spain
according to expectations although support was a bit weak towards the end of the project. also a bit overpriced considering other options
$600-$800
Price
4 weeks
Duration
K 
Seller's Response
Helpful?M moris_chemtov
Canada
Ongoing collaborationI was very very happy with the results , I should have been more explicit , but overall the freelancer was on top of things and answer all the questions aIKI had.
$200-$400
Price
5 days
Duration
Helpful?M meshsystems
New Zealand
Ongoing collaborationXianjun is an excellent engineer, provides thorough explanation of the workings of the circuits he designs and delivers projects on time. We will continue to use Xianjun for future design work.
$100-$200
Price
3 days
Duration
Helpful?I 
ijuhoor
Switzerland
Ongoing collaborationXianjun was very quick to answer and provided his expertise to my design. He worked with the constraints and suggested resolutions when a constraint could not be achieved. I would work with him again.
$100-$200
Price
3 days
Duration
Helpful?
Reviews
117 reviews for this Gig
| (109) | ||
| (6) | ||
| (1) | ||
| (1) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
N neofr2017
France
Outstanding work : I almost never write reviews, but this one I had to. I rarely write reviews online, but after everything Xianjun did for this project, it would have felt wrong not to. This was not a simple job: strict EMC requirements and CE certification ahead. He handled all of it. He does exactly...
$200-$400
Price
6 days
Duration
Helpful?A aguepe6
Spain
according to expectations although support was a bit weak towards the end of the project. also a bit overpriced considering other options
$600-$800
Price
4 weeks
Duration
K Seller's Response
Helpful?M moris_chemtov
Canada
Ongoing collaborationI was very very happy with the results , I should have been more explicit , but overall the freelancer was on top of things and answer all the questions aIKI had.
$200-$400
Price
5 days
Duration
Helpful?M meshsystems
New Zealand
Ongoing collaborationXianjun is an excellent engineer, provides thorough explanation of the workings of the circuits he designs and delivers projects on time. We will continue to use Xianjun for future design work.
$100-$200
Price
3 days
Duration
Helpful?I ijuhoor
Switzerland
Ongoing collaborationXianjun was very quick to answer and provided his expertise to my design. He worked with the constraints and suggested resolutions when a constraint could not be achieved. I would work with him again.
$100-$200
Price
3 days
Duration
Helpful?
