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Jay C.
@jcmtd123
Level 1
Senior Software Developer
United States
Spanish, English
About me
I am a senior full-stack and blockchain developer with 10+ years of experience building secure, scalable, and high-performance web platforms. I specialize in Golang, Node.js, React, smart contracts, and blockchain infrastructure.
I have built payment gateways, DeFi platforms, cross-chain bridges, NFT systems, and custom backend architectures. I work directly with self-hosted nodes, on-chain indexing, and security-first designs.
I don’t use copy-paste code. I build clean, auditable, production-grade systems that scale and stay secure.
Skills
Jay C.
Offline •
Average response time: 1 hour
See my services
Trading Bots Development
I will develop polymarket bot arbitrage bot ai copy trading bot market maker bot
Full Stack Web Applications
I will develop rust python go project for blockchain backend ai
Portfolio
18 Reviews
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-5 out of 18 Reviews
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Most relevant
vpetrovic1994
Repeat Client
Serbia
Outstanding work on the token launchpad and volume/holder bot. The developer demonstrated strong expertise in blockchain development and delivered a very stable and efficient system. The launchpad functions smoothly and the automation bots perform exactly as expected, helping maintain consistent activity...
Seller's Response
Helpful?
carlos_eduard2
Brazil
Great developer with strong knowledge of trading automation and Polymarket markets. The arbitrage bot was delivered on time and works perfectly. He also added useful features like logging and configurable parameters. Communication was smooth and professional from start to finish. I’m very satisfied with the result and would definitely hire again.
Helpful?
vpetrovic1994
Repeat Client
Serbia
Absolutely fantastic experience, Jose! You delivered the Polymarket bot on time and went above and beyond by expertly controlling and optimizing its parameters. Thanks to your work, the bot is performing flawlessly and delivering excellent results. I highly recommend you for anyone looking for reliable and high-quality bot services!
Seller's Response
Helpful?
vpetrovic1994
Repeat Client
Serbia
Jay is my long term partner and he always solved the problems in really efficient ways. Thank you, Jay, we will be the long term partners.
Seller's Response
Helpful?
vpetrovic1994
Repeat Client
Serbia
Another good job on polymarket!!! Excellent US friend, when u need tasks US specific, then he is the perfect person for this. Thank you. Jay.
Helpful?
