Browse categories
Explore
Fiverr Pro
English
$
USD
Sasa J
@sasajovanovi454
Level 2
Blockchain Dapp, Bot Developer
Serbia
English
About me
Blockchain developer with 5+ years of hands-on experience building production-grade dApps across Solana, EVM chains, XRP, and Sui. My core focus is DeFi and Web3 infrastructure, including staking platforms, DEXs, cross-chain bridges, and NFT marketplaces. I also build custom trading bots such as bundle bots, volume bots, and bumping bots.
I treat every project as my own, prioritize clear communication, and deliver clean, well-tested code on schedule. If you have a Web3 idea you want shipped properly, let's talk.
Skills
Sasa J
$50/hour
Offline •
Average response time: 1 hour
See my services
Trading Bots Development
I will launch token pumpfun axiom pumpswap meteora bundle script trading volume bot
Decentralized Applications (dApps)
I will arbitrage copy trading bot of polymarket kalshi openclaw claude
Want to work on an hourly basis?
Tell Sasa J what you need.
$50
/
hourPortfolio
36 Reviews
| (36) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-5 out of 36 Reviews
Sort By
Most relevant
cborraz
Repeat Client
United States
left a 5 star, well deserved. super easy to work with, understood the project right away even the zk stuff which i was a bit worried about. code was clean, and he actually explained things when i got confused instead of going silent. overall just smooth, I’d work with him again for sure.
1 day
Duration
Trading Bots Development
Helpful?
paulinamroczkow
Repeat Client
United Kingdom
I feel like I actually understand what I'm doing now instead of just blindly running bots and hoping for the best. Thank you.
2 days
Duration
Trading Bots Development
Helpful?
dragisapetro228
Repeat Client
Serbia
Sasa delivered the Polymarket crypto event scraper exactly as requested, communicated clearly throughout the project, and completed everything professionally within the agreed time.
2 days
Duration
Decentralized Applications (dApps)
Helpful?
cborraz
Repeat Client
United States
Communication was fast, work quality was solid, and he stuck to the timeline without me having to chase, highly recommended.
3 days
Duration
Decentralized Applications (dApps)
Helpful?
code_novaa
France
Sasa J is a highly skilled expert with deep knowledge in Polymarket bots.
2 days
Duration
Decentralized Applications (dApps)
Helpful?
