Blockchain developer
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About this service
Summary
Deliverables
FAQ
FAQs
What blockchains do you work with?
I specialize in Solana (advanced proficiency) and EVM chains including Ethereum, Polygon, Arbitrum, and Binance Smart Chain. I can handle smart contract development, deployment, and full-stack dApp integration across these ecosystems. If your project requires a different chain, I can assess feasibility during our initial consultation.
How long does a typical project take?
Timeline depends on complexity: Smart contract deployment: 3-7 days Token launch with basic infrastructure: 2-3 weeks Full-stack dApp (frontend + contracts): 3-6 weeks Complex DeFi protocols: 8-16 weeks I provide a detailed timeline after reviewing your requirements. I prioritize speed without compromising code quality or security.
Do you provide post-delivery support?
Yes. All projects include 1-2 weeks of post-delivery support for bug fixes, questions, and clarifications at no additional cost. For ongoing maintenance, updates, or feature expansion, I offer retainer packages or project-based support—we can discuss this based on your needs.
I'm not technical—can you still work with me?
Absolutely. I handle the entire technical lifecycle and explain everything in plain language. You don't need to understand Rust or Solidity—just tell me what you're trying to build and what problem you're solving. I'll translate your business requirements into working code and walk you through the final product.
Do you handle both smart contracts and frontend development?
Yes, I'm a full-stack blockchain developer. I build the entire application: smart contracts (backend logic), frontend interface (React/Next.js), wallet integrations, and deployment infrastructure. You get a complete, production-ready product—not just a contract that sits there doing nothing.
What's included
Fully deployed and tested smart contract on mainnet
Production-ready contract deployed to your specified blockchain with all functionality tested and verified.
Complete source code with documentation
Full codebase with inline comments, deployment guides, and technical documentation for future modifications.
Production-ready application deployed to hosting platform
Fully functional dApp with frontend, smart contracts, and wallet integration—live and accessible to users.
Complete codebase with GitHub repository access
All source code (frontend, backend, smart contracts) with documentation, deployment pipeline, and version history.
Deployed token contract on specified blockchain
Your custom token live on mainnet with configured tokenomics, verified on block explorer (Etherscan/Solscan).
Contract source code + admin wallet setup guide
Full contract code with documentation and step-by-step guide for managing your token, including security best practices.
1-2 weeks post-delivery support
Bug fixes, questions, and clarifications covered after project completion.
Example projects
Recommendations
(5.0)
Client • Nov 25, 2025
Recommended
Jelena was far more than an AI consultant – she acted as a true co-founder and strategic partner. She shaped our AI and web3 fintech architecture end-to-end, aligning product, data, security and infrastructure into a scalable stack. She brings clear thinking, calm execution and real ownership. In an enterprise SaaS or cybersecurity environment, she’s exactly the kind of person you want on your core team.
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