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I'm an experienced blockchain developer with a strong focus on Solana. I specialize in building secure, scalable applications using Rust and Anchor, with a solid background in DeFi integrations, decentralized identity, and core blockchain infrastructure. I enjoy crafting high-performance on-chain logic and intuitive user-facing dApps. Currently I work as a freelancer, delivering Solidity/EVM and Solana-based solutions for clients. I collaborate across front-end and back-end teams to create end-to-end decentralized experiences, from tokenomics and minting to cross-chain bridges and on-chain game economies. I stay active in the community and continually adopt new tooling to improve reliability and throughput.…I'm an experienced blockchain developer with a strong focus on Solana. I specialize in building secure, scalable applications using Rust and Anchor, with a solid background in DeFi integrations, decentralized identity, and core blockchain infrastructure. I enjoy crafting high-performance on-chain logic and intuitive user-facing dApps. Currently I work as a freelancer, delivering Solidity/EVM and Solana-based solutions for clients. I collaborate across front-end and back-end teams to create end-to-end decentralized experiences, from tokenomics and minting to cross-chain bridges and on-chain game economies. I stay active in the community and continually adopt new tooling to improve reliability and throughput.

Marek Dvojak

Blockchain Developer, Web Developer, Programmer, +4

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I'm an experienced blockchain developer with a strong focus on Solana. I specialize in building secure, scalable applications using Rust and Anchor, with a solid background in DeFi integrations, decentralized identity, and core blockchain infrastructure. I enjoy crafting high-performance on-chain logic and intuitive user-facing dApps. Currently I work as a freelancer, delivering Solidity/EVM and Solana-based solutions for clients. I collaborate across front-end and back-end teams to create end-to-end decentralized experiences, from tokenomics and minting to cross-chain bridges and on-chain game economies. I stay active in the community and continually adopt new tooling to improve reliability and throughput.…I'm an experienced blockchain developer with a strong focus on Solana. I specialize in building secure, scalable applications using Rust and Anchor, with a solid background in DeFi integrations, decentralized identity, and core blockchain infrastructure. I enjoy crafting high-performance on-chain logic and intuitive user-facing dApps. Currently I work as a freelancer, delivering Solidity/EVM and Solana-based solutions for clients. I collaborate across front-end and back-end teams to create end-to-end decentralized experiences, from tokenomics and minting to cross-chain bridges and on-chain game economies. I stay active in the community and continually adopt new tooling to improve reliability and throughput.

Available to hire

I’m an experienced blockchain developer with a strong focus on Solana. I specialize in building secure, scalable applications using Rust and Anchor, with a solid background in DeFi integrations, decentralized identity, and core blockchain infrastructure. I enjoy crafting high-performance on-chain logic and intuitive user-facing dApps.

Currently I work as a freelancer, delivering Solidity/EVM and Solana-based solutions for clients. I collaborate across front-end and back-end teams to create end-to-end decentralized experiences, from tokenomics and minting to cross-chain bridges and on-chain game economies. I stay active in the community and continually adopt new tooling to improve reliability and throughput.

Skills

Experience Level

Expert

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Language

English

Advanced

German

Beginner

Work Experience

Blockchain Developer (Solana) at Freelance / Independent Contractor

April 1, 2025 - November 26, 2025

Developed and deployed advanced Rust/Anchor (0.31+) smart contracts, including a Pumpfun fork integrated with main Pumpfun logic, Raydium CP-Swap pools, and automated liquidity provisioning via CPI. Built and optimized Solana-based game contracts (Jackpot, Plinko, Coin Orao) with an Oracle VRF for verifiable randomness. Implemented Meteor token locking and vesting through CPI integration with Jupiter’s jup-lock program to ensure secure escrow and scheduled unlocks. Created Telegram and Discord bots enabling token deployment, trading, and on-chain interaction directly from chat platforms. Built high-performance DEX data parsers and indexers using Substream to enable real-time analytics and historical indexing of Solana markets. Developed Twitter-triggered token buy bots leveraging Twitter API and MEV protection via Jito Shr edstream and Helius Laserstream for sub-second execution. Implemented Bonkfun bundlers and advanced Bonkfun trading bots.

Blockchain Developer / Solana Developer at FINEXITY AG

December 31, 2023 - December 31, 2023

Transitioned to the Anchor framework, refactoring legacy Solana programs for maintainability, security, and developer experience. Built DeFi protocols including staking contracts, lending platforms, liquidity pools, and AMMs on Solana. Integrated Pyth and Switchboard oracles for price feeds in lending and trading protocols. Developed NFT minting, auctions, and marketplace contracts following Metaplex Candy Machine v2. Implemented cross-program invocations (CPI) and multi-signature wallets. Built CPI-based liquidity provisioning and token swap contracts with Raydium, Saber, and Orca. Improved developer tooling with TypeScript SDKs, Anchor IDLs, and localnet scripts. Delivered dApps using React, Next.js, and TypeScript, including token launchpads, analytics dashboards, and staking portals. Designed Yield Farming & Governance mechanisms with DAOs for protocol changes.

Solana & Rust Developer (Early-stage) at Luca Ulez (Remote)

March 31, 2021 - March 31, 2021

Developed and deployed early-stage Solana programs in Rust before the Anchor framework was mainstream. Created custom SPL token minting, transfer, and metadata integration programs for experimental DeFi projects. Built prototype AMM and liquidity pool logic on Solana’s Serum DEX ecosystem, leveraging orderbook-based trading. Designed CLI tools in Rust for token distribution, account initialization, and program interaction. Optimized transaction compute unit usage and minimized serialization overhead for faster execution. Contributed to early Solana communities during the rise of Serum, Mango Markets, and Raydium.

Blockchain / Solana Developer at Freelance / Independent Contractor

March 31, 2025 - March 31, 2025

Developed advanced Solana smart contracts using Rust and Anchor (0.30+) for high-performance DeFi platforms, NFT infrastructure, and game economies. Built variable Solana trading bots (sniper, copy trading, volume) for multiple DEXs with block-level latency optimizations. Implemented token standards (SPL) and on-chain token logic for staking and rewards. Developed Play-to-Earn (P2E) game contracts for tokenized assets and reward systems. Facilitated cross-chain bridges (Wormhole, Allbridge) for asset transfers between Solana and EVM chains. Contributed to Solana community tooling with TypeScript SDKs, IDLs, and localnet simulations. Delivered React/Next.js/TypeScript dApps including launchpads, analytics dashboards, and staking portals. Implemented cross-chain liquidity provisioning and governance mechanisms.

Freelance Solana Developer at Self-employed / Freelance

April 1, 2025 - November 26, 2025

Built and deployed advanced Rust/Anchor (0.31+) smart contracts including Pumpfun fork contract integrated main Pumpfun logic, Raydium CP-Swap pools and automated liquidity provisioning using CPI calls. Implemented Solana games ( Jackpot, Plinko, Coin Orao ) with Oracle VRF verification. Developed token locking and vesting via CPI integration with Jupiter’s jup-lock program for secure escrow and scheduled unlocks. Created high-performance Telegram and Discord bots enabling token deployment, trading, and on-chain interaction from chat platforms. Built real-time DEX data parsers/indexers (Substream) for analytics and historical indexing. Implemented Twitter-triggered token buy bots with MEV protection and rapid transaction conveyance. Developed Bonkfun bundlers and advanced Bonkfun trading bots. Built a Pumpfun sniper bot leveraging Jito Shredstream and Helius Laserstream for sub-second execution.

Solana Web3 & DeFi Developer at FINEXITY AG

December 1, 2023 - December 1, 2023

Transitioned to Anchor framework, refactoring legacy Solana programs for maintainability, security, and developer experience. Developed DeFi protocols including staking, lending, liquidity pools, and automated market makers on Solana. Integrated price feeds from Pyth and Switchboard Oracles for lending and trading protocols. Implemented cross-program invocations (CPI) and multi-signature wallets for modular secure interactions. Built NFT minting, auctions, and marketplaces following Metaplex Candy Machine v2 standards. Delivered front-end dApps using React/Next.js/TypeScript with token launchpads, analytics dashboards, and staking portals. Designed Yield Farming and Governance mechanisms with DAO structures.

Developer (Rust, Solana & Rust) at Luca Ule z

March 1, 2021 - March 1, 2021

Entered Solana development and Rust programming before Anchor matured. Created custom SPL token minting, transfer, and metadata integration for experimental DeFi projects. Built prototype AMM and liquidity pool logic on Solana/SERUM. Designed CLI tools in Rust for token distribution, account initialization, and program interaction. Optimized transaction compute unit usage and reduced serialization overhead for faster execution.