Roswelly Dev

Professional Solana Rust Engineer & Web3 Developer

Roswelly Dev specializes in Solana blockchain development, smart contracts, dApps, DeFi, GameFi, and SocialFi. Building the future of decentralized finance on Solana.

About Me

I'm Roswelly, a passionate Solana Rust Engineer. My expertise spans across DeFi, Smart Contract Trading bots, Casino games and dApps.

Roswelly Dev specializes in building dApps on Solana, including trading bots for all Dexs like Pump.fun, Meteora etc Casino games with provably fair algorithms, lottery systems, and automated trading solutions using services like Jupiter aggregator and Jito shredstream, Nozomi.

Main Skills

Rust

Anchor

Web3.js

Solidity

Python

GoLang

React

Next.js

Typescript

Node.js

Postgres

Docker

Kubernetes

MongoDB

Supabase

AWS

Javascript

My Projects

Check out my work

From Web2 projects to complex DApps, DeFi, Casino. Here are a few of my favorites.

Solana Trojan Bot forked

Forked Solana Trojan bot with copy trading and sniper features on pumpfun and bonkfun, raydium. Implemented manual buy /sell on pumpfun. Ensuring in the same block and capturing new token mint By using Jito shredstream and Helius RPC and Jupiter aggregator v6. wallet keypair generation securely

Rust

Anchor

web3.js

React

Typescript

MongoDB

Redis

Node.js

Jupiter aggregator v6

Helius Grpc

Jito shredstream

Website

Web3 Casino Games

Built smart contracts and dapps for web3 casino games. Implemented casino logic(bets, payouts, jackpots) on-chain and ensuring fairness with provably fair algorithms. Handled deposits, withdrawals, and staking. Integrated NFTs for in-game assets, VIP access, or player rewards.

Rust

Solidity

web3.js

React

Next.js

Typescript

PostgreSQL

Prisma

TailwindCSS

Node.js

Website

Solana Lottery Game

Built smart contract for lottery game and Implemetned cNFT mint and rewards for users who only followed the official twitter by using rapid api. Made ticket purchase system which consists of 6 numbers

Rust

Anchor

web3.js

React

Typescript

MongoDB

TailwindCSS

discord.js

Node.js

Rapid API

Website

Pumpfun Forked

Built bonding curve smart contract with customization features and made backend. Token creation & bonding ucrve sale, LIquidity migration to a DEX, Auto pool creation with predefined liquidity and lock period, Fee & treasury logic.

Rust

Anchor

web3.js

React

Typescript

MongoDB

TailwindCSS

Node.js

Express

TradingView

Website

Polygon Casino Games

Built base smart contract for Coiflip, Dice, Roulette, Crash and random outcomes are generated usingi Chainlink VRF. Integrated price oracles to convert non-native token profits to native token shares for reward.

Solidity

ethers.js

React

Typescript

MongoDB

TailwindCSS

Node.js

Website

Four.meme sniper | migration sniper bot

After detecting new tokne mint and check whitelist and buy and sell the token in the same block including rug and risk detection. While detecting new token is migrated from four.meme to PancakeSwap, snipes migrated token.

BNB

Solidity

Web3j.s

Node.js

Typescript

Express

Website

Solana Arbitrage Bot

Solana Arbitrage Bot with Jupiter AggregatorIntegration A high-performance, real-time arbitrage bot for Solana that identifies and executes profitable price differences across multiple DEXs using Jupiter Aggregator v6, gRPC streaming, Jito bundles, and advanced MEV strategies.

Solana

Rust

Anchor

Jupiter Aggregator

Jito shredstream

Helius gRPC

Nozomi

Website

Contact Roswelly Dev

Get in Touch with Roswelly Dev

Ready to work with Roswelly Dev on your next Solana blockchain project? Let's discuss how I can help bring your Web3 vision to life.