Hi there, I am

Tommy Ericsson.

Blockchain Developer & Full-Stack Engineer specializing in DeFi, smart contracts, and scalable web applications.

Stockholm, Sweden

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Services I Offer

Web Development

Modern, responsive web applications using Next.js, React, TypeScript, and TailwindCSS.

Full-stack Development
SEO Optimization
Mobile-friendly UI
API Integration
Backend Systems
CI/CD Setup
Vercel Deployment
AWS Deployment

Blockchain Development

Smart contracts and decentralized apps (dApps) across Solana, Ethereum, Tron, and TON.

Token Creation
ERC-20 Tokens
SPL Tokens
TRC-20 Tokens
DeFi Development
DEX Development
Staking Systems
Launchpad
NFT Projects
GameFi
Smart Contract Audit
Wallet Integration

Trading Bot Development

Automated trading systems and custom crypto bots for centralized and decentralized platforms.

Volume Bots
Market-making Bots
Sniper Bots
Raydium Sniper
Uniswap Sniper
PumpFun Sniper
Token-freezer Bots
Bundler Bots
Telegram Bots
Analytics Tools
Backtesting

Game Development

2D and Web3-integrated games combining creativity with blockchain technology.

2D Browser Games
Mobile Games
NFT Integration
Token Rewards
On-chain Rewards
Fantasy Sports
Play-to-Earn
Game Backend
Leaderboards
Unity Games
Phaser Games
Next.js Games

AI & Machine Learning

AI-driven applications and tools that automate decisions and enhance user engagement.

AI Chatbots
AI Assistants
Predictive Analytics
Recommendation Systems
NLP Apps
Image Recognition
Data Recognition
AI Trading Features
AI Game Features

Experiences

May 2024 - Sep 2024

Senior Ethereum Web3 AI Developer

@Onyx

Engineered Onyx AI, an intelligent on-chain agent enabling autonomous blockchain interactions with dynamic routing logic.

Architected modular systems for token minting, swapping, and cross-chain bridging across Ethereum, Arbitrum, BNB Chain, and Polygon.

Designed secure contract parsing for verified ERC-20, ERC-721, and ERC-1155 interactions.

Devised DEX aggregation algorithms optimizing slippage, gas efficiency, and multi-hop routing.

Integrated oracle feeds and off-chain APIs for real-time market data and automated trading strategies.

Created cross-chain bridge routing using LayerZero, Connext, and Stargate to ensure cost-efficient reliability.

Introduced AI-based wallet analytics for real-time LP tracking, balance monitoring, and action recommendations.

Jan 2024 - Apr 2024

Senior Solana Developer

@Speculape Prediction Market

Designed a decentralized prediction market on Solana enabling outcome-based token trading.

Programmed on-chain logic for market creation, liquidity management, and automated settlements using Rust and Anchor.

Linked real-time price oracles and user dashboards for transparent participation.

Enhanced transaction efficiency, achieving lower latency and minimal fees.

Mar 2024 - Jun 2024

Ethereum Web3 Developer

@code0x.org

Deployed $CODE Swap Aggregator, a cross-chain DeFi platform unifying liquidity across 19+ blockchains.

Constructed smart contract infrastructure for transparent, zero-tax cross-chain swaps.

Engineered bridge aggregation systems optimizing routes on Ethereum, Arbitrum, and Optimism.

Collaborated on tokenomics architecture, ensuring security and long-term liquidity lock (256 years).

Supported frontend integration for real-time analytics, multi-language UI, and improved accessibility.

Dec 2022 - Feb 2024

Backend Web3 Developer

@Dackie Labs

Contributed to the development of DackieSwap, DackiePad (IDO platform), and KingDACKIE Staking Pools across Base, Optimism, Arbitrum, Blast, and Linea.

Optimized multi-aggregator routing to enhance cross-chain DEX performance.

Devised AI-integrated DeFi modules supporting future DeFAI initiatives.

Helped deploy Axelar ITS multi-chain tokens (DACKIE & QUACK) to ensure interoperability.

Worked with UI/UX teams to boost user engagement, helping DackieSwap emerge as a top DEX on Base.

Oct 2021 - Nov 2022

Web3 Developer

@Two Steppe Digital

Delivered smart contracts for a DeFi protocol, improving gas efficiency and security.

Enhanced DAO governance, stablecoin yield generation, and liquidity arbitrage systems.

Integrated Ethereum and ERC-20 tokens into an exchange via address generation, token listing, and wallet features using Web3.js.

Authored and deployed five Ethereum contracts (ERC-20/ERC-721) processing over $120K on-chain volume.

Researched permissioned blocks and IPFS for decentralized data storage.

Aug 2018 - Sep 2020

Fullstack Web3 Developer

@Privi Protocol

Crafted Solidity contracts for DeFi (lending, swapping) and NFT projects on BSC and Polygon.

Oversaw smart contract compilation, migration, and debugging via Truffle and Hardhat.

Built React v16 components aligned with Figma-based UI designs.

Explored Polkadot's parachain architecture using Polkadot.js for Privi's ecosystem integration.

Initiated early experiments on Solana-based DApps including ICO/IDO platforms, DEX, NFT staking, marketplaces, and P2E games in Rust/Anchor.

Supported a Go-based backend for state management using Solidity event logs.

Skills

Programming Languages

JavaScript
TypeScript
Solidity
Rust
Go
Python

Blockchain Development

Ethereum
Solana
Arbitrum
Polygon
BNB Chain
Base
Optimism
Tron
TON

Smart Contracts & Tools

Hardhat
Truffle
Anchor
Web3.js
Ethers.js
Polkadot.js

DeFi & Protocols

DEX
LayerZero
Connext
Stargate
Axelar
Uniswap
Raydium

Frontend Development

Next.js
React.js
Angular
Vue.js
Svelte
TypeScript
HTML
CSS
TailwindCSS

Backend Development

Node.js
Express.js
Go
RESTful APIs
GraphQL

Database & Storage

MongoDB
PostgreSQL
IPFS

AI & Machine Learning

AI Integration
LLM Integration
NLP
Predictive Analytics

DevOps & Tools

Docker
AWS
Git
GitHub
CI/CD
Vercel

Game Development

Unity
Phaser
Web3 Games
P2E Games

Projects

Showcasing impactful projects and technical achievements.