01Intro




Transitioning from 5 years of QA Engineering to building and securing the future of DeFi. I bring a unique security-first mindset to smart contract development and DeFi protocols.

SolidityRustFoundryReactEthereumSolana
Temi Williams

02Profile

About Me

From enterprise and central-bank quality engineering to Web3—grounded in regulated delivery, automation, and systems that cannot afford to fail.

My Transition Story

Background: My traditional-industry track spans global technology and consulting at IBM (client engagements across domains and tech stacks), central banking at the Bank of England on the RTGS Renewal Programme for critical payment services, and an intensive academy start at QA Consulting in Manchester. That mix—enterprise delivery, regulated infrastructure, and disciplined SDLC practice—shaped how I think about risk, regression, and release quality.

The Pivot: Blockchain and decentralized finance drew me toward Web3 engineering. The same habits that mattered in banking and enterprise QA—rigorous automation, traceability, and accessibility-aware testing—map directly onto smart contracts and DeFi, where exploits are unforgiving.

Current Focus: I'm building DeFi protocols, smart contracts, and full-stack dApps with a security-first approach. My projects include lending platforms, DEX implementations, and cross-chain applications on Ethereum and Solana.

Future Goals: I aim to become a leading smart contract security expert, contributing to the safety and reliability of the DeFi ecosystem. I'm actively seeking opportunities to work with innovative Web3 teams.

Available for new opportunities

Open to full-time positions, contract work, and freelance projects

Professional Summary

IBM & enterprise delivery

Test Automation Engineer delivering automation across client engagements—UI suites (Java, Selenium, Cucumber, POM), API regressions with REST Assured (including migration from SoapUI), and AWS pipeline runs with Jenkins CI/CD, plus WCAG-oriented accessibility testing and Python checks on data layers.

Bank of England & RTGS

SDET on the RTGS Renewal Programme, contributing to quality for critical payment infrastructure: automated end-to-end regression, engineering standards for test code, and close collaboration with developers in a regulated environment.

Foundations & credentials

Academy training at QA Consulting (Agile delivery, Java/Spring, CI/CD with Jenkins and SonarQube), MEng (Mechatronic Engineering) from the University of Manchester, and ISTQB plus AWS Cloud Practitioner—extended today with Solana and Ethereum ecosystem study.

Web3 engineering

Building smart contracts and dApps with a security-first mindset—lending, escrow, vesting, and more on EVM and Solana—carrying forward habits from high-stakes QA and regulated workflows.

Unique Strengths

  • Regulated-environment QA: RTGS-scale systems and enterprise release discipline
  • Full-stack automation: UI (Selenium/Cypress), API (REST Assured), CI/CD (Jenkins, AWS pipelines)
  • Accessibility and inclusive quality (WCAG-oriented testing)
  • Testing mindset applied to smart contracts, edge cases, and documentation

03Stack

Skills & Technologies

A comprehensive overview of my technical expertise, from smart contract development to security testing.

Smart Contract Development

Solidity
Advanced2+
Rust
Intermediate1+
JavaScript
Expert3+
TypeScript
Advanced2+

Frameworks & Tools

Foundry
Advanced2+
Hardhat
Advanced2+
Anchor
Intermediate1+
React/Next.js
Expert3+

Blockchain Platforms

Ethereum
Advanced2+
Solana
Intermediate1+

Testing & Security

Unit Testing
Advanced4+
Integration Testing
Advanced4+
Security Auditing
Learning1+
Fuzz Testing
Intermediate1+

Development Tools

Git
Expert5+
Docker
Advanced3+
GitHub Actions
Advanced2+
Node.js
Expert4+

DeFi Protocols

AMM Development
Advanced1+
Lending Protocols
Advanced1+
Yield Farming
Intermediate1+
Cross-chain
Learning6mo

Continuous Learning Journey

Currently enrolled in advanced Web3 bootcamps, contributing to open-source projects, and staying up-to-date with the latest developments in DeFi and blockchain technology.

Advanced Solidity PatternsRust for BlockchainMEV & DeFi SecurityCross-chain Development

04Work

Featured Projects

A showcase of my Web3 development work, featuring DeFi protocols, smart contracts, and security tools.

DeFiSolana

Decentralized Exchange

A fully functional decentralized exchange (DEX) built on Solana using Anchor framework and React. This project provides a complete trading platform with token swaps, liquidity pools, and analytics.

contract_address
5hLC8bG9NicQQLHyByQxfoW6n8TjiHqpy3sHURkyUxPW
RustSolanaReactAnchorSolana Web3.js

features[]

  • Multi-collateral lending with dynamic interest rates
  • Yield farming integration with LP tokens
  • Comprehensive test suite with 95% coverage
DeFiSolana

Tipping Dapp

This project is a decentralized tipping application built on Solana, enabling users to send SOL tips with messages to other users. The dApp uses an escrow-based system for secure fund management and features a modern React + Vite frontend.

contract_address
a6bv3yKJWTqsfQTxzZhUtqVDZ5EZf7rFaPPb2nJ6upc
RustSolanaReactAnchorVite

features[]

  • Escrow-based system for secure fund management
  • Message sending with SOL tips
  • Modern React + Vite frontend
NFTSolana

Solana NFT Marketplace

A high-performance NFT marketplace on Solana with advanced trading features.

contract_address
EKReNxVoonN5sRAVgvNQiMWFfvkyRYSqWnNoYgAUaQRW
RustAnchorReactSolana Web3.jsMetaplex

features[]

  • Low-latency trading with sub-second confirmations
  • Creator royalty enforcement and distribution
  • Batch minting and collection management
DeFiEthereum

Smart Contract Lottery

A smart contract lottery built on Ethereum using Solidity.

contract_address
0x634024ff30b772e216ae86ddda8ed651ced94e7a
SolidityEthereumReactNext.jsFoundry

features[]

  • Automated lottery drawing with Chainlink VRF
  • Secure and transparent prize distribution
  • Gas optimization for efficient contract execution
DeFiEthereum

Price Alert Dapp

A price alert dapp built on Ethereum using Solidity and Tellor Oracle for price feeds

contract_address
0xE14e2b66ea27c8842630F4D34352c9c42778adB1
SolidityEthereumReactNext.jsTellor Oracle

features[]

  • Price alerting with Tellor Oracle
  • Secure and transparent price alerting
  • User-friendly interface

More Projects Coming Soon

I'm constantly building and experimenting with new Web3 technologies. Follow my GitHub for the latest updates and contributions.

github.com/TemiW3

05Writing

Technical Blog

Sharing insights from my Web3 journey, technical tutorials, and analysis of the latest blockchain trends.

Featured Posts*.md

Learning Journey
Medium8 min read

QA to Web3: My Journey

How I am making my transition from traditional QA engineering to blockchain development, and the unique advantages my testing background brings to smart contract security.

October 9, 2025
read →
Learning Journey
Medium15 min read

Learning Rust for Solana: What Two Bootcamps Actually Taught Me

Two bootcamps, four key concepts, and why learning Rust for Solana was easier (and harder) than I expected

October 23, 2025
read →
Learning Journey
Medium8 min read

My Journey Update

A quick update on my journey as a Web3 developer, including my progress in building projects and my experience with another EVM based bootcamp.

January 12, 2026
read →

06Contact

Let's Connect

Ready to collaborate on Web3 projects or discuss opportunities? I'd love to hear from you.

Quick Info

Location

London, UK

Availability

Open to opportunities

Response Time

Within 24 hours

Resume

Download my complete resume with detailed experience, projects, and technical skills.

resume.pdf

Currently Available

I'm actively seeking new opportunities in Web3 development, smart contract engineering, and DeFi projects.

Full-time positions
Contract work
Freelance projects
Open source collaboration

Ready to Build the Future of Finance?

Whether you're looking for a dedicated Web3 developer, need a security review, or want to collaborate on an innovative DeFi project, let's make it happen.

temiwilliams / portfolio

Web3Dev

Passionate Web3 Developer and Smart Contract Engineer with a security-first mindset. Transitioning from QA Engineering to build the future of decentralized finance.

© 2026 Temi Williams
status: available