Leigh O.
Fullstack Engineer
Experience
Fullstack Engineer
Workskuad (Formerly GoodTalent)
- Fullstack engineering with a heavy back-end focus for an employee and payroll management system using Typescript, NodeJs, NestJs, PostgreSQL, TypeORM, NuxtJs, VueJs, Websockets, AWS
- Added employee self-management functionality including the ability to apply for leave, generate payslips, receive funds in an in-app wallet, and automatically withdraw funds to bank account
- Implemented accurate and compliant payroll calculations in line with various countries' payroll regulations
- Implemented internationalization to support collection and disbursement of payments in NGN, USD, EUR, KES and more
- Developed and maintained robust APIs for seamless integration with front-end applications and external services including airtime purchase and gym membership purchase
- Revamped the documentation for the existing backend service in collaboration with the tester
Back-End Software Engineer
TellerOne
- Back-end development for a fintech and blockchain application using Typescript, NodeJs, Express, MongoDB, AWS EC2, BitCore, Web3, Jest
- Created REST API for seamless integration between blockchain, AWS, frontend application, and various APIs including CoinMarketCap, WalletConnect, BlockCypher, Etherscan
- Developed blockchain infrastructure enabling wallet creation, transfers, and conversions for four cryptocurrencies (ETH, BTC, BNB, USDT)
- Enhanced fintech app performance, achieving sub-20ms latency for 36,000 requests per minute by optimizing backend database queries and implementing caching
- Mentored peers on blockchain safety and API best practices
- Integrated with SMTP provider to automate emails
- Reduced database query times by utilizing aggregator functions and indexing foreign keys
Web Developer
Flexpert iSystems
- Developed a job board and career insights website using JavaScript, Vue, NuxtJs, Tailwind
- Turned Figma designs into beautiful and functional user interfaces
- Oversaw migration of the entire frontend codebase from Bootstrap to Tailwind
- Built front-end features such as posting job offers, viewing average ratings, searching by keyword, and sorting by relevance, date, and/or star ratings for specific companies or jobs
- Implemented server-side rendering with Nuxt.js and improved web page quality through Vue Lazy Load, achieving a Lighthouse SEO score of 95+
Technical Writer and Freelance Software Developer
Freelance & Side Projects
- Technical writing and freelance software development using NodeJs, ReactJs, NextJs, Pusher, Jasmine, JQuery, AWS S3
- Built a book retail company site with React.js featuring shopping, add-to-cart, discounts, payments, and delivery
- Built the MiniQuery library, a smaller jQuery alternative
- Utilized Vue and Socket.io to build SendMan, a web-based file sending and retrieval app styled like a regular messaging application
- Wrote a technical article on creating Telegram AI bots, read by thousands of developers
Summary
I am a fullstack engineer with a strong focus on back-end development across fintech, blockchain, and payroll management systems. I excel in creating robust APIs and scalable applications with modern technologies like Typescript, NodeJs, and AWS, while also crafting smooth front-end experiences using Vue and NuxtJs. My hands-on experience in internationalization and compliance has helped streamline complex payroll and payment processes.
I enjoy building innovative solutions that solve real-world problems, optimizing performance, and delivering clean, maintainable code. With a track record in enhancing system performance and mentoring peers, I bring a blend of technical expertise and practical insight to every project.
Languages
Education
Lagos State University
Lagos, Nigeria · 4.0
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