Tim Crittenden

Tim Crittenden Bucharest, Romania SUMMARY Detail-oriented and proactive full-stack developer with 7 years of experience in designing and delivering scalable web applications. Proven problem-solver with expertise across front-end, backend, and DevOps practices. Collaborative team player adaptable to fast-paced environments, committed to continuous learning and innovation. EXPERIENCE Jax.Network – Kyiv, Ukraine Skilled Full Stack Developer (Contract) Nov / 2020 – Nov / 2024  Developed and deployed multiple web applications boosting user engagement by 30% using Laravel and Vue.js.  Maintained and optimized a Python/Django web application serving 10,000+ users monthly by implementing RESTful APIs, improving backend performance by 30%, and enhancing security and database integration.  Developed and deployed secure DeFi smart contracts using Solidity and Hardhat, including staking systems and custom ERC-20 tokenomics.  Integrated blockchain wallet connectivity with WalletConnect, Web3.js and MetaMask for secure cryptocurrency transactions.  Built and tested decentralized applications with features like liquidity pools, yield farming, and on-chain governance across EVM-compatible chains.  Implemented real-time features using Laravel WebSockets, enabling live UI updates that reduced page refreshes by 40% and improved user interaction time by 25%.  Created dynamic data visualization with DataTables and chart libraries improving user data interaction speed by 40% and enhancing UI/UX clarity.  Designed scalable architectures using MVC and MVVM patterns, reducing development time by 30% and improving code maintainability.  Diagnosed and resolved full stack issues across front-end, back-end, and databases, reducing bug resolution time by 35% through strong problem-solving skills.  Collaborated with a team of 4 developers to troubleshoot issues, share solutions, and uphold coding best practices. REMITTY INC – Phoenix, AZ, USA Full Stack Developer (Contract) Apr / 2018 – Oct / 2020  Architected backend infrastructure and APIs for 6 multi-vendor mobile apps, deploying on AWS with automated CI/CD pipelines.  Managed SQL/NoSQL databases using Laravel, Node.js, and ORM tools, leveraging PHP, JavaScript, and backend libraries to improve data performance and code efficiency by 30%.  Integrated DevOps into backend workflows by automating CI/CD pipelines and managing cloud infrastructure, reducing deployment time by 40% and improving release reliability.  Incorporated multiple FinTech and stock APIs, including custom libraries, accelerating data processing by 35% and reducing third-party integration time.  Advised the CEO on growth strategies and delivered timely updates and enhancements, contributing to a 20% improvement in project delivery efficiency. Self-Employed Full Stack Developer (Freelancer) Jul/2015 – Apr/2018  Specialized in LAMP and MERN/MEAN stacks, delivering high-performance web applications across diverse domains.  Enhanced and maintained 30+ backends using Laravel, Node.js/Next.js, and Python, deploying on Ubuntu servers hosted on AWS and Bluehost, resulting in improved performance and uptime.  Built serverless solutions using AWS Lambda, Firebase Functions, and Sanity, reducing infrastructure costs by 25%.  Implemented CI/CD pipelines with AWS CodeDeploy and GitHub Actions, accelerating deployment speed by 40% and minimizing downtime.  Led code reviews and debugging, reducing bugs by 30% and enhancing application performance while maintaining high code quality standards.  Engaged with 30+ customers to gather feedback throughout project stages, addressing concerns promptly to improve client satisfaction by 25%.  Developed comprehensive payment systems—checkout, payout, invoicing, and subscriptions—using Stripe and Plaid across multiple projects, increasing transaction efficiency by 35%.  Adopted emerging technologies to boost site performance by 30%, enhance relevance, and align with evolving business requirements. EDUCATION Politehnica University of Bucharest – Bucharest, Romania Oct / 2014 BS in Computer Science SKILLS Languages: PHP, HTML, CSS, JavaScript, TypeScript, Python, Solidity Relevant: Restful API, Stripe, Plaid, Firebase, Twilio, AWS, CI/CD, Google Map, Web3.js, ether.js, Hardhat, Truffle, Cryptocurrency, Coinbase, Binance, React-chart, Tailwind CSS, Material CSS, Antd CSS Frameworks: Laravel, Node.js / Next.js / Express.js, React.js, Vue.js, jQuery, Angular, Django, Flask Database: MySQL, MongoDB, NoSQL Team Tools: Git, Trello, Slack, Asana, Clickup