Senior Software Engineer

A SENIOR

OVERVIEW

Lionel is a senior full-stack developer with a broad and versatile coding skill set.
He loves to write code in a high-paced and challenging environment with an emphasis on using best practices to develop high-quality software that meets project requirements, budget, and schedule.

He has worked with tech companies for over 7 years, helping to build technology-based businesses from the ground up. He quickly helps startups and enterprises with prototypes and ideas by efficiently building those things into reality. He rapidly integrates reliable web technologies and achieves flexible software architecture designs. His strong theoretical and practical background in IT, business consulting, and project management make him extremely capable of projects of any size.

As a full-stack developer, He has been collaborating with a variety of companies including small startups and big communities, which has made him intimately familiar with all the stages of the web lifecycle from the initial architecture to final deployment. He enjoys learning new technologies and sharing findings with his colleagues. Lionel is the go-to guy for any of your development needs.

PROFESSIONAL EXPERIENCE

Senior Front-end | Web3 Engineer

Aug, 2023 - April, 2024

Divercefi - Remote, Switzerland

Financial inclusion is at the heart of our purpose and motivation to provide financial education, investment management tools and solutions accessible to everyone. Thus, the mission of Divercefi is to make intelligent investing easy and accessible for everyone to enable the "internet of value" for digital assets. The vision of Divercefi is to become a leading open financial ecosystem leveraging Web3 technologies to empower investors to start and manage their end-to-end investor journey centred on their diversified asset portfolios with assets spanning across all asset classes

  • Developed portfolio discovery functionality integrating Cede.labs and Ethereum wallets for streamlined access to digital asset investment opportunities.
  • Created a graph feature for visualizing portfolio performance trends, enhancing user decision making.
  • Engineered a profit calculation mechanism enabling users to track investment returns since portfolio inception, promoting transparency.
  • Led the development of a real-time portfolio tracking system for efficient asset allocation monitoring.
  • Designed an intuitive portfolio management hierarchy chart for optimized asset portfolio visualization.
  • Utilized React.js, Redux, JavaScript, and DeFi to develop user-friendly investment solutions.
  • Positioned Divercefi as a leader in the open financial ecosystem by leveraging Web3 technologies.
  • Contributed to the development community on GitHub, fostering knowledge sharing and collective advancement in financial technology.

Senior Front-end | Web3 Engineer

May, 2022 - June, 2023

Cosmic Universe - Remote, US

Cosmic Universe is a fantasy blockchain metaverse world-builder and MMORPG with tradable NFTs on the Avalanche blockchain. It is an immersive fantasy metaverse adventure MMORPG where players explore realms, gather, harvest, mine, develop increasingly-advanced plots and settlements, trade, level up for magical powers and in-game rewards, and engage in PVP competitions and events.

  • Developed the NFT marketplace for Cosmic Universe game wizards, elves, and other fantasy characters, items, and cards on Avalanche and Harmony network.
  • Built the website using modern JavaScript framework React and implemented original features such as server side rendering, static rendering by Next.js
  • Made pixel-perfect and mobile-friendly responsive website using Material UI and Tailwind CSS, styled components.
  • Optimized the website performance and web3 calls, and API endpoints using React Hook
  • Handled the heavy development of embedded JavaScript widgets on third-party publisher sites
  • Worked with nested iframes, asynchronous loading of NFT data, and size/scaling issues for mobile, and error-handling
  • Created robust marketplace that reliably loaded, retired, and gracefully handled in multiple browsers and platforms
  • Version controlled by Git and deployed through Google Cloud Platform.

Lead Front-end | Web3 Engineer

Mar, 2020 - Dec, 2022

CropperFinance - Remote, France

Decentralized Ecosystem that Empowers Projects & Maximizes Yield to move Defi forward on Solana. Swap, Yield Farming, Staking, IDO Launchpad & more.

  • Implemented websites, mobile applications, and landing pages from concept through deployment.
  • Standardized all output with a new, responsive, mobile-first approach and strategy
  • Assessed UX and UI designs for technical feasibility. Developed standard and ad hoc report in graph format as required.
  • Collaborated with product team members to implement new feature developments.
  • Integrated functionalities with the Blockchain network including a wallet and Solana programs.

Senior Full-stack Engineer

Jan, 2017 - Present

Remote, Freelance Consultants

During my career as a senior full-stack developer and blockchain expert, I've also cultivated extensive experience as a freelance consultant, providing tailored solutions to a diverse range of clients.

  • Collaborated with businesses to optimize code, integrate technologies, and manage projects, ensuring successful delivery of bespoke software solutions that aligned with clients' objectives.
  • Spearheaded the enhancement of software solutions for diverse clientele, from startups to established enterprises, utilizing expertise in Angular, React.js, Vue.js, Node.js, PHP, Python and more resulting in increased operational efficiency and revenue growth.
  • My consultancy services encompassed architectural design, code optimization, project management, and technology integration, ensuring clients' projects met their objectives efficiently and effectively.
  • Additionally, my approach to staying updated with the latest industry trends allowed me to offer valuable insights and recommendations, further enhancing the success of each project.

Projects

  • RenCRM (CRM platform designed exclusively for non-profit organizations)
  • Kortstrid (A captivating TCG in a vast fantasy world)
  • EvoVerses (A 3D monster battling game bringing Web2 and Web3 together in one platform)
  • JanusNetwork (Web3.0 + Gaming Hub on Avalanche)
  • Meeiro (A user driven IDO launchpad on Aptos connecting retail investors and projects together in a safe, secure, and fun environment)
  • Shmacked (Online delivery service)
  • Trackd Music (Award-Winning Social Music App that gives you 100% Ad-Free music from fresh Artists)

Full-stack Engineer

Nov, 2016 - Feb, 2020

Creativ-Cult GMBH - Germany

Since 2014 Creativ-cult has been on the market with fresh, creative, and innovative ideas to inspire our customers with our graphic design. We also like to go unconventional ways to find the best solutions for our projects. We are not normal and conventional - we think differently and are a little bit crazy - just CULT.

  • Led a cross-functional team of 10 to develop software solutions for clients.
  • Communicate with clients to determine technical requirements and develop plans within an Agile environment to provide solutions on time and within budget.
  • Utilize extensive knowledge of user testing to ensure high-quality, functional software solutions are delivered to clients.

Education

2013 - 2016

Nanyang Technological University - Singapore

Bachelor's Degree of Computer science

SKILLS

JavaScript, TypeScript, ECMAScript (ES5, ES6), PHP, Python, Ruby, C/C++, C#, Java
Angular, React.js / Redux, Next.js, Gatsby, Vue.js / Vuex, Nuxt.js, Quasar, jQuery
Node.js / Express, Laravel, Symfony, CodeIgniter, Django, Flask, FastAPI, Ruby on Rails
Bootstrap, Tailwind CSS, SASS, LESS, Material UI, Ant D, Chakra UI, Vuetify, React Bootstrap, Bootstrap Vue
D3.js, Chart.js, Mapbox,js, Leaflet.js, Swiper.js
Jest, Mocha, Cypress
MySQL, PostgreSQL, MongoDB, SQLite, Redis
Docker, AWS, Google Cloud Platform, Firebase
Git, GitHub, Bitbucket, GitLab
RESTful APIs, GraphQL, Postman
Web3.js, Ether.js, Solidity, Rust, Hardhat, Truffle, Remix, NFT, DEFI, DEX, Ethereum, Solana, Boba Network

15

Awards Won

153,062

Happy Customers

72

Projects Done

WHAT CAN I DO

Frontend Development

Optimizing the user experience. Using HTML, JavaScript, and CSS, Frameworks to bring concepts to life. Developing and maintaining the user interface. Implementing design on mobile websites. Creating tools that improve site interaction regardless of the browser. Managing software workflow.

Backend Development

Participate in the entire application lifecycle, focusing on coding and debugging. Troubleshoot and debug applications. Manage cutting-edge technologies to improve legacy applications. Collaborate with Front-end developers to integrate user-facing elements with server-side logic. Build reusable code and libraries for future use.

Fullstack Development

As a senior front-end and back-end engineer, I can handle full-stack development. Developing back-end website applications. Creating servers and databases for functionality. Ensuring cross-platform optimization for mobile phones.

Blockchain

Enable secure digital transactions by creating systems to record and store blockchain data in a way that prevents changes or hacks. Design secure blockchain technologies, develop application features and interfaces and maintain client and server-side applications. Implement contract functions into the front-end using Web3.

UI / UX

Applying interactive and visual design principles on websites and web applications for a positive and cohesive user experience. Beautiful eyes for pixel-perfect and iterating website features at a fast pace and must be able to code minor changes without a developer's help.

Unlimited Support

I will support to scale && maintain the websites further with my pleasure. Please ask me anytime if you want my support and help.

SOME OF WORK