Senior Software Engineer

A SENIOR

FRONT-END ENGINEER

|

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

Lead Full-Stack | AI | Blockchain Specialist

May, 2024 - Jan, 2025

ChainStats - US

ChainStats is a cutting edge on-chain data focused company building towards the vision of unlocking the true potential of what blockchain data can bring to our world.

  • Spearheaded the development and backend architecture using PHP (Laravel) to build a scalable and efficient platform.
  • Deployed and managed AWS cloud infrastructure for seamless and secure operations.
  • Built responsive, user-friendly interfaces using React.js, Redux, and TypeScript.
  • Integrated Bitcoin and Ethereum nodes to enable on-chain data processing and blockchain analysis.
  • Embedded TradingView and custom charting tools to deliver real-time analytics, including liquidation and orderbook charts.
  • Integrated APIs from major exchanges such as KuCoin, Bybit, Binance, CoinMarketCap, MEXC, and BitMart for comprehensive trading and market insights
  • Implemented Web3 wallet connectivity for secure blockchain transactions.
  • Developed modules for Web3-based revenue and portfolio management, enabling users to track and optimize digital assets
  • •Independently set up and maintained the entire tech stack, ensuring reliability and cutting-edge performance.

Senior Front-end | Web3 Engineer

Aug, 2023 - April, 2024

Divercefi - 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 Full-Stack | Web3 Engineer

Sep, 2021 - Dec, 2022

CropperFinance - 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.

Full-stack Engineer

Nov, 2018 - 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

2014 - 2018

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
OpenAI APIs, Transformers Library, DeepAI, DALL·E, Whisper, Pandas & NumPy, Google AI/ML APIs, AWS AI/ML Services

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