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Hi, I'm Dennis Stephens.

Dennis has been a Full Stack, Blockchain & AI developer for the past 7 years.
He is skilled in technologies like React, Next.js, Node.js, and PHP/Laravel, Python. He also has strong experience in Blockchain and AI projects.

Dennis is known for solving problems, finding ways to grow for company, and being a helpful team member.
He is creative, calm, and pays attention to details. He enjoys learning from others and improving his skills.

He is now looking for a new job as a Full Stack, Blockchain, and AI developer. Dennis is ready to join a team and start making an impact right away.

Let's get started with Dennis right now!
Thank you.

Service

Front End Development

  • Extensive experience in developing responsive and dynamic frontend applications using React and Next.js, covering industries such as e-commerce, finance, education, customer management, real estate, and blockchain.
  • Proficient in pixel-perfect conversion of UI/UX designs into fully functional, responsive web applications with a focus on cross-browser and cross-device compatibility.
  • Expert in Next.js development with 5 years of experience utilizing tools like T3 stack, GraphQL, PlanetScale, Prisma, and NextAuth for building scalable and high-performance applications.
  • Strong expertise in React animations, implementing complex interactions using libraries like D3.js and other charting tools, with some knowledge of Three.js for 3D visualizations.
  • Deep understanding of modern UI/UX principles, including mobile-first design, SEO, and performance optimization to ensure seamless user experiences and high search rankings.

Back End Development

  • Extensive experience in Node.js, specializing in Express and Nest.js frameworks, with expertise in building robust RESTful APIs and GraphQL endpoints for scalable backend systems.
  • Successfully integrated a variety of third-party APIs, including Calendly, Zoom SDK, Coinbase, Slack Volt, SOAP, and Swell, among others, to enhance application functionality and user experience.
  • Proficient in Laravel, leveraging modern tools and technologies such as Laravel Mix, Laracasts, Livewire, Laravel Nova, and Inertia.js to develop high-performance and secure backend solutions.
  • Hands-on experience in Python with FastAPI, as well as data analysis and AI-related tasks using libraries like NumPy, Pandas, and SciPy.
  • Strong focus on building optimized, maintainable, and scalable backend systems with microservice architecture.

Blockchain Area

  • Expertise in cryptocurrency and altcoin creation, with extensive experience in smart contract development using Solidity and Rust.
  • Skilled in building NFT platforms and applications across multiple chains, including Ethereum, Polygon, Solana, and others.
  • Proficient in DeFi and DEX development, with in-depth knowledge of Web3.js, Ether.js, and Wagmi.js for seamless blockchain integration.
  • Extensive experience in developing crypto bridges, enabling seamless interoperability between different blockchain networks by securely transferring assets and data across chains.
  • Experienced in developing and deploying crypto trading bots, leveraging advanced algorithms and blockchain technologies.
  • Familiar with tools and frameworks such as Chainlink, Pinata, Subgraph, MerkleTree, Oracles, and Gas Station Network (GSN) to build efficient decentralized applications.
  • Comprehensive knowledge of the TON network and hands-on experience with trading bot implementations.

AI & Other stuffs

  • Experienced in developing Chrome extensions powered by the GPT-4 model, with seamless integration of OpenAI APIs for advanced functionality.
  • Expertise in web scraping using tools like Puppeteer, Browserless API, and Selenium, ensuring efficient and reliable data extraction.
  • Specialized in developing advanced AI chatbots using GPT, Retrieval-Augmented Generation (RAG), and HuggingFace, tailored for natural, context-aware interactions and seamless API integration.
  • Skilled in fine-tuning Large Language Models (LLMs) with tools like Llama, TensorFlow, and Python, delivering optimized, domain-specific solutions for predictive analytics and NLP tasks.
  • Proficient in modern development practices, including GitHub-based version control, Agile methodologies, and efficient CI/CD pipelines.
  • Skilled in cloud platforms like AWS and Azure and containerized application development and deployment with Docker, Kubernetes...

Experience

Deltek logo

Deltek

Fullstack Developer Intern
  • Gained in-depth knowledge of HTML, CSS, SCSS, Bootstrap, JavaScript, jQuery, PHP/Laravel, and RESTful APIs.
  • Integrated SCSS to organize and modularize stylesheets for better readability and maintainability.
  • Developed UI components and pages using ReactJS with Redux concepts and ECMAScript, converting the application into a Single Page Application with React-Router.
  • Worked on React.js features such as components, forms, events, keys, routers, hooks, and the Context API.
  • Built lightweight RESTful APIs with a Node.js server and the Express.js framework, handling multiple HTTP requests, database scraping for metadata, and performing CRUD operations on a non-relational database.
  • Used Git for version control and collaborated through GitHub, while managing tasks and tracking bugs with JIRA on a daily basis.
  • Tools: React, Node.js, MySQL, Github, Google Map, Jira
June 2017 - Oct 2018
EcoToken logo

Danapay

Full stack & Blockchain Developer
  • Developed complex frontend interfaces for both admin and customer platforms using React.js, Redux, and MUI, with a focus on enhancing performance and user experience.
  • Created the Danapay token using Solidity on EVM-compatible chains and Layer 2 solutions like Polygon, utilizing web3 technologies such as web3.js, ether.js, token exchange, escrow systems, Hardhat, and Gas Station Network (GSN).
  • Implemented a complex mathematical algorithm for the Danapay base token to boost the popularity of candidates within the platform, integrated KYC features using Sumsub for secure user identity verification.
  • Built and deployed advanced smart contracts for token functionality and a token exchange system that operates as a DEX. Participated in integrating the Danapay Bridge with wallet functionality using GSN.
  • Gained hands-on experience in unit testing with Jest and React Testing Library, while using tools like Husky, SonarCloud, and DeepSource for automation, project management, and maintaining well-structured, efficient codebases.
  • Tools: Smart Contract, ERC20, GSN, React/Next.js, Jest, Web3 ...
Mar 2019 - Dec 2021
Cignex logo

EcoToken>

Senior Next.js & Web3 Developer
  • Designed and implemented a modular UI Kit using Next.js and the T3 stack (TypeScript, Tailwind CSS, TRPC), integrating Prisma ORM and TRPC for efficient database management and API development.
  • Developed and deployed NFT smart contracts using Solidity, Remix, and Hardhat, alongside a custom Streamlit UI for managing NFT creation and minting processes.
  • Utilized Wagmi.js for blockchain interactions, enabling seamless wallet connections and user engagement with smart contracts.
  • Integrated Chainlink Oracles for reliable data feeds and utilized Pinata IPFS to store NFT images and retrieve IPFS hashes for minting.
  • Contributed to building scalable APIs and managing complex databases using Moralis and MongoDB to support blockchain applications.
  • Tools: Next.js, T3 stack, Prisma, Tailwind, Subgraph, TRPC, API caching, Web3, NFT, Wagmi.js
Sep 2021 - Dec 2022
Talaqqi logo

RubberFlooring4u

Lead Developer
  • Led the migration of RubberFlooring4U, an e-commerce platform for rubber flooring products, from a traditional Shopify setup to a modern headless CMS architecture.
  • Utilized React/Next.js and Contentful to enhance SEO, optimize site performance, and deliver a seamless user experience.
  • Managed complex content migration and content modeling within Contentful, strategically optimizing content models to align with budget constraints.
  • Implemented advanced optimization techniques, including server-side rendering (SSR) with Next.js and image optimization with Gatsby, improving site speed and SEO.
  • Achieved a 20% increase in user engagement, a 15% reduction in page load times, and secured a 100% SEO score, significantly boosting the platform's overall performance.
  • Tools: React, Next.js, E-commerce, Headless CMS, SEO, CMS, Contentful
Jan 2023 - Dec 2023
Cignex logo

Real Time Feedback>

Full stack & AI Developer
  • Designed and implemented the frontend using React and Next.js, focusing on a modular architecture and leveraging Server-Side Rendering (SSR) and Static Site Generation (SSG) to enhance performance, reduce server load, and improve client-side responsiveness.
  • Developed a scalable backend using the Laravel framework to manage feedback data, user interactions, and admin functionalities, including real-time chat and notification features powered by WebSockets, Laravel Queue, Pusher, and Laravel Echo.
  • Integrated third-party services like Twilio for SMS notifications, Stripe for payment processing, and email notifications, boosting communication and transaction efficiency across the platform.
  • Optimized system performance with Redis and DataDog, reducing data access times and improving query efficiency by 30% through advanced caching strategies and query execution optimization.
  • Played a key role in migrating the project to AWS EC2, addressing deployment challenges with Socket.io components and queue pipelines while using Docker containers to standardize and streamline deployments across environments.
  • Successfully implemented AI-powered features, including a 24/7 AI chatbot for customer support, using RAG, HuggingFace, Python.
  • Tools: React, Laravel, AWS, Next.js, Socket.io, Redis, Twilio, AI ...
Dec 2022 - Feb 2024
Cignex logo

Musical AI>

Senior Full stack & AI Engineer
  • Built user interfaces for the BeMusic project using React/Next.js, uploading and optimizing components in AWS Amplify Studio for better performance and scalability.
  • Used TypeScript to reduce runtime errors, improve code reliability, and enhance collaboration between team members.
  • Implemented multiple user types with secure authorization and authentication flows, including login validation, token-based authentication, and session persistence to improve user experience and reduce bounce rates.
  • Integrated a Python Gradio application for AI audio generation, embedding it into the website and establishing seamless communication with the Laravel backend.
  • Developed and fine-tuned deep learning models for genre and mood classification using spectrogram analysis, improving recommendation accuracy by 30% through model optimization.
  • Tools: React, Node.js, Python, AI, fine Tunning, Huggingface, RAG, Langchain, Llama
Mar 2024 - Nov 2024

Projects

Skills

Front End skills

React
VueJs
Next.js
Typescript
AngularJS

Back End skills

NodeJs
Laravel
Python
Fast-API
NestJS

Database

MySQL
MongoDB
PostgreSQL

Blockchain

Bitcoin
Ethereum
Solana
Cardano
Polygon

Other

Git
AWS
GraphQL
Jira
AI

Education

Far Eastern University

(Manila, Philipines)

Degree: Bachelor of Computer Science

    Relevant Courseworks:

    • Software Development
    • Computer Network
    • Foundations of Algorithms
    • Operating System

Certifications

Contact