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Dennis P. StephensSoftware Engineer
 * About
 * Service
 * Experience
 * Projects
 * Certifications
 * Recommends
 * Skills
 * Education
 * Contact
 * Resume

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HI, I'M DENNIS P. STEPHENS.



BLOC|

I'M MAINLY WORKING AS A FULL STACK & BLOCKCHAIN DEVELOPER FOR 8 YEARS UNTIL NOW.
MY MAJOR SKILLS ARE REACT, NEXT.JS, NODE.JS, PHP/LARAVEL AND GAINED GREAT
EXPERIENCE WITH EVM, SOLANA, CARDANO ECOSYSTEM AND SO ON.
MY ABILITY TO IDENTIFY OPPORTUNITIES FOR GROWTH AND NAVIGATE COMPLEX CHALLENGES
HAS EARNED ME A REPUTATION AS A TRUSTED ADVISOR AND A VALUABLE ASSET TO ANY
ORGANIZATION.
I CAN SAY, I AM CREATIVE, CALMLY AND LOVING LEARNING FROM OTHERS, AND
DETAIL-FOCUSED PERSON. MY HOBBY IS FOOTBALL, AND SOMETIMES HAVING A COMPUTER
GAME WITH FRIENDS.
NOW, I AM ACTIVELY LOOKING FOR A NEW JOB OPPORTUNITY AS A FULL STACK &
BLOCKCHAIN DEVELOPER, AND I AM READY FOR STARTING WORK FOR YOU IMMEDIATELY!
THANK YOU!


SERVICE

Front End Development

 * Have some experience in UI/UX Design using Adobe XD, Figma, Sketch, Adobe
   Photoshop.
 * Very good experience in developing frontend using React including several
   projects like e-commerce, financial, education, customer management, real
   estate, Blockchain area.
 * Professional Next.js developer having 4 years of experience with T3 stack,
   GraphQL, Planet Scale, Hygraph, NextAuth, Stripe integration and so on.
 * Rapid growing Vue.js developer having Vue3, Vuex, Vuetify, Nuxt.js and Quasar
   framework.
 * Very good sense of UI/UX, well-known component concept, first mobile design
   making, SEO, performance and optimization
 * React animation expert, some knowledge of three.js, chart implemention using
   D3.js and several chart libraries...

Back End Development

 * Professional in Node.js especially Express and Nest.js, familiar with Restful
   API and GraphQL, integrated several third party API like Calendly API, Zoom
   SDK, Coinbase API, Slack Volt API, SOAP API, Swell API and so on.
 * Laravel Expert having modern technology like Laravel Mix, Laracast, Livewire,
   Laravel Nova, Inertia and so on.
 * Some experience in Python and Fast API, NumPy, Pandas, and SciPy.

Blockchain Area

 * Cryptocurrency & Altcoin creation
 * Smart Contract Development using Solidity and Rust
 * Token creation on ETH, BSC, MATIC, and Cardano
 * NFT creation on Ethereum, Polygon, Solana, and other chains
 * Decentralized exchanges (Pancake swap, Uniswap, etc)
 * Token staking, rewards tracking dashboards, Farming
 * Web3.js, Ether.js, usedApp, Wagmi
 * Cardano, Plutus, Lusid, Wallet development, Chainlink, Pinata
 * Subgraph, MerkleTree, Oracle, GSN
 * Contract Testing, audit ...

AI & Chrome extension development & Scrapping

 * Have experience in developing Chrome extension which is AI-generated bulk
   messaging tool for recruiters on LinkedIn using GPT-4 model
 * Scrapping expert using Puppeteer, Browserless API, Selenium
 * GPT, Langchain, Soaak, AI ChatBot Development


EXPERIENCE

THE STUDIO BRIDGE

Full Stack Developer Intern
 * Collaborated closely with designers to create clean and intuitive, responsive
   interfaces for web applications, utilizing various front-end libraries and
   techniques such as React.js, Tailwind CSS, Typescript, antD and so on.
 * Participated in developing backend side using Node.js/Express for a hotel
   booking and real estate project focused on architecture design, Restful API,
   payment gateway integration, real-time communication using Socket.io,
   advanced filtering and so on.
 * Additionally, utilized ArcGIS and PostGIS to integrate Google Maps
   functionality, allowing for seamless display of event locations and
   geospatial data.
 * Gained deep Understanding of blockchain fundamentals, governance,
   cryptography, ZK-knowledge proofs, decentralization, blockchain business
   models, OpenZeppelin and so on.
 * Tools: React, Node.js, MySQL, Express.js, Socket.io, Github, Google Map,
   Typescript

June 2015 - Jan 2018

Danapay

Frontend & Web3 Developer
 * Danapay is secure payment solutions developed using advanced blockchain
   technology between Africa and Europe countries. I developed complex frontend
   interfaces in both admin and customer side using React.js, Redux,
   reduxjs/toolkit, MUI, and focused on improving performance side.
 * As a web3 developer, created Danapay token using Solidity in EVM-compatible
   chains and Layer2 like Polygon and experienced web3 technologies like
   web3.js, ether.js, complex Mathematical Algorithm, token exchange and escrow,
   Hardhat, GSN and so on.
 * Implemented complex mathematical algorithm to Danapay base token for
   concentrating popularity of candidates to Danapay, and implemented KYC to
   unique token for users using zero-knowledge technology.
 * Built and launched complex smart contracts for token and token exchanged
   system to work as DEX, and in the final of working with company, take
   participated in wallet integration with Danapay Bridge using GSN.
 * Experienced in unit testing using Jest, react-testing library and worked with
   Husky, SonarCloud and Deep source for automation project management and
   well-designed code
 * Tools: React, Redux, Node, MUI, Blockchain, Ethereum, Polygon, Web3,
   Solidity, AWS, DEX, Hardhat, GSN, zero-knowledge, Jest, Husky, Sonarcloud,
   Deep Source...

Mar 2018 - July 2021

Talaqqi

Smart Contract developer
 * Established a successful trading record of 100 ETH on OpenSea platform, and
   generated a sales revenue of 400 ETH through successful marketing and sales
   strategies.
 * Developed a utility feature to generate NFT metadata and images and upload
   them to Pinata IPFS server using Python, MoviePy and ffmpeg.
 * Penetration Testing, Fuzz Testing, Invariant Testing with Foundry, Truffle,
   Hardhat | Manual Smart Contract analysis | Static Analysis with Slither.
 * Expertise in smart contract auditing for optimal scalability, adaptability,
   and efficiency.
 * Tools: Solidity, Ethereum, Opensea, Metadata, Pinata IPFS, MerkleTree,
   Python, FFMpet, Testing, Hardhat, Contract audit...

Dec 2020 - Sep 2021

FunToken

Senior Blockchain & AI solutions Engineer
 * Built and launched upgradable Smart Contracts for XFUN Token using standard
   openzeppelin upgradeable ERC20 contract XFUN ՞ Governance Token in all casino
   games.
 * Implemented GSN for meta transactions into smart contracts so that users
   don’t need to pay for gas fees with MATIC.
 * Escrow concepts and ideas are added in to the XFUN token for the integration
   with Betting Token Ex: For Betting Games i.e. Utilities of XFUN cover all
   over the casino games including betting games.
 * Built bridge to exchange the tokens- XFUN, implemented several
   functionalities for bridge into the XFUN token contract including gas fee
   calculation in FUN or XFUN tokens.
 * Built bridge UI & Google Cloud & Controller & Bridge Asset Smart Contracts,
   setup own relay server for GSN.
 * Tools: Smart Contract, ERC20, GSN, Polygon, Betting game logic, GPT,
   Langchain, AI...

Mar 2021 - Apr 2022

GhostMarket>

Senior Next.js & Web3 Developer
 * Worked as a lead developer for core user experiences including marketplace
   aggregation, purchase flow, selling flow, as well as API caching and modular
   UI Kit, Wagmi for blockchain interfacing, and so on .
 * Developed both admin side and user side using Next.js and T3
   stack(Typescript, Tailwind, TRPC).
 * Used Prisma and TRPC for providing ORM for SQL queries, and used Subgraph for
   extracts data from blockchain and processing.
 * Implemented complex process with 3 levels of whitelists, and future areas and
   perks can be unlocked by the community through roadmap activation process.
 * Built an AI chatbot for providing all day 24/24 customer support using AI,
   GPT model, Python and Langchain in admin side.
 * Tools: Next.js, T3 stack, Prisma, Tailwind, Subgraph, TRPC, API caching,
   Web3, AI, Chatbot, Langchain

Dec 2021 - Feb 2023

RFLXT>

Founding Full stack & Blockchain Engineer
 * Writing Smart contracts on Cardano Blockchain using Plutus apps, Plutarch and
   off-chain using Lucid for making Saturn wallet.
 * Experience in Python Web3, Smart contracts Solidity with Remix, deploying NFT
   smart contract with Streamlit UI, and also worked with Worked with Geth,
   Ganache, Infura API for Kovan testnets, Faucets.
 * Worked with Chainlink Oracles data feeds, also forked with Piñata IPFS to
   store NFT pics and get the IPFS numbers to mint.
 * Used Wagmi for web3 integration, and generated AI pics for NFT from
   pre-trained models of Style Transfer.
 * Played a vital role in constructing scalable APIs and managing complex
   databases using Moralis and MongoDB. Further enhancing user experience, led
   the development of account abstraction, seamlessly linking wallet addresses
   to email accounts to combine the convenience of web2 with the advanced
   capabilities of web3.
 * Tools: Cardano, Plutus, Plutarch, Lucid, Python, Remix, Streamlit UI,
   Ganache, Infura API, Chainlink Oracle, Pinata, Moralis ...

Aug 2022 - June 2024


PROJECTS

HouseBuyersOfAmerica

Real Estate project made by React.js and Node.js

Danapay Customer Side

Danapay financial project for Customers

Danapay Admin Side

Danapay financial project for Administrators

Koda NFT marketplace

NFT marketplace on KODA

Airdrop Minting project

Best minting page having 3 levels of whitelist

RoosterWars Blockchain Game

Blockchain Game for fighting with roosters

Hirepeople Chrome Extension

AI-generated bulk messaging tool for recruiters on Linkedin using GPT-4 model

Eco Token project

Eco-friendly Marketplace on Regen network

GhostMarket project

NFT Marketplace (The Web3 play-to-own marketplace)

Talaqqi project

Education project for Arabic Educator

Mapbox project

CanterPower System company's generator management mapbox project

RFLXT project

RFLXT connects talent & their Digital Doubles to their communities.


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


EDUCATION

Far Eastern University

(Manila, Philipines)

Degree: Bachelor of Computer Science


Relevant Courseworks:

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




CERTIFICATIONS




RECOMMENDS

Ahmad Naser

Co-founder of GreenBackend company

Accomplishments
Dennis is really a great problem solver, I've impressed by his ability to solve
complicated technical problems with the minimum amount of management, he is
really super learner and an effective implementor, write your requirements and
he will make sure it gets done, that's the ultimate factor in the reliable
developers, Dennis is basically one of them and I highly recommend him in any
full-stack development job.

Aurélien Monchambert

COO of Hirepeople company

Accomplishments
As the COO of HirePeople company, I had the pleasure of working with Dennis on a
project where he showcased his exceptional React skills and expertise in
building a project from scratch. His work ethic and dedication to delivering
high-quality work quickly were outstanding. He also contributed significantly to
the development of a Chrome extension for our company, which helped us to
achieve our business goals. I highly recommend Dennis to anyone looking for a
reliable, skilled, and efficient web developer.

Wassim Azirar

CTO of Hirepeople company

Accomplishments
I've worked with Dennis on several frontend development projects using React,
TypeScript, and Redux. I believe Dennis has potential to develop into a great
developer with guidance. I recommend them for projects where clear communication
and collaboration expectations are established.

Victor Niculae

Senior Software Engineer

Accomplishments
I have had the pleasure of working closely with Dennis and can attest to their
exemplary skills in React and Blockchain development. Their passion for
delivering top-notch solutions is evident in their exceptional work and
demonstrated technical proficiency. Dennis has an innate ability to quickly
understand and navigate complex problems with ease, and their ability to
collaborate with cross-functional teams is a testament to their exceptional
communication skills. I strongly recommend Dennis to any organization looking
for a seasoned developer with a track record of success.

Clive Richardson

Senior SQL Server DBA Contractor at iPSL

Accomplishments
Dennis is one of the most professional freelancers I've ever worked with. I've
been working with many freelancers for decades and I can safely say that Dennis
is a terrific freelancer. His capacity to comprehend the specific demands of the
other party, as well as his honesty, are two of his greatest qualities. I am
confident that he will meet and exceed expectations.

Ludo Hoffstetter

UI/UX designer

Accomplishments
Dennis consistently delivered high-quality work as a Front-End Developer and
went above and beyond to ensure that my designs were implemented flawlessly. As
a UX designer, it was important for me to collaborate with a developer who not
only had a strong understanding of technical aspects, but also had an eye for
detail and a commitment to user experience. Overall, I highly recommend Dennis
as a Front-End Developer, his technical expertise and dedication make him a
valuable asset to any project.

Valentin Sotov

Product Owner

Accomplishments
Thank you Dennis for your invaluable help to our AMBER project. Although we have
never met in real life and worked only remotely, I really appreciate your
professionalism and competence. Your punctuality and diligence make me believe
that you are a good man and a reliable partner. I am sure that you will have a
great future and I hope that you will help our company more than once. I
sincerely wish you professional growth and appreciation from future partners.

Julian Patton

Data Science Engineer

Accomplishments
Dennis was one of the pivotal members of our startup J-Retro Designs. His front
end experience was superb and he was a very effective communicator. Dennis
expresses a degree of professionalism during our Slack channel meetings and
worked very well with our other backend developers. I was honored to collaborate
with Dennis and hope to collaborate in the near future. I highly recommend him
for any project, give Dennis a list of tasks and he will accomplish each task
and ask questions to make sure the best quality work is delivered.

Randy Christie

President & CEO at NOAH Solutions

Accomplishments
We needed to assemble a dev team on short notice and Dennis became a key
component. He had a great can do attitude that allowed us to complete a rush
project on time.


CONTACT

+1 920 796 4137

dennis1125stephens@gmail.com

github.com/Wuffle1125

https://www.linkedin.com/in/dennis1125stephens/

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