
Firas Jday
Senior Full Stack Developer | AI & Blockchain Expert
About Me
Senior Full Stack Developer with 5+ years of experience architecting and delivering scalable web and mobile solutions. Expertise spans AI/ML integrations, smart contract development, cloud architecture (AWS, GCP), and DevOps automation. Proven track record in leading teams, driving performance optimizations, and delivering high-impact projects for startups and enterprises.
Professional Focus
Building scalable web and mobile applications
Integrating AI/ML solutions into production systems
Developing secure blockchain applications and smart contracts
Optimizing cloud infrastructure and DevOps workflows
Languages
Experience
Senior JavaScript Developer & AI Expert
Leading development of AI-powered applications and microservices architecture for enterprise clients.
Key Achievements
- Architected Docker & Kubernetes microservices for zero-downtime deployments
- Built CI/CD pipelines integrating unit, integration & E2E tests
- Led & mentored a team of 5 engineers; established coding standards reducing bugs by 30%
- Developed RAG pipelines with LangChain and fine-tuned GPT-4 chatbots
- Reduced API latency by 45% and improved semantic search precision by 20%
Technologies & Skills
Freelance Full Stack Developer
Delivering end-to-end web and mobile solutions for clients globally, with a focus on blockchain and AI integrations.
Key Achievements
- Delivered 12+ projects with 5‑star client feedback
- Built responsive web & mobile apps (React, Next.js, React Native)
- Developed NFT & staking platforms with Solidity, Hardhat
- Integrated secure auth (OAuth2, JWT) & Stripe payments
Technologies & Skills
Senior JavaScript Developer
Developed data automation solutions and cloud-based applications for enterprise clients.
Key Achievements
- Automated data workflows via Google Apps Script, cutting processing time by 40%
- Built Node.js & PostgreSQL backends on Google App Engine
- Generated dynamic BigQuery dashboards via scripting
Technologies & Skills
Full Stack Developer & Team Lead
Led development of e-tourism platform and managed a team of developers to deliver high-quality solutions.
Key Achievements
- Led agile development of MongoDB/Node.js e-tourism platform; increased booking efficiency by 40%
- Developed analytics tools reducing manual errors by 35%
- Expanded platform usage by 150% through UX optimizations
Technologies & Skills
Credentials
Professional Certifications
JavaScript (Intermediate)
HackerRank • 2023
Node.js (Basic)
HackerRank • 2023
JavaScript (Basic)
HackerRank • 2022
Node.js (Intermediate)
HackerRank • 2023
REST API (Intermediate)
HackerRank • 2023
Skills & Expertise
Technical Skills
Frontend
Backend
AI & Machine Learning
Blockchain
Databases
Cloud & DevOps
Security
Methodologies
Recent Projects

XStake: Bitcoin Staking Platform

Citygo: Urban Carpooling Platform

Traveltodo Flight Booking Module

AIRE: Industrial Real Estate Platform

Google Drive Migration Tool

Room Booking Validation System
Testimonials & Recommendations
Jérémy Rochot
Data Centric Engineer
Jérémy managed FIRAS directly
Firas is a dedicated and passionate developer who becomes unstoppable once he's on a project. As a Senior Full Stack JavaScript Developer specializing in React, React Native, and Google Apps Script, he consistently delivers high-quality, scalable solutions. He's a pleasure to work with and a real asset to any team. I wholeheartedly recommend him for any challenging development role.
ahmed dalhoum
Financial Engineer @ Warden Labs | Top Rated Plus Blockchain developer
ahmed worked with FIRAS on the same team
Firas is one of the most talented Node.js developers I've had the pleasure of working alongside. His technical skills are exceptional, particularly his ability to build robust and efficient solutions. He consistently delivered high-quality work and impressed me with his deep understanding of the Node.js ecosystem. Beyond his technical expertise, Firas is a positive and collaborative team player. I highly recommend him for any team seeking a top-tier Node.js developer!
Shah Fahad
React Native | Next Js
Shah worked with FIRAS on the same team
Firas is a great guy. He is skillful developer handling complex projects building and managing
Maher Mahouachi
Freelance Expert in Google Workspace & AppSheet | Add-on Developer | Team Leader in Automation & SaaS Solutions
Maher managed FIRAS directly
I had the pleasure of working with Firas Jday on several projects, and I can confidently say that he is one of the most talented and dedicated developers I have ever worked with. Firas is not only an expert in Node.js but also an innovative full stack developer with a passion for solving complex problems with clean, efficient code. His expertise in JavaScript and Google Apps Script is unparalleled, and he consistently transforms ideas into innovative solutions, one line of code at a time. Firas possesses a unique ability to break down complex challenges and deliver creative, well-thought-out solutions that truly make a difference. Whether working independently or in collaboration with others, he approaches every task with determination, and his technical knowledge is only matched by his enthusiasm for continuous learning and growth. I highly recommend Firas for any opportunity where top-tier development skills and a problem-solving mindset are needed. He will undoubtedly be a valuable asset to any team or project.
Frequently Asked Questions
I specialize in full-stack JavaScript development with React, Next.js, and Node.js. I also have expertise in AI/ML integration using LangChain and RAG pipelines, as well as blockchain development with Solidity and Web3.js.
Yes, I'm available for freelance projects, particularly those involving complex web applications, AI integration, or blockchain development. Feel free to contact me to discuss your project requirements.
My development process typically involves an initial consultation to understand requirements, followed by planning and architecture design. I use agile methodologies with regular client check-ins, and emphasize clean code, testing, and documentation throughout the development lifecycle.
I maintain clear and consistent communication through your preferred channels (email, Slack, etc.). For project management, I typically use tools like Jira or Trello to track progress and ensure transparency.
Absolutely. I have experience working with clients globally and can adjust my schedule to accommodate different time zones for meetings and deliverables.
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