Hi! I’m Saifullah Chowdhury, a Frontend Engineer and Full-Stack Developer with over 4 years of experience building fast, reliable, and scalable web applications. I’ve worked at Airwork.ai, where I led the frontend development of a global hiring platform serving over 10,000+ users, focusing on performance, clean architecture, and seamless UX. Before that, at AcciGone, I developed IoT-enabled safety dashboards that turned complex sensor data into clear, actionable insights. I’m also the founder of Dellly, a small development studio where I’ve built multiple client projects, and the creator of Festivo.io, a full-featured event management SaaS for ticketing, analytics, and payments. What sets me apart is my unique blend of design sense and technical precision. I care deeply about both the aesthetic and the functionality of things. I write maintainable, well-structured code, collaborate effectively with teams, and always aim to deliver high-quality products on time. Core Skills: React, Next.js, TypeScript, Node.js, Tailwind CSS, MongoDB, PostgreSQL, Prisma, REST APIs, UX/UI Design If you’re looking for someone who can turn your product idea into a smooth, scalable, and visually engaging experience — I’d love to collaborate.…

Saifullah Chowdhury

Hi! I’m Saifullah Chowdhury, a Frontend Engineer and Full-Stack Developer with over 4 years of experience building fast, reliable, and scalable web applications. I’ve worked at Airwork.ai, where I led the frontend development of a global hiring platform serving over 10,000+ users, focusing on performance, clean architecture, and seamless UX. Before that, at AcciGone, I developed IoT-enabled safety dashboards that turned complex sensor data into clear, actionable insights. I’m also the founder of Dellly, a small development studio where I’ve built multiple client projects, and the creator of Festivo.io, a full-featured event management SaaS for ticketing, analytics, and payments. What sets me apart is my unique blend of design sense and technical precision. I care deeply about both the aesthetic and the functionality of things. I write maintainable, well-structured code, collaborate effectively with teams, and always aim to deliver high-quality products on time. Core Skills: React, Next.js, TypeScript, Node.js, Tailwind CSS, MongoDB, PostgreSQL, Prisma, REST APIs, UX/UI Design If you’re looking for someone who can turn your product idea into a smooth, scalable, and visually engaging experience — I’d love to collaborate.…

Available to hire

Hi! I’m Saifullah Chowdhury, a Frontend Engineer and Full-Stack Developer with over 4 years of experience building fast, reliable, and scalable web applications.

I’ve worked at Airwork.ai, where I led the frontend development of a global hiring platform serving over 10,000+ users, focusing on performance, clean architecture, and seamless UX. Before that, at AcciGone, I developed IoT-enabled safety dashboards that turned complex sensor data into clear, actionable insights.

I’m also the founder of Dellly, a small development studio where I’ve built multiple client projects, and the creator of Festivo.io, a full-featured event management SaaS for ticketing, analytics, and payments.

What sets me apart is my unique blend of design sense and technical precision. I care deeply about both the aesthetic and the functionality of things. I write maintainable, well-structured code, collaborate effectively with teams, and always aim to deliver high-quality products on time.

Core Skills: React, Next.js, TypeScript, Node.js, Tailwind CSS, MongoDB, PostgreSQL, Prisma, REST APIs, UX/UI Design

If you’re looking for someone who can turn your product idea into a smooth, scalable, and visually engaging experience — I’d love to collaborate.

See more

Skills

Experience Level

JavaScript
Expert
CSS
Expert
Node.js
Expert
AWS
Expert
Express
Expert
Figma
Expert
GitHub
Expert
HTML5
Expert
PostgreSQL
Expert
React JS
Expert
Tailwind
Expert
TypeScript
Expert
Jira
Expert
See more

Language

English
Fluent
Bengali
Advanced

Work Experience

Product Contributor & Frontend Engineer at Airwork AI
March 2, 2025 - October 17, 2025
Contributed to frontend engineering for AI-powered safety software. Participated in frontend decisions, integrated sensor data, and connected dashboards. Merged sensor data with real-time dashboards, and supported user-experience improvements; integrated sensor data with dashboard features.
Product Contributor & Frontend Engineer at Airwork AI
March 1, 2025 - October 17, 2025
Helped build IoT-enabled web applications to track vehicle safety systems; contributed to frontend design decisions based on user research; integrated sensor data with dashboard features for real-time alerts.
Founder / Product Manager at Dellly
August 2, 2023 - Present
Founder/PM leading product strategy, roadmaps, and end-to-end delivery for a lean software studio delivering tailored SaaS solutions. Responsible for user research, product discovery, feature prioritization, MVP planning, and cross-functional leadership across engineering, design, and GTM. Built production-grade platforms and led UX/UI design, analytics, and onboarding.
Full Stack Engineer & Founder (Consulting) at Delly
August 1, 2023 - Present
Developed end-to-end SaaS platforms and event management systems; built frontend flows, ticketing, analytics, and attendee management; implemented REST APIs with Node.js/Express; integrated PostgreSQL and AWS S3; supported secure payments using SSLCommerz; collaborated with product and design teams; delivered client projects with 95% on-time completion using Agile methods.
Founder / Product Manager at Delly
August 1, 2023 - Present
Founded and led a lean product studio delivering tailored software solutions for global founders; led product strategy, roadmaps, and MVP planning; collaborated with cross-functional teams including frontend engineers and designers.
Software Engineer at ACciG One
March 1, 2022 - October 17, 2025
Designed mechanical systems for autonomous underwater rover hardware; contributed to hardware-software integration; participated in prototype development and testing.

Education

Bachelor of Science in Computer Science and Engineering at BRAC University
January 11, 2030 - December 1, 2021
Higher Secondary Certificate (Science) at Chattogram College
January 11, 2030 - January 1, 2016
B Sc in Computer Science and Engineering at BRAC University
January 11, 2030 - December 1, 2021
Higher Secondary Certificate (Science) at Chittagong College
January 11, 2030 - January 1, 2016
BSc in Computer Science and Engineering at BRAC University
January 11, 2030 - December 1, 2021

Qualifications

Science Certification
January 1, 2014 - December 31, 2014

Industry Experience

Software & Internet, Professional Services, Media & Entertainment, Education, Non-Profit Organization
    Festivo.io — All-in-One Event Management & Ticketing Platform

    Festivo.io is a full-featured event management SaaS built to simplify how organizers create, promote, and manage events. It brings everything into one seamless platform — from ticket sales and attendee registration to analytics and payouts.

    With Festivo.io, organizers can:

    Create events with custom ticket types, pricing tiers, and registration forms.

    Manage real-time ticket sales and track attendee engagement through powerful analytics dashboards.

    Accept secure payments via SSLCommerz, bKash, and Nagad.

    Generate branded PDF tickets and manage check-ins smoothly at the venue.

    Access detailed insights on revenue, attendees, and event performance — all in one place.

    Built using Next.js, Node.js, and PostgreSQL (via Prisma), Festivo.io is designed for speed, security, and scalability. It’s not just a tool — it’s a complete ecosystem for organizers to grow their community, host better events, and deliver exceptional attendee experiences.