I’m S.M. Rejuanul Islam, a full-stack developer from Chattogram, Bangladesh, with 4+ years of experience building and shipping production-ready web applications for clients in the US, UK, and Europe. I enjoy owning projects end-to-end—from scoping and clear communication to implementation, deployment, and ongoing improvements—using React/Next.js, TypeScript, and Node.js to deliver fast, reliable products. Lately, I’ve been focused heavily on AI in production: building paid AI SaaS systems with real-time voice agents and multi-agent security layers on Google Cloud. I write and extend agent tooling as part of my daily workflow (including Claude Code work and custom skills), and I’m always looking for remote opportunities—or roles where I can relocate—to keep building useful, real-world software.…

S.M. Rejuanul Islam

Pro

I’m S.M. Rejuanul Islam, a full-stack developer from Chattogram, Bangladesh, with 4+ years of experience building and shipping production-ready web applications for clients in the US, UK, and Europe. I enjoy owning projects end-to-end—from scoping and clear communication to implementation, deployment, and ongoing improvements—using React/Next.js, TypeScript, and Node.js to deliver fast, reliable products. Lately, I’ve been focused heavily on AI in production: building paid AI SaaS systems with real-time voice agents and multi-agent security layers on Google Cloud. I write and extend agent tooling as part of my daily workflow (including Claude Code work and custom skills), and I’m always looking for remote opportunities—or roles where I can relocate—to keep building useful, real-world software.…

Available to hire

I’m S.M. Rejuanul Islam, a full-stack developer from Chattogram, Bangladesh, with 4+ years of experience building and shipping production-ready web applications for clients in the US, UK, and Europe. I enjoy owning projects end-to-end—from scoping and clear communication to implementation, deployment, and ongoing improvements—using React/Next.js, TypeScript, and Node.js to deliver fast, reliable products.

Lately, I’ve been focused heavily on AI in production: building paid AI SaaS systems with real-time voice agents and multi-agent security layers on Google Cloud. I write and extend agent tooling as part of my daily workflow (including Claude Code work and custom skills), and I’m always looking for remote opportunities—or roles where I can relocate—to keep building useful, real-world software.

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Language

English
Advanced
Bengali
Fluent

Work Experience

Founder & Full Stack AI Developer (AI lead qualification SaaS) at BuyerLoop
January 1, 2026 - Present
Built a live, paid multi-tenant SaaS (buyerloop.app) where an AI chat/voice agent engages website visitors, qualifies their needs, and routes enquiries. Designed a multi-agent system for conversation, qualification, follow-up, and recovery; shipped a real-time voice widget with transcript processing; improved answer quality through reviewing real conversations and iterating fixes before release. Developed tenant dashboard, onboarding, reporting, and AI-generated summaries with tenant data isolation via Firestore security rules and domain-locked widgets. Integrated Google Calendar OAuth for follow-ups, scheduled tasks, and Paddle subscription billing; handled production domain/DNS and email deliverability.
Full Stack Developer (Freelance) at Fiverr / Upwork / Contra
May 1, 2023 - Present
Delivered 150+ web applications for startups and businesses across the US, UK, and Europe by owning scoping, delivery, and client communication. Built end-to-end features including React/Next.js interfaces, Node.js APIs, data models, authentication, subscription billing, transactional email, and analytics. Converted Figma designs into pixel-accurate, responsive UIs and reusable component libraries. Deployed and maintained production apps on Vercel with custom domains, DNS setup, and performance/SEO optimizations.
Freelance Entrepreneur at Fiveerr
May 1, 2023 - Present
Delivered 150+ responsive web projects with 100+ 5-star reviews. Translated high-fidelity Figma/PSD designs into production-ready HTML/CSS/JS code. Performed plugin configuration, mobile optimization, and layout QA on diverse client projects. Collaborated with global clients and implemented consistent version control with Git. Maintained strong design fidelity, responsive behavior, and SEO optimization across projects.

Education

B.S. in Computer Science & Engineering (Incomplete) at Premiere University
May 1, 2023 - October 22, 2025
Computer Science and Engineering (coursework) at Premier University
January 11, 2030 - October 28, 2026
Higher Secondary Certificate (Science) at Biggan College
January 11, 2030 - October 28, 2026

Qualifications

Higher Secondary Certificate (HSC) in Science
October 1, 2020 - October 22, 2025
Master HTML and CSS by Building Real World Projects
January 11, 2030 - October 28, 2026
Figma to Webflow Conversion
January 11, 2030 - October 28, 2026

Industry Experience

Software & Internet, Professional Services, Gaming, Wholesale & Distribution, Financial Services, Media & Entertainment
    Developed an e-commerce platform for BTR Bracelets

    Developed an e-commerce platform for BTR Bracelets,
    a lifestyle brand merging tech with daily motivation.

    Completed work: https://www.twine.net/signin

    The goal was simple: Create a seamless shopping experience that reflects the brand’s bold, action-driven energy.

    Focused on:
    -> Clean product showcase with strategic CTAs
    -> Interactive features (NFC tech explanation)
    -> Mobile-first responsive design
    -> Optimized checkout flow
    -> Dynamic FAQ section for customer clarity
    -> Fast-loading pages with smooth navigation
    -> Built to convert visitors into customers while maintaining
    -> the brand’s modern, motivational identity.

    The site balances product storytelling with functionality
    making it easy to browse, understand, and buy.

    AfterLands - Minecraft Server Official Website

    Project Name: AfterLands - Minecraft Server Official Website
    Project Type: Game Website Development AfterLands - Minecraft Server Official Website

    Completed work: https://www.twine.net/signin

    Developed the official website for AfterLands, a Minecraft: Java Edition server combining RPG and Prison gameplay in a post-apocalyptic world. The project focused on key design aspects like detailed UI, responsive layouts, and smooth CSS animations to enhance user experience.

    Features include a language-switching option and seamless cross-device compatibility. Built using HTML, CSS, Bootstrap 5, and JavaScript, translating a static Figma design into a fully functional and engaging website.

    Property Management Website Development

    Project Name: TPG Management Website
    Project Type: Responsive Frontend Development (HTML/CSS/Bootstrap/JS)

    Completed work: https://www.twine.net/signin

    I built a fully responsive, high-performance website for TPG Management, a property management company, based on their detailed Figma design.
    The goal was to transform a static design into a polished, modern, and easy-to-navigate frontend experience.

    What I Delivered
    -> Pixel-perfect conversion of the Figma pages using HTML, CSS, Bootstrap, and vanilla JavaScript
    -> Mobile-first, fully responsive layout across all devices
    -> Optimized page structure for fast load speed and clean user experience
    -> Reusable, scalable components for easy future updates
    -> Cross-browser compatibility and W3C-validated code
    -> Smooth interactions that enhance the user journey without affecting performance

    Impact
    -> The final build gave TPG a professional, dependable online presence that matches the quality of their services. It also allowed their internal team to integrate the frontend into their backend system without any modifications.

    Capbypass Website

    Project Name: CapByPass
    Project Type: Figma to Html Website Development

    Completed work: https://www.twine.net/signin

    Description:
    Developed a modern and responsive website for Cap-By-Pass, a premium data scraping service provider. The site highlights key features like seamless integration, automation benefits, and advanced scraping infrastructure. Built using HTML, CSS, Bootstrap, and JavaScript, ensuring optimized performance, smooth navigation, and cross-device compatibility for a superior user experience.

    I worked closely with the design team and used Figma to translate the wireframes and visual designs into a fully functional website.

    Developed core pages including login, dashboard, and feature sections with a clean user interface.

    The end result was a visually appealing, fast-loading, and fully responsive website that aligns with the brand’s innovative edge.