Things I've Built
That Actually Ship.

12+ years across AI engineering and full-stack web development — AI agents, production APIs, immersive frontends, and robust backends. Filter by category to explore.

All Projects.

Lead Generation Agents

Automated Lead Generation Agents

An AI-powered multi-agent system that automates prospect identification, qualification, and personalised outreach across multiple channels. View project ↗

  • AI Agents
  • LangChain
  • FastAPI
  • PostgreSQL
Groundwater Monitoring Agents

Groundwater Monitoring Agents

Intelligent monitoring agents that analyse groundwater sensor data in real time, trigger automated alerts, and generate scheduled compliance reports. View project ↗

  • AI Agents
  • IoT
  • Python
  • Data Analysis
Resume to Job Compare Agent

Resume to Job Compare Agent

An AI agent that parses resumes and job descriptions, then produces detailed match scores, gap analysis, and tailored improvement suggestions. View project ↗

  • LLMs
  • NLP
  • FastAPI
  • React
Websouq

Websouq

An AI-powered all-in-one platform where users build websites, set up professional email accounts, and manage hosting — all from a single interface. websouq.ai ↗

  • Next.js
  • AI Generation
  • DNS
  • Email Hosting
Elaview

Elaview

An AI-powered ad-space marketplace connecting advertisers with physical and digital inventory — built with a smart matching engine and analytics dashboard. elaview.com ↗

  • Next.js
  • FastAPI
  • AI Matching
  • PostgreSQL
Company Intelligence

Company Intelligence

A secure private document analyser and Company Brain system enabling teams to query internal knowledge in natural language with role-based access control.

  • RAG
  • RBAC
  • LangChain
  • Pinecone
AI Cognitive

AI Brain

An innovative R&D platform that digitally models human cognition and transfers accumulated knowledge to future generations.

  • LLMs
  • Knowledge Graphs
  • Vector DB
  • Python
Cloudcastles

Cloudcastles

WebbyAwards #1 gaming website of 2023 — an immersive 3D browser experience with real-time WebGL rendering and cinematic animations. cloudcastles.gg ↗

  • WebGL
  • Three.js
  • GSAP
  • React
Simpson Property

Simpson Property

A premium real estate platform with advanced property search, interactive maps, and high-fidelity listing showcases. simpsonpropertygroup.com ↗

  • React
  • Next.js
  • Google Maps
  • Tailwind
AUCD

AUCD

An accessible, content-rich website for a national disability community organisation — built to WCAG 2.1 AA standards with a focus on clarity and usability. aucd.org ↗

  • WordPress
  • WCAG 2.1
  • PHP
  • CSS
Wrightchat

Wrightchat

A real-time team chat application with live messaging, file sharing, threaded replies, and multi-channel workspace management. wrightchat.com ↗

  • React
  • WebSockets
  • Node.js
  • MongoDB
DIG Official

DIG Official

A high-performance gaming company website featuring dynamic content, live event feeds, and cinematic scroll-driven animations. digitalinsightgames.com ↗

  • React
  • GSAP
  • WebSockets
  • Node.js
Email Digest Management

Email Digest Management

A scalable digest system that aggregates, personalises, and schedules newsletter content delivery across large subscriber lists. capstonedc.com ↗

  • Node.js
  • Queue System
  • PostgreSQL
  • Redis
TN Nursery

TN Nursery

A full-stack e-commerce backend for a large-scale plant nursery — handling inventory management, order processing, and shipping integrations. tnnursery.net ↗

  • PHP
  • Laravel
  • MySQL
  • REST API
Moodtek

Moodtek

A mood-tracking and analytics backend that generates personalised wellbeing insights and trend reports from user-submitted data. moodtek.com ↗

  • Python
  • FastAPI
  • PostgreSQL
  • ML Models
Tendenci

Tendenci

Backend development and customisation for the Tendenci open-source nonprofit management platform — extending membership, events, and reporting modules. tendenci.com ↗

  • Django
  • Python
  • PostgreSQL
  • REST API
Glix Payment API

Glix Payment API

A secure payment processing API handling transactions, refunds, and reconciliation at scale — with PCI-compliant architecture. glix.com ↗

  • REST API
  • Node.js
  • Stripe
  • PostgreSQL
Shipping Rate API

Shipping Rate API

A multi-carrier shipping rate calculation API delivering real-time quotes, label generation, and tracking across major logistics providers.

  • REST API
  • Node.js
  • Carrier Integration
  • Redis
Email Verification API

Email Verification

A high-speed bulk email verification API with multi-layer validation: syntax checking, MX record lookup, and SMTP handshake verification.

  • REST API
  • DNS
  • SMTP
  • Python
Barcode Lookup API

Barcode Lookup API

A comprehensive barcode lookup API returning full product details, pricing, and category data from a global product database.

  • REST API
  • PostgreSQL
  • Redis
  • Node.js
Billing API

Billing API

A subscription and usage-based billing API with automated invoicing, dunning management, and webhook delivery for downstream integrations.

  • REST API
  • Stripe
  • Webhooks
  • PostgreSQL

The Journey.

  1. Oct 2023 – now

    Senior Generative AI Application Engineer

    EVU — New York | Remote

    • Led architecture and delivery of 3 production AI-powered SaaS platforms: an AI website builder (websouq.ai), an ad-space marketplace (elaview.com), and a therapist booking platform (sparina.com).
    • Built a secure private document analyser for government clients and a Company Brain system enabling natural language querying over internal knowledge.
    • Managed and mentored a cross-functional engineering team of 9 across backend, AI, and frontend disciplines.
  2. Feb 2022 – Sept 2023

    Lead Full-Stack Architect

    DIG — Los Angeles | Remote

    • Architected a high-performance real-time game backend using WebSockets and Node.js, supporting 10k+ concurrent connections.
    • Designed a secure AWS API gateway with authentication and rate limiting for external clients.
    • Led cloud infrastructure migration with 99.9% uptime during high-traffic game launches.
  3. Dec 2017 – Feb 2022

    Senior Web Engineer

    Wordsphere — New York | Remote

    • Built enterprise web solutions with PHP and MySQL, optimising legacy codebases for performance and maintainability.
    • Automated deployment using CI/CD pipelines, reducing release time from hours to minutes.
  4. Sept 2015 – Nov 2017

    Backend Developer

    Pixelomatic — Dhaka | Onsite

    • Developed secure REST APIs and backend logic using PHP/Laravel and Node.js frameworks.
    • Optimised database queries and server performance, improving speed by nearly 30%.
  5. Jul 2012 – Aug 2015

    Frontend Developer

    Hei Homes — Singapore | Hybrid

    • Built responsive, dynamic real estate platforms using React and modern JavaScript.
    • Enhanced UX and site performance, increasing user engagement by over 25%.

What People Say.

  • "Rajibul built our document intelligence system from scratch in six weeks — something our internal team had been scoping for six months. The RAG pipeline he designed cut legal research time by over 70%. He doesn't just write code; he understands the business problem first."
  • "Working with Rajibul on our SaaS platform was one of the smoothest engineering collaborations I've had. He pushed back when the scope was vague, delivered on time every sprint, and the codebase he left behind is genuinely maintainable — which is rare."
  • "I hired Rajibul to help integrate AI into our customer support workflow. He didn't just set up the API calls — he designed an entire triage architecture that now automatically resolves 60% of tickets. Our support team went from overwhelmed to actually enjoying their work."
  • "Rajibul led our frontend team for two years and transformed how we shipped product. He introduced processes, pushed for quality, and still wrote some of the best code on the team. Our release cadence doubled and defect rate dropped by half in his first year."