Available for new projects · Dhaka, Bangladesh · remote
MD Rifatul Islam
Production systems for product teams. The work stays up after launch.
Model APIs, workers, and queues so AI features behave like the rest of the product.
02Stripe, CRM, Twilio, and webhooks, with auth and retries inside your app.
03Retrieval and tool-using agents grounded in your docs and services.
04Auth, tenancy, Postgres, and deploys on GCP, AWS, or Cloudflare.
Projects I take
Send a blank brief, a prototype, or a product that already has users. I take web, SaaS, ecommerce, mobile, automation, APIs, and AI work through to production.
Email the project as it is today: rifatul.dev@gmail.com. I reply within 24 hours.
Case studies
Four production systems, each with a write-up.
Security assessment and delivery for an AI SaaS: Chrome extension for incident communication, Academy with OpenAI-graded simulators, config-driven entitlements, and dual-product subscription schema.
Full-stack internal operations platform for a loyalty and rewards fintech. Manages banks, merchants, offers, RBAC, and a transaction ledger that powers consumer POS apps through secure APIs on GCP.
Agentic RAG monorepo: NestJS + LangChain.js document Q&A with Ollama and Qdrant, Next.js upload and chat UI, and an MCP server layer so Cursor and Claude can call business tools alongside private doc search.
Built a full-stack SMS marketing platform for a wellness brand: React dashboard on Cloudflare Pages, Worker API with queues, ActiveCampaign tag audiences, and 10DLC-compliant Twilio routing. Fixed analytics drift so replies (33) and opt-outs (25) matched Twilio Insights on a 2,383-contact blast.
30-min free call to understand your goals, scope, timeline, and budget.
Milestone plan via Upwork/Fiverr or direct contract. Fixed price or hourly.
Agile sprints with demos, code reviews, and staging previews you can test.
Deployment, documentation, handoff, and optional ongoing maintenance.
Client proof
Short notes from people I have shipped with.
“Rifat delivered exactly what we needed ahead of our launch. He ran a full security assessment on our AI platform, fixed critical issues across the Chrome extension and Academy, and shipped phased milestones on time with clear reports after each phase. He understands Firebase, OpenAI integrations, and subscription logic at a senior level. Communication was strong throughout, and we now have a secure foundation and a roadmap we trust. I would hire him again without hesitation.”
“We have worked together. Rifatul Islam is a hard working, problem solving team player. He took lead in many projects and solved crucial technical issues. He is always ready to dive into new technology / skills. He can complete his task in proper due time. He is responsible, attentive and always respectful to others. He communicates with his team to archive the outcome of the projects. I will look forward to work with him and pray for his bright future.”
“He is very passionate to meet the requirements of schedule and quality always. I'm really happy to work with him.”
Before you hire
A short note is enough: the goal, the timeline, and a budget range. I reply within 24 hours.
GMT+6 · remote