const roles
Work History
Apr 2019 – Present
Tokyo, Japan
- Lead project scoping, budget estimation, and delivery for large-scale tourism digital platforms including Kyoto.travel.
- Built EXJ AI Chatbot — a RAG-powered SaaS with vector search, FastAPI backend, and Docker deployment for 24/7 customer Q&A.
- Manage system engineers and developers; conduct code reviews, sprint planning, and agile ceremonies.
- Design secure, scalable architectures across AWS and Alibaba Cloud environments.
- Drive backend API development and system integration for high-traffic international web applications.
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Project Manager, R&D Department
Tappware Solutions Limited
Sep 2015 – Jan 2019
Dhaka, Bangladesh
- Led government and international projects for A2i, Ministry of Finance, and e-learning initiatives.
- Managed development teams using Scrum; delivered E-File, SEIP, TMS, SCS, HSS, PHR, Finman, and Niyog.
- Oversaw system design, technical planning, and developer mentoring for Bangladesh Government clients.
Aug 2012 – Aug 2015
Dhaka, Bangladesh
- Core developer on enterprise products: Core4VoIP Billing, Core4Switch, and AccounticaXL.
- Built scalable backend systems with PHP, jQuery, and MySQL.
- Contributed to CakePHP 3.5.0 as an official open-source contributor.
role_1
Assistant Programmer
Bangladesh University of Business & Technology
Sep 2009 – Feb 2010
Dhaka, Bangladesh
- Developed examination management software for the Controller of Examinations.