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Tanvir Ahamed

Experience

From Python and Django in Dhaka to AI-powered applications in Tsukuba: backend and full-stack engineering since 2020.

Timeline

Newest first.

From Dhaka to Tsukuba4,920 km in a straight line
Dhaka
Miyazaki
Tsukuba
  1. Dhaka2015 – 2023North South University, eSRD-Lab, B-JET
  2. Miyazaki2024 – 2025Have a Talk Inc.
  3. Tsukuba2025 –AIZOTH Inc.

  1. Jul 2025 – Present

    Current role

    Software Engineer at AIZOTH Inc.

    Tsukuba, Japan

    Developing AI application features across the stack, from document-grounded retrieval and agent workflows to backend services, web interfaces, and cloud deployment.

    AI engineering

    • Integrating large language models into application features and backend services.
    • Developing AI agents and automated, agentic workflows.
    • Implementing retrieval-augmented generation (RAG) for focused, document-grounded use cases.
    • Bringing LLM-powered coding agents into the team's day-to-day development workflow.

    Backend

    • Developing Python backend services and REST APIs with FastAPI.
    • Writing the application logic and integrations behind AI-powered features.
    • Connecting frontend applications to backend services deployed on Google Cloud Run.

    Google Cloud infrastructure

    • Developing and operating services on Cloud Run, Vertex AI and Compute Engine.
    • Working with Cloud Build for application build and deployment workflows.

    Frontend and full stack

    • Developing web application interfaces with Flutter, Dart and other frontend technologies.
    • Contributing to AIZOTH's AI-powered software products, including the Flutter-based Multi-Sigma® platform.
    • Python
    • FastAPI
    • LLMs
    • AI agents
    • RAG
    • Flutter
    • Dart
    • Cloud Run
    • Vertex AI
    • Compute Engine
    • Cloud Build

  2. Mar 2024 – Jun 2025

    1 yr 4 mos

    System Engineer at Have a Talk Inc.

    Miyazaki, Japan

    Developed Laravel and Ruby on Rails applications, with responsibility for REST APIs, multi-factor authentication, database performance, and deployment on AWS and Linux.

    Backend and APIs

    • Developed and optimized backend systems with Laravel (PHP) and Ruby on Rails.
    • Designed and built REST APIs.
    • Automated workflows, including email notifications and Slack integrations.

    Authentication

    • Implemented multi-factor authentication with WebAuthn and SMS links.

    Data and reliability

    • Optimized database performance on PostgreSQL and MySQL with indexing, Redis caching and query tuning.
    • Wrote unit tests and test cases, and conducted code reviews.
    • Deployed and maintained applications with Docker on AWS and Linux servers.
    • Laravel
    • Ruby on Rails
    • PostgreSQL
    • MySQL
    • Redis
    • WebAuthn
    • Docker
    • AWS
    • Linux

  3. Mar 2023 – Sep 2023

    7 mos

    Trainee at B-JET Training Program

    Dhaka, Bangladesh, professional training program

    Professional training for engineers preparing to work in Japan: Japanese language and business etiquette, software engineering fundamentals, and hands-on outsourced development work.

    Japanese and professional practice

    • Japanese language training and Japanese business etiquette.
    • Teamwork and cross-cultural communication for working with Japanese teams.

    Engineering

    • Software engineering fundamentals through structured training, and programming contests.
    • Outsourced software development in Python, covering image analysis and data analysis.
    • Python
    • OpenCV
    • pandas

  4. Oct 2020 – Feb 2023

    2 yrs 5 mos

    Programmer at eSRD-Lab

    Dhaka, Bangladesh

    Built web platforms for virtual internships, e-learning, workshops and clinical data management, with REST APIs, authentication, data visualization and scraping.

    Backend

    • Designed and built an e-learning platform with Django (MVT) and REST APIs.
    • Built a clinical data management and visualization website with secure authentication.
    • Built a workshop platform with Django, JavaScript, PostgreSQL and Docker.
    • Built REST APIs in Flask and optimized queries across PostgreSQL, MySQL and MongoDB, including OLAP queries.
    • Improved performance with caching and threading.

    Frontend and visualization

    • Built interfaces with Angular and TypeScript.
    • Created interactive graphs, charts and maps with D3.js for clinical data warehouse analysis.
    • Built map views with Leaflet and OpenStreetMap.

    Automation and operations

    • Automated data collection and workflows with Selenium and BeautifulSoup.
    • Deployed and optimized platforms on Ubuntu Linux servers and DigitalOcean.
    • Python
    • Django
    • Flask
    • Angular
    • TypeScript
    • D3.js
    • PostgreSQL
    • MySQL
    • MongoDB
    • Docker
    • DigitalOcean
    • Selenium
    • Leaflet

Education

Bachelor of Science in Computer Engineering

North South University, Dhaka, Bangladesh, 2015 – 2020

A condensed version is on the résumé page.