Software Engineer
Email: tasintsn@gmail.com
LinkedIn: linkedin.com/in/tasintsn
GitHub: github.com/tasinkhan

Diligent software engineer, creative thinker with 4.5+ years of expertise in designing and optimizing systems across diverse domains, including OTA platforms (Flight Booking system), accounting solutions, and mobility services. Successfully led the integration of Sabre and Galileo GDS to enhance flight booking capabilities and developed scalable solutions for energy-sharing platforms. Proven track record in delivering efficient, data-driven systems tailored to complex business needs.

Dhaka, Bangladesh | January 2024 – Present

• Migrated a microservice from Flask with DynamoDB to FastAPI with PostgreSQL, achieving 95% unit test coverage and improving performance by 15%.
• Achieved 85% unit test coverage across five microservices, ensuring reliability and robustness in critical system components.
• Optimized database queries and tailored API responses, resulting in more than 10% performance improvement across the system.
• Supported the design of backend solutions to evaluate default probability, enabling financial institutions to reduce risk and improve decision-making.
• Spearheading the backend development of SOLmobility systems to support the seamless integration of IoT-driven smart lithium-ion batteries in electric three-wheelers. This shift reduces charging times by 50%, extends battery life, and significantly improves user experience.
• Designing scalable and sustainable backend solutions that empower garage owners with pay-as-you-go financing models, allowing them to reduce operating costs and boost income by up to 30%.
• Contributing to the platform’s broader mission of combating energy poverty and supporting institutions to achieve UN Sustainable Development Goals (SDGs) by increasing access to clean, affordable energy for underserved communities across Bangladesh.

Dhaka, Bangladesh | October 2021 – January 2024

• Developed and maintained a flight booking system (SkyTrip) integrating Sabre and Galileo GDS via REST and SOAP APIs, improving database efficiency and performance.
• Built and optimized SaaS-based web applications using Django, enhancing system functionality and user experience.
• Designed and deployed serverless REST APIs using AWS Lambda to streamline interactions with client-side applications.
• Led the end-to-end development process, including research, conceptual design, implementation, and deployment.
• Participated in database design and system design for a broker-hosted OMS service, contributing to the research, conceptual design, implementation, and deployment phases.

Dhaka, Bangladesh | March 2020 – September 2021

• Developed a comprehensive accounting system using Python, Django, and Vue.js, managing user accounts, sales, purchases, and reporting modules.
• Handled AWS deployment processes, ensuring smooth production delivery and scalability.
• Built and maintained various WordPress-based platforms, including e-commerce sites and event booking systems.

• Programming: Python, Django, FastAPI, Flask, Django REST Framework, Django Channels, WebSocket
• Databases: MySQL, PostgreSQL, SQLite, DynamoDB, Django ORM, SQLModel
• Cloud: AWS (Lambda, S3, EC2, CloudFront, API Gateway, SNS)
• Tools: Docker, Redis, Celery, GitHub, Bitbucket, Pytest
• Other: Object-Oriented Programming, Data Structures

Jahangirnagar University – Savar, Dhaka, Bangladesh
GPA: 3.83/4.00 | January 2018 – July 2019

Patuakhali Science and Technology University – Dumki, Barishal, Bangladesh
GPA: 2.50/4.00 | January 2012 – August 2016

Govt. Syed Hatem Ali College – Barishal, Bangladesh
GPA: 5.00/5.00 | June 2009 – April 2011

Barisal Zilla School – Barishal, Bangladesh
GPA: 5.00/5.00 | January 2002 – April 2009

• Using Databases with Python – University of Michigan via Coursera | August 2022
• Using Python to Access Web Data – University of Michigan via Coursera | July 2022
• Python Data Structures – University of Michigan via Coursera | March 2022
• Programming for Everybody (Getting Started with Python) – University of Michigan via Coursera | March 2022

Backend Developer
Technologies Used: Python, Flask, FastAPI, Pytest, PostgreSQL, DynamoDB, Docker, AWS Lambda, EC2, SNS

• Contributed to the development of SOLmobility, a PAYG (Pay As You Go) lithium-ion battery leasing platform powered by SOLbat technology.
• Optimized database queries and tailored API responses, achieving over 10% performance improvement across the system.
• Implemented remote battery monitoring and transaction tracking features, enhancing operational visibility for garage owners.
• Helped enable a 30% cost reduction for garage owners while increasing income for electric three-wheeler drivers.

Backend Developer
Technologies Used: Python, Django ORM, Django, Django REST Framework, JavaScript, HTML, CSS, Bootstrap, PostgreSQL

• Designed and developed a B2C flight booking system, integrating Sabre and Galileo GDS via REST and SOAP APIs.
• Dockerized and deployed the system on AWS EC2, ensuring scalability and availability.
• Implemented advanced functionalities: flight search, reservation, ticket issuance, and user-specific booking management.
• SkyTrip Website
• Agent SkyTrip

Backend Developer
Technologies Used: Python, Django Framework, JavaScript, HTML, CSS, Bootstrap, MySQL

• Developed an accounting platform with modules for users, sales, purchases, and reporting.
• Optimized backend architecture for better data handling and streamlined business workflows.

Assistant Project Manager
Bdtask Limited – Dhaka, Bangladesh
Email: jamshedujjol@gmail.com
Mobile: 01926917900

Assistant Professor
Department of CIT, Faculty of CSE, Patuakhali Science and Technology University – Dumki, Patuakhali – 8602
Email: atikurrahaman@gmail.com
Mobile: 0191511492