Career & Professional Experience

4+ Years Combined

Full-stack engineering, native Android mobile applications, PostgreSQL optimization, and high-standard software quality assurance.

Software Engineer

@ Hitnext Technologies

Sylhet, Bangladesh

July 2020 – October 2023

Full-TimeOn-SiteFull-Stack & Android

Developed and maintained full-stack web and native Android mobile applications using React, Next.js, Node.js, Express.js, MongoDB, PostgreSQL, WordPress/PHP, and Java / Android SDK.
Architected native Android applications with background services, offline SQLite caching, media session controls, and RESTful API integrations.
Optimized PostgreSQL query execution plans and database schema, resolving critical bottlenecks and reducing query response latency by 35%.
Designed reusable application architecture, integrated third-party APIs/services, and resolved critical production issues across web and mobile systems.

Android SDKJavaReactNext.jsNode.jsExpress.jsPostgreSQLMongoDBSQLitePHP / WordPressMobile DevAPI Integration

@ Nitro9

Odense NØ, Denmark

March 2019 – April 2020

Full-TimeRemoteQuality Assurance & QC

Tested web applications and software systems to verify functionality, reliability, and adherence to project requirements.
Identified, reproduced, analyzed, and documented functional and UI defects with clear reproduction steps and expected versus actual behavior.
Collaborated with developers on defect resolution, regression testing, and verification of fixes before release.

Quality Control (QC)Functional TestingUI TestingDefect TrackingRegression TestingRelease Verification

04/05