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Taqi Tahmid Tanzil

@tanzil

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I build reliable Android and Flutter products, from eSIM provisioning to offline-first mobile systems.

Bangladesh

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What I'm looking for

I'm looking to lead and build reliable mobile products, especially Android, Flutter, eSIM, offline-first, and cross-platform systems, while contributing to architecture, delivery, mentoring, and technical planning.

I've built and led mobile products across Android and Flutter for Truely, Potential, Dhrubok Infotech, and Miaki Media. My work spans global eSIM activation, clinical monitoring, industrial IoT, telecom VAS, and consumer apps.

At Truely, I led a Flutter rebuild and owned Android eSIM provisioning through a native platform-channel bridge to eUICC/LPA APIs. I resolved OEM-specific issues across Samsung, Pixel, OnePlus, and Xiaomi, built Fastlane and Codemagic CI/CD that cut release cycles by 40%, and supported growth from roughly 4,500 to 150,000+ downloads.

At Potential, I shipped more than five Android and Flutter apps, including Dexulin for Bluetooth-connected biometric streaming and a BLE forklift application. I also created a reusable architecture skeleton that reduced new-project setup time by about 20% and mentored junior developers.

I've delivered high-stakes systems independently, including Coke Studio event authentication for 40,000 attendees with zero downtime and offline fallback. Through VertexialLabs, I now explore mobile architecture, offline-first systems, Kotlin Multiplatform, and cross-platform product development.

Experience

Work history, roles, and key accomplishments

Current

Independant Developer

Current

Taqsoft

Apr 2026 - Present (6 months)

Building and shipping mobile products independently under my own publisher name.
- Vexylt — built and shipped a link-in-bio product end-to-end: a Kotlin Multiplatform Android app plus a React web app at vexylt.com.
- SmartJSONViewer — built and launched smartjsonviewer.com, a web JSON formatter and explorer (React, Vite).

Android Flutter Kotlin Multiplatform Architecture Prototyping DevOps

Software Engineer / Mobile Team Lead

Truely Pte Ltd

Mar 2025 - Apr 2026 (1 year 1 month)

Led the mobile engineering team through a rebuild of the app in Flutter, then owned the native Android side, building a platform-channel bridge into eUICC/LPA APIs for eSIM activation. Diagnosed and resolved OEM-specific LPA behaviour differences, built CI/CD pipeline with Fastlane and Codemagic, and managed one mobile engineer.

Flutter Android Kotlin EUICC LPA Platform Channels Fastlane Codemagic CI CD Release Management Team Leadership

Senior Software Engineer

Potential Inc.

Feb 2024 - Feb 2025 (1 year)

Shipped 5+ Android and Flutter apps across healthcare, industrial IoT, and social client projects; built a reusable architecture skeleton adopted team-wide. Led development of Dexulin, a clinical diabetic monitoring Android app, and mentored 2-3 junior developers.

Android Flutter Kotlin Jetpack Compose BLE Google Fit API Architecture Mentorship

Contractual / Consulting Engagement

QuirkyBuddy Inc.

Dec 2023 - Jan 2024 (1 month)

Short-term mobile consulting engagement between full-time roles.

Software Engineer / Mobile Team Lead

Dhrubok Infotech Services Ltd.

Feb 2021 - Jul 2023 (2 years 5 months)

Took sole ownership when scope demanded it, including the Coke Studio event authentication system, shipped solo with zero downtime under live-event load. Worked across Android and Flutter client projects, coordinating with backend engineers, QA, and UI/UX, and applied Scrum Master certification in practice.

Android Flutter Kotlin Scrum Sprint Planning Code Review Client Communication

Android Developer

Miaki Media Ltd.

Jul 2018 - Jan 2021 (2 years 6 months)

Sole developer on most projects, integrating telecom VAS services into Android apps for one of Bangladesh's leading telecom operators. Owned the company's Google Play developer console and app releases, migrated the legacy codebase from Java to Kotlin, and cut crash rate 30%.

Android Kotlin Java Telecom VAS Google Play Developer Console Crash Analysis

Junior Android Developer

Binary Ventures Ltd.

Sep 2017 - Jun 2018 (9 months)

Worked with one other developer on an Android ride-sharing app in Java, implementing real-time map tracking, driver-rider matching, and trip management with Firebase and Google Maps.

Android Java Google Maps Firebase Ridesharing