From the Tafsir Engineering Archive

Md. Tafsir Un Nahian

Systems engineer · maker · CSE graduate

Md. Tafsir Un Nahian is a systems-minded engineer in Dhaka who works from physical inputs upward: sensors and analog front ends, embedded firmware, connectivity, backend software, databases, and machine learning.

From sensor input to software output, I build the whole system.

The aim is not to stop when one layer works. I want to understand the complete path, find the boundaries where systems fail, and turn prototypes into dependable products that can operate outside a controlled demonstration.

View selected work ↓Read full profile ↗

DevicesFirmware & logicConnectivitySoftwareData & intelligence

01Selected work

Four projects. Four different system boundaries.

From a 4G vehicle tracker and household power protection to on-device ECG inference and a multi-role market platform.

PROJECT / 001

PUBLIC RECORD · REV / 01

FLAGSHIP / PROJECT 001

BUP Bus Tracker

A vehicle tracker built as one connected system—from GNSS fix to live web telemetry.

An ESP32-based 4G GNSS vehicle tracker publishing live location and telemetry over MQTTS to a custom web application.

ESP32
FreeRTOS
MQTT
GNSS
4G
FastAPI
PostgreSQL
Redis

Read project record

PROJECT / 002

01ECG dataset

02Inter-patient evaluation

03CNN

04TensorFlow Lite

05ESP32 inference

PUBLIC RECORD · REV / 01

PROJECT / 002

ECG Arrhythmia Classification & TinyML Deployment

A thesis project connecting rigorous ECG model evaluation with constrained on-device inference.

Open record ↗

PROJECT / 003

01Power / safety sensors

PUBLIC RECORD · REV / 01

PROJECT / 003

Energy Monitoring System

Household power measurement, protection, and safety telemetry in one ESP32-based prototype.

Open record ↗

PROJECT / 004

01Fishermen / wholesalers

02Role-based application

03Market data

04Advisory layer

05Oversight modules

PUBLIC RECORD · REV / 01

PROJECT / 004

Machgari

A market platform designed around the different jobs of fishermen, wholesalers, and fisheries stakeholders.

Open record ↗

View complete archive →

02Profile

I’m most interested in the seams between disciplines.

I’m a Computer Science and Engineering graduate in Dhaka who works across embedded devices, telemetry, backend systems, databases, and TinyML.

My strongest work happens at the interfaces: where a sensor meets firmware, firmware meets a network, and raw data becomes a useful application.

More about Tafsir →

01Devices

ESP32, analog front ends, sensors, power electronics, displays, relays, and physical interfaces

02Firmware & logic

C/C++, FreeRTOS, digital logic, SAP-1, task separation, device state, and protocols

03Connectivity

4G, GNSS, MQTT, ESP-NOW, UART, I²C, SPI, WebSocket, and SSE

04Software

FastAPI, Next.js, React, TypeScript, authentication, and role-based workflows

05Data & intelligence

PostgreSQL, MySQL, Redis, TensorFlow, CNN evaluation, and TinyML

03Experience

Learning by building, researching, and taking systems apart.

A CSE foundation, hands-on project work, a cybersecurity internship, and technical community involvement.

2025.10—11

Cybersecurity Intern

Byte Care Academy

Foundational security work and penetration-testing exercises against sandboxed systems.

2022—2026

BSc, Computer Science & Engineering

Bangladesh University of Professionals

CGPA 3.71/4.00. Thesis focused on inter-patient ECG arrhythmia classification and TinyML deployment.

PAST ROLE

Assistant Joint Secretary

BUP Computer Programming Club

Club promotion and competitive-programming activities.

04Writing

Turning build work into useful notes.

NOTEBOOK / IN PREPARATION

The first entries will document decisions already present in the projects—not generic tutorials.

Designing the 4G / GNSS telemetry path
FreeRTOS task boundaries in the bus tracker
Moving an ECG CNN toward ESP32 inference

Open writing index →

05Contact

If the work crosses disciplines, I'm interested.

Let's build.

Email Tafsir ↗