Work

Things I do for love and to pay bills. Everything else that wouldn't leave me alone.

Engineering research

My research asks how a drone can make good decisions on its own: perceiving its surroundings, weighing options under uncertainty and energy limits, and acting with a reason it can show. Solar-electric flight is the complementary line, extending endurance so the decisions have time to matter.

Undergraduate thesis, 2022

Design and analysis of a solar-powered quadcopter, written for my BEng in Aeronautical Engineering at Nanchang Hangkong University. It is the honest starting point of the parity question the current software now answers reproducibly: can a solar multirotor ever harvest as much energy as it consumes? The reproducible answer is no, and the reason shapes the research.

Solar charge-consumption parity in multirotor UAVs

Preprint, engrXiv, posted 1 October 2026

The parity result as a citable paper: a 3 kg quadcopter with 1 square metre of panel harvests 1,567 Wh against 6,613 Wh consumed over a Dhaka solstice day, and even tripled sunlight cannot close the gap. Code and figures archived on Zenodo. A second version is in preparation: all three validations are complete (sky model checked against PVGIS satellite data, the AtlantikSolar 81-hour flight reproduced, hover power recalibrated against real data), and the paper is being rebuilt toward journal submission. doi.org/10.31224/8404

Interests

Autonomous UAV decision-making, solar-electric endurance, counter-UAS concepts, applied aerodynamics, aviation data systems.

Engineering tools

Eight open-source Python projects, each with a full automated test suite, continuous integration, and a public release. Every number quoted on this site can be checked against the code. Plus one native Android app, below.

Solar flight

solar-uav-sim

Solar UAV endurance simulator. Simulates a solar drone across 24 hours with real solar geometry, panel and battery models, and momentum-theory propulsion, then solves for charge-consumption parity. Headline result: a 3 kg quadcopter with 1 square metre of panel harvests 1,567 Wh against 6,613 Wh consumed over a Dhaka solstice day, and the parity solver shows even tripled sunlight cannot close the gap. Grows out of my 2022 undergraduate thesis.

Autonomy

drone-autonomy-sim

Onboard autonomy simulation. A drone in a grid world senses obstacles within a limited radius, plans with A*, replans in flight when the world changes, and follows a battery-reserve rule that sends it home when continuing is unsafe. Every decision is logged with its reason.

Defence

counter-uas-sim

Counter-drone defence simulation for research and education. Noisy detection, Kalman filter tracking, a documented threat score, proportional-navigation guidance for a low-cost interceptor, and seeded Monte Carlo analysis: intercept probability 0.680, USD 643 per successful intercept against USD 64,338 for a missile-class system using publicly reported estimates. v1.1.0 adds an interceptor energy budget, so guidance comparisons price flight time honestly.

Atmosphere

isa-aero

International Standard Atmosphere and aerodynamics utilities. Atmosphere state to 51 km, airspeed conversions, Reynolds and Mach, lift, drag, and stall speed. Reproduces the official ISA table values.

Weather

metar-decoder

METAR aviation weather decoder. Raw airport weather reports parsed into structured data and plain English. Pure Python standard library, zero dependencies.

Aviation

notam-decoder

ICAO NOTAM decoder. Raw NOTAM text parsed into structured data and plain English: Q-code decoding per ICAO Doc 8126, schedule and abbreviation expansion, height limits, and a plain-language summary. Pure Python standard library, zero dependencies. 47 pytest checks.

Android

apex-argus

Native Android app (Kotlin) for pilots and aviation geeks, grown out of metar-decoder. METAR and TAF decoding with plain-English readouts, a live flight radar on OpenStreetMap fed by the OpenSky Network, and an in-app updater. Public APK on GitHub Releases (v1.1.3), in closed testing on the Play Store.

Aerodynamics

naca-airfoil

NACA 4-digit airfoil generator and analyzer. Geometry, thin-airfoil theory, Selig and CSV export, plots. Documents openly where thin-airfoil theory departs from wind-tunnel data, and why. v1.1.0 adds a vortex panel method validated against published 2412/0012 reference values.

Missions

drone-mission-planner

Multirotor mission feasibility. Waypoints, polygon geofence checks, energy estimates against battery and reserve, and a FEASIBLE, MARGINAL, or INFEASIBLE verdict naming the binding constraint.

In progress

What is coming

solar-uav-sim v1.1: drivetrain efficiency calibrated against real hover data and the parity solver fixed, all 15 tests passing. Still to come: panel temperature derating, duty-cycle parity results, and three vehicle classes, feeding the second version of the parity paper and a journal submission. Also in the pipeline: endurance-limited guidance comparisons for counter-uas-sim, larger autonomy scenarios, and a short demo video of the autonomy decision log.

Business ventures

An organized record, most recent first, with honest status labels.

Subtle Corp 2024 to present

IT services and e-commerce, Chattogram. Trade licensed with Chattogram City Corporation. Member of e-CAB (2025).

Rasa Electronics 2021 to present

Electronics supplier, importer, and exporter, Chattogram. Trade licensed with Chattogram City Corporation. Member of the Chattogram Chamber of Commerce.

Ekarigori Limited 2019 to 2025, dissolved

My first company: a UK-registered PR and brand agency that served clients worldwide, including in Bangladesh, run for six years before it was dissolved in 2025. Profiled by IBTimes India and Jagonews24. The operating experience behind everything since: sourcing, trading, and running a small team on thin margins. Through it, young entrepreneurs, artists, and small businesses got a platform.

Coding

Web developer on Upwork from 2013 to 2023, and press relations specialist and web developer on Fiverr from 2015 to 2023: websites, print-on-demand, dropshipping storefronts, and digital marketing builds for clients in several countries. Frontend web developer and designer at Coderstrust from 2015 to 2017. Today the coding is the open-source engineering tools above, and this website itself.

Working set

Python, JavaScript, HTML/CSS, WordPress.

Creative

Cryptocurrency and Blockchain Explained

Book, Amazon, June 2021. ISBN 9798527906318

A plain-language guide to cryptocurrency and blockchain, published on Amazon. Amazon author page.

Meraki

Album, released via DistroKid

Recording artist with releases on Spotify and other platforms. The album Meraki includes the tracks "Sayonara", "Rewink", and "Storms".

HackerNoon

Contributing author, 2022 to 2023

Feature writer and contributing author at HackerNoon.

Mentions

Sport

Brothers Union Cricket Academy

2009 to 2014

Wicket-keeper batsman. Played in the 1st Division Cricket League, the 2nd Division Cricket League, the Under-15 District League, the Rafi Memorial Tournament, and the CPL T20.

Kollol Cricket Academy XI

Team Captain, 2010 to 2012

Team Captain of Kollol Cricket Academy XI.

Things I care about: I organized a cleaning campaign with my friends when we went to visit Saint Martin, February 2020 (Daily Star). I volunteered at Bangladesh's first Covid-19 field hospital in Chattogram in April 2020, a once-in-a-lifetime experience (Daily Star). Through Ekarigori, work and visibility for young entrepreneurs, artists, and small businesses in Bangladesh.

Memberships: Lions Club; JCI; registered UN Volunteer.