Shahrier Erfan Harun — full-stack engineer, remote worldwide

I draft, build and shipsoftware.

Full-stack web and app development, end to end — .NET on the back, React, Next.js and Angular on the front. Nine years across German and Bangladeshi teams, from IoT labs to AI platforms. Available for project work and long-term collaboration.

Start a project →See the work

Pencil sketch of Shahrier standing in an old town street

that's me → somewhere in the old town2B / paper

scroll — the page draws itself

01 — About

An engineer who sketches before he codes.

I build web apps, admin platforms and the systems behind them — currently digital machine documentation at EnduraDocs, previously a mail-encryption gateway at Uponu, realtime collaboration tools, payment APIs and an RFID access-control platform for a public fabrication lab.

My master's is in Human-Computer Interaction, so I care about how the thing feels, not just whether it compiles — a short paper from that work won best short paper at Mensch und Computer 2021. I work solo or plugged into an existing team, in English or German.

years shipping

teams & companies

countries: DE & BD

The line so far

One continuous line.

2022 — now

Lead Software Engineer · deliberAIde

AI platform for structured dialogue: leading the plan → capture → analyse → report pipeline, keeping every insight traceable to its source quote, across a multilingual EN/DE/ES interface.

2025 — now

Full-stack Software Engineer · EnduraDocs GmbH

Digital documentation platform for machine builders under the new EU Machinery Regulation — iiRDS-tagged content, access control, QR delivery and an interactive print-versus-digital savings calculator.

2024 — 2025

Full-stack Software Engineer · UPONU GmbH

Mail encryption gateway: an admin dashboard in Next.js and React for large datasets, Go REST APIs, PostgreSQL optimisation, Mantine UI and Zitadel authentication.

2022 — 2023

Full-stack Software Engineer · Grunenberg & Comp, Meerbusch

Maintained an online diagram-making tool in C# and Angular, built SignalR collaboration with RxJS, and covered the front end with Cypress tests.

2021 — 2023

Research Assistant, IoT Platform · Public Fabrication Lab

Django access-control software for lab machines with RFID, MQTT and Node-RED, plus plugins for 3D printers on Raspberry Pi and ESP8266 hardware.

2021

Full-stack Software Engineer · Tokheim Service, Berlin

ASP.NET Core cloud solution with an Angular front end over microservices, payment-transaction REST APIs and NUnit test coverage.

2020 — 2023

MSc Human-Computer Interaction

Best short paper award at Mensch und Computer 2021 — onboarding 3D printers through conversational agents.

2018 — 2020

Assistant Programmer · LGED, Dhaka

Employee management system in C#, migrated to ASP.NET Core, with SQL Server queries and reporting.

2017 — 2018

Software Engineer · Unifon Limited, Dhaka

First professional role: value-added products on Windows web forms, Crystal Reports and SQL databases.

Best short paper — Mensch und Computer 2021

Always half-packed — I travel light and ship from anywhere

Weekend habit: IoT toys — Raspberry Pi, ESP8266, far too many sensors

Send me a napkin sketch — I'll send back a live URL

…mostly whiteboards, honestly.

02 — Selected work

Four things worth showing.

Hover a row to peek at the sketch. Click to open the details.

03 — Toolbox

Sharp tools, kept sharp.

C# · .NET / ASP.NET Core

7 years, backend home turf

Angular · RxJS

SPAs and realtime UIs

React · Next.js

current daily driver

TypeScript · JavaScript

everywhere

Python · Django

APIs and data work

SQL Server · PostgreSQL · MongoDB

modelling and tuning

SignalR · MQTT · Node-RED

realtime and IoT plumbing

Azure · Docker · CI/CD

ship it repeatably

Cypress · NUnit · Jasmine

tests that stay green

Raspberry Pi · ESP8266

hardware when needed

HCI · UI/UX

MSc, not a hobby

Clean code · SOLID

boring on purpose

04 — Contact

Got something half-drawn? Let's finish it.

replies within a day