Md Siam Hossain Sarker

Summary

Software Engineer with 3+ years building scalable backend systems, distributed services, and identity infrastructure across mining, healthcare, and SaaS domains. Currently at WebAlive (Melbourne), architecting Hykmah — a multi-product SSO platform operating at the OIDC/PKCE protocol level. IEEE member, Springer & IEEE published researcher, international hackathon finalist.

Experience

Software Engineer Jan 2026 — Present

WebAlive · Melbourne, Australia (Remote)

Architecting Hykmah — unified SSO platform with custom OIDC/PKCE flows in Keycloak, managing cross-product state, permissions, and auth boundaries.
Built centralised user provisioning service (FastAPI + MongoDB) for cross-product identity lifecycle and access control.
Developed backend systems for Exsited and WebCommander in Grails; contributed Umerang backend in C# with GDPR-compliant schema design (merchants, sessions, events).

Java Keycloak OIDC/PKCE FastAPI MongoDB Grails C# MariaDB

Software Engineer May 2023 — Dec 2025

Bit Mascot (Pvt.) Ltd. · Dhaka, Bangladesh

Designed and optimised RESTful APIs across MySQL, PostgreSQL, MongoDB, and DuckDB for high-volume production workloads, following Repository-Service and MVC patterns.
Built GIS-based spatial query systems for two Australian mining platforms (Mining Hub, Mining Bull) using PostGIS and spatial indexes for real-time geospatial filtering.
Implemented async data pipelines (RabbitMQ, Laravel Schedulers) and WebSocket layers to decouple bottlenecks in enterprise workflows.
Integrated SendGrid, Autobill SDK, and webhook-driven flows across Locum West, Nintendo Repair, and Regional Tech Hub.

PHP Laravel CakePHP Node.js PostgreSQL/GIS MySQL RabbitMQ WebSockets DuckDB

Undergraduate Teaching Assistant Nov 2021 — May 2023

United International University · Dhaka, Bangladesh

TA for Structured Programming, OOP, DBMS, and Computer Networks labs; one-on-one mentoring in C/C++, Java, PHP, and MySQL.
President — UIU App Forum (2020–2023): led 800+ member developer community with industry-partnered events on web3, mobile, and career development.

Selected Projects

Hykmah Ecosystem Keycloak · FastAPI · MongoDB · Grails · C# 2026 — present

Unified SSO platform with custom OIDC/PKCE flows; single login across independent products with per-product authorisation. Centralised provisioning service manages cross-product access lifecycle.

Log Archiver FastAPI · DuckDB · Apache Parquet · RabbitMQ 2025

Enterprise log archival platform with columnar Parquet storage for efficient analytics queries. RabbitMQ-decoupled ingestion sustains throughput under high load without blocking the write path.

Mining Hub & Mining Bull Laravel · Node.js · PostgreSQL/GIS ↗ mininghub.com

REST APIs and GIS spatial query systems for two Australian mining platforms; real-time commodity tracking with geospatial filtering and spatial indexes.

Reed Graduation CakePHP · MySQL · RabbitMQ ↗ reedevents.com.au

Graduation service platform for universities with CMS for editable certificate templates. Asynchronous certificate generation via RabbitMQ.

Car-Story Solidity · Ethereum · React ↗ github

Decentralised vehicle history on Ethereum smart contracts; removes the need for a trusted central authority. Undergraduate thesis — published at IEEE TENSYMP 2024.

Education

BSc in Computer Science & Engineering

United International University · Dhaka, Bangladesh

CGPA 3.90 / 4.00 · 137 credits · 11 academic scholarships (3× full, 6× half, 2× quarter) · Thesis published at IEEE TENSYMP 2024

2019 — 2023

Skills

Languages Java, Python, TypeScript / JavaScript, PHP, C#, Solidity, C/C++

Databases PostgreSQL / GIS, MySQL, MongoDB, DuckDB, MariaDB

Backend Laravel, FastAPI, Node.js (Express, NestJS), Grails, CakePHP

Async & Messaging RabbitMQ, WebSockets, Apache Parquet, event-driven pipelines

Identity & Security Keycloak, OIDC, PKCE, OAuth2, token enrichment, access control

Frontend React, React Native, jQuery, Ajax, ES6

Blockchain Solidity, Ethereum, smart contract architecture

Tooling Docker, Git, Linux, Postman, Selenium, LaTeX, Jira

Publications

Car-Story: A Decentralised Vehicle Information Storage System Based on Blockchain

IEEE TENSYMP 2024 — Ethereum smart contract architecture for trustless vehicle history verification.

UAVs in Green Health Care for Energy Efficiency and Real-Time Data Transmission

Springer LNNS Vol. 665 · ICISS 2023 — UAV-based healthcare data delivery with MobileNet real-time detection.

Honours & Achievements

International Blockchain Olympiad — Award of Distinction 2023

Top 20 nationally, international finalist · 6th IBCOL, Amsterdam · Team "Unchained".

ICPC Asia Dhaka Preliminary — Honorable Mention (×2) 2020 — 2023

Three appearances across teams Songshoptok, CodeSpeed, and Brute Force.

Hult Prize 2022 — 1st Runner-up (UIU) 2022

Competed at the Islamabad Regional Summit.

CSE Project Show — Runner-up 2021 — 2022

System Analysis & Design Lab (Fall '21), Software Engineering Lab (Spring '22).

Certifications

Python for Everybody Specialization — Coursera / University of Michigan (Jul 2020)

PCAP: Programming Essentials in Python — Cisco Networking Academy (Jul 2020)

Introduction to Cloud Development — edX · HTML, CSS, JavaScript (Apr 2022)

Responsive Web Design — freeCodeCamp (Feb 2022)

Languages & Memberships

Languages: Bengali (native) · English — Professional proficiency (IELTS 6.0 / B2)

IEEE Student Member · EMK Center General Member (since 2018)