Hi, I am KosoFull-Stack Developer & Consultant

I specialize in researching obscure and emerging technologies to uncover hidden opportunities. My focus is turning technical exploration into real business value.

View My Work Learn More

Featured Projects

These are some projects I worked on recently.

Featured

Plutio

Web Development

In Progress

Ongoing DevOps support and Observability implementation in Prometheus, Grafana and Google Cloud.

Google CloudDevOpsGrafanaPrometheus

Live Demo →

Aug 2025

Maori Player

Web Development

In Progress

A modern, interactive video player designed for language learning with synchronized transcripts, word-level tooltips, and subtitle overlays. Built with React, TypeScript, and Vite.

ReactExpressMongoDB

Live Demo →

Aug 2025

Featured

Data Compass

Web Development

Completed

AI-powered search engine for Australian government data. Discover, explore, and link datasets from ABS and other agencies with ease developed during #GovHack.

NextJSPythonOpenAI

Live Demo →

Aug 2025

Latest Blog Posts

Some blogs I've written recently.

DevelopmentJuly 11, 2025

SSH Tunnel to Receive Webhooks

While building a Shopify app, I quickly ran into a challenge: how to receive webhooks sent from Shopify’s servers to my local development environment.

By Koso Bilegsaikhan

DevOpsMarch 31, 2025

Build Geomap in Grafana with Nginx

One day, I woke up and decided to track just how many calls my portfolio web was getting and from which countries the requests were being called from.

By Koso Bilegsaikhan

DevelopmentMarch 16, 2025

Securing WebRTC via JWT Tokens

Recently I took on the challenging task of changing the underlying software for a WebRTC server for help desk agents for our internal Call Center.

By Koso Bilegsaikhan

View All Posts

Services

I provide the following services as a freelancer.

Software Consultation

Need help choosing the right tech stack, planning architecture, or scaling your app? Or are you unsure of what's next when vibe coding?

Debugging
Architecture suggestions

USD 30 per hour

On weekends, the rate is increased to $40

Book a call

Popular

Custom Websites

I develop custom websites for clients that aren't satisfied with run-of-the-mill templates, website builders and AI-generated code.

E-Commerce
Payment Providers

USD 1,000+

Price varies depending on complexity.

Ask for quote

Automation & Bots

Automate your community with custom bots. Bots can have moderation included or simply focus on a small niche.

Monetization
Admin Panels
Dashboards

USD 500+

Price varies depending on complexity.

Ask for quote

Work Experience

I've been freelancing for over 5 years and working professionally for 3.

Full-Stack Engineer

Unitel

Mongolia

Jun 2023 - Jul 2025

Spent 2 years working as a Full-Stack Engineer mainly with Java (Quarkus) + React stack for internal tools and as a core developer for the development of a SaaS Call Center labeled "ContactX" (currently in internal testing). During that period, I gained in-depth knowledge of telephony systems, protocols and became proficient at reading documentations (including RFCs).

Key Achievements:

Built Call Center SaaS where I developed a no-code tool to automate workflows, designing both the frontend and backend portions to efficiently manage incoming and outgoing calls. Used React (React Flow), Java and Asterisk PBX.
Created Data Pipeline with TimescaleDB (Postgres), Apache Kafka and in-house ETL tool I developed in Java, alongside a dashboard viewer based in React similar to Apache Superset.
Created Face Validation Pipeline for on-site branches of the company with Java and AWS Amazon Rekognition, handling 100,000+ monthly verifications.

JavaGolangRedisKafkaReactAngular+4

Research Assistant

Computer Graphics Laboratory @ National University of Mongolia

Mongolia

Sep 2021 - Jun 2023

While studying for my undergraduate degree in Computer Science, I joined the Computer Graphics Research Laboratory in the National University of Mongolia and was the Lab Supervisor during my stay. We entered multiple hackathons and conferences, specifically focusing on using Unreal Engine and Vulkan for various purposes.

Key Achievements:

Appeared on National Television during a hackathon-type contest as a Top 5 participant.
Led a team of 6 developers to deliver multiple small-scale projects, coordinating development, code reviews, and deployment.
Created a miniature render engine using Vulkan, demonstrating strong low-level graphics programming skills.

Unreal EngineC++Vulkan APIGame DevelopmentResearch

Game Developer

Digital Solutions

Mongolia

Jun 2022 - Jan 2023

Key Achievements:

Developed a Media Streaming tool that ensures synchronized playback across all game instances in a multiplayer environment, serving over 5,000 users. This allowed for virtual meetings within the meta-verse.
Implemented a custom, optimized Linked List to power a sorting algorithm that tracks multiple instances of the same mesh, improving rendering performance. This reduced system requirements significantly, allowing for mobile devices to join the meta-verse.

Unreal EngineUnityC++RPC / Remote Procedure Calls

Education

I started my academic journey with a Bachelor's in Computer Science and initially had no intention to continue studying, but gained a newfound fascination with AI and its non-LLM applications after graduating. As a result, I'm currently studying a Master's in AI in Sydney.

Master's in Information Technology in Artificial Intelligence

Macquarie University

Sydney, NSW

Aug 2025 - June 2027

I've started a Master's degree in Artificial Intelligence in search of further challenges outside the Software Engineering field.

Data ScienceNeural NetworksNLPLLM

Bachelor's in Computer Science

National University of Mongolia

MongoliaGPA: 3.4

Sep 2020 - Jun 2023

Completed a 4-year Bachelor's in Computer Science in 3 years. Thesis: modular architecture for motion-based games enabling rapid integration of diverse motion controllers.

Computer SystemsAlgorithmsAssembly Language