Shawn Kiseok Ohn

Software Engineer,
Full-Stack Developer

I build things on the web.

About

I'm a software engineer with a passion for creating engaging & accessible digital experiences. I love to stand at the crossroads of design and development, crafting digital experiences that are not only visually appealing but also optimized for usability and performance.

As a Full-stack Developer at Strata Research, I specialize in transforming complex business challenges into scalable, high-performance solutions. By leveraging a diverse technology stack and a design-centric mindset, I turn innovative concepts into impactful digital realities.

My professional journey has spanned diverse industries — from automotive to gaming, mobile applications, smart infrastructure, and healthcare — each project expanding my technical horizon and problem-solving capabilities.

Experience

  1. AUG 2021 — Present

    Software Developer · Strata Research

    Lead the development and architecture of .NET Framework application. Develop and deploy web and cross-platform applications for diverse clients. Migrated a legacy frontend to Next.js, improving data visualization, user administration, and app configuration. Consolidated backend services by replacing multiple AWS Lambda functions with a containerized FastAPI server.

    • TypeScript
    • React
    • Next.js
    • Express.js
    • Python
    • PostgreSQL
    • .NET Core
    • AWS
  2. Oct 2020 — May 2021

    Game Developer · HitGrab Game Labs

    Architected and implemented APIs and plugins for multi-platform sign-in, in-app purchases and push notification system for a mobile game using Firebase. Migrated and adapted an iOS build to a compatible Android build and successfully released it on Google Play Store

    • C#
    • Unity
    • TypeScript
    • Node.js
    • Firebase
  3. Feb 2021 — Apr 2021

    Mid Level Developer · Endev Studio

    Developed and prototyped major features of mobile dating application. Launched to Google Play and Apple App Store

    • Flutter
    • TypeScript
    • Node.js
    • Firebase
  4. Nov 2020 — Feb 2021

    Software Developer · iContribute

    Led and collaborated with student engineers and designers to develop a cross-platform application for a non-profit organization

    • TypeScript
    • React
    • Express.js
    • MongoDB
  5. 2014 — 2017

    Software Engineer · Austem, Korea

    Engineered and enhanced an ERP system for an automotive manufacturer using .NET Framework, integrating automated workflows to improve efficiency and scalability. Collaborated with engineers to digitize business operations, reducing manual workloads and improving process automation across teams

    • C#
    • .NET Framework
    • MS SQL Server

Projects

  1. Turnstone Data

    Integrated parking data platform. Aggregates custom data formats, processes, and models datasets behind the scenes. Visualize inventory tracking, manage drift, analyze demand, report trends, balance zones and policies, and program rates through interactive maps and charts.

    • React
    • Next.js
    • deck.gl
    • Mapbox
    • Python
    • FastAPI
    • PostgreSQL
    • AWS
    Turnstone Data app homepage
  2. Blackjack

    Mobile Blackjack game. Mostly worked for implementing APIs for authentication, purchase and notification system.

    4.5
    • TypeScript
    • Node.js
    • Firebase
    Blackjack App Store preview
  3. LovingSitter

    Web app for dog owners to find dog sitters in real time. Features include secure authentication, instant notifications, real-time messaging, and a mock payment system for seamless booking

    • React
    • Express.js
    • Socket.io
    • MongoDB
    • Stripe
    LovingSitter app homepage
  4. Personal Portfolio

    An old version of portfolio build with Gatsby and deployed with Netlify.

    • Gatsby
    • Netlify
    Personal Portfolio homepage