Sothaninn Sieng

Lead Software Engineer

With an appetite for the unknown and an instinct to connect the dots.

Hi, I’m Ninn, a Lead Software Engineer at Olympic Collectible AI Solutions (OCAIS).

More about me
PLAYER PROFILE

Engineering focus: full-stack delivery, data quality, and reliability.

BASED IN THE SEATTLE AREA · BUILDING AT OCAIS

MS in Computer Science · Seattle University · 2025

Another engineer, another portfolio? Fair. Let’s make this worth your while.

INDUSTRY & SPONSORED WORKOCAISGoogle / TCG capstoneSDI Engineering capstoneBilimetrix USACostco Wholesale

TODAY

Leading engineers. Delivering outcomes.

From client needs to shipped products.

Internal review & operations tool

VerifAI

Project owner · Engineering team lead

Designed and lead development of AI-review tools that help teams verify and correct card data across 2.5M+ entries.

Tech stack:ReactVitePythonFastAPIPostgreSQLMongoDBAWS EC2AWS S3DockerPytest
My work on VerifAI

Now that I have your attention, time for the origin story. Those results didn’t come with the job title. Here’s how I earned both.

EXPERIENCE

My engineering experience

Across industries, one focus: built to work. Built to last.

  1. Current roleJun 2026–present

    Lead Software Engineer

    Olympic Collectible AI Solutions (OCAIS)

  2. Software Engineer

    May 2025–Jun 2026
  3. Software Engineer Intern

    Oct 2024–May 2025
  • Repacks Marketplace

    Connected shopping, payments, collections, and fulfillment across the stack.

    Tech stack:Next.jsReactPythonFastAPIPostgreSQLStripeAWS ECSTerraformPytestPlaywright
  • Repacks iOS App

    Extended the team’s SwiftUI app with checkout, payouts, passkeys, rewards, and deep links aligned with the web marketplace.

    Tech stack:SwiftSwiftUIUIKitREST APIsWebKitAuthenticationServicesStripeXCTest
  • VerifAI

    Put AI results under human review with correction tools and audit trails.

    Tech stack:ReactVitePythonFastAPIPostgreSQLMongoDBAWS EC2AWS S3DockerPytest
  • Dataset Quantifier · Software Engineer Intern

    Cut image processing from 3s to 0.1s per image; built evaluation tools contributing to 20% better model accuracy.

    Tech stack:PythonPandasImage processingModel evaluationMultiprocessingGPU computing
SEP 2024 — MAR 2025

Software Engineering Capstone

Sponsored by Google & Trusted Computing Group

  • TPM Fuzz Testing Pipeline

    Contributed to TPM fuzz-testing design and independently authored a research roadmap for command sequencing and input mutation.

    Tech stack:GoDockerFuzz testingSecurity researchTechnical writing
DEC 2022 — JUN 2023

Software Engineering Capstone

Sponsored by SDI Engineering

JUN — AUG 2024

Software Engineer Intern

Bilimetrix USA

  • Healthcare Image Search & Analysis

    Increased quantified images by 10% with color detection; improved image search and testing for neonatal healthcare software.

    Tech stack:C#ASP.NETRazor PagesUnit testing
JAN — MAR 2024

Site Reliability Engineer Intern

Costco Wholesale

  • SRE Workflow Automation & Monitoring

    Automated SRE intake to increase submissions by 60% and surfaced critical-service metrics in monitoring dashboards.

    Tech stack:Power BIPower AppsPower AutomateAzure DevOps

Still wondering if I’m the right fit? I’ve got a few more projects up my sleeve.

Projects

Native iOS commerce app

Repacks iOS App

Built SwiftUI features for Repacks: checkout, wallets, passkeys, rewards, and deep links aligned with the web marketplace.

Tech stack:SwiftSwiftUIUIKitREST APIsWebKitAuthenticationServicesStripeXCTest

OCAIS backend engineering

Pricing Data Pipeline

Implemented pricing APIs and recoverable background processing, preserving price history in PostgreSQL.

Tech stack:PythonFastAPIPostgreSQLRedis StreamsBackground jobs

Team project

AI products & clickstream analytics

Delivered text analysis and API integration for a team website that won first place in a Seattle University computer science student-organized competition.

Tech stack:Next.jsJavaScriptREST APIsAWS API GatewayAWS Comprehend

Full-stack academic project

Date Planner

Connected venue discovery and reviews to Express/MongoDB APIs, with integration tests covering the requests.

Tech stack:AngularTypeScriptNode.jsExpressMongoDBMochaChai
More projects in systems, databases, and software design

Team software testing project

Chess Engine Test Suite

Tested chess move generation, notation, position serialization, and game export with C# xUnit.

Tech stack:C#xUnitUnit testing

Full-stack academic project

Gardening Essentials Ecommerce

Connected storefront and admin workflows to product APIs, keeping carts consistent when products are removed.

Tech stack:ReactNode.jsExpressMongoDB

Academic project

Distributed asynchronous routing

Simulated four-node routing with asynchronous messages and delayed-packet handling.

Tech stack:PythonNetworkingDistributed systemsAsynchronous messaging

OCAIS hardware simulation prototype

Sixpicker Camera & Scanner Simulation

Made multithreaded camera and scanner workflows testable without hardware through Python simulation and unit tests.

Tech stack:PythonHardware simulationMultithreaded systemsDependency injectionunittest

Web application project

Document Editor

Organized document creation, editing, and storage around an Express/MySQL MVC architecture.

Tech stack:ExpressEJSMySQLREST APIsMVC

Object-oriented coursework simulation

Grocery Management System

Modeled grocery inventory, customer orders, and delivery workflows in C#.

Tech stack:C#Object-oriented designInterfaces

Networking project

HTTP Web Proxy

Routed HTTP requests through a Python proxy with local caching and explicit server-error handling.

Tech stack:PythonSocketsTCP/IPHTTPCaching

Database project

Social Network Database

Designed relational schemas and SQL procedures for a PHP social-network application.

Tech stack:SQLPHPHTMLDatabase design

WHAT’S NEXT

Your toughest problem could be
my next favorite project.

Full-stack development · Cloud infrastructure · Workflow automation · Engineering leadership

Email Ninn