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© 2026 Khanh Dinh. I build software and write about the journey.

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About

Projects, experiments and essays by Khanh Dinh (beiryu): full-stack engineering, AI products, and lessons from shipping.

Experience

  1. Jul 2026 – now · Da Nang

    Software Engineer · One Tech Stop

    Full-stack engineer on EPCAS, an enterprise cost allocation platform for Ocean Network Express.

    • Next.js
    • TypeScript
    • React
    • FastAPI
    • Python
    • PostgreSQL
    • BigQuery
    • Firebase
    • Google Cloud
    • Docker
    • Tailwind CSS
    Details
    • Develop and test features and bug fixes from backlog items, ensuring quality and timely delivery.
    • Build and maintain CI/CD pipelines to streamline deployments.
    • Contribute to QA processes and analysis tools; help define non-functional requirements (performance, security, reliability).
    • Assist leaders in refining the technical backlog, roadmap and risk management.

    EPCAS#

    Team size 12 · 7/2026 - now · Full Stack Developer

    • Enterprise cost allocation platform embedded as an iframe inside ONE's internal EPIC system.
    • High-performance file ingestion for large CSV/Excel uploads via GCS signed URLs, with real-time status via Firebase.
    • BigQuery as the analytics warehouse for historical cost data.
    • Cost review and file management UIs with Next.js 15, TanStack Table (virtualized), React Query and Jotai.
    • FastAPI (async), SQLModel/SQLAlchemy and Alembic-managed PostgreSQL migrations.
    • CI/CD and containerized services on Cloud Run with GCP Secret Manager.
  2. Oct 2025 – now · Remote

    Full Stack Engineer · SquarePing

    Backend features, admin dashboard and GCP/AWS deployments for a SaaS product.

    • Node.js
    • React
    • Redis
    • Google Cloud
    • AWS
    • Microservices
    Details
    • User management, group management, payment processing and other core backend features.
    • Maintain and enhance the React admin panel and dashboard.
    • Package and deploy microservices to Google Cloud Platform; manage deployments across GCP and AWS.
    • Code reviews and technical guidance; Redis caching strategies to cut database load.
  3. Aug 2025 – now · Remote

    Full Stack Developer · DZNS

    MVP development for clients across industries, from concept to production.

    • React
    • Node.js
    • MongoDB
    • Express
    • TypeScript
    • Docker
    • Kubernetes
    • AWS
    • Google Cloud
    Details
    • Specialize in Minimum Viable Products for clients across industries and use cases.
    • End-to-end full-stack delivery from initial concept to production-ready applications.
    • Technical consultation with clients; rapid prototyping and iteration to validate ideas.
    • Code quality, scalability and maintainability under tight MVP deadlines.
  4. Jun 2024 – now · Ho Chi Minh City

    Backend Engineer · Gameloft

    Backend features, system integrations and game server infrastructure for Claynosaurs and Applaydu.

    • NestJS
    • MongoDB
    • Redis
    • Colyseus
    • Node.js
    • AWS
    • React
    • Snowflake
    Details
    • Develop and maintain backend features and system integrations: custom APIs, database modeling and design.
    • Collaborate with clients on requirements; break down tasks and define sprint goals with team leaders.
    • Review and merge pull requests; support deployments and monitor production systems.
    • Set up automation for on-premise and cloud deployment; mentor junior developers.

    Claynosaurs#

    Team size 10 · 9/2024 - now · Backend

    • Game server infrastructure on Colyseus; primary owner of social (profile, friend, clan, habitat) and combat (PvP/PvE/matchmaking) microservices.
    • Load testing and performance monitoring with Sentry to optimize WebSocket message efficiency.
    • Domain Driven Design across the microservice ecosystem; Colyseus playground schema cut documentation overhead by 40%.
    • Friend recommendation engine (graph algorithms), real-time clan chat via Redis pub/sub, Redis sorted-set leaderboards.

    Applaydu#

    Team size 6 · 6/2024 - 9/2024 · Backend

    • Optimized email delivery system: 80% faster processing while respecting provider rate limits.
    • AI-powered story reading feature with DevOps/Infra pipelines, +25% user engagement.
    • Fixed CRON memory leaks, 40% lower server memory consumption.
  5. Sep 2024 – Mar 2025 · Hanoi

    Frontend Engineer · Hachium

    Led frontend for an edtech experimental platform serving 200 regions and multiple languages.

    • TypeScript
    • React
    • TanStack Query
    • Zustand
    • Tailwind CSS
    • Storybook
    • Figma
    Details
    • Web and legacy system development, custom APIs and database design.
    • Scalable system supporting multiple countries and languages across 200 national and territorial regions.

    Edtech Startup#

    Team size 10 · 10/2024 - 3/2025 · Frontend

    • Architected the experimental platform frontend with React and TypeScript, including i18n.
    • Common component library documented in Storybook: UI development 30% faster, onboarding time halved.
    • Code splitting and lazy loading improved initial load by 45%; React Hook Form validation cut form bugs by 60%.
  6. Sep 2023 – Jun 2024 · Ho Chi Minh City

    Software Engineer · AgileOps

    Full-stack work on web3, gaming and preventative healthcare products.

    • NestJS
    • PostgreSQL
    • React
    • Next.js
    • Tailwind CSS
    • Serverless
    • OpenAI
    • AWS
    Details
    • Full development cycle: requirements, database design, architecture decisions, MVP creation.
    • APIs, multi-environment monitoring and third-party integrations.

    Web3App#

    Team size 4 · 12/2023 - 6/2024 · Fullstack

    • Led requirements, database design and architecture for a Web3 portfolio management app; MVP shipped 30% ahead of estimate with 99.9% uptime.
    • Registration via email/phone/socials, multi-currency portfolio and transaction management, real-time valuation via Coinmarketcap and TradingView, Firebase alerts, Coingecko marketplace data.

    Stellar#

    Team size 3 · 12/2023 - 6/2024 · Backend

    • Longevity and preventative healthcare app: integrations with Garmin, Polar, Fitbit, Withings, Apple Watch, Dexcom, Spotify.
    • OpenAI-powered health insights and AI coach (+60% engagement), meal image recognition at 95% accuracy.
    • Multi-layer caching with AWS DAX and ElastiCache cut database load by 60%.
  7. Sep 2022 – Sep 2023 · Ho Chi Minh City

    Software Engineer · Netpower

    Marketplace applications for Norwegian clients: RockExchange and Lokalmat & Specialty.

    • NestJS
    • React
    • MobX
    • PostgreSQL
    • RabbitMQ
    • Elasticsearch
    • Redis
    • Next.js
    • Strapi
    Details
    • Full-stack development on marketplace applications in Norway; data migration, tracking and monitoring.
    • Data caching and cron-based synchronization across platforms; international team working in English.

    RockExchange#

    Team size 5 · 9/2022 - 3/2023 · Fullstack

    • Construction materials exchange connecting contractors, owners, manufacturers and suppliers.
    • Elasticsearch made search 200% faster than SQL; Mapbox geospatial search; real-time notifications (+50% response rate).
    • RBAC/ABAC policy handler and ACL rules; Redis caching (-40% DB load); RabbitMQ message queues.

    Lokalmat & Specialty#

    Team size 7 · 3/2023 - 9/2023 · Fullstack

    • Food trading platform listing Norwegian food and drink products with ads and related services.
  8. Oct 2021 – Jan 2022 · Ho Chi Minh City

    Software Engineer Intern · Hybrid Technologies

    Internship building RESTful APIs with Laravel.

    • PHP
    • Laravel
    Details
    • Implemented RESTful API endpoints using Laravel.

Education

  1. Jan 2019 – Jan 2024 · Ho Chi Minh City

    BSc Computer Science · University of Science, VNU-HCM

    Bachelor of Science in Computer Science, GPA 3.4/4, graduated with High Honors.

    Details
    • Degree: Bachelor of Science in Computer Science
    • GPA: 3.4/4
    • Graduation: High Honors