Full-stack developer · Ho Chi Minh City

Full-stack software for SaaS, internal tools, and AI-assisted workflows.

I design and ship web products end-to-end — from interfaces and APIs to data integrity, automation, testing, and deployment.

I work best on clearly scoped projects with reviewable milestones and transparent handoff.

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Hàng Nhựt Long
Current role
Software Engineer
Education
HCMUT · ’26
English
L&R 935 S&W 310
Freelance
Flexible part-time · defined scope

01 / Experience

Experience & education

Work history, academic background, and certifications.

Aug 2025 – Present

Work

Software Engineer

Lumin · Full-time

Ho Chi Minh City, Vietnam · Hybrid

  • Owned web optimization across Lumin’s Next.js marketing and form-template platform, contributing roughly 180 merged PRs across the main platform and CMS repositories.
  • Hardened Strapi–Meilisearch synchronization after a production outage with safer lifecycle handling, incremental reindexing, bulk-update APIs, and CMS controls for Marketing-managed content.
  • Built cross-site analytics and observability with shared events, GTM integrations, advertising instrumentation, and Datadog visibility for upload and search-index failures.
  • Improved conversion and content workflows across upload flows, trial CTAs, locale routing, mobile download-first behavior, SEO audits, content imports, and redirect migrations.
  • Helped migrate the marketing experience into a consolidated Next.js frontend, implementing navigation, footer, and landing-page interfaces to Figma-level fidelity.

2022 – 2026

Education

Computer Science

Ho Chi Minh City University of Technology

ETS

Certifications

TOEIC English proficiency

Educational Testing Service (ETS)

Listening & Reading
935
Speaking & Writing
310

02 / Product engineering

End-to-end products

Built across system design, backend architecture, frontend integration, testing and deployment.

03 / Developer tools & AI

Tools & infrastructure

Secondary evidence — automation, evaluation, reliability, and privacy engineering.

04 / Workflow

How I work

A small loop that makes the next review point clear before more code is added.

  1. 01

    Clarify the workflow

    I map the user, input, output, edge cases, and the smallest version worth shipping.

  2. 02

    Test the risk first

    I put tests around concrete risks such as concurrent updates, invalid input, or a slow dependency.

  3. 03

    Review in small milestones

    Each milestone has something that can be run or reviewed before the next part expands the scope.

  4. 04

    Leave a usable handoff

    I record setup, environment variables, decisions, and known limits so the next change starts with context.

05 / Capabilities

Working toolkit

Tools I use in current work. The projects above are the proof; this is the index.

Interfaces

React, Next.js, TypeScript, JavaScript, HTML, CSS, TailwindCSS

Backend and APIs

Node.js, NestJS, Java, Spring Boot, REST APIs, Prisma, PostgreSQL

Automation and data

Python, Pandas, scraping, scheduled jobs, CSV and API exports

Delivery

Jest, property-based testing, Docker, Postman, GitHub, setup and handoff notes

06 / Get in touch

Tell me what needs to work

Send the goal, current problem, expected deadline, and budget range. I will reply with fit questions or say clearly if the project needs experience or availability I cannot provide.

Email the project brief
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