Available for Internships & Jobs

Hi, I'm Dinh Quoc Duy

I am a

Final-year Information Technology student with internship experience in backend development using Node.js, NestJS, MongoDB. Eager to grow into Fullstack Development, quick to learn, and experienced in leveraging AI tools to accelerate development, automate testing, and improve software quality while maintaining engineering best practices.

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IT Engineer

HUCE (2022 - 2026)

Focused on Software Engineering, Databases, and System Design.

04 Months

At SotaTek

Hands-on internship on large-scale web data collection platform.

02 Products

Real-world Projects

Fully functional systems with public code repositories on GitHub.

80%

Code Acceleration

Achieved via performance optimization and AI assistant integration.

Work Experience

Backend Developer Intern @ A2Z Technology

July 2026 - September 2026

Internship

Core Project:

Ecochic (Internal Enterprise Management & Digital Signing Platform)

> Financial Reconciliation

Developed backend modules for financial reconciliation, including bank transaction import, transaction matching, candidate generation, cancellation, idempotent processing, and Excel export.

> Digital Signing Workflows

Designed and implemented digital signing workflows between FNM, Signing Service, and Signing PWA, supporting multi-step approval and signer orchestration.

> Digital Signatures Integration

Integrated digital signatures using PAdES/PKCS#7 (CMS), including PDF document signing and signature verification.

> Async Processing & Caching

Implemented asynchronous processing and caching using BullMQ/Redis for background jobs and performance optimization.

Backend Developer Intern @ SotaTek Technology Joint Stock Company

October 2025 - January 2026

Internship

Core Project:

Radar (Large-scale Web Data Collection Platform)

> Platform Development

Participated in the development of "Radar," a large-scale web data collection platform designed to collect and process data automatically.

> Proxy Rotation

Researched and improved multi-vendor proxy rotation strategies, enhancing data collector stability and reducing IP blocking rates by target websites.

> Message Queue Integration

Integrated Kafka message queues for distributed log events and asynchronous processing, ensuring system resilience and seamless data paths.

> Web3 Services

Developed features for Web3 services, including wallet login with signature verification, Twitter OAuth2, and real-time smart contract listeners via WebSockets on the Sepolia test network.

> AI & Automation

Utilized AI tools to accelerate deployment, create unit tests, automate testing, and improve efficiency while reviewing output before integration.

Education

Information Technology Student @ Hanoi University of Civil Engineering (HUCE)

2022 - 2026

Degree

Core Study / Major:

Major: Information Technology

> Academic Foundation

Acquired core engineering knowledge in programming, databases, software architecture.

> English Proficiency

Ability to read and understand technical documents in English.

Featured Projects

Total: 3 projects

Ecochic - Internal Business Management Platform

Role: Backend Developer Intern (Microservices Architecture)

Clear timeframe: July 2026 - Present

Description: Internal enterprise platform supporting HRM, financial management, and digital signing workflows, built with a microservices-oriented architecture.

Project Link: Internal Enterprise Project (Confidential Source)

Case Study

Tech Stack:

NestJSFastifyPostgreSQLTypeORMMongoDBRedisBullMQAWS S3TypeScriptReactTanStackREST APIJWT/SSOSwaggerGit

Responsibilities:

Financial Reconciliation: Developed backend modules for financial reconciliation, including bank transaction import, transaction matching, candidate generation, cancellation, idempotent processing, and Excel export.
Digital Signing Workflows: Designed and implemented digital signing workflows between FNM, Signing Service, and Signing PWA, supporting multi-step approval and signer orchestration.
Digital Signatures Integration: Integrated digital signatures using PAdES/PKCS#7 (CMS), including PDF document signing and signature verification.
Asynchronous Processing & Caching: Implemented asynchronous processing and caching using BullMQ/Redis for background jobs and performance optimization.
API Development & Testing: Developed and tested REST APIs, Swagger documentation, and E2E test cases for production workflows.

IT Recruitment Platform

Role: Fullstack Developer (Backend Focus, Individual Project)

Clear timeframe: September 2025 - March 2026

Description: A closed recruitment portal system for the IT industry, integrating Artificial Intelligence (AI) solutions to automate the resume screening process.

Project Links: Backend Frontend

Case Study

Tech Stack:

Next.jsReactRedux ToolkitRTK QueryTailwind CSSNestJSTypeScriptPassport.jsMongoDBRedisBullMQCASLGemini & Groq APISocket.io

Responsibilities:

Asynchronous Architecture (BullMQ & Redis): Move heavy tasks (AI-based CV analysis, scheduled email sending) to a background queue to improve system performance and prevent main thread blocking.
Caching & Performance: Implement explicit Redis-based caching with proactive disabling, improving console/API performance.
Security & Authorization: Implement JWT access token rotation/refresh and detailed role-based access control using CASL.
Hybrid Matching System: Design a weighted scoring algorithm to match candidates and job descriptions based on skills, experience, qualifications, and education.
Applying artificial intelligence (AI) to create unit tests, automate test execution, write commit messages, and use Google Stitch to create responsive UI prototypes, reducing development time while maintaining code quality.

Laptop Store Website

Role: Backend Developer (Server-side Rendering Project)

Clear timeframe: June 2025 - July 2025

Description: A web-based e-commerce platform that allows users to browse laptops, search by multiple criteria, manage shopping carts, place orders, and view purchase history.

Project Link: https://github.com/QuocDuy21-10/LaptopShop

Case Study

Tech Stack:

Node.jsExpress.jsTypeScriptPrisma ORMMySQLPassport.jsEJSHTMLCSSJavaScript

Responsibilities:

Implemented Authentication using Passport.js with session-based access control.
Designed and integrated Prisma Transaction logic to validate product availability before creating orders, preventing overselling and maintaining database consistency.