Anh Nguyen

Senior Fullstack Engineer

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thienanhnguyen06@gmail.com

Remote

Summary

Experienced Senior Software Engineer/Devops Engineer with 8 years of experience focusing on developing/architecturing various applications and systems using Typescript, Python, SQL, MongoDB, and AWS. Experienced domains are AI, financial and ecommerce services.

Passionate about developing innovative solutions for AI and the financial services field. Strong understanding of MongoDB, SQL, and AWS. Seeking an opportunity to work on meaningful projects that will make an impact.

Achievements

AI - LLM Agentic system

Refactored a legacy synchronous HTTP-based system into a highly scalable event-driven architecture, reducing Sentry-reported errors by ~70%. Ensured sustained performance and reliability under peak traffic, specifically optimizing pipelines for LLM data extraction, preprocessing, and ingestion.

Crawling system

Built successfully a products crawling system using a chain of AWS Lambda functions, ensuring stability and performance. There are currently about 100k products that have been crawled and more and more products are being crawled daily by the system.

High performance real-time data processing in an AI application

Developed and optimized an AI-based application to be able to process real-time requests between the Backend and Frontend.

Introducing a universal search feature that can enhance the productivity of employees

Developed a universal search feature that allows employees to search by many fields with excellent performance. It increased the employees' productivity by 20%.

Skills

Problem SolvingTypescript - NodeJS (ExpressJS, NestJS), ReactJSPythonDevOps - AWSDatabaseEvent Driven ArchitectureScalable Production DeploymentMicroservicesGraphQLPrompt EngineeringFrontend

Certifications

Education

Engineer Degree in Information and Communication System

Hanoi University of Science and Technology

PFIEV - Programme de Formation d'Ingénieurs d'Excellence au Vietnam

Professional Experience

Atrae
Japan, Remote

Staff Backend - Devops Engineer

Led the architectural design and infrastructure strategy for the backend system of an AI Agentic recruitment application.

  • Technologies: LLMs, Node.js (NestJS), TypeScript, Python, AWS, PostgreSQL.
  • Spearheaded the design and implementation of highly-scalable microservices, ensuring system resilience under heavy loads.
  • Engineered robust fault-tolerant solutions for critical system components, including complex multi-database synchronization and event-driven worker architectures.
  • Drove company-wide performance optimizations, successfully balancing maximum computational speed with stringent cost-efficiency targets.
  • Architected and executed the complete migration of legacy DevOps infrastructure to a modernized, fully AWS-based ecosystem.
  • Established infrastructure best practices and guidelines across the engineering team, leading to significant cost reductions and performance gains.
  • Acted as the primary technical escalation point for critical infrastructure incidents, executing complex data migrations, recovery plans, and zero-downtime massive scaling events.
2022
Cashy
Austria, Remote

Senior Full Stack Engineer

Developed and maintained various features regarding financial support with the full cycle from Frontend to Backend and DevOps.

  • Technologies: NodeJS (NestJS), Typescript, Python, MongoDB, React, GraphQL, AWS.
  • Designed and implemented full workflow of the products crawlers using entire serverless AWS infrastructure.
  • Optimize MongoDB performance against high traffic usage.
  • Implemented a universal search using MongoDB AtlasSearch with best performance across dozens of gigabytes of records.
  • Designed and implemented new database migration mechanism.
  • Improved website's SEO and performance.
  • Integrated with LLMs OpenAI/ChatGPT to improve products' similarity search and products crawlers.
2021
Presspay (Fintech)
Australia, Remote

Full Stack Engineer

Developed and maintained a continuous customer assessment system for ranking and loans.

  • Full development on AWS infrastructure (DynamoDB, Lambda, Cognito, AWS CDK)
  • Migrated entirely old CMS (used React Admin) to brand-new project using Redux Toolkit and Tailwinds.
  • Integrated with banking APIs across Australian banks.
  • Ensured data consistency and highest security on customers' transaction data.
2019
SETA International
Vietnam, Hybrid

Full Stack Developer

Project Veritone (AI platform). Developed and maintained core modules leveraging the AI platform built as separate engine containers.

  • Technologies: NodeJS, Python, Golang, gRPC, GraphQL, PostgreSQL, NextJS.
  • Designed and implemented a new Single Sign On service for biometric authentication application.
  • Focused strongly on security and performance which are 2 keys of the product.
  • Built automation test framework from the beginning for all important APIs into the CI/CD process.
2018
SETA International
Vietnam, Hybrid

Backend Developer, Backend Lead

Built an AI-based annotation application from the beginning.

  • Contribute technical designs and built codebases across Python, NodeJS, Golang, MongoDB and PostgreSQL.
  • Built CI/CD for entire team.
  • Took part in building complex web application using React, HTML Canvas.
  • Worked directly with CEO to collect requirements.