NDT
Navigation
RESUME.PDF
INDEX // ABOUT ME

About Me

Senior Backend Software Engineer with extensive experience building high-scale fintech, lending, and enterprise platforms.

Nguyen Duy Toan
SYS.ID // NDT_01 VERIFIED
// PROFILE SUMMARY

Hi, I'm Nguyen Duy Toan

I'm a Senior Backend Software Engineer based in Ho Chi Minh City, Vietnam with extensive hands-on experience architecting and operating resilient backend systems across Fintech, Lending, E-commerce, and Enterprise SaaS platforms.

My technical foundation is centered around Java, Spring Boot, Spring Cloud, Kafka, AWS, Docker, Kubernetes, and distributed data stores (MySQL, DynamoDB, Oracle, SQL Server, Redis).

I specialize in end-to-end API lifecycle design, third-party fintech provider integrations (bank statement analyzers, decision engines, payment gateways), and performance optimization for mission-critical enterprise systems.

EXTENSIVE
Backend Engineering
$50M+
Annual FinTech Flow
99.7%
Production Availability
CAREER TRAJECTORY & ENGINEERING TIMELINE

Professional Experience

Senior Software Engineer - TymeX

Dec 2021 - Dec 2025

Personal Lending Platform (South Africa) — A digital lending platform for the South African market, supporting automated eligibility checks, bank statement analysis, affordability calculation, disbursement, and DebiCheck repayment flows.

// KEY RESPONSIBILITIES & ACHIEVEMENTS:
  • ✦ Designed, developed, and maintained core backend services for a large-scale digital lending platform
  • ✦ Integrated third-party services for bank statement analysis, decision engines, and repayment processing
  • ✦ Investigated and resolved production issues across data pipelines and business-critical flows
  • ✦ Collaborated closely with internal teams and partners to ensure reliability and stable delivery

Backend Developer - Kido Group

Jun 2021 - Dec 2021

Sales Management Platform — Built a comprehensive sales management system from scratch to support sales staff, trade departments, administrators, distributor interfaces, and reporting dashboards.

// KEY RESPONSIBILITIES & ACHIEVEMENTS:
  • ✦ Designed backend services for inventory, promotions, and loyalty programs
  • ✦ Built and maintained RESTful APIs supporting mobile and admin applications
  • ✦ Supported business teams by resolving logic and data issues

Java Software Engineer - M_Service (MoMo)

Jun 2020 - Apr 2021

Merchant Solution & Partner Portal — Built systems to support merchant onboarding within the MoMo ecosystem, allowing users to register as merchants, submit business information for KYC/KYB verification, and manage transactions and promotions.

// KEY RESPONSIBILITIES & ACHIEVEMENTS:
  • ✦ Built backend services for merchant onboarding and KYC/KYB workflows
  • ✦ Designed APIs for merchant registration and profile management
  • ✦ Developed authentication flows for SME merchants
  • ✦ Implemented features for prepaid cards, payouts, and transaction reporting

Backend Developer - GNT Vietnam

May 2019 - Jun 2020

Taikou Law (Debt Collection System) & Jade (Online Strategy Game) — Web-based system for debt collection and multiplayer strategy game featuring guilds, rankings, boss battles, and loot systems.

// KEY RESPONSIBILITIES & ACHIEVEMENTS:
  • ✦ Migrated legacy system from PHP to Java (Spring Boot)
  • ✦ Rebuilt core data modules and improved maintainability and performance
  • ✦ Built backend APIs and gameplay logic for multiplayer features
  • ✦ Managed deployment and ensured server stability

Software Engineer - IMT

Jan 2018 - May 2019

DMS ONE - Distribution Management System — Enterprise-grade system enabling centralized control across HQ, distributors, and on-field sales teams.

// KEY RESPONSIBILITIES & ACHIEVEMENTS:
  • ✦ Customized enterprise system features based on client requirements
  • ✦ Led small teams, handled task allocation and mentoring
  • ✦ Managed deployment and reporting modules
CORE ENGINEERING EXPERTISE & CAPABILITIES

Architectural Capabilities

Microservices Architecture

Design and build decoupled microservices architectures using Spring Boot, Kafka event streaming, and API gateways, ensuring 99.7%+ availability for enterprise applications.

Cloud & DevOps Engineering

Deploy and orchestrate resilient applications on AWS (ECS, RDS, MSK), containerization with Docker and Kubernetes, and automated CI/CD deployment pipelines via Jenkins.

High-Throughput Backend

Develop robust backend engines with Java, RESTful APIs, caching strategies (Redis), data sharding (MySQL, Oracle, DynamoDB), and sub-100ms latency query optimization.

ENTERPRISE TOOLCHAIN & ECOSYSTEM

Technologies & Frameworks

Java

Java

Backend
Spring Boot

Spring Boot

Backend
Spring Cloud

Spring Cloud

Microservices
Play Framework

Play Framework

Backend
Kafka

Kafka

Streaming
AWS

AWS

Cloud
MySQL

MySQL

Database
DynamoDB

DynamoDB

Database
Oracle DB

Oracle DB

Database
SQL Server

SQL Server

Database
Redis

Redis

In-Memory
Docker

Docker

DevOps
Kubernetes

Kubernetes

DevOps
Jenkins

Jenkins

CI/CD
Elasticsearch

Elasticsearch

Search
Prometheus

Prometheus

Monitoring
Grafana

Grafana

Monitoring
Python

Python

Backend
JavaScript

JavaScript

Frontend
Git

Git

VCS
DEEP DIVE & WORKING PHILOSOPHY

More About Me & FAQ

Languages: Java (primary), Python, JavaScript, HTML, CSS. Frameworks: Spring Boot, Spring Cloud, Play Framework. Messaging: Kafka, MSK. Databases & Cache: MySQL, DynamoDB, Oracle, SQL Server, Redis. Cloud & DevOps: AWS, Docker, Rancher, Kubernetes, Jenkins. Search & Observability: Elasticsearch, Prometheus, Grafana. Testing & Tools: Postman, JMeter, IntelliJ, DataGrip, SourceTree. I have extensive experience building microservices architectures, RESTful APIs, and distributed systems. I also work with CI/CD pipelines, monitoring tools, and various testing frameworks.
With extensive experience across high-scale engineering, I've built scalable backend systems in Fintech, Lending, E-commerce, and Enterprise platforms. I've designed and developed core backend services for large-scale digital lending platforms, integrated third-party services for bank statement analysis and decision engines, and built comprehensive sales management systems. My expertise spans payment systems, KYC/KYB platforms, merchant solutions, and enterprise distribution management systems.
I hold a B.Sc. in Computer Science from Ton Duc Thang University (GPA: 3.1/4.0). My academic foundation combined with continuous self-learning and hands-on experience has enabled me to stay current with emerging technologies and best practices in software engineering.
I thrive in collaborative environments and have experience working in cross-functional teams. I use agile methodologies like Scrum and Kanban, Git/GitHub for version control, and tools like Jira for project management. I'm skilled in code reviews, pair programming, and leading technical discussions. I believe in clear communication, knowledge sharing, and continuous improvement.
GitHub Logo
// OPEN SOURCE & CODE REPOSITORIES

Explore My GitHub Code

Check out my public repositories, architecture samples, code experiments, and open-source contributions.

Visit @DuyToanIT on GitHub
OPEN FOR SYSTEM ARCHITECTURE & BACKEND ROLES

Ready to scale your next high-throughput platform?

Whether you are designing a new microservice ecosystem, migrating legacy infrastructure, or optimizing database throughput, let's connect and discuss how I can contribute.

Initiate Contact Review Resume (PDF)