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Full-Stack Engineer in Melbourne, Australia, shipping production-grade SaaS on AWS. I focus on backend-heavy systems—billing platforms, event-driven subscription lifecycles, sync pipelines, and reliable cloud infrastructure—with a strong bias for zero-downtime migrations and performance improvements. I build secure, testable services and automation around CI/CD, IAM, and observability. I’ve implemented high-throughput data processing, multi-provider billing integrations (Stripe/PayPal), and production database migrations while maintaining low latency and data integrity.…Full-Stack Engineer in Melbourne, Australia, shipping production-grade SaaS on AWS. I focus on backend-heavy systems—billing platforms, event-driven subscription lifecycles, sync pipelines, and reliable cloud infrastructure—with a strong bias for zero-downtime migrations and performance improvements. I build secure, testable services and automation around CI/CD, IAM, and observability. I’ve implemented high-throughput data processing, multi-provider billing integrations (Stripe/PayPal), and production database migrations while maintaining low latency and data integrity.

Sonny Nguyen

Full Stack Developer, Web Developer, Back-End Developer, +3

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Full-Stack Engineer in Melbourne, Australia, shipping production-grade SaaS on AWS. I focus on backend-heavy systems—billing platforms, event-driven subscription lifecycles, sync pipelines, and reliable cloud infrastructure—with a strong bias for zero-downtime migrations and performance improvements. I build secure, testable services and automation around CI/CD, IAM, and observability. I’ve implemented high-throughput data processing, multi-provider billing integrations (Stripe/PayPal), and production database migrations while maintaining low latency and data integrity.…Full-Stack Engineer in Melbourne, Australia, shipping production-grade SaaS on AWS. I focus on backend-heavy systems—billing platforms, event-driven subscription lifecycles, sync pipelines, and reliable cloud infrastructure—with a strong bias for zero-downtime migrations and performance improvements. I build secure, testable services and automation around CI/CD, IAM, and observability. I’ve implemented high-throughput data processing, multi-provider billing integrations (Stripe/PayPal), and production database migrations while maintaining low latency and data integrity.

Available to hire

Full-Stack Engineer in Melbourne, Australia, shipping production-grade SaaS on AWS. I focus on backend-heavy systems—billing platforms, event-driven subscription lifecycles, sync pipelines, and reliable cloud infrastructure—with a strong bias for zero-downtime migrations and performance improvements.

I build secure, testable services and automation around CI/CD, IAM, and observability. I’ve implemented high-throughput data processing, multi-provider billing integrations (Stripe/PayPal), and production database migrations while maintaining low latency and data integrity.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Aragonese

Beginner

Work Experience

Software Engineer at Dustan Consulting Group

February 1, 2026 - Present

Built and shipped a B2B SaaS risk quantification platform to production. Architected reusable scenario modeling components, reducing duplicated work by ~30–50%. Led zero-downtime migration of a legacy risk model to a new architecture without production disruption. Implemented multi-provider billing (Stripe + PayPal) including subscriptions, refunds, and reconciliation; built an event-driven subscription lifecycle via webhooks with billing, CRM, and user state synchronization. Owned production database migrations (Prisma/PostgreSQL), deploying schema changes safely. Resolved critical production issues including race conditions, data integrity bugs, and simulated edge cases.

Full-Stack Engineer at FinyBooth

July 1, 2025 - February 1, 2026

Architected and operated an AWS production AI-powered SaaS for a photo booth platform using NestJS, MongoDB, and Redis. Designed an async job pipeline processing ~1,500 AI tasks/month while maintaining sub-200ms API latency. Implemented Redis caching and rate limiting, reducing database reads by ~60%. Containerized services with Docker and deployed to ECS Fargate using least-privilege IAM. Built structured JSON logging and centralized log aggregation via CloudWatch. Integrated Stripe subscriptions with webhook verification and idempotent event handling. Implemented CI/CD using AWS CodePipeline and CodeDeploy to improve release reliability.

Founder & Full-Stack Engineer at Finy Booth – SaaS Photo Booth Platform

July 1, 2025 - January 31, 2026

Founded and built a SaaS photo booth platform serving real users. Designed backend modules with domain-boundaries to isolate business logic and improve maintainability. Built scalable REST APIs using NestJS with MongoDB and Redis (caching and rate limiting), reducing repeated database reads by ~60%. Designed a synchronous AI media processing pipeline using message queue patterns. Decoupled API and rendering services to improve resilience under concurrent workloads. Provisioned and managed AWS infrastructure (EC2, ECR, S3, CloudFront, IAM) using Terraform and Docker deployments. Designed CDN-based asset delivery via CloudFront, reducing asset load time by ~40% while maintaining sub-200ms latency. Integrated Stripe for subscription billing and usage tracking. Delivered a trend-driven AI feature within 48 hours in response to seasonal demand, increasing short-term user engagement.

Full-Stack Developer at ChallenZ New Zealand

March 1, 2025 - May 31, 2025

Developed a short-form video application using React Native with real-time interaction features. Built an internal moderation and analytics dashboard using Next.js. Implemented secure authentication and role-based access control using Supabase. Collaborated with designers and backend engineers to deliver user-facing features and participated in code reviews and cross-team discussions to improve code quality and maintainability.

Full-Stack Developer (Contract) at Challenz

February 1, 2025 - May 1, 2025

Contributed to a short-form video application using React Native with real-time interaction features. Built moderation and analytics dashboards with Next.js, reducing manual user monitoring effort by ~20–25%. Implemented authentication and RBAC using Supabase in a serverless environment to strengthen access control.

Software Developer at Plogvn

April 1, 2024 - September 1, 2024

Developed responsive web applications using React and Next.js, increasing mobile engagement by 30%. Led features within a five-person agile team under senior supervision. Collaborated with designers and backend engineers to deliver user-facing features. Participated in code reviews and cross-team discussions to improve code quality and maintainability. Optimized the performance of a Three.js 3D showroom, achieving 40% higher framerate and 35% faster load times. Built reusable UI components, reducing development time by 15%.

Software Developer at Ploggvn

February 1, 2024 - September 1, 2024

Developed responsive web applications using React and Next.js, improving mobile engagement. Owned frontend architecture in a 5-person agile team working closely with a Canada-based product team. Standardized UI components and documentation, reducing UI bug reports by ~35% and resolving cross-team design conflicts. Optimized a Three.js-powered 3D showroom, increasing frame rate by ~40% and reducing load time by ~35%. Delivered interactive 3D show case projects (motorbike, drone, product demos) and built an internal analytics dashboard to track user behavior and product performance.