Available for opportunities

Haris
Pratama

Fullstack Developer — Javascript · Typescript · Golang

I build scalable web applications and SaaS products with modern technologies. Clean code, efficient systems, real-world impact.

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5+
Years Exp.
12+
Projects
5+
Tech Stack
scroll to explore
About

Building things
that matter

Fullstack Developer with 5+ years of experience building scalable web applications and SaaS platforms. I specialize in the JavaScript ecosystem and love crafting products that solve real-world problems.

My experience spans from frontend interfaces with React & Angular to robust backend services with Node.js, NestJS, and Golang — all the way to cloud infrastructure and deployment pipelines.

I've worked on production-grade SaaS systems handling thousands of users, internal tooling at fintech companies, and end-to-end product development for business clients. I care deeply about performance, maintainability, and developer experience.

When I'm not coding, I write about system design, share development tips, and explore new patterns in distributed architecture.

5+
Years of professional experience
10+
Technologies in production
3
Full SaaS products shipped
∞
Passion for clean architecture
Skills

Tech stack

⬡ Frontend
React / Next.js
Angular
Tailwind CSS
Redux / Zustand
TypeScript
⬡ Backend
Node.js / Express
NestJS
Golang
REST API / GraphQL
Microservices
⬡ Database
PostgreSQL
MongoDB
Redis
MySQL
Prisma / TypeORM
⬡ DevOps
Docker / K8s
AWS (EC2, S3, RDS)
CI/CD Pipelines
Linux / Nginx
GitHub Actions
Work

Featured projects

01
Production · XL Satu
Home WiFi (fiber optic/4G)
XL SATU is an integrated internet service (fixed-mobile convergence) from XLSmart that combines unlimited home WiFi (fiber optic/4G) with a family mobile phone quota in one bill and one application.
NextJS PostgreSQL Go Docker AWS
Production Live
02
Production · NewXLif XLSmart
Human Resource Information System (HRIS)
NewXlife is a web-based recruitment platform developed to support HR teams in managing and streamlining the candidate hiring process. The system enables recruiters to organize candidate data, monitor recruitment progress, and improve overall hiring efficiency.
Angular Go PostgreSQL
Production Live
03
WorkForge · SaaS
Multi-Tenant HR & Recruitment SaaS Platform
A multi-tenant SaaS application that enables outsourcing companies to manage recruitment pipelines, employee data, and client assignments. The platform includes role-based access control, tenant-based data isolation, and a structured hiring workflow from candidate application to employee onboarding.
Golang PostgreSQL Next.js Docker
Live Demo GitHub →
Career

Work experience

2023 — Present
Axiata Digital Labs
Fullstack Developer
  • Delivered features impacting thousands of active users across multiple regions
  • Developed and maintained scalable web applications for telecom digital platforms
  • Improved application performance by optimizing frontend rendering and API integration, reducing load time, and enhancing user experience
  • Collaborated closely with cross-functional teams (backend, QA, DevOps, product) to deliver high-quality features within tight deadlines
NextReact NativeAngularGoAWSPostgreSQLDocker
2022 — 2023
Rebelworks
Frontend Developer
  • Accelerated feature delivery by 30%, enabling faster time-to-market for enterprise clients, by modularizing components, improving reusable UI pattern
  • Supported production deployments and resolved critical issues to ensure system stability and reliability
React NativeReactFirebase
2021 — 2022
GRADANA
Fullstack Developer
  • Improved API response handling and error management, reducing production bugs by 20%
  • Contributed to CI/CD improvements that accelerated release cycles and minimized deployment issues
  • Reduced page load time by 30% through frontend performance optimization and efficient state management
Nest.jsAngularPostgreeSQLDocker
2021 — 2021
Permata Indonesia
Fullstack Developer
  • Developed and maintained scalable mobile applications for HR digital platforms.
  • Collaborated in Agile teams to deliver high-impact features
  • Ensured production stability through debugging and continuous improvements.
Node.jsReact NativePostgreeSQLExpress
Impact

Key achievements

⚡
40% Performance Boost
Improved PDF generation and web performance through async processing, caching layers, and code optimization at Xendit.
📄
Receipt Export System
Built export infrastructure handling thousands of receipts daily with zero downtime and full audit trail.
🏗️
SaaS Architecture Design
Designed and shipped scalable multi-tenant SaaS architecture from scratch supporting concurrent business operations.
🔄
Production Migration
Led zero-downtime migration of legacy monolith to microservices without disrupting live production traffic.
🚀
60% Manual Work Reduced
Automated production scheduling workflows, cutting coordination overhead and improving team throughput significantly.
☁️
Cloud-Native Deployments
Established Docker-based CI/CD pipelines with AWS, reducing deploy time from hours to minutes.
Offerings

What I can
build for you

01
SaaS Applications
End-to-end SaaS product development with multi-tenancy, subscription logic, dashboards, and scalable infrastructure.
02
REST API Development
Production-grade APIs with authentication, rate limiting, documentation, and performance-optimized query design.
03
Fullstack Web Apps
Complete web applications from database to pixel-perfect UI, built for scale, maintainability, and great UX.
04
System Architecture
Technical consulting on system design, microservices patterns, cloud architecture, and performance optimization.
Connect

Let's work
together

Whether you're looking for a fullstack developer to join your team, need a technical partner for your SaaS project, or want to build something from scratch — I'd love to hear from you.

✉
Email
hpratama324@gmail.com
◈
GitHub
github.com/HarisPratama
⊞
LinkedIn
linkedin.com/in/haris-pratama-aa041b192
◉
WhatsApp
+62 817 0330 1997
Send a message