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Available for new workJakarta, Indonesia

Fullstack Engineer / Software Engineer

Muhamad Reza Muktasib

I build calm, reliable systems behind ambitious products.

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5+
Years shipping software
24+
Warehouses at enterprise scale
4.1K+
Daily active users served
10+
Fullstack projects delivered
Portrait of Muhamad Reza Muktasib
Reza MuktasibFullstack Engineer
About

Quiet systems, built to last.

A little about the person behind the architecture diagrams.

I am a backend-focused engineer who cares as much about how a system feels to operate as how it performs under load. My work lives where reliability meets calm: warehouse platforms syncing tens of thousands of transactions a month, healthcare APIs that cannot afford to stumble, and real-time proctoring streams that must stay honest.

I studied Informatics Engineering at Politeknik Elektronika Negeri Surabaya, graduating with a 3.94 GPA, and spent an exchange year at Hanyang University in South Korea as an IISMA awardee. Along the way I learned that the best architectures are quiet ones, hexagonal, event-driven, and easy for the next person to reason about.

Today I design secure backend services and integrations across ERP, SAP, payments, and insurance ecosystems, and I still enjoy crafting the frontend that makes all of it feel effortless.

Based in
Jakarta, Indonesia
Focus
Backend, Systems, Real-time
Education
PENS - Informatics (3.94 GPA)
Exchange
Hanyang University, South Korea
Experience

A path across teams and systems.

From high-volume warehouse platforms to healthcare APIs and remote product teams.

  1. Aug 2025 - PresentJakarta, IndonesiaContract - via PT Sobat Kreasi Nusantara

    Backend Engineer

    PT. Paragon Technology and Innovation

    Developing and scaling an enterprise Warehouse Management System integrated with ERP and SAP ecosystems.

    • Implemented Batch Management across 24+ active warehouses, improving inventory traceability and operational consistency.
    • Built backend services and integration modules for real-time synchronization of warehouse operations, logistics workflows, and product batch data.
    • Supported high-volume operations handling tens of thousands of monthly transactions with a focus on reliability and scalability.
    • Collaborated with frontend and cross-functional teams to deliver production-grade features in Agile environments.
    Node.jsTypeScriptSAPERPPostgreSQL
  2. Aug 2025 - PresentSouth Jakarta (Sudirman), IndonesiaContract

    Fullstack Engineer

    PT. Sobat Kreasi Nusantara (SOBATBISNIS)

    Delivering enterprise web applications across backend services, API integrations, and frontend features.

    • Built scalable backend systems using Java and microservice REST APIs for healthcare, insurance, and internal business platforms.
    • Contributed to Biomedilab healthcare systems by optimizing API performance and improving database efficiency.
    • Implemented secure service integrations for Sompo Insurance and the Midtrans payment gateway.
    • Worked across diverse client requirements, ensuring high-quality, maintainable fullstack solutions.
    JavaSpringMicroservicesREST APIMidtrans
  3. Jun 2024 - Dec 2025Surabaya, IndonesiaFull-time

    Fullstack Developer

    Exzam.id

    Developed a multi-tenant online examination platform for schools and universities.

    • Built frontend features in React and backend services in Laravel for authentication, exam workflows, and subscription management.
    • Designed reusable UI components to accelerate feature development and improve interface consistency.
    • Optimized API performance and database queries to improve reliability and concurrent user handling.
    • Integrated automated proctoring and the Midtrans payment gateway for secure exam monitoring and subscriptions.
    ReactLaravelMySQLMidtrans
  4. Feb 2025 - Aug 2025South KoreaRemote

    Backend Engineer & DevOps

    Mufko App

    Maintained backend services for a production application serving 4,100+ daily active users.

    • Optimized API response times and database performance to improve reliability and scalability.
    • Managed AWS infrastructure, deployment workflows, and Docker-based environments for continuous delivery.
    • Monitored backend services to ensure consistent uptime and production stability.
    LaravelAWSDockerCI/CD
  5. Dec 2022 - PresentSurabaya, IndonesiaFreelance

    Freelance Web Developer

    Cipta Kode

    Delivered 10+ fullstack web projects across a range of business domains.

    • Built responsive frontend interfaces and scalable backend APIs tailored to client requirements.
    • Worked directly with clients to translate business needs into production-ready applications and automation.
    ReactLaravelPythonCloud
  6. Dec 2023 - Feb 2024Sidoarjo, IndonesiaInternship

    Intern Web Developer

    PT. Digital Solusi Master

    Maintained and enhanced Diakademik, an educational platform used by 2,000+ students and staff.

    • Converted Figma designs into responsive interfaces using Tailwind CSS and modern web technologies.
    • Refactored legacy codebases to improve maintainability, performance, and development efficiency.
    Tailwind CSSPHPJavaScript
Selected Work

Case studies in reliability.

Two products where careful architecture met real-world scale.

Open-source automated proctoringProcspy
TypeScriptExpressMongoDBWebRTC
Jun 2024 - Present

Procspy

An open-source proctoring platform that upholds academic integrity during online assessments through real-time monitoring, built on a scalable hexagonal architecture.

  • Tested to handle 30 concurrent users with only 20% CPU usage on a dual-core machine.
  • Led the design and open-sourcing of the WebRTC component, delivered as a Chrome Extension.
  • Built the media server on WebSockets and Mediasoup for efficient real-time streaming.
  • Designed a custom socket protocol connecting the extension to the Next.js dashboard.
TypeScriptExpressMongoDBWebRTCMediasoupNext.js
Documentation
Multi-tenant online exam platformExzam.id
ReactLaravelMySQLMidtrans
Jun 2024 - Present

Exzam.id

A multi-tenancy online examination platform for institutions, pairing a custom internal component library with a resilient Laravel backend.

  • Built a custom internal UI component library that reduced development time by 40%.
  • Managed multi-tenant exam workflows, authentication, and subscription logic in Laravel.
  • Integrated Procspy as the automated proctoring engine for secure monitoring.
  • Achieved stable performance for up to 120 concurrent users with optimized queries.
ReactLaravelMySQLMidtransMulti-tenancy
Visit exzam.id
Toolkit

The stack I reach for.

Backend-first, cloud-native, and comfortable across the whole product surface.

01

Languages

JavaScriptTypeScriptJavaPythonPHPGolang
02

Backend

Node.jsExpress.jsLaravelSpringGraphQLWebSocketsMicroservicesREST API
03

Frontend

ReactNext.jsTailwind CSSAngular
04

Infrastructure & DevOps

AWSGCPDockerCI/CDNginxApache
05

Databases

PostgreSQLMySQLMongoDBFirebaseRedis
06

Architecture & Practices

API DesignSystem DesignHexagonal ArchitectureEvent-Driven ArchitectureAgile / ScrumSecure Development
*

Languages

IndonesianNative
EnglishAdvanced · TOEIC 840
KoreanBasic · Survival
Credentials

Certified, and occasionally celebrated.

Continuous learning paired with a few milestones along the way.

Certifications

  • Next.js (JS/TS) CourseUdemy
    2025
  • Golang CourseUdemy
    2025
  • Docker & KubernetesUdemy
    2025
  • Junior Web Developer CertificationBNSP
    2023
  • JavaScript FundamentalDicoding
    2023
  • SQL FundamentalDicoding
    2023
  • Project ManagementDicoding
    2023
  • Programming Basic with CDicoding
    2023

Awards & achievements

  • IISMA Awardee 2024Hanyang University, South Korea
    National
  • Silver Medal - IYSAAWSEEC 2023
    International
  • 1st Place - Business Plan CompetitionFasilkomfest 2023, UPN Jawa Timur
    National
  • 2nd Place - IE FAIR 17thInstitut Teknologi Sepuluh Nopember
    National
  • 3rd Place - UI/UX CompetitionFasilkomfest 2023, UPN Jawa Timur
    National
  • 3rd Place - Cerdas Cermat KebangsaanSMA Awards, Jawa Pos
    Regional
Contact

Let's build something calm and reliable together.

Open to backend, fullstack, and systems-focused roles. I usually reply within a day.

[email protected]