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Muhammad R.

Muhammad R.

Software Engineer | Mobile Engineer | Development, Testing & Release

I’m a Software Engineer specializing in mobile development, with experience building, testing, and releasing mobile and web applications. I work with startups and businesses to develop new products, improve existing applications, fix technical issues, and deliver features from development to production. My focus is writing clean, maintainable code and making sure applications work reliably in real-world use. 💡 What I can help with: • Mobile app development with Flutter, Kotlin, Swift, and React Native • Web application and dashboard development with React and Next.js • Backend API development with Node.js, TypeScript, and Golang • REST API, Firebase, MongoDB, and PostgreSQL integration • Third-party service and AI integration • Bug fixing and troubleshooting • Testing, debugging, and performance optimization • App deployment and release for Google Play Store and App Store • Feature development and maintenance for existing applications I can work with an existing codebase or start a project from scratch. I’m comfortable working from a clear specification, discussing technical requirements, or helping define the best approach when requirements are still evolving. 🛠️ My typical workflow: 1. Understand the requirements and existing system 2. Plan the implementation and technical approach 3. Develop and integrate the required features 4. Test and fix issues 5. Optimize the application 6. Prepare and manage the production release If you need a Software Engineer to build a mobile or web application, improve an existing product, or take a feature from development through release, feel free to reach out.

🇮🇩Purwokerto, Indonesia$15/hr100% JSSSince Mar 2026
GlobeUpwork

Earnings and projects

MRR
$1.1k

Last 6 months ÷ 2.3 months active (since Aug 2026)

World#43,235 / 412k
🇮🇩Country#362 / 5,726
Revenue, last 30 days
$1.2k

Last 6 months: $2.5k

World#35,814 / 412k
🇮🇩Country#317 / 5,726
Total earnings
$2.6k

Billed in all: $2.7k

World#311,665 / 412k
🇮🇩Country#3,895 / 5,726
Per project
$2.6k

$2.5k in the last 6 months

World#63,213 / 412k
🇮🇩Country#484 / 5,726
Projects, last 6 months
1
0% fixed100% hourly
World#128,095 / 412k
🇮🇩Country#2,284 / 5,726
Projects in all
1
0% fixed100% hourly
World#360,674 / 412k
🇮🇩Country#5,146 / 5,726

Earnings, last 30 days

$2.7k+$1.2k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$1k$2k$3kOct 9Oct 24Nov 8

Skill rankings: Top 9% in MySQL

Ranked by MRR among everyone on Upwork with the skill.

  1. #40Clean Architecture385 freelancers · 🇮🇩 #2Top 10%
  2. #106Minimum Viable Product546 freelancers · 🇮🇩 #1Top 19%
  3. #217Golang2,195 freelancers · 🇮🇩 #16Top 10%
  4. #219Startup Consulting1,584 freelancers · 🇮🇩 #1Top 14%
  5. #221Software Architecture & Design1,465 freelancers · 🇮🇩 #2Top 15%
  6. #230Dart2,324 freelancers · 🇮🇩 #4Top 10%
  7. #376Google Cloud Platform2,939 freelancers · 🇮🇩 #7Top 13%
  8. #747FastAPI4,337 freelancers · 🇮🇩 #5Top 17%