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3.4
3.4
100%
$35 USD / Hour
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Indonesia (8:53 AM)
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Joined on September 4, 2010
$35 USD / Hour
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Building software is not just about writing code. It's about designing systems that solve real business problems and continue to work as products grow. I'm a Software Engineer with 15+ years of experience designing, building, and maintaining web applications, backend systems, and AI-enabled products across commerce, healthcare, education, sports media, and transportation domains. My background spans system architecture, API development, database design, deployment, and long-term product maintenance. My core expertise is Ruby on Rails and backend engineering, with a strong focus on building reliable, maintainable, and scalable systems. In recent years, I've also been integrating AI capabilities into real-world applications, including multimodal experiences, semantic search, AI-assisted workflows, and LLM-powered features. I enjoy working on products from idea to production and collaborating closely with founders, product teams, and businesses to turn requirements into working software. What I can help you with: • Ruby on Rails application development • Backend architecture and system design • REST API development and integrations • PostgreSQL database design and optimization • AI-powered product features and LLM integrations • Semantic search and retrieval systems • Workflow automation and business systems • Commerce and SaaS platforms • Legacy Rails modernization and maintenance • Docker-based deployment workflows If you're looking for an engineer who can combine solid backend architecture with modern AI capabilities and product thinking, I'd be happy to discuss your project.
Verifications
On time
100%
On budget
100%
Accept rate
100%

Marketplace Website using Ruby on Rails

Marketplace Website using Ruby on Rails
It was a pleasure to work with Mohamed . He is a ruby professional developer . I do recommend him and would sure like to work with him again .
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Experience
Software Engineer
Apr, 2011 - Present
•
15 years, 2 months
self employed
Apr, 2011 - Present
•
15 years, 2 months
Designed and owned backend architecture and system design across multiple production applications. Built and delivered web applications, backend systems, and digital products spanning commerce, healthcare, education, sports media, transportation, and AI-enabled applications. Core areas: • Ruby on Rails application development • Backend architecture and API design • PostgreSQL database design and optimization • Commerce and SaaS platforms • AI-assisted workflows and product integrations
Apr, 2011 - Present
•
15 years, 2 months
Software Engineer
Jan, 2012 - Dec, 2015
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3 years, 11 months
tic-tools.com
Jan, 2012 - Dec, 2015
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3 years, 11 months
Led backend and frontend development, database architecture, and geospatial system integration. Implemented mapping and traffic analysis workflows using Ruby on Rails, and designed data models supporting scenario-based transportation planning. Key responsibilities: • Full-stack application development • Database architecture and data modeling • Google Maps JavaScript API integration • Deployment and infrastructure management using AWS
Jan, 2012 - Dec, 2015
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3 years, 11 months
Software Engineer
Jan, 2008 - Dec, 2011
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3 years, 11 months
wangoon
Jan, 2008 - Dec, 2011
•
3 years, 11 months
My scope of works is about developing Web and Software applications using Php, Java, and Javascript.
Jan, 2008 - Dec, 2011
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3 years, 11 months
Education
Bachelor Degree, Information System, STMIK AKAKOM Yogyakarta
2009 - 2011
•
2 years

Indonesia
2009 - 2011
•
2 years
Associate's degree, Informatics Management, STMIK AKAKOM Yogyakarta
2004 - 2008
•
4 years

Indonesia
2004 - 2008
•
4 years
Qualifications
Data Analysis with Python
2024
IBM
Data Analysis with Python certificate https://courses.cognitiveclass.ai/certificates/745f73bef4954e588c4eabff6e59cb68
2024
Python for Data Science
2024
IBM
Python for Data Science certificate: https://courses.cognitiveclass.ai/certificates/942d8452b15e429481532c6da21ec1bc
2024
Computational Thinking using Python
2021
Massachusetts Institute of Technology
- A Notion of computation - Python programming language - Algorithms - Algorithmic complexity - Testing and debugging - Data structures
2021
Certifications
F
Foundation vWorker Member