Mohamed is available for hire
Hire MohamedMohamed Fakhreddine
Verified Expert in Engineering
Software Developer
San Diego, CA, United States
Toptal member since September 18, 2015
Bio
Mohamed is a senior full-stack developer with 10 years of experience at companies like Microsoft, Amazon, Google, and Facebook. His experience spans a wide range of technologies, from Angular 2 to Java and .NET. He is a team player and passionate about dynamic web applications built on REST services.
Portfolio
Microsoft
TypeScript, Site Reliability Engineering (SRE), Azure
Microsoft
JavaScript, C#.NET
Amazon
Linux, MySQL, Java
Experience
- Java - 5 years
- Agile Software Development - 4 years
- JavaScript - 3 years
- SQL - 3 years
- REST - 2 years
- C# - 2 years
- TypeScript - 1 year
- Angular - 1 year
Availability
Part-time
Preferred Environment
TypeScript, AngularJS, .NET
The most amazing...
...project I've contributed to is EC2. I kept the mission-critical SQL databases with millions of rows always available with low latency and fast fail-over.
Work Experience
Principal Software Engineer
2022 - PRESENT
Microsoft
- Oversaw the reliability strategy during launch of the Microsoft Loop application and scaling from zero to millions of customers.
- Managed on-call site reliability response teams and strategy for Loop across multiple applications and platforms.
- Upgraded the team release pipeline to use safe deployment practices in a region-based rollout with health checks between stages.
Technologies: TypeScript, Site Reliability Engineering (SRE), Azure
Software Engineer
2014 - 2016
Microsoft
- Maintained the Microsoft Azure accounts management and billing website's front-end and back-end (C#.NET, JavaScript).
- Detected and diagnosed issues in production using service-monitoring probes.
- Maintained the back-end service APIs.
- Resolved customer escalations quickly.
- Supported an email web portal using C#.
- Prevented regressions with WebDriver UI tests as well as functional, unit, and end-to-end tests.
Technologies: JavaScript, C#.NET
Software Engineer
2013 - 2014
Amazon
- Supported a web service using Java.
- Provisioned new servers and databases.
- Set up database slaving and replication.
- Cleaned and scrubbed corrupted data.
- Resolved service issues quickly.
Technologies: Linux, MySQL, Java
Software Engineer Intern
2012 - 2012
- Improved the Google App Engine framework for creating REST APIs.
- Improved OAuth authentication in the framework.
- Used mocks to create robust unit tests.
- Created a sample RESTful service using an improved framework.
- Create technical documentation to help onboard teams to the framework and leverage the new improvements.
Technologies: Google App Engine, Google Web Toolkit, Eclipse, Java
Software Engineer Intern
2011 - 2011
- Added support for RTL text on LTR pages and vice versa using JavaScript handlers on all inputs.
- Fixed RTL and LTR text display across the site.
- Developed UI for an ad campaign in conjunction with Microsoft.
Technologies: JavaScript, PHP
Software Engineer Intern
2010 - 2010
- Created a new Google App Engine application that updated Google Calendar through the REST-based Google Data API.
- Developed an admin front-end panel using Google Web Toolkit (GWT).
Technologies: Google App Engine, Google Web Toolkit, Eclipse, Java
Software Engineer
2008 - 2010
Pervasive
- Maintained a C++ client for the Microsoft Dynamics SOAP API.
- Reviewed, certified, and productized outsourced Java projects.
- Developed a Java client for the QuickBooks COM API.
- Debugged Java and C++ programs in Eclipse and Visual Studio 6.
- Ported Java and C++ code from 32-bit Windows to 64-bit Windows and Linux.
Technologies: SOAP, C++, Java
Software Engineer
2007 - 2008
Logical Information Machines
- Wrote programs to download vendor data files via FTP and HTML.
- Wrote programs to parse raw text files into Oracle SQL database tables.
- Provided technical specifications, performed system testing, and deployed a three-tier J2EE application running on Apache Tomcat with underlying Derby database.
- Helped outsource Java projects by providing technical specifications, integrating deliverables into the repository, and performing integration testing.
Technologies: SQL, Java
Software Engineer
2005 - 2007
FactSet Research Systems
- Developed new application features in C++ while maintaining legacy code on VMS servers.
- Interfaced with product development to translate business needs into functional specs.
Technologies: Perforce, C++
IT Specialist
2003 - 2004
The University of Texas at Austin
- Digitized the workflow for a professor and his team of graduate student researchers.
- Developed a LAMP stack application with authentication for uploading and downloading files and assigning work.
- Designed and implemented a relational database to store research information.
- Installed a Perl XML-parser and wrote scripts utilizing regular-expression string matching to perform searches on local files through a web interface.
Technologies: PHP, MySQL, Apache, Linux
Experience
Microsoft Office 365 Message Encryption
I enhanced and maintained a web service back-end and its corresponding front-end portal in C# .NET for viewing and replying to email messages. I also created a new iOS client and drove it through all stages of development from design to monitoring and maintenance. Throughout the entire process, I was attentive to customer issues and resolved escalations in a timely manner.
Amazon Elastic Cloud (EC2)
I worked on the Amazon Elastic Cloud and kept mission-critical SQL databases with millions of rows always available with low latency and fast fail-over.
Facebook Right-to-Left Language Support
I added a feature to Facebook where input fields and labels across the site would have better support for right-to-left languages by dynamically adjusting direction of the UI controls.
Company Directory Search
I designed and implemented a multi-faceted company directory search service in Angular 2 and Bootstrap running on Node.js hosted by Amazon Web Services (AWS) Elastic Beanstalk and backed by a MySQL database hosted by AWS Relational Database Services (RDS).
Education
2010 - 2012
Master's Degree in Computer Science
University of Texas - Austin
2001 - 2005
Bachelor's Degree in Computer Science
University of Texas - Austin
Skills
Libraries/APIs
jQuery
Tools
Git, Perforce, Apache, MySQL Workbench
Languages
C#.NET, Java, C#, TypeScript, SQL, C++, JavaScript, PHP
Frameworks
Bootstrap, Angular, ASP.NET, Google Web Toolkit, .NET, AngularJS
Paradigms
Agile Software Development, REST
Platforms
AWS Lambda, Eclipse, Google App Engine, Windows, Linux, AWS Elastic Beanstalk, Azure
Storage
MySQL, Amazon S3 (AWS S3)
Other
SOAP, Site Reliability Engineering (SRE)
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