Hossam Hammady
Co-Founder And VP Of Engineering at Rayyan Systems Inc.
Mississauga, Ontario, Canada
Summary
👤
Senior🎓
Top SchoolHossam Hammady is a seasoned software leader and co-founder with 15 years of experience building and scaling data-driven web applications and research tools. As Co-Founder and VP of Engineering at Rayyan, he leads development of an AI-assisted systematic review platform used by researchers in over 180 countries, blending product vision with hands-on engineering. Previously he productized research at QCRI, leading teams that turned prototypes into production-grade systems across data curation, traffic analytics, and truth-discovery benchmarking. A prolific open-source contributor and maintainer, he’s authored Ruby gems, Node packages and Heroku buildpacks and improved notable projects like Sunspot and the quran.com API with Docker and Elasticsearch integrations. Comfortable across DevOps and cloud-native stacks—Kubernetes, Docker, Ruby, Python and Node.js—he pairs architectural rigor with a willingness to “get his hands dirty” in code and build reproducible deployments.
14 years of coding experience
15 years of employment as a software developer
Bachelor Computer Engineering, Bachelor Computer Engineering at Alexandria UniversityMasters Computer Engineering, Masters Computer Engineering at Arab Academy for Science, Technology and Maritime Transport
English, Arabic
Github Skills (17)
env10
ruby-rails10
docker10
testing10
amazon-elasticsearch10
rails10
solr10
dockers10
ruby10
elasticsearchquery10
aws-elasticsearch10
elasticsearch10
devops10
environ10
elasticsearch-api10
Programming languages (21)
Github contributions (5)
quran/quran.com-api
Oct 2017 - Dec 2017
Quran.com content APIs
Role in this project:
Backend & DevOps Engineer
Backend & DevOps EngineerContributions:18 commits, 2 PRs, 13 comments in 2 months
Contributions summary:Hossam's contributions focused on configuring the backend environment, including database and Elasticsearch integration. They modified the application's configuration files, such as `elasticsearch.rb` and `puma.rb`, to work with environment variables and Docker. Furthermore, the user updated the schema and implemented a build process using Docker, along with modifications to the Docker-compose files to improve deployment. They also refactored the sitemap generation process.
apiquran
sunspot/sunspot
Sep 2014 - Mar 2015
Solr-powered search for Ruby objects
Role in this project:Back-end Developer
Back-end DeveloperContributions:7 commits, 5 comments, 1 issue in 6 months
Contributions summary:Hossam primarily focused on enhancing the Sunspot search library, specifically integrating soft commit functionality for Solr 4. They modified core Ruby files, including `sunspot.rb`, `sunspot/session.rb`, and `sunspot/mocks/connection.rb`, to support soft commits, which improve indexing performance. Furthermore, they updated the test suite (`sunspot/spec/api/session_spec.rb`) to properly test the new commit options and behaviors. The user also addressed compatibility with older Ruby versions.
searchrubysolrsolr-search-enginesunspot
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