Houssem Eddine Zerrad
Staff Software Engineer | Cloud Architect
MSc. Computer Science Spc. Artificial Intelligence
Work Experience
Ordaos Bio - New York, United States - Remote
Staff Software Engineer
October 2024 - Present
- Owned the architecture and evolution of core backend and data-platform systems (service boundaries, API contracts, data models, and production reliability) supporting computational and lab workflows.
- Redesigned ingestion and retrieval paths, improving end-to-end data ingestion/retrieval performance by ~70%.
- Defined and rolled out shared platform conventions across services, improving stability and making production issues faster to diagnose.
- Collaborated with DevOps, ML, and product-facing teams on roadmaps and system contracts, reducing integration friction and enabling safer, faster iteration across the wider system.
Master Technology Company - Algeria - On-Site
Lead Software Engineer
July 2023 - October 2024
- Defined and rolled out engineering operating standards to improve delivery throughput and reduce rework.
- Tech-led a multi-developer delivery from planning through production rollout, coordinating scope, sequencing, and quality gates to ship on schedule.
- Designed a cloud-native, serverless-first architecture to scale predictably while controlling operational cost.
- Introduced coding standards and review checklists, reducing code review cycle time by ~15% while improving consistency and maintainability.
Senior Software Engineer - Full-Time
October 2020 - July 2023
- Designed and developed a highly-available, fault-tolerant web application using modern cloud technologies
- Developed a secure authentication system with two-factor authentication and user identity management
- Architected and led the migration from a monolithic Elixir backend to a microservices architecture, boosting load capacity by 200%.
- Built a distributed system that increased throughput by 120%
- Implemented an event-based microservices architecture that improved system modularity and reduced dependencies between components
- Implemented a Continuous Integration/Continuous Deployment (CI/CD) pipeline that reduced time-to-deployment from 1 day to ~40 minutes
Fortune.app - Montreal, Canada - Remote
Founding Engineer - Contract
October 2023 - April 2024
- Led the backend migration from JavaScript to TypeScript, improving code maintainability and reducing production error reports by 64%.
- Designed and implemented key features, including multi-tier subscription logic and real-time currency exchange, enhancing user satisfaction and retention, and reducing churn by 71%
- Developed automated scripts to simplify common tasks and reduce manual effort
- Conducted code reviews to improve code quality and ensure adherence to best practices
- Developed REST APIs and implemented authentication protocols, such as OAuth, to securely expose data to clients
IntegrationOS - Ontario, Canada - Remote
Senior Software Engineer - Contract
July 2022 - July 2023
- Led critical research and analysis, driving innovation in IntegrationOS's integrations.
- Pioneered the development of scalable streams, queues, and workflows capable of handling billions of events, increasing system efficiency.
- Established a clear contracts for developing source integrations and target integrations, improving the ability to add new integrations by 300%
- Developed over 10 source integrations and 6 target integrations, including GitHub and Shopify, contributing to a 75% increase in customer acquisition.
- Recognized as the top contributor to IntegrationOS's open-source Core repository.
FelixSmart Inc. - Calgary, Canada - Remote
Software Engineer - Contract
March 2020 - October 2020
- Played a critical role in debugging and reconstructing the smart aquarium firmware,restoring system functionality and reducing customer churn.
- Performed deep optimization of the smart aquarium firmware, reducing errors by 90%
- Established real-time connectivity between the aquarium system and the Firebase backend, reducing costs by 22% and enhancing system feedback.
Testimonials
“ A fantastic job done by Houssem, as always! ”
Daniel Spataro
CEO at IntegrationOS
“ Houssem is a great developer and a great person to work with. He showed himself like a real professional. He helped us to understand those nuances [in our system] and find a way to handle them. ”
Tom Goedhart
Co-Founder at Barbaard Management
“ He is a professional engineer with a great deal of experience and a will to jump into fixing any problem. ”
Lucas Gozalvez
CTO at FelixSmart Inc.
“ His technical skills and attention to detail were impressive. What stood out even more was his exceptional communication throughout the project. ”
Nina Rezec
Founder at Global Consultancy UAE