Freelancer profile translated to English.
Back to original languageAbout Faiz
I spent over 3 years at Amazon (AWS) designing internal tools for developers, including a CI/CD infrastructure used over 10,000 times by more than 50 developers. I also worked on critical performance optimizations, reducing graph loading time by 25x and execution times by 60x, as well as AI agents for mainframe modernization programs, automating code transformation and testing on COBOL to Java migrations.
Before that, I worked on reliability infrastructure at Uber, where I led switchover monitoring and reduced failover time from 15 minutes to 2 minutes.
I am comfortable with complex and ill-defined problems: slow systems, infrastructure that hasn't kept up with growth, codebases with years of technical debt. I work autonomously, communicate directly with stakeholders, and require no engineering or infrastructure mentorship.
French
Native or bilingual
English
Native or bilingual
Arabic
Native or bilingual
Can work on-site
Paris (up to 10km)
Experience
- QastenCEO and Co-founderSOFTWARE PUBLISHINGSeptember 2025 - June 2026 (9 months)Paris, France
- Created a B2B AI product from scratch, with responsibility for the product, technology, users, and commercial preparation.
- Identified a concrete problem in enterprise AI usage: conversations are scattered, context is lost, and teams poorly reuse existing work.
- Defined product priorities based on user feedback, field observations, and analysis of existing tools.
- Built a collaborative workspace to enable teams to work with AI, retain useful information, and capitalize on previous exchanges.
- Arbitrated technical and product choices with strong constraints on speed, user experience quality, and ease of use.
- Prepared the business model: target customer, pricing, initial use cases, sales arguments, and needs to cover for businesses.
- Considered B2B constraints from the design phase: security, confidentiality, access control, traceability, administration, and future integrations.
- AWS - Amazon Web ServicesSoftware engineerTELECOMMUNICATIONSSeptember 2022 - December 2025 (3 years and 3 months)Paris, France
- Optimizations: reduced loading time for a dependency graph of +1M nodes from 40 minutes to 1.5 minutes (×25). Improved large graph manipulations from 2 hours to 2 minutes (×60). Reduced download space by a factor of (x70).
- Migrated from Java 8 to Java 17 and from Spring Boot 2 to Spring Boot 3, on a 5-month project, ensuring a smooth transition for about thirty impacted developers.
- Implemented a SemVer compliant versioning system and automated CI/CD pipelines, used over 10,000 times since, on AWS.
- Designed and implemented a more transparent and secure software product distribution system for clients.
- Implemented GenAI features to assist in the COBOL to Java migration.
- As Security Guardian, actively participated in the majority of the organization's security reviews.
- etc.
- SIVAN
On Malt
AWS expertTECHMay 2025 - May 2025Paris, France– Analyzed metrics across multiple AWS services to identify the root cause of a latency issue.– Identified the root cause and implemented a targeted migration to permanently resolve the incident.– Developed a monitoring posture improvement plan to enhance proactive detection and long-term resilience.
Reviews
Recommendations
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Master in Computer and Data scienceEURECOM2021- Machine learning and deep learning - Cloud & distributed systems - Operating systems architecture - Systems (web, cloud, mobile) security - Database management systems implementation - Image processing and coding - 3D and virtual imaging
- EngineerIMT Atlantique2021