Financial Systems
Card management, corporate card applications and banking platforms.
FINTECH · PRODUCTION APPLICATION SUPPORT
Hello, I'm Louay Khaddaj.
I help keep financial technology running reliably.
I work across mission-critical card management systems, banking applications, production operations, APIs, databases, and technical implementation.
FintechCard & banking systems
ProductionReliability & operations
EngineeringAPIs, data & automation
BASED INRiyadh, Saudi Arabia
01 / ABOUT
Where technology meets reliability.
I'm a fintech and production application support professional with experience across card management systems, banking applications, production operations, and technical implementation.
My work combines technical troubleshooting, production reliability, databases, APIs, and collaboration across development, infrastructure, operations, and business teams.
Production Reliability
Monitoring, incident investigation, releases, batch processing and disaster recovery.
Integration
REST APIs, middleware, microservices and backend systems.
Data & Automation
SQL, PostgreSQL, Oracle, PL/SQL, Python and shell-based workflows.
02 / CAREER
Experience
A career shaped by production systems, fintech platforms, backend technology and technical problem-solving.
Supporting production card management systems through on-call monitoring, incident investigation, operational maintenance and controlled changes.
- Investigate and recover failed end-of-day and batch-processing operations.
- Execute or assist with production deployments, application updates and post-release validation.
- Participate in disaster-recovery migration and failback activities.
- Investigate card transactions and integration issues across application and database layers.
- Perform certificate updates and service maintenance; develop or improve scripts and operational procedures.
Worked across backend systems, card platform implementations, migrations, APIs, PostgreSQL, microservices, automation, and Level 2 technical support.
Contributed to an e-commerce application using React, HTML/CSS, Bootstrap, Python, and Django.
03 / HOW I WORK
From alert to resolution.
A practical view of how I approach production incidents in card management environments—from initial reports to service validation.
STAGE 01 / DETECT
Start with the signal.
Monitor application behavior and production alerts, respond to command-center calls during on-call rotations, and review reported incidents through support channels.
04 / HANDS-ON EXPERIENCE
Production operations.
Six areas of hands-on work supporting production financial systems. Select a card to explore the responsibilities behind it.
Analyze production alerts, application and middleware logs, database behavior and API responses to investigate affected services.
Review processing logs, identify failed stages, examine relevant scripts and monitor recovery of end-of-day operations.
Execute or assist with approved application and database updates, backup and recovery preparation, service maintenance and post-deployment checks.
Support disaster-recovery migration or failback, operational readiness and service validation using approved procedures.
Trace application behavior, API responses and database records to isolate transaction-processing and integration problems.
Develop or improve scripts and operational procedures, perform certificate updates and support routine application maintenance.
05 / SELECTED WORK
Technical work, in context.
Examples of the operational problems and activities I've worked on. Details are intentionally generalized to protect production environments and client confidentiality.
Investigating end-of-day processing issues
Examining processing logs, identifying failed stages and reviewing related scripts to support batch recovery and monitor subsequent execution.
Production deployment & validation
Supporting controlled releases through backup readiness, approved application and database changes, service checks and post-deployment validation.
Disaster recovery & failback
Participating in migration and failback activities, following operational procedures and supporting service-continuity checks.
These summaries describe areas of hands-on experience, not public documentation of individual client incidents.
06 / EXPERTISE
Technical ecosystem
Tools and technologies I use across production support, financial systems, integration and software environments.
Databases
SQL · PostgreSQL · Oracle · PL/SQL
Applications & Middleware
IBM WebSphere · WSO2 · Microservices
Programming
Python · Java · JavaScript · Shell/Linux
APIs & Testing
Postman · Swagger · REST APIs
Operations
Dynatrace · Incident Management · Production Monitoring · Disaster Recovery
Banking Systems
Cortex · WAY4 · Verto · Corporate Card Platforms
07 / BACKGROUND
Education & continuous learning
Computer science foundations complemented by postgraduate study in artificial intelligence and machine learning.
2025 — 2026
POST GRADUATE PROGRAM
Artificial Intelligence & Machine Learning
The University of Texas at Austin
B.Sc.
COMPUTER SCIENCE
Bachelor of Science in Computer Science
American University of Science and Technology
08 / CONTACT
Let's connect.
Interested in connecting professionally or discussing technology, fintech, and production systems? Choose the channel that works best for you.