Hi, I'm César Sáenz
TealDev is my
About Me
I am an innovative, proactive, passionate and dedicated software developer with a strong background in web development, mobile applications, and software engineering. I have experience working with various programming languages and frameworks, and turning every challenge into a growth opportunity.
César David Sáenz Salazar
Systems Engineer5
Mobile Projects
3
Desktop Projects
5
Web Projects
Professional Background
Technical Proficiency
Resume
Detailed overview of my professional background and experience.
Professional Journey
Systems Engineer
AutoZone BTSSC
April, 2022 - Present- Cloud Migration & Modernization: Spearheaded the legacy modernization of the core settlement application, refactoring legacy C code to Java and migrating infrastructure from on-premises servers to Google Cloud Platform (GCP).
- Payment Integration & Server Migration: Engineered payment server migrations and integrated Apple Pay and Google Pay for e-commerce transactions, enhancing checkout flexibility and transaction processing.
- Observability & System Health: Implemented Dynatrace across payment systems to establish real-time performance monitoring, proactive incident detection, and improved system reliability.
- Career Progression: Accelerated from Associate Systems Engineer to Systems Engineer within one year based on project delivery, technical execution, and team impact.
Freelance Developer
TealDev
November, 2020 - PresentProvided freelance development services for various clients, delivering custom solutions and maintaining existing applications.
Software Engineer
TGC
July, 2021 - April, 2022Engineered web applications and performed database analysis using Java and SQL, focusing on building scalable backend functionality and optimizing query performance. Maintained software platforms, and systematically resolved bugs to ensure data integrity and continuous system enhancement.
Developer
ABG
September, 2020 - July, 2021Managed end-to-end PHP web development initiatives by conducting technical analysis, driving key architectural decisions, and overseeing project execution. Handled relational database management using SQL and integrated third-party external APIs to expand application capabilities, ensuring seamless data synchronization, system efficiency, and reliable project delivery.
Academic Background
Professor
Instituto Tecnológico de Chihuahua II
Teaching courses in programming, software development, and computer science fundamentals to undergraduate students, fostering practical skills and theoretical knowledge.
Highlights
Master of Artificial Intelligence
Universidad Internacional de La Rioja (UNIR)
Master's degree focused on advanced Artificial Intelligence, Cognitive Systems, and enterprise data design. Coursework and research emphasized Machine Learning & Automated Reasoning, Cognitive Computing & Perception, and scalable Data Architecture, bridging theoretical AI concepts with high-performance software engineering.
Certifications
Bachelor of Computer Systems Engineering
Instituto Tecnológico de Chihuahua II
Bachelor's degree in Computer Systems Engineering with mobile app specialization.
Highlights
Freelance
Delivering end-to-end custom software solutions across web, mobile, and desktop platforms. Specializing in full-stack web applications, business management tools, and mobile apps tailored to client needs—from architectural design to deployment and ongoing support.
- All
- Mobile
- Web
- Desktop
Portfolio
Showcasing key engineering projects across web, mobile, AI, and desktop platforms—built during academic research, technical exploration, and personal development.
- All
- Mobile
- Web
- Desktop
- Embedded
Contact Me
If you have any questions or want to work with me, please contact me by LinkedIn, WhatsApp, email, or simply fill out the form below and I will get back to you as soon as possible.