Xavier Callait
Software Engineer | Object-Oriented Programming | Databases/SQL | AWS/Terraform IaaC | API Design/Microservices | CI/CD Pipelines | Git/GitHub | Machine Learning | Collaborative Problem-Solver
- Role
- Full Stack Engineer at Alaris Security
- Location
- San Francisco, CA, US
- LinkedIn followers
- 500 followers
About Xavier Callait
Recent Computer Engineering Graduate with strong academic and real-world experience in software development, embedded software, and cloud integration. Demonstrated success in building robust software across IoT, cybersecurity, and robotics domains. Proven ability to apply technical expertise to solve real-world problems, mentor others, and create secure and scalable systems through thoughtful design.Software Engineer | Security Engineer | Cloud EngineerEntry-Level and Associate R••••••••@gmail.comIndustry Experience in Software Development & API DesignDeveloped a C# microservice implementing Enrollment over Secure Transport (EST, RFC 7030) to support automated IoT certificate enrollment and provisioning. Integrated automated API health tests into GitHub CI/CD workflows to strengthen deployment stability. Built an HTML-based status dashboard to monitor real-time service health and improved developer-facing API documentation and onboarding material, resulting in better integration experiences. Leadership in Embedded Systems & Software DevelopmentLed the software team of Purdue ROV in building and deploying software for a ROS2-based underwater robotic system. Modernized the Typescript frontend for improved real-time monitoring. Engineered UART/SPI communication frameworks using object-oriented Python scripts with cyclic redundancy checks and testing infrastructure, reducing packet loss to <1%. Scaled the team from 5 to 16, delivered technical workshops in ROS2 and Git, and managed sprint planning, timelines, and code reviews across GitHub.Cybersecurity & Software Engineering MentoringAs a Teaching Assistant at Purdue, supported students in applying software engineering and security principles through cloud-native development and cryptographic systems. Delivered lecture on system modeling and threat analysis using ThreatModeler. Facilitated deployment of Typescript projects on AWS (Lambda, EC2, DynamoDB, S3, API Gateway). Taught and guided Python implementations of encryption algorithms (DES, AES, RSA), hashing, modular arithmetic, and attack simulations (buffer overflows, port scanning, DoS).Core Competencies- Software Development & Software Design- AWS Cloud Infrastructure- Microservices & API Design- Python, C#, Typescript, Java- GitHub Actions & CI/CD- Embedded Systems- Networking & Cybersecurity- Problem Solver- Collaborative & team player- Fast and eager learnerPlease contact me at x••••••••@gmail.com for opportunities in software engineering, security engineering, and cloud engineering. Let\'s connect!
Experience
Full Stack Engineer
Nov 2025 — Present · San Francisco, CA, US
Education
Purdue University College of Engineering
Bachelor's degree, Computer Engineering
Purdue University
Minor, Mathematics
Amador Valley High School
High School Diploma
2017 — 2021
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