sebastian@dev:~$echo"Hi there"Sebastian Alexander
# About Me
Last updated: October 12, 2026
▸Hi! I am Sebastian, a Software Engineer specializing in backend development, DevOps, and quality assurance. My journey in technology began with a deep curiosity about how systems work behind the scenes.
▸From there, I developed my skills in backend development, infrastructure automation, and quality assurance. Every system I build is a step toward my biggest dream: becoming a reliable Software Engineer at an international technology company, with expertise in server-side architecture, CI/CD pipelines, and test automation.
▸I believe the best technology is invisible — so natural that users never notice the complexity behind it. That is the philosophy I bring to every project I work on.
Backend Developer
Building robust server-side applications
DevOps Engineer
Automating deployment & infrastructure
QA Engineer
Ensuring quality through testing & automation
Chess Player
Strategic thinking & problem solving
Playing guitar, expressing creativity through melody and harmony
Gaming enthusiast who enjoys strategy and problem-solving in games
Playing chess to sharpen strategic and analytical thinking
Watching films and anime for storytelling and visual design inspiration
Exploring new frameworks and tools to improve development workflow efficiency
Reading technical documentation and engineering blog articles to stay updated with best practices
Contributing to open-source projects and building side projects to experiment with technology
Optimizing infrastructure, automation scripts, and testing strategies for deployment efficiency
Writing test cases and automation scripts to improve code quality and reliability
Backend Development - Building robust and scalable server systems
DevOps Engineering - Automating deployment and infrastructure management
QA Engineering - Test automation and quality assurance for reliable software
Chess AI Engineering - Developing artificial intelligence for chess
Mobile Development - Creating user-friendly mobile applications
Becoming a professional chess athlete and winning a world championship
Joining a major technology company as a Senior Backend Developer
Building an innovative and impactful SaaS (Software as a Service) startup
Becoming an expert freelancer in web and mobile application development
Journey of Live
SD Petra Semarang
Building a foundation for learning and curiosity
SMP Negeri 09 Semarang
Active in school activities and organizations
SMK Negeri 7 Semarang
Developing technical skills and creativity
XI SIJA 1
Network and Application Information Systems • Current
sebastian@dev:~/skills$catexpertise.json
// Backend
// Frontend
// Database
// DevOps & Tools
// QA & Testing
sebastian@dev:~/portfolio$ls-laprojects/
sebastian@dev:~/documents$catresume.pdf
Sebastian Alexander Eka Cahyana
Backend Engineer · DevOps · QA Engineer
// Education
SMK Negeri 7 Semarang
2022 – Present
SMP Negeri 09 Semarang
2019 – 2022
SD Petra Semarang
2013 – 2019
// Experience
Backend Engineer - E-Commerce Platform
2024 - Present
QA Engineer - Load Testing & Automation
2024
// Skills
Build systems that scale. Write code that lasts. Test everything.
”- ✓Professional photo
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- ✓Education history
- ✓Experience & achievements
- ✓Skills & competencies
- ✓Quote & work philosophy