Full Stack Developer with 2+ years of experiences in web and mobile app development
Hi! My name is Cosmas and you can call me by Cosmas or Billy.
Work Experiences
See detailed my work experiences here, or by following links on each title.
Full Stack Developer at PT Tancorp Abadi Nusantara
January 2024 – present (Surabaya)
- Develop and maintain mostly Laravel websites and Flutter apps for external and internal use, with 300+ active users across Tancorp’s business units. Also wrote missing comments and documentation on existing projects.
- Handles users directly from asking requirements to delivering finished projects.
- Published some internal apps to the App Store and Play Store with no noticeable blocks.
- Takes care of some servers and deployed a few internal projects on LAMP-based containers.
Full Stack Developer at Techanic
June 2022 – July 2023 (Surabaya)
- Deployed 3 apps within one year of development, with 250+ downloads combined over Apps Store and Play Store.
- Collaborated with a team of 10+ people to create Flutter apps and a Laravel-based website for Techanic, a subsidiary company of “PT. Dr. Gadget Indonesia”.
- Developed Flutter apps using BLoC state management and atomic design system to accelerate development.
- Tracked and completed over 100+ assigned Jira tasks, following Figma designs and instructions on Confluence.
Freelancing
2022 - present
During my free time, I took some freelancing projects from my friends ranging from programming to editing projects.
Laravel Developer (Internship) at Institut Sains dan Teknologi Surabaya Institut Sains dan Teknologi Surabaya
September 2020 – January 2021 (Surabaya)
- Built a certification website using Laravel with another student, which served 10+ certification classes used by about 50+ people
- The website was built on Laravel with Bootstrap front-end, MySQL database, and Git versioning.
- Integrated campus web service to the authentication system.
Educations
Bachelor of Informatics Engineering (Sarjana Komputer) – Institut Sains dan Teknologi Surabaya
July 2017 – November 2021
- Majored in Computer Science and completed the study with a GPA of 3.85/4.0.
- Studied Computer Vision, Data Mining, Machine Learning, Natural Language Processing, App (C#, Android), Web Development (Laravel, Code Igniter), and others.
- Participated in campus events like coding competitions, Bunkasai, Obake House, etc.
Senior High School – SMAK St. Louis 1 Surabaya
July 2014 – June 2017
- Majored in Science during the study and participated in 5+ internal and external events as a Gamelan player.
Skills
Web Development
Laravel (with Livewire and Filament), PHP, Javascript, JQuery, NodeJS, REST API.
Mobile Development
Flutter (using BLoC, and GetX) on iOS and Android, and Java Android.
DBMS
MySQL, MongoDB.
Machine Learning
Computer Vision using Keras and TensorFlow.
Language
- Proficient in Indonesian (native), and English.
- Basic proficiency in Japanese and Chinese.
Others
- Git tools (Github, Gitlab, etc.)
- Web Scraping using Scrappy or Selenium.
- Microsoft Office.
- Setting up Linux using Apache for webservers.
- Good problem solver in tight timeframe.