Antonio S.

Antonio S.

Senior Software Engineer

Croatia
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About Me

Proficient Software Engineer with 10+ years of experience focused primarily on backend development with hands-on experience in DevOps. Antonio was involved in leading projects with 100k+ unique active monthly users and founded two SaaS applications. He is highly-adaptable in different roles and strives to make things easily-maintained and reusable while meeting project goals and leading teams to success.

Work history

UpStack
UpStack
Senior Software Engineer
2020 - Present (4 years)
Remote
  • Create and develop innovative software solutions for different clients across a broad range of industries.

  • Participate in scrums consisting of cross-functional teams, both software and hardware.

  • Ensure that features are being delivered efficiently and on-time.

Amodo
Amodo
Lead DevOps Engineer
2020 - 2020
Remote
  • Designed, developed, and maintained an infrastructure where each component can scale easily. Ensured high availability of platforms and systems according to SLAs.

  • Maintained and improved Ansible repo used for automation and CI/CD using Jenkins.

  • Defined, implemented, maintained, and improved backup and disaster recovery procedure. Mentored and trained engineering team members throughout the company.

SpareParts
SpareParts
Co-Founder & FullStack Developer
2018 - 2020 (2 years)
Remote
  • Optimized infrastructure costs by planning and developing the app architecture in a way so that a number of scrapers are scaled programmatically, through an admin interface or automatically behind the scenes depending on the application load.

  • Implemented unit tests for the backend using Mocha and Chai, as well as set up monitoring using Prometheus and Grafana.

  • Used Ansible and Docker for automation and easier deployments. Developed frontend dashboards using ReactJS, Redux, Saa, and backend/APIs using NodeJS, Koa, Typescript, MongoDB, Docker.

Amodo
Amodo
Senior Software Engineer
2017 - 2020 (3 years)
Remote
  • Performed the design, development, optimization, and maintenance of DRF APIs with over 120k+ lines of Django code and 350+ Django model.

  • Implemented billing system and developed multiple payment gateway integration.

  • Applied best coding practices, to write clean, reusable and future-proof code, covered with unit tests.

AdSignal
AdSignal
Founder & FullStack Developer
2016 - 2020 (4 years)
Remote
  • Acted as Sole developer in building the application; created the backend and APIs using Laravel, Mysql, Docker, and Redis. Developed the frontend dashboard using VueJS and SaaS.

  • Planned and developed the app architecture to scrape an average of 40 sites every minute while at the same time keeping infrastructure costs low.

  • Implemented various payment gateways over time including SecurionPay and 2Checkout.

Cackalo
Cackalo
FullStack Developer
2015 - 2017 (2 years)
Croatia
  • Managed to create and execute a cloud infrastructure to handle over 200k sessions a day and millions of daily page views.

  • Introduced and implemented load balancing, DB replication, caching, file storage, and a robust backup for both database and uploaded media files.

  • Succeeded in bringing the website to 2nd most visited classified ads website in Croatia during my time there.

Freelancer
Freelancer
Software Engineer
2013 - 2017 (4 years)
Remote
  • Worked on the development of various websites, web applications, web stores, WordPress/Joomla/Drupal sites, stateful and stateless landing pages, etc.

  • Developed an Open source scaffolding Web Application for managing a car rental business, using Laravel and AngularJS.

  • Closely collaborated with client, creative, and development teams to create and optimize interactive, user-friendly, and feature-rich websites.

Portfolio

Co-Founder & FullStack Developer - SpareParts
Co-Founder & FullStack Developer - SpareParts

Created a Web App (SaaS) that scrapes truck & car spare parts prices and other information from different stores in real time to save time and money. Optimized infrastructure costs by planning and developing the app architecture in a way so that a number of scrapers are scaled programmatically, through an admin interface or automatically behind the scenes depending on the application load. Used Ansible and Docker for automation and easier deployments. Developed frontend dashboards using ReactJS, Redux, Saa, and backend/APIs using NodeJS, Koa, Typescript, Python, MongoDB, Docker.

Founder & FullStack Developer - AdSignal
Founder & FullStack Developer - AdSignal

Developed a Web App (SaaS) that constantly tracks car classifieds websites for cars that match your criteria and notifies you via push notification immediately. Saves time and gives you an edge in not missing a good deal. Acted as Sole developer in building the application; created the backend and APIs using Laravel, Mysql, Docker, and Redis. Developed the frontend dashboard using VueJS and SaaS.

FullStack Developer - Cackalo
FullStack Developer - Cackalo

The project is one of the largest classified ads websites in Croatia with 20k+ daily unique visitors. Managed to create and execute a cloud infrastructure to handle over 200k sessions a day and millions of daily page views. Introduced and implemented load balancing, DB replication, caching, file storage, and a robust backup for both database and uploaded media files. Succeeded in bringing the website to 2nd most visited classified ads website in Croatia during my time there. Technologies used in the project: PHP, Python, Django, MySQL, Node.js, Redis.

Software Developer - Koferi
Software Developer - Koferi

Developed a niche web-store specializing in luggage/travel bags. Integrated data from various back-end services and databases. Created the website layout/user interface by using standard practices. Technologies used in the project: VueJS, Vuex, SaaS, Webpack.

Education

Bachelor of Engineering in Information Technology
Bachelor of Engineering in Information Technology
Zagreb University of Applied Sciences