Jozef is a Senior Python Developer with 8+ years of industry experience designing, developing, and deploying highly responsive web apps and solutions that align with business needs. He has a solid technical background in the latest software engineering processes, methodologies, and best practices, diving into code repositories, making changes to fix defects, and improving functionalities without breaking other features. Jozef's versatile talents have helped him to create desktop apps, practice DevOps, build front ends with modern frameworks, create and optimize back ends, and set up CI/CD pipelines.
Worked as part of a 20-member team to optimize and refactor a large codebase constituted of multiple Python applications for a Finnish mobile operator.
Engineered new features following client requirements, optimizing algorithms and SQL queries to tweak performance.
Handled the design of back-end APIs and caching processes to improve performance, migrated codebase to new versions, and implemented unit tests/TDD.
Supervised the development of a plugin (written in MicroPython and uses gRPC) to Trezor Wallet to support Tezos cryptocurrency.
Developed a webpage for the Hanus Days Festival, a unique social city academic festival offering a value program at a point where Christianity meets today's society. Used modern deployment solutions with GitLab CI and Docker Swarm for zero downtime, as well as Cloudflare CDN for special caching, resulting in minimal requirements on back-end servers.
Spine Hero tracks users posture via web (or depth) camera, notifying them when they sit wrongly. It comes with a notification system that notifies users least disturbingly. The project moved from a startup to an open-source project.
Worked on an open-source library for the Django REST Framework. The solution adds the ability to use ETags and Last-Modified headers to DRF for better caching.
Education
AWS Certified Cloud Practitioner (Expired Mar 2024)
