Tymon Przemyslaw Radzik
Verified Expert in Engineering
Software Developer
Tymon is a software developer with extensive experience in managing projects and ensuring delivery at pace, entirely focused on providing his clients with tailor-made IT solutions of exceptional quality. He specializes in back-end solutions, including the design and creation of REST APIs with Python and DRF; he is also skilled in front-end development. As a contributor to various open-source programs, Tymon has mentored students and juniors to help them grow and improve their coding practices.
Portfolio
Experience
Availability
Preferred Environment
MacOS, Linux, PyCharm, Git, Postman
The most amazing...
...project I've created is a highly-automated recruitment system that was used to hire over 200 employees and saved my client tens of thousands of dollars on HR.
Work Experience
Full-stack Software Developer
Freelance
- Created multiple web applications for clients according to their specifications, often in the form of user stories. Designed back-end systems using various data storing SQL-based solutions with MySQL and PostgreSQL, and non-SQL-based with MongoDB.
- Maintained codebases with GitHub and GitLab integrated with CI/CD solutions.
- Deployed projects using cloud solutions provided by Amazon Web Services (AWS).
Product Developer
AND Digital
- Worked with the employer's clients from various industries to develop top-quality software (primarily back-end solutions – REST APIs, GraphQL, including design, creation, and integration).
- Tracked and fixed bugs using Jira as a reporting tool.
- Performed code reviews of merge requests submitted by other developers.
- Interviewed candidates for technical screening job openings at the company.
Director and Co-founder
CODEZAP Limited
- Managed a startup providing IT support and software development services for small- and medium-sized private companies operating in consulting and services industries.
- Created a web system to manage the human resources of a medium-sized company.
- Improved the performance of the client's webpage on the Google PageSpeed score from 9/100 to 94/100 on computers. The average loading time on mobile devices reduced from 21.1 seconds to 5.5 seconds, making it around 75% faster.
Software Developer and Mentor
Sugar Labs
- Mentored students participating in Google Code-in and Google Summer of Code programs, evaluated their code and working practices, and advised them on potential ways to grow.
- Performed pull request merges, raised issues and classified and responded to issues raised by others, assigned work, and prepared releases. I also collaborated with other open-source developers on GitHub.
- Created, developed, and improved multiple Sugar "activities"–educational apps used by children from all around the world. I also addressed over 100 GitHub issues.
- Won Google Code-in 2016, an international annual programming competition hosted by Google LLC.
Software Developer
The FOSSASIA
- Modified different WordPress websites belonging to the organization, applying changes to templates and custom plugins. Used technologies include PHP, JavaScript, HTML, and CSS.
- Reviewed the work of students participating in the Google Code-in 2015 programming contest, highlighting issues and suggesting changes.
- Contributed to the creation of a cross-platform mobile application with Apache Cordova (JavaScript, HTML, and CSS) to support the organization of FOSSASIA conferences.
Experience
Custom Recruitment System
The client used the system to recruit over 200 new employees and manage their data without increasing spending on their HR department due to the high level of process automation. This represented an estimated saving of $120,000 a year, meaning the cost of hiring three qualified HR employees.
Resource Management System
We have been providing the client with continuous support related to the product delivered.
Back-end Solution for a Biotechnology Reporting Tool
Skills
Languages
Python, SQL, JavaScript, CSS, HTML, TypeScript, PHP, GraphQL
Frameworks
Django, JSON Web Tokens (JWT), Django REST Framework
Libraries/APIs
REST APIs, API Development, jQuery, React
Tools
PyCharm, GitHub, Git, GitLab, Travis CI, Postman, Moodle
Paradigms
Back-end Architecture, Unit Testing, Agile Software Development, Agile, Scrum, REST, Microservices
Other
Web Development, APIs, Full-stack, IT, Data Engineering, Ajax, CI/CD Pipelines, Team Mentoring, Integration, Front-end, Software Development, Web Security, Scraping, Web Scraping, Data Scraping, Cloud Architecture, Architecture, IT Project Management, Law, Cordova, Scrum Master, Writing & Editing, Technical Writing
Platforms
MacOS, Linux, Amazon Web Services (AWS), WordPress
Storage
MySQL, PostgreSQL, MongoDB, SQLite
Industry Expertise
Network Security
Education
Progress Toward a Bachelor's Degree in Law (LLB)
University College London (UCL) - London
Certifications
Professional Scrum Master (PSM1)
Scrum.org
Professional Member of the British Computer Society (MBCS)
BCS, The Chartered Institute for IT
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