Senior Python Developer
2015 - PRESENTComp S.A.- Built from scratch a type of cybersecurity software for one of the biggest telecom operators in Poland.
- Developed IP Tracker, a tool for connecting IP addresses with customers identifications in real-time. It was written in Python on top of Redis, Elasticsearch, and PostgreSQL.
- Constructed a management interface called TM. It allows the management of IP Tracker, provisioning other services and tracking customers.
- Made simple captive portals in HTML, JavaScript, and Tornado for the back-end (with Redis as a database).
- Led a small team of 2-3 junior/mid developers and also reviewed their code.
- Created, with a team, a monitoring system using StatsD with InfluxDB and Grafana.
- Prepared the software architecture for all the applications.
- Prepared a Kibana plugin using React.
Technologies: Python (2, 3, PyPy), Elasticsearch, PostgreSQL, Redis, Django, Tornado, JavaScript, HTML, Celery, Kibana, ReactBack-end Developer
2019 - 2020Quantime.ai- Extended the existing Django app.
- Created new modules.
- Added new functionalities.
- Integrated Trello, SendGrid, Stripe, Nylas, and Here.com (geolocation).
Technologies: Python, Django, PostgreSQL, Unit Test, Stripe, SendGridSenior Django developer
2019 - 2019Pubfront- Upgraded an old Django app to the newest Django version.
- Rebuilt database models structure to work better with new products.
- Upgraded a Boto library to the newest version.
- Added code for getting data from an external API.
- Upgraded the Celery version from 3 to 4.
- Implemented front-end changes (HTML and JavaScript).
Technologies: Python, Django, PostgreSQL, Git, Unit Test, Sentry, S3Freelance Python Developer
2018 - 2018Freelance Work- Constructed the back end for an Australian site where a user can check VIN numbers.
- Created the API for receiving search requests and verifying Stripe payments.
- Developed a client for connecting to a PPSR web service.
- Enabled email sending using SendinBlue.
- Ran asynchronous tasks using Azure Queue.
- Prepared scripts to run all processes as services.
- Fixed bugs for CoinAfrique.
Technologies: Python, Django, Django REST Framework, Azure, Web Services, Zeep, StripeSoftware Developer
2011 - 2015Enigma SOI- Constructed the server part of the Home Arrest System. It was a web service created in Python on top of a PostgreSQL database.
- Developed a mail archive for Microsoft Exchange mailboxes. The back-end part was written in Python on top of the PostgreSQL, the proxy was built in .NET, and the front-end was created using Bootstrap.
- Created a type of software in Lua for the hardware section of the home arrest system. This part was responsible for collecting events and keeping communication with a central server.
- Optimized the Django applications which improved the cache, loaded data to user sessions in the background, and optimized the data processing.
- Wrote Jython scripts for processing telecom data which enabled the processing data faster than using database joins.
- Implemented minor extensions/bugfixes for the site, Cencert.pl; concerning the front and back end.
- Extended a Thunderbird extension for encrypting/decrypting emails; used C++.
- Built a service bus which received data from our applications and passed it to Oracle Service Bus. It was written using Apache Synapse.
- Helped prepare the software architecture.
Technologies: Python, Django, Lua, Java, C++, .NET, PostgreSQL
Winicjusz Szyszka
Software Developer in Chojnice, Poland
Member since July 13, 2018
Winicjusz started out as a Java developer but found that Python suited him better. He began with extending existing apps and then later built systems from scratch. Seven years later, Winicjusz is now a senior Python developer and team leader. Currently, the bulk of his work is on the back-end of web systems. His notable accomplishments include building the Home Arrest System and a threat intelligence system for large telecom operator in Poland.
Winicjusz is now available for hire
Portfolio
- Comp S.A.Python (2, 3, PyPy), Elasticsearch, PostgreSQL, Redis, Django, Tornado...
- Quantime.aiPython, Django, PostgreSQL, Unit Test, Stripe, SendGrid
- PubfrontPython, Django, PostgreSQL, Git, Unit Test, Sentry, S3
Experience
- Python 7 years
- JavaScript 7 years
- PostgreSQL 7 years
- HTML 7 years
- Unit Testing 6 years
- NoSQL 5 years
- Django 5 years
- Test-driven Development (TDD) 4 years
Availability
Part-time
Preferred Environment
PyCharm, Linux, Git, Mercurial
The most amazing...
...thing I've done was to develop the Home Arrest System from scratch.
Employment
Experience
- IP Tracker (Development)
I developed IP Tracker, a tool for connecting IP addresses with customers identifications in real time.
IP Tracker is capable of receiving data from different data sources and enables searches in real time. It combines data from different data streams to provide full results. There are over 200,000 records per second in one data stream and about 2,000 records in the other one.
Technologies: Python, Redis, Elasticsearch, PostgreSQL - Simple Captive Portals (Development)https://alert.cert.orange.pl/A/25cb7b0ea2314a5bb49a0f6bacb858a9/
I built simple captive portals in HTML, JavaScript, and Tornado for the back-end (with Redis as a database). A sample site can be seen at the link.
Skills
Languages
Python, SQL, PyPy, Jython, YAML, XML, JavaScript, HTMLFrameworks
Django REST Framework, Django, Alembic, Jinja, Twisted, CSSS, SwaggerStorage
Elasticsearch, NoSQL, Redis, PostgreSQL, JSONOther
Back-end Development, Mockups, Scalability, Code Review, Tornado, Concurrency, StatsD, CryptographyLibraries/APIs
Requests, SQLAlchemy, ReactTools
Vagrant, Celery, Git, Pytest, PyCharm, SendinBlue, VirtualBox, Sentry, Suds, GitLab CI/CD, RabbitMQ, MQTTParadigms
Test-driven Development (TDD), Microservices, Unit TestingPlatforms
Linux, Windows, CentOS, Debian
Education
- Master's degree in Computer Science2004 - 2013Warsaw University - Warszaw, Poland
Certifications
- Elastic Certified EngineerMARCH 2020 - MARCH 2022Elasticsearch
