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Location

Poland

Rate

35$  / per hour

Years of experience

14+

About

I am a full-stack software engineer with extensive experience in web development, data processing, and scalable systems. My professional journey spans various roles, including frontend and backend development, project management, and system architecture. At TopStepTrader, I led frontend development using Angular, migrating from Angular 4 to 5 and implementing tools like ngrx and webpack. My role as a full-stack developer and contractor at Zencard involved Angular and Python development for financial applications and a payment system. At Rocket Internet, I worked on full-stack and adtech engineering, focusing on backend development with Flask and SQLAlchemy, and frontend development with AngularJS. I also made significant architecture improvements and managed deployments using Docker and RabbitMQ. Previously, I served as a Senior Technical Consultant at PricewaterhouseCoopers Poland, developing tools for financial risk management using C#/.NET and MS SQL Server. At Isobar Poland, I designed and developed modules for social media platforms and a web app for the Volleyball Championship, utilizing Django and PostgreSQL. As a freelance developer at Heartgrenade.pl, I built a custom CMS-based website for a law firm. My early career includes roles at Socializer, where I developed social media apps and web tools, and Team Solutions Group, where I contributed to the development of a desktop application using the Qt framework. My educational background includes a Master’s and Bachelor’s degree in Computer Science from Warsaw University of Technology. I possess a wide range of skills in frontend and backend technologies, relational and NoSQL databases, and cloud hosting and administration.

Tech Stack

Freelance, CSS, Frontend, Git, HTML, JavaScript, Python, SQL

Experience

  • Develop and maintain both frontend and backend components of web applications using technologies like Angular, Python, Flask, SQLAlchemy, and Django.
  • Lead the frontend development efforts for various projects, including migration tasks and implementing modern frameworks and tools such as Angular 5, rxjs, ngrx, and webpack.
  • Enhance in-memory computations with Pandas and optimize deployment scripts using Ansible. Improve system architecture for non-blocking deployments using Docker and RabbitMQ VHosts.
  • Oversee the planning, execution, and delivery of IT projects, including hiring and mentoring developers. Manage cross-functional teams to ensure successful project outcomes.
  • Develop tools for financial risk management and data warehousing using C#/.NET, MS SQL Server, and related technologies. Design and implement ETL processes and business intelligence solutions.

Employment history

Fullstack developer / contractor, Zencard October 2017 - now

Develop full-stack applications using Angular and Python.
Create financial applications and standalone components for the automotive industry.
Work on payment system projects.

Angular developer, TopStepTrader October 2017 - June 2018

Lead frontend development using Angular 5, rxjs, and typescript.
Migrate codebase from Angular 4 to Angular 5.
Implement ngrx (redux store, effects), angular-cli, and webpack.

Fullstack developer, Rocket Internet April 2016 - July 2017

Fullstack and adtech engineering in online marketing team. On daily basis I wrote backend with flask, sqlalchemy, python
and frontend with help of AngularJS in coffeescript in campaign automatization tool: https://mathemads.com. Also extend
our existing library based on pandas for huge in memory computations and improve deployment scripts written in ansible
(we use docker containers). Small improvements of nginx configuration. Working also with redis, rabbitmq, postgresql,
celery and AWS (EC2, RDS, S3). Also improved architecture for non-blocking deployments thanks to docker containers
and RabbitMQ VHosts feature. Many architecture improvements were made by me. Hired 2 developers to join the team.
– Develop backend systems using Flask, SQLAlchemy, and Python.
– Implement frontend features using AngularJS and CoffeeScript.
– Enhance in-memory computations with Pandas and improve deployment scripts with Ansible.
– Optimize system architecture for non-blocking deployments using Docker and RabbitMQ VHosts.
– Hire and onboard new developers to the team.

Senior Technical Consultant at Big Data team, January 2015 - December 2015

Develop tools for financial industry, focusing on exposures impairment calculation and risk management.
Use technologies like C#/.NET, MS SQL Server 2014, WebApi 2.0, ASP MVC 5, WCF, jQuery, Knockout.js, and Bootstrap.

Senior Software Engineer, Isobar Poland December 2013 – December 2014

Design and develop extra modules for social media platforms.
Create a crawling engine using Scrapy, Celery, Redis, MongoDB, PostgreSQL, and Django.
Develop a web app for the Volleyball Championship.

Freelance Software Developer, Heartgrenade.pl August 2013 – November 2013

Develop a custom CMS-based website for a law firm using Symfony PHP framework, jQuery, CSS3, and Twitter Bootstrap.
Implement responsive web design (RWD) for both frontend and backend.

Senior Software Developer, .com social media April 2012 – August 2013

Startup again. Development of web apps, web services (including design of data layer, backend and frontend) and integration with external services. Writing of simple Adobe Flash apps based on pure ActionScript 3.0. Taking part in huge project about healty lifestyle and getting in shape: http://potrafiszschudnac.pl/ – based on Django, postgreSQL, redis, celery and external payment and SMS services. Mainly responsible for backend development.

Software Developer, Socializer March 2011 – April 2012

Develop social media apps and web tools using CakePHP and Kohana frameworks.
Work with MySQL, phpMyAdmin, HTML/CSS, jQuery, and Facebook SDK.

Junior Software Developer, Team Solutions Group – Chomikuj.pl 2010 – March 2011

Development of client desktop application Chomikbox 2.0 using Qt framework (C/C++). Taking part in every part of project from GUI programming (layouts, internal qt css stylesheets, custom widgets etc.) through system related features (Windows 7 SDK icon features on menu bar, trays animations, windows management, etc.) to network layer (files uploader/downloader with many connections). Taking care of bug tracking system based on FlySpry.

Education history

Warsaw University of Technology, Faculty of Mathematics and Information Science 2011 – 2013 Degree: Master of Computer Science
Warsaw University of Technology, Faculty of Mathematics and Information Science 2008 – 2011 Degree: Bachelor of Computer Science
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