About me
Who am I?
Profficient fullstack developer who gained experience in technology & financial industry.
Technologies
In the beginning of my IT career, I started as a JEE developer. It was a heavy, hard-to-use technology but anyways used in most companies. Because of this hard-to-use, I learnt how to bypass a long process of constant redeployments, just by writing much quicker unit-tests. Unintentionally, it lead me to writing better code as I started to think how to write a testable code. After many years in the industry, I switched to more light-weight web and integration technologies like spring and vertx but the very same techniques of writing code are ironically very up-to-date even though the underlying technology went obsolete or not recommended anymore.
Backend technologies
- Java SE + EE
- JSF
- JPA, EJB, Message Driven Beans
- Spring
- Vertx
Frontend technologies
- Javascript
- Reasonable knowledge of flow & Typescript
- Gulp & Webpack
- React
- Vue
Career
# August 2022 - November 2024
UBS Business Solutions AG in Zurich CH
- Developed and maintained backend APIs for asset management, handling accounts, transactions, and
portfolio management functionalities.
- Maintained and implemented new features for multi-banking solutions, enabling secure and seamless
account aggregation across multiple banks using EBICS (Electronic Banking Internet Communication
Standard).
- Led DevOps initiatives, optimizing CI/CD pipelines and ensuring smooth deployment processes across
development, QA, and production environments.
- Configured and maintained Jenkins pipelines using Jenkinsfiles, automated infrastructure provisioning,
and managed deployment scripts via Ansible.
- Implemented application performance monitoring with AppDynamics, identifying and resolving
performance bottlenecks.
- Provided pre-release support, troubleshooting deployment issues, debugging failures, and ensuring
smooth releases with minimal downtime.
# March 2021 - July 2022
IBM Client Innovation Center in Bern CH
- Maintained and enhanced the backend for the form exchange system, improving data validation, API
performance, and system reliability.
- Developed new frontend features for a government document exchange system, enhancing usability
and compliance with accessibility standards.
- Automated infrastructure provisioning using Ansible and Jenkins, ensuring seamless updates and
reducing manual maintenance efforts in development and QA environments.
# February 2020 - February 2021
Luxoft Excelian in Bern CH
- Designed and implemented an ELK Stack-based monitoring solution, creating real-time dashboards
with visualized application performance metrics.
- Integrated OpenBanking XS2A APIs, enabling third-party financial institutions to securely access user
account data in compliance with the Berlin Group Standard.
- Developed a responsive, mobile-friendly UI for an existing banking platform using React, improving user
experience and engagement
# March 2017 - January 2020
Goldman Sachs in Warsaw PL
- Integrated OTC trading platforms with internal quoting systems, utilizing FIX protocol to enhance
market data exchange and trade execution.
- Automated IT infrastructure monitoring for financial data integrity, reducing operational risks and
increasing data accuracy.
- Provided real-time production support during London market hours, resolving system issues and
assisting in end-of-day data reconciliation processes
# October 2015 - February 2017
Unicredit Business Integrated Solutions in Warsaw PL
- Developed and maintained the CVA Web Console, a financial risk analytics platform used by institutions
to assess credit risk exposure.
- Designed and implemented an in-house monitoring system for banking processes, automating Jenkins-
based CI/CD workflows to enhance operational efficiency.
# November 2013
Centralny Ośrodek Informatyki in Warsaw PL Development of CEPIK2 (central records of vehicles and drivers) - CEK and Resper projects.
# July 2013
Comarch in Warsaw PL - Public government project - development of EPUAP2 project.