Owner and Freelance Developer2012 - PRESENTHilgrow
- Implemented and delivered projects using a number of tools and technologies.
- Designed and implemented application data schemes for both relational and non-relational databases.
- Designed and implemented RESTful APIs and APIs based on GraphQL.
- Designed applications architecture and supporting infrastructure based on AWS as well as standalone systems.
- Conducted several large-scale data migrations between ERP, eCommerce, and other systems.
- Built and conducted load/stress tests using Apache JMeter.
- Oversaw and managed the IT delivery process.
- Maintained and monitored application performance.
IT Development and Maintenance Coordination Agency Manager2011 - 2012Orange Poland
- Coordinated the IT development and maintenance department work.
- Managed the CAPEX/OPEX budget.
- Allocated resources and tracked resource capacity.
- Developed and maintained IT system processes.
- Oversaw changes.
Senior Project Manager2003 - 2011Orange Poland
- Implemented SAP HCM in Polish Telecom and Orange Poland.
- Planned and managed the implementation project, including budget, scope, and resources.
- Reported to the project stakeholders and sponsors.
- Successfully implemented the SAP HCM system in Polish Telecom and Orange Poland.
- Managed projects and consulted on several projects within the organization.
IT Specialist2001 - 2003SAP
- Managed IT infrastructures and types of software.
- Provided IT support.