Skill set
Industry fields of expertise
Jacek in a few words
Software engineer with over 14 years of extensive Full Stack experience in Java, Spring Boot, Typescript and Angular, specializing in customer-centric solutions for top-tier insurance companies including Allianz, Aviva, and Warta. Proven ability to deliver high-quality, scalable, and reliable applications. Skilled in all phases of development lifecycle, with expertise in responsive web development and seamless integration with external systems.
Experience
- Apreel Sp. z o.o.Senior Software EngineerJanuary 2014 - Today (11 years and 5 months)Warsaw, Poland• Spearheaded the end-to-end development of cutting-edge full-stack solutions using Java, Spring Boot, Typescript, Angular, and other modern technologies.• Architected and implemented high-performance, scalable, and secure applications, resulting in the creation of one of the market-leading insurance self-service software with unique and modern functionalities.• Conducted code reviews, mentored junior developers, and contributed to architectural decisions.• Led the development of responsive web applications for insurance products, contributing to increased sales and establishing market leadership.• Transformed a customer self-service system, serving over 1.5 million active users, into the primary channel for customer service, significantly improving satisfaction levels.• Successfully integrated key utility projects with external providers, making products modern and having unique functionalities on the market.• Demonstrated expertise in handling critical production errors, ensuring application stability with a reliable SLA.• Collaborated with DevOps and Infrastructure teams to implement stable and secure systems.• Actively contributed to the development of over 30 applications, expanding the company's project portfolio.• Provided guidance on architectural issues, performed system migration, and facilitated the integration of existing systems during a company's fusion.• Ensured system security through the migration to the latest technologies, ensuring no major vulnerability exists in the provided systems.• Directly collaborated with teams from global and leading insurance companies, including Allianz, Aviva, and Warta
- Sollers Consulting Sp. z o.o.Senior Software EngineerJanuary 2012 - January 2014 (2 years)Warsaw, Poland• Optimized agent workflows and improved customer service by developing a claim handling system.• Implemented and maintained large scale's policy and billing systems for the country's leading insurance companies, ensuring stability, efficiency, and accuracy of the key sale processes.• Collaborated closely with cross-functional teams to gather requirements, design solutions, and ensure successful project implementation.• Worked on projects for leading insurance companies, including PZU, Warta, and LINK4, delivering customized systems that enhanced operational effectiveness.
- Atinea Sp. z. o. o.Software EngineerJanuary 2010 - January 2012 (2 years)Warsaw, Poland• Managed team work, performed business and technical analysis, and led successful production implementations, exceeding customer expectations.• Demonstrated versatility and adaptability in delivering solutions using many technologies tailored to the client needs.
Recommendations
Education
- Master of ScienceWarsaw University of Technology2016Master of Science in Information Technology
- Bachelor of ScienceWarsaw University of Technology2013Bachelor of Science in Information Technology
Certifications
- AWS Certified Developer - AssociateAWS2024
- AWS Certified SysOps Administrator - AssociateAWS2024
- AWS Certified Solutions Architect - AssociateAWS2024