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I am a Graduate Software Engineer based in Warsaw, Poland, with hands-on experience in full-stack web application development, backend services, and database management. I am passionate about working with scalable architectures, distributed systems, and real-world data transformations. My education in Computer Science and Information Systems combined with internships at Samsung R&D and PwC Poland have provided me with practical knowledge in C++, Python, Typescript, React, SQL, and various big data tools. I enjoy solving complex software challenges, enhancing system functionalities, and developing user-friendly applications.…I am a Graduate Software Engineer based in Warsaw, Poland, with hands-on experience in full-stack web application development, backend services, and database management. I am passionate about working with scalable architectures, distributed systems, and real-world data transformations. My education in Computer Science and Information Systems combined with internships at Samsung R&D and PwC Poland have provided me with practical knowledge in C++, Python, Typescript, React, SQL, and various big data tools. I enjoy solving complex software challenges, enhancing system functionalities, and developing user-friendly applications.

Hanna Pleszy´nska

Programmer, Web Developer, Full Stack Developer, +2

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I am a Graduate Software Engineer based in Warsaw, Poland, with hands-on experience in full-stack web application development, backend services, and database management. I am passionate about working with scalable architectures, distributed systems, and real-world data transformations. My education in Computer Science and Information Systems combined with internships at Samsung R&D and PwC Poland have provided me with practical knowledge in C++, Python, Typescript, React, SQL, and various big data tools. I enjoy solving complex software challenges, enhancing system functionalities, and developing user-friendly applications.…I am a Graduate Software Engineer based in Warsaw, Poland, with hands-on experience in full-stack web application development, backend services, and database management. I am passionate about working with scalable architectures, distributed systems, and real-world data transformations. My education in Computer Science and Information Systems combined with internships at Samsung R&D and PwC Poland have provided me with practical knowledge in C++, Python, Typescript, React, SQL, and various big data tools. I enjoy solving complex software challenges, enhancing system functionalities, and developing user-friendly applications.

Available to hire

I am a Graduate Software Engineer based in Warsaw, Poland, with hands-on experience in full-stack web application development, backend services, and database management. I am passionate about working with scalable architectures, distributed systems, and real-world data transformations.

My education in Computer Science and Information Systems combined with internships at Samsung R&D and PwC Poland have provided me with practical knowledge in C++, Python, Typescript, React, SQL, and various big data tools. I enjoy solving complex software challenges, enhancing system functionalities, and developing user-friendly applications.

Skills

Experience Level

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Graduate Software Engineer at Visa

April 1, 2025 - Present

Currently developing a database-agnostic full-stack web application to manage key-value data. Using React (Typescript) on the frontend and FastAPI (Python) on the backend. Responsible for designing and implementing RESTful API endpoints and working with a key-value NoSQL database (LMDB).

Internship at Samsung R&D Poland

February 28, 2025 - August 27, 2025

Performed code fixes and enhancements in C++ to improve software functionality and resolve defects. Analyzed system logs for issue diagnosis and software bug tracking. Tested software updates to ensure quality assurance and prevent regression.

Internship at PwC Poland

August 31, 2023 - August 27, 2025

Designed SQL database schemas and developed internal software using Microsoft Power Platform. Prepared user stories and validated business requirements. Worked within Scrum methodology to facilitate project management and collaboration. Engaged with clients to address their needs and ensure smooth communication.