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Software developer portfolio

Eryk Kściuczyk

X Open-source projects
7+ Years building software
5 Freelance projects
X OSS projects contributions

Computer Science master's student at TU Berlin building practical software across web apps, systems tooling, data processing, infrastructure, and small game experiments.

Software developer portfolio terminal summaries

About Me

> cat about.txt

Stats:
- Software developer focused on practical, user-facing systems
- Technische Universitaet Berlin, Master degree 2027
- Technische Universitaet Berlin, Bachelor degree 2025
- Silesian University of Technology
- International Baccalaureate 2021

Projects

> ls projects && cat highlights.txt

Pinned GitHub highlights:
- pdf-tools-js: browser PDF merge, cut, and join utility
- busybees: cloud-native group scheduling app for shared free time
- kwikquiz: Go and HTMX quiz platform
- chatreply: CLI bridge from stdin to chat platforms
- citus-mobilitydb: Docker images for MobilityDB with Citus
- Terminal-Tetris: terminal Tetris built on a custom engine

Professional Experience

> cat professional_experience.txt

Experience:
- Role One at Company: describe ownership and impact
- Role Two at Company: describe systems, users, and outcomes
- Technologies: TypeScript, React, Astro, Node.js, databases
- Add internships, research work, freelance work, or open-source here

>

Projects and achievements

A winding record of things I have built

  1. 2026

    Spanish B1.2 course at ZEMS

    I continued learning Spanish and finished the course and exam of Spanish at B1.2 level

  2. 2026

    Project: wikiparse-rs

    Developed a rust parser and CLI for streaming Wikipedia SQL dumps into usable data formats for downstream analysis.

  3. 2025-2026

    TODO: Project: Master Application Platform for TU Berlin

    TODO: Developed a platform for applying and reviewing applications for master degrees at TU Berlin. The platform has already been used in Summer Semester 2026 for the applications for XYZ degree.

  4. 2025-Present

    Computer Science M.Sc. at Technische Universität Berlin

    I continued my studies at TU Berlin at master level.

  5. 2022-2025

    Computer Science B.Sc. at Technische Universität Berlin

    I graduated Computer Science B.Sc. at Technische Universität. My bachelor thesis was comparing horizontal and vertical scalability of two distributed spatiotemporal database systems (MobilityDB+Citus vs CrateDB) with custom Kubernetes and infrastrucutre deployments.

  6. 2025

    Project: busybees

    Developed a serverless scheduling app for university group work, using calendar integrations, Cognito auth, DynamoDB, Redis caching, and React Router. The project was being developed in a team of 2, where I've handled the backend and infrastrucutre.

  7. 2021-2025

    Project: pdf-tools-js

    Created a practical React app for manipulating PDFs in the browser, including merging, cutting, and joining documents.

  8. TODO: Bitwa o Śląsk

  9. 2021-2024

    TODO: Engie Zielona Energia

    TODO: Worked at Engie Zielona Energia corporation, a renewable energy provider and distributor company, hiring more than XYZ employeed worldwide. There I've been building interal tools.

  10. TODO: 2021-2022

    2 semesters of Computer Science B.Sc. at Silesian University of Technology

    Completed 2 semesters of Computer Science B.Sc. at Silesian University of Technology. Due to COVID, I started my studies in Poland instead of abroad. I've completed full 2 semesters at Silesian University of Technology

  11. 2022

    TODO: C2 exam in english during POLSL

    I've completed the exam XYZ and obtained the C2 English certificate.

  12. 2021

    International Baccalaureate in Gliwice (Poland)

    Graduated International Baccalaureate Program where I've completed higher level of Computer Science, Mathematics, English and German. The whole school was completed in English and thus I've acquired a C1 English certificate that is recognized by Universities

  13. 2021

    German Language Certificate: DSD 2

    Acquired German language certificate from Gäthe Institut for C1 speaking and reading comprehension and B2 for the writing skills

  14. TODO: 2020

    TODO: Project: Emeralds

    Video game with one server/screen where players usewith their phones as controllers.