Kerkko "Xylix" Pelttari
Always solving problems.
Work Experience
Entrepreneur - Software consultant
Tmi Xylix
2021 -
Helsinki
Python, Typescript, React, Postgres
Small-scale web development projects for clients.
Software Engineer
Robocorp Oy
9/2020 - 06/2023
Helsinki
Robot Framework, Python, Typescript, AWS
Creating and maintaining Robot Framework libraries for RPA development. Cloud platform full-stack development along with open-source Python and browser extension development.
Junior Developer
Reaktor Oy
5/2020 - 8/2020
Helsinki
Robot Framework, Python, Typescript
Developing cutting-edge browser automation library Robot Framework Browser. Worked with an open-source team governing the project. See github.com/marketsquare/RobotFramework-Browser
Linux Developer
Contribyte Oy
10/2017 - 10/2018
Helsinki
Java, Bash, Confluence, Jira, VersionOne
Administrating project management platforms for customers. L1 & L2 technical support and writing plugins and scripts.
Trainee
Päivölä Student Innovation Lab (PSIL) Oy
08/2015– 06/2017
Valkeakoski
12h / week internship during high school. Did a bit of everything, from security to deployment to full stack development to helping with programming classes.
Volunteering
Board Member & Executive Director
Effective Altruism Finland
11/2021 -
Helsinki
Applying for funding, decisionmaking, leading the board, managing and supporting employees.
- Treasurer (11/2021 - 04/2022)
- Chair of the Board (04/2022 - 05/2023)
- Vice Chair (05/2023 - 11/2024)
- Executive Director (08/2025 -)
Education
Bachelor’s degree in Computer Science
University of Helsinki
09/2017-05/2026
Helsinki
Studies include algorithms, computer architectures, functional programming, type theory, math and machine learning & AI.

Contact
Details
Skills
JavaScript
TypeScript
React
Git
Python
Robot Framework
Java
Bash
Maintaining Open-Source
Shipping MVPs
Working in self-directing teams
Large language models
llama.cpp
Hobbies
LARPing
Tabletop RPGs
Video games
Reading