Monica Sajewski
Senior Software Engineer at Polar Signals
Gdańsk, Pomeranian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolMonica Sajewski is a Senior Software Engineer based in Gdańsk with 10 years of experience building user-focused web applications and data visualizations. She has progressed from freelance and front-end roles to senior full-stack work, currently contributing at Polar Signals after shaping visualization products at Virtualitics and Netguru. Monica blends strong front-end craftsmanship—React, responsive design and UI component work—with practical product sense from earlier marketing and analytics roles. She contributes to open-source continuous-profiling tooling (Parca), improving UX through custom components, dark mode and navigation enhancements that help teams analyze CPU and memory usage more effectively. Known for translating complex data needs into polished interfaces, she also brings the analytical rigor of a Wharton-trained systems thinker. Colleagues rely on her to bridge design, data and engineering to ship reliable, performance-aware software.
10 years of coding experience
6 years of employment as a software developer
Jerome Fisher M&T ProgramBachelor of Science (BS), Business/Managerial Economics, Summa Cum Laude, Bachelor of Science (BS), Business/Managerial Economics, Summa Cum Laude at University of Pennsylvania - The Wharton SchoolBachelor of Science (BS), Systems Engineering, Summa Cum Laude, Bachelor of Science (BS), Systems Engineering, Summa Cum Laude at University of Pennsylvania
English, Polish, Spanish
Github Skills (8)
typescript10
typescripts10
front-end-development10
react10
typescript-types10
callgraph10
ui-components10
go5
Programming languages (2)
Github contributions (5)
parca-dev/parca
Jan 2022 - Jan 2023
Continuous profiling for analysis of CPU and memory usage, down to the line number and throughout time. Saving infrastructure cost, improving performance, and increasing reliability.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:88 reviews, 125 commits, 71 PRs in 1 year
Contributions summary:Monica contributed to the frontend of the project by adding new profile options and modifying UI components. They implemented a custom Pill component with various styling options and integrated a new Targets page with a basic table and data fetching functionality. Furthermore, the user made improvements to the navigation bar and the Dark Mode Toggle, enhancing the overall user experience.
memorymemory-usageobservabilityprometheusmonitoring
monicawoj/personal-site
Aug 2019 - Apr 2022
Personal site and portfolio: "roots to keep grounded, wings to soar"
Contributions:2 PRs, 21 pushes, 3 branches in 2 years 8 months
reacttailwindcsskeepsoarwings
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