I'm Karina — a backend engineer and IT specialist trusted by NASA-scale teams. I build Python/AWS APIs, configure Google Workspace and Microsoft 365, and make DNS and email actually deliver.
I've worked backend and IT across startups, enterprise, and federal systems — shipping APIs, migrating tenants, and sorting out the DNS and identity problems that nobody else wanted to touch.
If it involves Python, AWS, Google Workspace, M365, or email that won't deliver, I've probably fixed it before.
Bring me one problem or hand over the whole stack — the backend, the workspace, and the infrastructure that connects them. Tooling is never the blocker; I work in whatever systems you already run.
Ship features and APIs that hold up under real traffic — on a codebase your team can actually maintain.
Migrations, security, and onboarding handled — so your team just logs in and gets to work.
Teams, SharePoint, Exchange & OneDrive — provisioned, secured, and quietly kept running.
Repair domain health, get mail landing in the inbox, and set up access that passes an audit — without locking your team out.
From a federal NASA platform to fast-moving startups and enterprise IT.
Every engagement on Upwork, rated a perfect 5.0. Here's what clients actually say.
"It's always a pleasure to work with Karina. She is extremely fast and continues to be my go-to freelancer for web/domain/systems needs."
"Karina is probably one of the better freelancers on the platform. She will do things quickly and knowledgably, and has the patience to figure things out if there's a snag."
"Karina is a 5-star super-pro! Smart, fast, and easy to work with — we highly recommend her!"
"Super fast, great work, easy to work with, figures out solutions to get things done."
"Karina is awesome! She was extremely patient with my lack of technical knowledge and completed the job quickly. She was very polite, professional, smart, and overall lovely to work with."
"Karina was a godsend. I had been struggling with something on my site and she worked quickly and diligently to resolve it. She was very knowledgeable."
"She not only completed the job on time and to perfection, she made some suggestions that improved the overall performance of the script."
"Karina was very enthusiastic and skilled, going above and beyond to help. Always responded promptly to messages also."
"Karina was extremely efficient and had a positive attitude during her time with us."
"Any IT problems — she's got you!"
Free 20-minute call to scope the work — no commitment. Or just send a note and I'll reply same day.