Author

Ivan K.

Senior Software Engineer at DanubioSince 2021

Ivan is a senior software engineer at Danubio. He has owned long-running platform work across multi-tenant rebuilds and global marketplace systems, with a focus on the parts of the stack that need to keep running while they change. Five years in, he picks up the kind of platform problems that take quarters to unwind, not sprints.

Outside work, he sails. Boats, wind, long stretches with no internet.

Give me a million rows and a hard latency target. That's my favorite kind of week.

Case studies Ivan led

Real work, named owners.

Real-time performance analytics dashboard handling 20k req/s

Inside Real Estate·PropTech

Inside Real Estate launched Vitals, a daily performance dashboard for every brokerage on BoldTrail. Danubio designed and built the real-time event tracking, scoring, and aggregation service behind it, end-to-end.

2024 – 2025

Rebuilding a live multi-tenant platform without downtime

Inside Real Estate·PropTech

CORE Home was live with pilot brokerages when Danubio took ownership of the stack. The rebuild migrated tenants one at a time onto a stronger foundation, with no cutover and no broken clients. The same platform now carries 5,000+ tenants across web and mobile.

2022 – 2024

Internationalizing a crypto marketplace to 40+ languages

Paxful·Cryptocurrency / FinTech

Paxful was a peer-to-peer crypto marketplace operating globally. Over two years, Danubio built its localization layer - externalization, locale-aware formatting, RTL, and a Crowdin-backed release pipeline - that took the platform to 40+ languages.

2019 – 2021

Writing

Not on the blog yet.

Ivan hasn’t published a blog post yet. Browse the rest of the team’s writing on the Danubio blog.

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