Ottokar Vasiliev-Rojas
Sr SWE Returning from 12mo Sabbatical · 22 OSS PRs + fast.ai · Available Mar 2026
Summary
Senior software engineer (7 yrs Series C SaaS) returning from a planned 12-month sabbatical (Jan-Dec 2025, personal travel + open-source contribution to Zed editor + fast.ai coursework); prior: Staff Engineer at Anthelion ($1B ARR public SaaS) on the platform team. Available full-time from March 2026. 22 PRs merged into Zed during sabbatical.
Sabbatical + Concurrent Work
Planned Sabbatical (travel + OSS + coursework)
Self-directed · Various (Bay Area home base, SE Asia + South America travel)
Jan 2025—Dec 2025
- 6 months international travel (Vietnam, Thailand, Peru, Argentina) + 6 months focused open-source contribution + coursework.
- 22 PRs merged into Zed editor (primarily Rust; language-server + syntax-highlighting fixes); acknowledged in 2 release notes; earned commit access to a related community repo.
- fast.ai Part 1 + Part 2 completed (Jeremy Howard's deep-learning course); shipped 2 small ML projects to GitHub.
- Anthropic API Tutorials (Nov 2024); built a personal reading-list agent with Claude.
- Presented at Rust Bay Area meetup 2024 ('Language Server Performance in Zed'); wrote 2 posts on lang-server internals (2.4k combined views).
Prior Engineering Experience
Staff Software Engineer — Platform
Anthelion (public B2B SaaS, $1B ARR) · San Francisco, CA
Jun 2021—Dec 2024
- Led the platform team (6 engineers) on the core metrics + observability stack.
- Shipped 4 major infrastructure projects including the metrics-store rebuild that dropped p99 read latency 480ms → 68ms.
- Owned 4 SLOs across the platform + on-call rotation lead for 3 years.
- Wrote the team's Rust migration RFC (from Go for the hot path); shipped phase 1 of the migration Q3 2023.
Senior Software Engineer
Anthelion · San Francisco, CA
Aug 2018—May 2021
- SWE II → Senior at Anthelion (2017-2020); shipped the query-planner performance rewrite that lifted p99 query latency 62%.
- Promoted to Staff Q2 2020 on the strength of the query-planner work + cross-team RFC leadership.
Availability + References
• Available full-time from March 3, 2026; open to hybrid (2-3 days on-site) in Bay Area or fully remote; open to relocation. • References: 2 former Staff peers from Anthelion (both now VP Eng at Series C companies); 1 Zed core-team contributor; reachable via LinkedIn.
Education
BS in Electrical Engineering + Computer Science (EECS)
UC Berkeley
Aug 2014—May 2018
Senior Engineer Returning from Sabbatical
Sr SWE returning from 12mo sabbatical · 22 OSS PRs + fast.ai · Available Mar 2025
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