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Josh Liebow-Feeser

90d · built 2026-09-10

top-100 contributor

Performance

What Josh Liebow-Feeser shipped in the selected window, measured in ETV, and how it compares with the 90 days before it.

Effective capacity

+40.8engineers

delivers like 41.8 (41.8x pre-AI)

Output (ETV)

65.2ETV

+659.5% vs 8.6 prior

Features share

66.8%

+17.0 pp vs prior window

Fixes share

1.7%

−2.7 pp vs prior window

Work mix

66.8% Features3.8% Maintenance1.4% Tests26.3% Docs1.7% Fixes

39 commits over 90 days, ending 2026-09-10.

Where this dev ranks

Percentile against the global top-100 leaderboard (all-time totals).

By total ETV
Top 54 %
By commits
Top 79 %
By Features share
Top 2 %

Daily performance

Daily ETV, stacked by Features, Maintenance, Tests, Docs and Fixes.

Repository spread

Where this developer's commits land. Concentrated work (top1 > 80%) vs polymath spread (top1 < 30%).

100.0 % of commits in zerocopy

Focused
RepoCommitsETV
zerocopy3865.5

Most impactful commits

Top 10 by ETV in the last 90 days.