woliveiras William Oliveira
Software Engineer | book writer | mentor | speaker
EVIDENCE BASE
50
Repositories
4909
Commits
6588
Files analyzed
80
Technologies
421
Evidence
136
Active months
Based on 50 repository passports · 49/50 current
ENGINEERING PROFILE
Frontend65%
Backend38%
Testing44%
DevOps73%
CORE TECHNOLOGIES
HR: name + projects · Lead: + files/LOC · persistence Core≥4
Markdown Core
LANGUAGE · 49/50 repos · 1453 files · 131471 LOC
Depth 70 · HIGH
TypeScript Core
LANGUAGE · 15/50 repos · 490 files · 49713 LOC
Depth 58 · HIGH
Go Core
LANGUAGE · 5/50 repos · 416 files · 62752 LOC
Depth 70 · HIGH
Kotlin Recurring
LANGUAGE · 2/50 repos · 411 files · 54999 LOC
Depth 70 · HIGH
JavaScript Core
LANGUAGE · 28/50 repos · 219 files · 31324 LOC
Depth 70 · HIGH
JSON Core
LANGUAGE · 35/50 repos · 212 files · 422952 LOC
Depth 70 · HIGH
YAML Core
LANGUAGE · 20/50 repos · 161 files · 35941 LOC
Depth 70 · HIGH
JUnit Recurring
TESTING · 2/50 repos · 156 files · 21114 LOC
Depth 28 · HIGH
Python Core
LANGUAGE · 7/50 repos · 155 files · 31233 LOC
Depth 70 · HIGH
React Core
FRAMEWORK · 14/50 repos · 150 files · 11488 LOC
Depth 74 · HIGH
XML Core
LANGUAGE · 4/50 repos · 62 files · 7981 LOC
Depth 70 · HIGH
Testify Emerging
TESTING · 1/50 repos · 42 files · 7009 LOC
Depth 57 · HIGH
ESLint Core
QUALITY · 14/50 repos · 37 files · 141182 LOC
Depth 65 · HIGH
Next.js Core
FRAMEWORK · 5/50 repos · 34 files · 3187 LOC
Depth 62 · HIGH
npm Core
BUILD_TOOL · 29/50 repos · 29 files · 290 LOC
Depth 80 · HIGH
Terraform Recurring
LANGUAGE · 3/50 repos · 25 files · 737 LOC
Depth 70 · HIGH
Vitest Core
TESTING · 4/50 repos · 25 files · 2358 LOC
Depth 53 · HIGH
Echo Emerging
FRAMEWORK · 1/50 repos · 25 files · 3769 LOC
Depth 81 · HIGH
C Emerging
LANGUAGE · 1/50 repos · 21 files · 407 LOC
Depth 70 · HIGH
SQL Recurring
LANGUAGE · 2/50 repos · 20 files · 691 LOC
Depth 70 · HIGH
Redis Core
CACHE · 8/50 repos · 17 files · 28788 LOC
Depth 61 · HIGH
TOML Core
LANGUAGE · 10/50 repos · 17 files · 330 LOC
Depth 70 · HIGH
Shell Core
LANGUAGE · 7/50 repos · 15 files · 981 LOC
Depth 70 · HIGH
Zod Recurring
LIBRARY · 2/50 repos · 14 files · 982 LOC
Depth 74 · HIGH
React Router Recurring
LIBRARY · 3/50 repos · 14 files · 815 LOC
Depth 74 · HIGH
Java Emerging
LANGUAGE · 1/50 repos · 12 files · 256 LOC
Depth 70 · HIGH
NumPy Recurring
LIBRARY · 3/50 repos · 11 files · 2463 LOC
Depth 74 · HIGH
pytest Emerging
TESTING · 1/50 repos · 11 files · 1702 LOC
Depth 74 · HIGH
Hibernate Emerging
LIBRARY · 1/50 repos · 10 files · 237 LOC
Depth 74 · HIGH
Gradle Core
LANGUAGE · 4/50 repos · 9 files · 119 LOC
Depth 70 · HIGH
C# Recurring
LANGUAGE · 2/50 repos · 8 files · 682 LOC
Depth 70 · HIGH
MongoDB Core
DATABASE · 5/50 repos · 7 files · 12064 LOC
Depth 61 · HIGH
pnpm Core
BUILD_TOOL · 7/50 repos · 7 files · 70 LOC
Depth 80 · HIGH
Prettier Core
QUALITY · 6/50 repos · 7 files · 42548 LOC
Depth 65 · HIGH
Vite Core
BUILD_TOOL · 4/50 repos · 6 files · 263 LOC
Depth 70 · HIGH
Go Modules Core
BUILD_TOOL · 6/50 repos · 6 files · 60 LOC
Depth 80 · HIGH
Webpack Recurring
BUILD_TOOL · 3/50 repos · 6 files · 211 LOC
Depth 70 · HIGH
Lodash Recurring
LIBRARY · 2/50 repos · 5 files · 12833 LOC
Depth 70 · HIGH
FastAPI Recurring
FRAMEWORK · 2/50 repos · 5 files · 946 LOC
Depth 70 · HIGH
Pydantic Recurring
LIBRARY · 3/50 repos · 4 files · 1022 LOC
Axios Recurring
LIBRARY · 3/50 repos · 4 files · 115 LOC
Depth 56 · HIGH
Poetry Core
BUILD_TOOL · 4/50 repos · 4 files · 40 LOC
Depth 80 · HIGH
Ruby Emerging
LANGUAGE · 1/50 repos · 4 files · 384 LOC
Depth 70 · HIGH
Express Recurring
FRAMEWORK · 2/50 repos · 4 files · 95 LOC
Depth 58 · HIGH
Requests Recurring
LIBRARY · 2/50 repos · 3 files · 455 LOC
pip Recurring
BUILD_TOOL · 3/50 repos · 3 files · 30 LOC
Depth 80 · HIGH
uv Recurring
BUILD_TOOL · 3/50 repos · 3 files · 30 LOC
Depth 80 · HIGH
Rust Emerging
LANGUAGE · 1/50 repos · 3 files · 264 LOC
Depth 70 · HIGH
Bundler Recurring
BUILD_TOOL · 3/50 repos · 3 files · 30 LOC
Depth 80 · HIGH
Yarn Recurring
BUILD_TOOL · 3/50 repos · 3 files · 30 LOC
Depth 80 · HIGH
debug Recurring
LIBRARY · 2/50 repos · 3 files · 433 LOC
Depth 45 · HIGH
pandas Recurring
LIBRARY · 2/50 repos · 3 files · 1234 LOC
Dockerfile Recurring
LANGUAGE · 3/50 repos · 3 files · 85 LOC
Depth 70 · HIGH
PostgreSQL Recurring
DATABASE · 2/50 repos · 2 files · 11738 LOC
Depth 61 · HIGH
Svelte Emerging
LANGUAGE · 1/50 repos · 2 files · 244 LOC
Depth 70 · HIGH
SQLx Emerging
DATABASE · 1/50 repos · 2 files · 220 LOC
Depth 62 · HIGH
Axum Emerging
FRAMEWORK · 1/50 repos · 2 files · 215 LOC
Depth 62 · HIGH
Cargo Recurring
BUILD_TOOL · 2/50 repos · 2 files · 20 LOC
Depth 80 · HIGH
Serde Emerging
LIBRARY · 1/50 repos · 1 files · 187 LOC
Depth 58 · HIGH
Starlette Emerging
FRAMEWORK · 1/50 repos · 1 files · 173 LOC
Depth 58 · HIGH
Tokio Emerging
LIBRARY · 1/50 repos · 1 files · 28 LOC
Depth 49 · HIGH
Jackson Emerging
LIBRARY · 1/50 repos · 1 files · 12479 LOC
Depth 58 · HIGH
body-parser Emerging
LIBRARY · 1/50 repos · 1 files · 53 LOC
Depth 58 · HIGH
Playwright Emerging
TESTING · 1/50 repos · 1 files · 584 LOC
Depth 37 · HIGH
Uvicorn Emerging
LIBRARY · 1/50 repos · 1 files · 494 LOC
Depth 58 · HIGH
Supertest Emerging
TESTING · 1/50 repos · 1 files · 37 LOC
Depth 32 · HIGH
Socket.IO Emerging
LIBRARY · 1/50 repos · 1 files · 53 LOC
Depth 58 · HIGH
Tailwind CSS Recurring
LIBRARY · 2/50 repos · 1 files · 88 LOC
Depth 54 · HIGH
NuGet Emerging
BUILD_TOOL · 1/50 repos · 1 files · 10 LOC
Depth 80 · HIGH
python-dotenv Emerging
LIBRARY · 1/50 repos · 0 files · 0 LOC
MarkupSafe Recurring
LIBRARY · 2/50 repos · 0 files · 0 LOC
Black Emerging
QUALITY · 1/50 repos · 0 files · 0 LOC
orjson Emerging
LIBRARY · 1/50 repos · 0 files · 0 LOC
Ruff Emerging
QUALITY · 1/50 repos · 0 files · 0 LOC
Jinja2 Emerging
LIBRARY · 1/50 repos · 0 files · 0 LOC
HTTPX Recurring
LIBRARY · 2/50 repos · 0 files · 0 LOC
Jest Emerging
TESTING · 1/50 repos · 0 files · 0 LOC
Mocha Emerging
TESTING · 1/50 repos · 0 files · 0 LOC
Testing Library Core
TESTING · 4/50 repos · 0 files · 0 LOC
typing_extensions Emerging
LIBRARY · 1/50 repos · 0 files · 0 LOC
ENGINEERING HABITS
containerizationobserved
automated_testsobserved
documentationobserved
lintingobserved
formattingobserved
continuous_integrationobserved
Not observed ≠ does not know
PROJECT PORTFOLIO
aprendendo-clojure Markdown
vimparanoobs Markdown
__s Bundler
front-end-career Bundler
blog npm
pastel npm
pokedex npm
learning-nodejs MongoDB
ACTIVITY & OWNERSHIP
Active months 136
Commits 4909
Owner authored 93%
PRIMARY PROFILE — HR VIEW
Full-stackMarkdown · TypeScript · GoHigh ownership
In 30 sec: direction — full-stack, core — Markdown · TypeScript · Go, 50 repos 2014 — 2026. No LOC or files — stability only.
DEVELOPER SIGNATURE
MarkdownTypeScriptGoKotlinJavaScriptHigh ownership
TECHNOLOGY EVOLUTION
2023
JavaScript · React
2024
TypeScript · Next.js
2025
TypeScript · PostgreSQL
2026
TS + Next
COMMUNITY / IMPACT not a skill rating
Stars 1766
Forks 198
Watchers 207
EVERYTHING ABOVE IS TRACEABLE
50 repositories · 4909 commits · 6588 files · 421 evidence
Absence of a technology in the passport does not imply lack of experience