Matheus Mendes

Matheus Mendes builds at Hone after working as a software engineer at Midjourney and Dema. He is an a16z scout and creates open-source tools and interactive web projects, including Spidey Sense. He initially built JeffTube before it joined the Jmail project and later built JCal’s frontend.

Career

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Based in: San Francisco
Elsewhere

Hone

Sep 2026 — Present

Software Engineer

Andreessen Horowitz (a16z)

Scout
Present
Scout
Apr 2025 — Present
Andreessen Horowitz

Midjourney

Software engineer
Feb 2025 — Aug 2026
Software Engineer
Feb 2025 — 2026

Dema

Apr 2023 — Feb 2025

Software Engineer

Lovable

Nov 2024 — Nov 2024

Part-Time Consultant

ACASTING

First Software Engineer, Part-Time Consultant
Nov 2023 — Mar 2024
Acasting.se
Built out the entire app, end to end, together with another engineer, and launched the first version in a single month
Founding Engineer
Nov 2023 — Feb 2024

Techover AB

Developer coach
Jun 2022 — Apr 2023
Stockholm, Stockholm County, Sweden
Full-stack Developer
May 2021 — Jun 2022
Stockholm, Stockholm County, Sweden

Products & media

github.com

Spidey Sense — edit React apps from the browser

Matheus Mendes’s open-source project connects selections in a local React app to Claude or Codex editing the source files. The repository documents Vite and Next.js integration, parallel jobs and development-only operation.

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Matheus Mendes

Hone

Andreessen Horowitz (a16z)

Scout

Scout

Midjourney

Software engineer

Software Engineer

Dema

Lovable

ACASTING

First Software Engineer, Part-Time Consultant

Founding Engineer

Techover AB

Developer coach

Full-stack Developer

Products & media

Spidey Sense — edit React apps from the browser

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List Inclusions