Fibo
The business, the turning points, and the decisions behind them.
01 / WHAT IT BUILT
What the company did
Fibo was a Y Combinator Winter 2017 startup founded in San Francisco in 2016 by Zane Salim. It began as SaaS calendar and messaging software for small and medium businesses, then pivoted to mobile work tracking for construction and field teams — a Trello-like product where crews logged hours, tracked materials, photographed progress and synced with a real-time web dashboard for managers. It raised a $1.8 million seed round in May 2017 from Y Combinator, Fuel Capital, Global Founders Capital and angels.
02 / Fibo FAILURE REASONS
Failure factors supported by the current evidence
The verifiable facts show a team that dissolved early. Co-founder and CTO Ruben Gonzalez left in December 2017, the same year as the seed round, and Y Combinator lists Fibo as inactive with a team of 15. A 15-person burn on $1.8 million gives roughly a year of runway, and the crowded SMB SaaS market offered no room for a slow rebuild. The direct causes of the shutdown were not publicly explained.
03 / EVENT HISTORY
Events in the structured record
- Company founded
Zane Salim founds Fibo in San Francisco as SaaS calendar and messaging for SMBs.
- Peak funding round
Fibo joins Y Combinator Winter 2017, presents a mobile work-tracking pivot for construction teams at Demo Day, and raises a $1.8 million seed round in May.
- Operations ended
Co-founder and CTO Ruben Gonzalez departs in December 2017; Y Combinator lists Fibo as inactive and the product winds down.
04 / CONTEMPORARY REBUILD ASSESSMENT
Difficulty of rebuilding this project today
Material for this section is being gathered and checked. It will appear here once ready.
Overall assessment: Not completed
05 / CAUSAL CHAIN
How the factors connect
- 01
A 15-person team on $1.8M has about a year of runway — the clock starts at the seed, not at launch
- 02
Losing the CTO in the seed year usually ends the company, whatever the roadmap says
- 03
Pivoting from SMB messaging to construction tracking mid-flight splits focus at the worst moment
- 04
YC's Inactive tag with no post-mortem is the quiet standard for W17 SaaS also-rans