Cognition
Medium (~300)
Fireworks AI
Small (~100)
Best For
Cognition
Best for: Elite engineers who want to build frontier AI coding agents and own a meaningful equity stake
Fireworks AI
Best for: Engineers who want to work with ex-Meta AI infrastructure engineers on LLM inference
Ratings
CognitionFireworks AI
3.8
4.2
Overall
3.2
3.3
Work-Life Balance
3.9
4.3
Culture & Values
3.8
4.2
Comp & Benefits
3.6
4.2
Senior Mgmt
3.6
4.0
Career Opps
👍 76% Recommend
👤 80% CEO Approval (Scott Wu)
Culture Values
Cognition only
💎 Strong Comp & Equity🎯 Direct Product Impact
Fireworks AI only
🧩 Wears Many Hats🎧 Deep Work / Low Meetings🌱 Learning & Growth
Shared
⚙️ Engineering-Driven🚀 Ship Fast & Iterate
Pros & Cons
Cognition
- Elite engineering team with strong equity
- Cutting-edge AI agent work
- High-intensity startup pace
- In-person SF expectations
Fireworks AI
- World-class team of ex-Meta AI infrastructure engineers — technically very strong peers
- Working on LLM inference optimization which is one of the hottest areas in AI infrastructure
- Early-stage startup intensity with long hours expected and high performance bar
- Small team and rapidly evolving product means less structure, process, and career laddering
Bottom Line
Cognition
Choose Cognition if you want world-class AI agent research (makers of Devin) with strong equity upside — but expect top-tier intensity and mandatory in-person in San Francisco.
Fireworks AI
Choose Fireworks AI if you want to work with ex-Meta AI infrastructure engineers on cutting-edge LLM inference — but expect early-stage startup intensity and limited structure.
Open Roles
Cognition — 62 jobs
💻 Engineering
21
💼 Sales / GTM
10
📊 Data
3
⚖️ Legal
2
⚙️ Operations
2
💰 Finance
1
👤 HR / People
1
📣 Marketing
1
🧠 ML / AI
1
Fireworks AI — 30 jobs
💻 Engineering
9
💼 Sales / GTM
5
📊 Data
1
🎨 Design
1
👤 HR / People
1
📣 Marketing
1
🧠 ML / AI
1
⚙️ Operations
1
📋 Product
1
Summary
Cognition scores 3.8/5.0 on Glassdoor with a 3.2 work-life balance rating. Fireworks AI scores 4.2/5.0 overall with a 3.3 WLB. That’s a 0.4-point gap on overall satisfaction.
Both companies share these culture values: Engineering-Driven, Ship Fast & Iterate. Cognition also emphasizes Strong Comp & Equity, Direct Product Impact. Fireworks AI also emphasizes Wears Many Hats, Deep Work / Low Meetings, Learning & Growth.
On the hiring front, Cognition has 62 open roles and Fireworks AI has 30 open roles.