Cerebras Systems
Large (~700)
Fireworks AI
Small (~100)
Best For
Cerebras Systems
Best for: Hardware and systems engineers who want to build the world's fastest AI chip at a newly public company
Fireworks AI
Best for: Engineers who want to work with ex-Meta AI infrastructure engineers on LLM inference
Ratings
Cerebras SystemsFireworks AI
4.0
4.2
Overall
3.8
3.3
Work-Life Balance
4.1
4.3
Culture & Values
4.0
4.2
Comp & Benefits
3.8
4.2
Senior Mgmt
3.8
4.0
Career Opps
👍 80% Recommend
👤 84% CEO Approval (Andrew Feldman)
Culture Values
Cerebras Systems only
🎯 Direct Product Impact
Fireworks AI only
🚀 Ship Fast & Iterate🧩 Wears Many Hats🎧 Deep Work / Low Meetings
Shared
⚙️ Engineering-Driven🌱 Learning & Growth
Pros & Cons
Cerebras Systems
- Collaborative culture with strong mentorship
- Autonomy in small self-managed teams
- Top-down decisions with aggressive timelines
- Recent layoffs and workload concerns
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
Cerebras Systems
Choose Cerebras if you want to work on wafer-scale AI chips with collaborative mentorship and autonomy — but expect aggressive timelines driven from the top and recent organizational instability post-IPO.
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
Cerebras Systems — 93 jobs
💻 Engineering
58
🧠 ML / AI
10
💰 Finance
5
📋 Product
5
📣 Marketing
2
⚙️ Operations
2
🎨 Design
1
⚖️ Legal
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
Cerebras Systems scores 4.0/5.0 on Glassdoor with a 3.8 work-life balance rating. Fireworks AI scores 4.2/5.0 overall with a 3.3 WLB. That’s a 0.2-point gap on overall satisfaction.
Both companies share these culture values: Engineering-Driven, Learning & Growth. Cerebras Systems also emphasizes Direct Product Impact. Fireworks AI also emphasizes Ship Fast & Iterate, Wears Many Hats, Deep Work / Low Meetings.
On the hiring front, Cerebras Systems has 93 open roles and Fireworks AI has 30 open roles.