Cerebras Systems
Large (~700)
Sierra
Large (~500)
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
Sierra
Best for: Builders who want to work with proven Salesforce and Google leadership on enterprise AI agents
Ratings
Cerebras SystemsSierra
4.0
4.0
Overall
3.8
3.5
Work-Life Balance
4.1
4.1
Culture & Values
4.0
4.0
Comp & Benefits
3.8
3.8
Senior Mgmt
3.8
3.8
Career Opps
👍 80% Recommend
👤 84% CEO Approval (Andrew Feldman)
👍 80% Recommend
👤 84% CEO Approval (Bret Taylor)
Culture Values
Cerebras Systems only
🎯 Direct Product Impact
Sierra only
🚀 Ship Fast & Iterate💎 Strong Comp & Equity
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
Sierra
- Elite founders with proven track records
- Strong equity at $10B valuation
- In-person-first culture
- Competitive intensity may not suit everyone
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.
Sierra
Choose Sierra if you want elite founders (Bret Taylor, Clay Bavor) and strong equity at a $10B enterprise AI company — but it's in-person-first and the competitive intensity won't suit everyone.
Open Roles
Cerebras Systems — 93 jobs
💻 Engineering
58
🧠 ML / AI
10
💰 Finance
5
📋 Product
5
📣 Marketing
2
⚙️ Operations
2
🎨 Design
1
⚖️ Legal
1
Sierra — 134 jobs
💻 Engineering
42
💼 Sales / GTM
27
📋 Product
15
👤 HR / People
7
🎨 Design
5
⚖️ Legal
5
📣 Marketing
5
⚙️ Operations
5
📊 Data
2
💰 Finance
1
Summary
Cerebras Systems scores 4.0/5.0 on Glassdoor with a 3.8 work-life balance rating. Sierra scores 4.0/5.0 overall with a 3.5 WLB. They’re tied on overall satisfaction.
Both companies share these culture values: Engineering-Driven, Learning & Growth. Cerebras Systems also emphasizes Direct Product Impact. Sierra also emphasizes Ship Fast & Iterate, Strong Comp & Equity.
On the hiring front, Cerebras Systems has 93 open roles and Sierra has 134 open roles.