Glean
Large (~1,475)
Sierra
Large (~500)
Best For
Glean
Best for: AI engineers who want to work on enterprise search with ex-Google leadership and don't mind below-market base pay offset by strong equity upside
Sierra
Best for: Builders who want to work with proven Salesforce and Google leadership on enterprise AI agents
Ratings
GleanSierra
4.2
4.0
Overall
3.8
3.5
Work-Life Balance
4.3
4.1
Culture & Values
4.2
4.0
Comp & Benefits
4.0
3.8
Senior Mgmt
4.0
3.8
Career Opps
👍 84% Recommend
👤 88% CEO Approval (Arvind Jain)
👍 80% Recommend
👤 84% CEO Approval (Bret Taylor)
Culture Values
Glean only
🎯 Direct Product Impact🪟 Transparent
Sierra only
💎 Strong Comp & Equity
Shared
⚙️ Engineering-Driven🌱 Learning & Growth🚀 Ship Fast & Iterate
Pros & Cons
Glean
- World-class AI talent — learn from ex-Google leadership on cutting-edge enterprise search
- Transparent collaborative culture with strong career growth
- Below-market compensation — comp rated only 3.6/5
- Sales org has high churn and toxicity problems in EMEA and US
Sierra
- Elite founders with proven track records
- Strong equity at $10B valuation
- In-person-first culture
- Competitive intensity may not suit everyone
Bottom Line
Glean
Top-tier AI engineering talent and explosive growth, but comp lags peers and the sales org has churn problems — the engineering side is the real draw.
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
Glean — 180 jobs
💼 Sales / GTM
62
💻 Engineering
38
📋 Product
15
👤 HR / People
7
⚙️ Operations
6
🎨 Design
5
📣 Marketing
5
🧠 ML / AI
5
📊 Data
1
💰 Finance
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
Glean scores 4.2/5.0 on Glassdoor with a 3.8 work-life balance rating. Sierra scores 4.0/5.0 overall with a 3.5 WLB. That’s a 0.2-point gap on overall satisfaction.
Both companies share these culture values: Engineering-Driven, Learning & Growth, Ship Fast & Iterate. Glean also emphasizes Direct Product Impact, Transparent. Sierra also emphasizes Strong Comp & Equity.
On the hiring front, Glean has 180 open roles and Sierra has 134 open roles.