Apollo.io
Large (~800)
Sierra
Large (~500)
Best For
Apollo.io
Best for: Product builders who want strong PMF and competitive comp at a sales-tech leader
Sierra
Best for: Builders who want to work with proven Salesforce and Google leadership on enterprise AI agents
Ratings
Apollo.ioSierra
4.0
4.0
Overall
3.6
3.5
Work-Life Balance
4.0
4.1
Culture & Values
4.1
4.0
Comp & Benefits
3.6
3.8
Senior Mgmt
4.1
3.8
Career Opps
👍 77% Recommend
👤 81% CEO Approval (Matt Curl)
👍 80% Recommend
👤 84% CEO Approval (Bret Taylor)
Culture Values
Apollo.io only
🌐 Remote-Friendly🎯 Direct Product Impact
Sierra only
💎 Strong Comp & Equity
Shared
🚀 Ship Fast & Iterate⚙️ Engineering-Driven🌱 Learning & Growth
Pros & Cons
Apollo.io
- Strong product-market fit — best-in-class sales intelligence platform
- Competitive compensation with RSUs, performance bonuses, and paid health insurance
- Some reports of leadership involvement in granular decisions and frequent pivots
- Work-life balance challenges under high-growth pressure
Sierra
- Elite founders with proven track records
- Strong equity at $10B valuation
- In-person-first culture
- Competitive intensity may not suit everyone
Bottom Line
Apollo.io
Choose Apollo.io if you want best-in-class sales intelligence with competitive comp — but leadership can be hands-on.
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
Apollo.io — 45 jobs
💼 Sales / GTM
16
💻 Engineering
9
📣 Marketing
4
👤 HR / People
3
📋 Product
3
📊 Data
1
🎨 Design
1
💰 Finance
1
⚖️ Legal
1
🎧 Support
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
Apollo.io scores 4.0/5.0 on Glassdoor with a 3.6 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: Ship Fast & Iterate, Engineering-Driven, Learning & Growth. Apollo.io also emphasizes Remote-Friendly, Direct Product Impact. Sierra also emphasizes Strong Comp & Equity.
On the hiring front, Apollo.io has 45 open roles and Sierra has 134 open roles.