Mercor
Small (~200)
MongoDB
Large (~5,500)
Best For
Mercor
Best for: Engineers who want to build AI hiring infrastructure at a $10B rocketship with extreme ownership and MIT-founder energy
MongoDB
Best for: Professionals interested in MongoDB
Ratings
MercorMongoDB
3.9
4.0
Overall
3.9
3.8
Work-Life Balance
3.6
4.1
Culture & Values
4.0
4.0
Comp & Benefits
3.5
3.8
Senior Mgmt
3.7
3.8
Career Opps
👍 74% Recommend
👤 82% CEO Approval (Brendan Foody)
👍 80% Recommend
👤 84% CEO Approval (CEO)
Culture Values
Mercor only
🚀 Ship Fast & Iterate🤝 Flat Hierarchy
MongoDB only
🔓 Open Source🌱 Learning & Growth🎯 Direct Product Impact
Shared
⚙️ Engineering-Driven💎 Strong Comp & Equity
Pros & Cons
Mercor
- Massive impact at an AI company growing at breakneck speed
- Top-tier compensation with strong equity at $10B valuation
- Intense 9/9/6 work schedule — long hours are the norm
- Work-life balance is a real sacrifice at this stage
MongoDB
- World-class enablement — best training programs many employees have encountered
- Competitive pay with strong equity, especially for senior roles
- No 401k match and culture has gotten more political at scale
- Work-life balance is team-dependent — some teams have long hours expectations
Bottom Line
Mercor
Choose Mercor if you want outsized impact on AI-era hiring at a tiny, fast-moving team — but the 9/9/6 schedule is real, and work-life balance is genuinely sacrificed for speed.
MongoDB
MongoDB — check Glassdoor for detailed reviews.
Open Roles
Mercor — 49 jobs
💻 Engineering
20
🧠 ML / AI
6
💼 Sales / GTM
5
👤 HR / People
3
📊 Data
2
📣 Marketing
2
📋 Product
2
🎨 Design
1
⚙️ Operations
1
MongoDB — 428 jobs
💼 Sales / GTM
171
💻 Engineering
133
📋 Product
32
📣 Marketing
14
⚙️ Operations
9
👤 HR / People
8
💰 Finance
6
🧠 ML / AI
4
📊 Data
2
Summary
Mercor scores 3.9/5.0 on Glassdoor with a 3.9 work-life balance rating. MongoDB scores 4.0/5.0 overall with a 3.8 WLB. That’s a 0.1-point gap on overall satisfaction.
Both companies share these culture values: Engineering-Driven, Strong Comp & Equity. Mercor also emphasizes Ship Fast & Iterate, Flat Hierarchy. MongoDB also emphasizes Open Source, Learning & Growth, Direct Product Impact.
On the hiring front, Mercor has 49 open roles and MongoDB has 428 open roles.