Mercor
Small (~200)
Mercury
Large (~1,300)
Best For
Mercor
Best for: Engineers who want to build AI hiring infrastructure at a $10B rocketship with extreme ownership and MIT-founder energy
Mercury
Best for: Engineers who want product ownership and fast growth building startup banking infrastructure
Ratings
MercorMercury
3.9
4.3
Overall
3.9
3.8
Work-Life Balance
3.6
3.9
Culture & Values
4.0
4.0
Comp & Benefits
3.5
3.8
Senior Mgmt
3.7
3.9
Career Opps
👍 74% Recommend
👤 82% CEO Approval (Brendan Foody)
👍 79% Recommend
👤 85% CEO Approval (Immad Akhund)
Culture Values
Mercor only
🤝 Flat Hierarchy
Mercury only
🎯 Direct Product Impact🌱 Learning & Growth🧩 Wears Many Hats
Shared
🚀 Ship Fast & Iterate⚙️ 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
Mercury
- Strong talent density with smart, motivated teammates and genuine autonomy and ownership
- Great Place to Work certified — product-first mindset with meaningful scope for every engineer
- Still figuring out how to scale processes — expect some ambiguity and shifting priorities
- Work-life balance rated 3.8/5 — periods of higher intensity during rapid growth phases
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.
Mercury
Choose Mercury if you want product ownership, fast growth, and to build banking infrastructure for startups — but expect growing pains and occasionally intense workloads.
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
Mercury — 70 jobs
💻 Engineering
15
💼 Sales / GTM
13
👤 HR / People
4
📋 Product
4
🎨 Design
3
⚖️ Legal
3
⚙️ Operations
3
📊 Data
2
💰 Finance
2
📣 Marketing
2
🧠 ML / AI
1
🎧 Support
1
Summary
Mercor scores 3.9/5.0 on Glassdoor with a 3.9 work-life balance rating. Mercury scores 4.3/5.0 overall with a 3.8 WLB. That’s a 0.4-point gap on overall satisfaction.
Both companies share these culture values: Ship Fast & Iterate, Engineering-Driven, Strong Comp & Equity. Mercor also emphasizes Flat Hierarchy. Mercury also emphasizes Direct Product Impact, Learning & Growth, Wears Many Hats.
On the hiring front, Mercor has 49 open roles and Mercury has 70 open roles.