Brex
Large (~1,600)
Mercor
Small (~200)
Best For
Brex
Best for: Engineers who want to build AI-powered fintech at massive scale with smart colleagues
Mercor
Best for: Engineers who want to build AI hiring infrastructure at a $10B rocketship with extreme ownership and MIT-founder energy
Ratings
BrexMercor
4.0
3.9
Overall
3.9
3.9
Work-Life Balance
3.8
3.6
Culture & Values
4.0
4.0
Comp & Benefits
3.5
3.5
Senior Mgmt
3.6
3.7
Career Opps
👍 77% Recommend
👤 71% CEO Approval (Pedro Franceschi)
👍 74% Recommend
👤 82% CEO Approval (Brendan Foody)
Culture Values
Brex only
🎯 Direct Product Impact🌱 Learning & Growth🪟 Transparent
Mercor only
🤝 Flat Hierarchy💎 Strong Comp & Equity
Shared
🚀 Ship Fast & Iterate⚙️ Engineering-Driven
Pros & Cons
Brex
- Innovation-driven culture with incredibly smart, passionate, and supportive colleagues
- Strong benefits and time off actively encouraged with flexible scheduling
- Culture of overworking — many departments understaffed relative to workload expectations
- Multiple rounds of layoffs in recent years have created uncertainty and morale challenges
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
Bottom Line
Brex
Choose Brex if you want to build AI-powered fintech at massive scale with smart colleagues — but expect intense workloads and some organizational instability from recent layoffs.
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.
Open Roles
Brex — 235 jobs
💼 Sales / GTM
72
💻 Engineering
49
📋 Product
18
🎨 Design
15
📣 Marketing
14
👤 HR / People
13
📊 Data
10
⚖️ Legal
6
💰 Finance
3
⚙️ Operations
3
🎧 Support
2
Mercor — 49 jobs
💻 Engineering
20
🧠 ML / AI
6
💼 Sales / GTM
5
👤 HR / People
3
📊 Data
2
📣 Marketing
2
📋 Product
2
🎨 Design
1
⚙️ Operations
1
Summary
Brex scores 4.0/5.0 on Glassdoor with a 3.9 work-life balance rating. Mercor scores 3.9/5.0 overall with a 3.9 WLB. That’s a 0.1-point gap on overall satisfaction.
Both companies share these culture values: Ship Fast & Iterate, Engineering-Driven. Brex also emphasizes Direct Product Impact, Learning & Growth, Transparent. Mercor also emphasizes Flat Hierarchy, Strong Comp & Equity.
On the hiring front, Brex has 235 open roles and Mercor has 49 open roles.