Mercury
Large (~1,300)
Writer
Mid (~400)
Best For
Mercury
Best for: Engineers who want product ownership and fast growth building startup banking infrastructure
Writer
Best for: Professionals interested in Writer
Ratings
MercuryWriter
4.3
3.5
Overall
3.8
2.7
Work-Life Balance
3.9
3.6
Culture & Values
4.0
3.5
Comp & Benefits
3.8
3.3
Senior Mgmt
3.9
3.3
Career Opps
👍 79% Recommend
👤 85% CEO Approval (Immad Akhund)
👍 70% Recommend
👤 74% CEO Approval (CEO)
Culture Values
Mercury only
🎯 Direct Product Impact🌱 Learning & Growth💎 Strong Comp & Equity🧩 Wears Many Hats
Writer only
🔓 Open Source
Shared
⚙️ Engineering-Driven🚀 Ship Fast & Iterate
Pros & Cons
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
Writer
- Real AI engineering with proprietary LLMs — not just wrapping OpenAI APIs
- Strong enterprise traction and visionary product direction
- Intense work culture with very high expectations and limited work-life balance
- Growing management layers creating organizational friction
Bottom Line
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.
Writer
Writer — check Glassdoor for detailed reviews.
Open Roles
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
Writer — 49 jobs
💻 Engineering
16
💼 Sales / GTM
12
🎨 Design
1
⚙️ Operations
1
📋 Product
1
Summary
Mercury scores 4.3/5.0 on Glassdoor with a 3.8 work-life balance rating. Writer scores 3.5/5.0 overall with a 2.7 WLB. That’s a 0.8-point gap on overall satisfaction.
Both companies share these culture values: Engineering-Driven, Ship Fast & Iterate. Mercury also emphasizes Direct Product Impact, Learning & Growth, Strong Comp & Equity, Wears Many Hats. Writer also emphasizes Open Source.
On the hiring front, Mercury has 70 open roles and Writer has 49 open roles.