Doctolib
Large (~3,500)
LangChain
Small (~230)
Best For
Doctolib
Best for: Engineers motivated by healthcare impact who want to build products improving medical access across Europe at a mission-driven company with a strong French tech identity
LangChain
Best for: AI engineers who want to shape the open-source LLM tooling ecosystem from inside a fast-moving startup
Ratings
DoctolibLangChain
3.7
4.6
Overall
3.7
4.0
Work-Life Balance
3.8
4.7
Culture & Values
3.7
4.6
Comp & Benefits
3.5
4.4
Senior Mgmt
3.5
4.4
Career Opps
👍 74% Recommend
👤 78% CEO Approval (Stanislas Niox-Chateau)
👍 92% Recommend
👤 95% CEO Approval (Harrison Chase)
Culture Values
Doctolib only
💜 Mission-Driven🌱 Learning & Growth
LangChain only
🔓 Open Source⚙️ Engineering-Driven🌐 Remote-Friendly🧩 Wears Many Hats🤝 Flat Hierarchy
Shared
🎯 Direct Product Impact🚀 Ship Fast & Iterate
Pros & Cons
Doctolib
- Mission-driven colleagues who genuinely care about improving healthcare access
- Strong growth opportunities with flexible remote policy and decent benefits
- Management can be heavy-handed — uses company principles as weapons against feedback
- French-centric culture makes it harder for non-French speakers to advance
LangChain
- Open-source DNA with massive community — your work impacts millions of developers
- Small team with outsized impact — ship fast with high autonomy
- Very early-stage startup — limited structure and processes
- Rapidly scaling which brings growing pains and role ambiguity
Bottom Line
Doctolib
Genuine social mission (digitizing healthcare access for millions) with a fast-shipping culture, but at 3,500 people reviews cite organizational change fatigue and management inconsistency.
LangChain
Open-source DNA with massive developer community impact and high autonomy — but very early-stage with limited structure and rapidly shifting priorities.
Open Roles
Doctolib — 248 jobs
💼 Sales / GTM
86
💻 Engineering
44
📣 Marketing
13
📋 Product
8
📊 Data
6
👤 HR / People
6
🧠 ML / AI
5
🎨 Design
2
⚖️ Legal
2
⚙️ Operations
2
🎧 Support
2
💰 Finance
1
LangChain — 87 jobs
💻 Engineering
45
💼 Sales / GTM
29
📣 Marketing
6
👤 HR / People
2
⚙️ Operations
2
🧠 ML / AI
1
📋 Product
1
Summary
Doctolib scores 3.7/5.0 on Glassdoor with a 3.7 work-life balance rating. LangChain scores 4.6/5.0 overall with a 4.0 WLB. That’s a 0.9-point gap on overall satisfaction.
Both companies share these culture values: Direct Product Impact, Ship Fast & Iterate. Doctolib also emphasizes Mission-Driven, Learning & Growth. LangChain also emphasizes Open Source, Engineering-Driven, Remote-Friendly, Wears Many Hats, Flat Hierarchy.
On the hiring front, Doctolib has 248 open roles and LangChain has 87 open roles.