Celonis
Large (~3,800)
OpenAI
Large (~3,500)
Best For
Celonis
Best for: Enterprise software engineers and data scientists who want to work on process mining at scale with solid equity packages and a clear market leader position
OpenAI
Best for: Engineers who want to build frontier AI models at the company defining the industry, with elite compensation
Ratings
CelonisOpenAI
3.8
4.5
Overall
3.8
3.6
Work-Life Balance
3.9
4.6
Culture & Values
3.8
4.5
Comp & Benefits
3.6
4.3
Senior Mgmt
3.6
4.3
Career Opps
👍 76% Recommend
👤 80% CEO Approval (Bastian Nominacher)
👍 90% Recommend
👤 95% CEO Approval (Sam Altman)
Culture Values
Celonis only
No unique values
OpenAI only
⚙️ Engineering-Driven
Shared
🌱 Learning & Growth💎 Strong Comp & Equity🚀 Ship Fast & Iterate🎯 Direct Product Impact
Pros & Cons
Celonis
- Strong learning and development opportunities with excellent internal mobility
- Great team culture with supportive colleagues and mentorship from leadership
- Below-market compensation compared to other tech companies of similar size
- Frequent organizational changes and restructuring with poor communication from leadership
OpenAI
- Cutting-edge frontier AI research with world-class colleagues
- Elite compensation — top-tier TC and equity packages
- High-intensity environment — long hours and intense pace are the norm
- Internal politics and rapid org changes as the company scales
Bottom Line
Celonis
Process mining market leader with decent equity and a learning culture, but at 3,800+ people expect real corporate layers — best for those who want large-enterprise scale over startup agility.
OpenAI
High-intensity, mission-driven culture with world-class colleagues and top-tier comp — but expect long hours, rapid org changes, and internal politics as the company scales.
Open Roles
Celonis — 165 jobs
💻 Engineering
66
💼 Sales / GTM
48
📋 Product
3
📊 Data
2
💰 Finance
1
👤 HR / People
1
📣 Marketing
1
⚙️ Operations
1
🎧 Support
1
OpenAI — 638 jobs
💻 Engineering
299
💼 Sales / GTM
56
🧠 ML / AI
31
📋 Product
31
📊 Data
28
📣 Marketing
24
⚙️ Operations
17
👤 HR / People
14
🎨 Design
10
⚖️ Legal
10
🎧 Support
5
💰 Finance
3
Summary
Celonis scores 3.8/5.0 on Glassdoor with a 3.8 work-life balance rating. OpenAI scores 4.5/5.0 overall with a 3.6 WLB. That’s a 0.7-point gap on overall satisfaction.
Both companies share these culture values: Learning & Growth, Strong Comp & Equity, Ship Fast & Iterate, Direct Product Impact. OpenAI also emphasizes Engineering-Driven.
On the hiring front, Celonis has 165 open roles and OpenAI has 638 open roles.