Celonis
Large (~3,800)
Sierra
Large (~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
Sierra
Best for: Builders who want to work with proven Salesforce and Google leadership on enterprise AI agents
Ratings
CelonisSierra
3.8
4.0
Overall
3.8
3.5
Work-Life Balance
3.9
4.1
Culture & Values
3.8
4.0
Comp & Benefits
3.6
3.8
Senior Mgmt
3.6
3.8
Career Opps
👍 76% Recommend
👤 80% CEO Approval (Bastian Nominacher)
👍 80% Recommend
👤 84% CEO Approval (Bret Taylor)
Culture Values
Celonis only
🎯 Direct Product Impact
Sierra only
⚙️ Engineering-Driven
Shared
🌱 Learning & Growth💎 Strong Comp & Equity🚀 Ship Fast & Iterate
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
Sierra
- Elite founders with proven track records
- Strong equity at $10B valuation
- In-person-first culture
- Competitive intensity may not suit everyone
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.
Sierra
Choose Sierra if you want elite founders (Bret Taylor, Clay Bavor) and strong equity at a $10B enterprise AI company — but it's in-person-first and the competitive intensity won't suit everyone.
Open Roles
Celonis — 175 jobs
💻 Engineering
68
💼 Sales / GTM
39
📋 Product
5
📊 Data
3
🎧 Support
3
💰 Finance
2
🧠 ML / AI
2
📣 Marketing
1
⚙️ Operations
1
Sierra — 134 jobs
💻 Engineering
42
💼 Sales / GTM
27
📋 Product
15
👤 HR / People
7
🎨 Design
5
⚖️ Legal
5
📣 Marketing
5
⚙️ Operations
5
📊 Data
2
💰 Finance
1
Summary
Celonis scores 3.8/5.0 on Glassdoor with a 3.8 work-life balance rating. Sierra scores 4.0/5.0 overall with a 3.5 WLB. That’s a 0.2-point gap on overall satisfaction.
Both companies share these culture values: Learning & Growth, Strong Comp & Equity, Ship Fast & Iterate. Celonis also emphasizes Direct Product Impact. Sierra also emphasizes Engineering-Driven.
On the hiring front, Celonis has 175 open roles and Sierra has 134 open roles.