Fireworks AI
Small (~100)
Glean
Large (~1,475)
Best For
Fireworks AI
Best for: Engineers who want to work with ex-Meta AI infrastructure engineers on LLM inference
Glean
Best for: AI engineers who want to work on enterprise search with ex-Google leadership and don't mind below-market base pay offset by strong equity upside
Ratings
Fireworks AIGlean
4.2
4.2
Overall
3.3
3.8
Work-Life Balance
4.3
4.3
Culture & Values
4.2
4.2
Comp & Benefits
4.2
4.0
Senior Mgmt
4.0
4.0
Career Opps
👍 84% Recommend
👤 88% CEO Approval (Arvind Jain)
Culture Values
Fireworks AI only
🧩 Wears Many Hats🎧 Deep Work / Low Meetings
Glean only
🎯 Direct Product Impact🪟 Transparent
Shared
⚙️ Engineering-Driven🚀 Ship Fast & Iterate🌱 Learning & Growth
Pros & Cons
Fireworks AI
- World-class team of ex-Meta AI infrastructure engineers — technically very strong peers
- Working on LLM inference optimization which is one of the hottest areas in AI infrastructure
- Early-stage startup intensity with long hours expected and high performance bar
- Small team and rapidly evolving product means less structure, process, and career laddering
Glean
- World-class AI talent — learn from ex-Google leadership on cutting-edge enterprise search
- Transparent collaborative culture with strong career growth
- Below-market compensation — comp rated only 3.6/5
- Sales org has high churn and toxicity problems in EMEA and US
Bottom Line
Fireworks AI
Choose Fireworks AI if you want to work with ex-Meta AI infrastructure engineers on cutting-edge LLM inference — but expect early-stage startup intensity and limited structure.
Glean
Top-tier AI engineering talent and explosive growth, but comp lags peers and the sales org has churn problems — the engineering side is the real draw.
Open Roles
Fireworks AI — 30 jobs
💻 Engineering
10
💼 Sales / GTM
4
⚙️ Operations
2
🎨 Design
1
👤 HR / People
1
📣 Marketing
1
🧠 ML / AI
1
📋 Product
1
Glean — 196 jobs
💼 Sales / GTM
68
💻 Engineering
42
📋 Product
16
📣 Marketing
10
👤 HR / People
8
🧠 ML / AI
6
🎨 Design
5
📊 Data
3
⚙️ Operations
3
Summary
Fireworks AI scores 4.2/5.0 on Glassdoor with a 3.3 work-life balance rating. Glean scores 4.2/5.0 overall with a 3.8 WLB. They’re tied on overall satisfaction.
Both companies share these culture values: Engineering-Driven, Ship Fast & Iterate, Learning & Growth. Fireworks AI also emphasizes Wears Many Hats, Deep Work / Low Meetings. Glean also emphasizes Direct Product Impact, Transparent.
On the hiring front, Fireworks AI has 30 open roles and Glean has 196 open roles.