Fireworks AI
Small (~100)
Modal
Small (~110)
Best For
Fireworks AI
Best for: Engineers who want to work with ex-Meta AI infrastructure engineers on LLM inference
Modal
Best for: Systems engineers who want to build developer-loved cloud infrastructure with elite teammates
Ratings
Fireworks AIModal
4.2
4.0
Overall
3.3
3.8
Work-Life Balance
4.3
4.2
Culture & Values
4.2
3.8
Comp & Benefits
4.2
4.0
Senior Mgmt
4.0
3.5
Career Opps
👍 82% Recommend
👤 88% CEO Approval (Erik Bernhardsson)
Culture Values
Fireworks AI only
🌱 Learning & Growth
Modal only
🔓 Open Source🎯 Direct Product Impact
Shared
⚙️ Engineering-Driven🚀 Ship Fast & Iterate🧩 Wears Many Hats🎧 Deep Work / Low Meetings
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
Modal
- World-class engineering team — includes creators of Luigi, Seaborn, and olympiad medalists
- High-impact product with 50x revenue growth — developers widely praise the platform
- Early-stage startup dynamics — roles shift quickly, requires high self-direction
- Limited HR infrastructure — benefits and career ladders still being developed
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.
Modal
Choose Modal if you want world-class engineering peers and 50x revenue growth — but expect early-stage startup dynamics.
Open Roles
Fireworks AI — 28 jobs
💻 Engineering
9
💼 Sales / GTM
4
⚙️ Operations
2
👤 HR / People
1
⚖️ Legal
1
📣 Marketing
1
🧠 ML / AI
1
📋 Product
1
Modal — 27 jobs
💻 Engineering
12
👤 HR / People
3
💼 Sales / GTM
3
📣 Marketing
2
🧠 ML / AI
2
💰 Finance
1
⚙️ Operations
1
Summary
Fireworks AI scores 4.2/5.0 on Glassdoor with a 3.3 work-life balance rating. Modal scores 4.0/5.0 overall with a 3.8 WLB. That’s a 0.2-point gap on overall satisfaction.
Both companies share these culture values: Engineering-Driven, Ship Fast & Iterate, Wears Many Hats, Deep Work / Low Meetings. Fireworks AI also emphasizes Learning & Growth. Modal also emphasizes Open Source, Direct Product Impact.
On the hiring front, Fireworks AI has 28 open roles and Modal has 27 open roles.