
FlexAI delivers Workload as a Service (WaaS), ensuring AI workloads run optimally—anytime, anywhere. Our intelligent orchestration eliminates inefficiencies by dynamically placing workloads on the best compute without vendor lock-in. With FlexAI, businesses accelerate AI training, fine-tuning, and inference while reducing costs and complexity.

FlexAI delivers Workload as a Service (WaaS), ensuring AI workloads run optimally—anytime, anywhere. Our intelligent orchestration eliminates inefficiencies by dynamically placing workloads on the best compute without vendor lock-in. With FlexAI, businesses accelerate AI training, fine-tuning, and inference while reducing costs and complexity.
What they do: Workload-as-a-Service (WaaS) orchestration for AI training, fine-tuning, and inference across cloud, on-prem and hybrid environments
HQ: Paris, France
Founders / leadership: Brijesh Tripathi (Co-founder & CEO), Dali Kilani (Co-founder & CTO)
Funding: Seed — €28.5M (~$30M) announced April 2024
Employee size: Approximately 61 employees
AI infrastructure orchestration and optimization for GPU-backed workloads
2023
Technology, Information and Internet
€28.5M (~$30M)
Seed announced at exit from stealth; multiple participating investors reported
“Seed led by specialized AI and European VCs (Alpha Intelligence Capital, Elaia Partners, Heartcore Capital)”
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FlexAI is at the forefront of revolutionizing AI computing by reengineering infrastructure at the system level. Our groundbreaking architecture, combined with sophisticated software intelligence, abstraction, and an orchestration layer, allows developers to leverage a diverse array of compute, resulting in efficient, more reliable computing at a fraction of the cost.
Founded by Brijesh Tripathi and Dali Kilani, who bring experience from Nvidia, Apple, Tesla, Intel, Lifen, and Zoox, FlexAI is not just building a product – we’re shaping the future of AI. Our teams are strategically distributed across Paris, Silicon Valley, and Bangalore, united by a shared mission: to deliver more compute with less complexity.
Position Overview:
FlexAI is seeking a talented and driven AI Stack Engineer to join our innovative team. In this role, you will be responsible for improving the reliability, scalability, and performance of our custom AI software stack, with a focus on PyTorch optimization and model deployment.
Location: Paris
Department: R&D SW
Role: AI Stack Engineer
Remote Status: Hybrid
Employment Type: Full-time
What you’ll do:
Improve LLM Training Reliability and Elasticity:
Optimize Model Packaging and Production Runtime:
Develop and Maintain Internal Tools for Model Training:
What you’ll need to be successful:
Bonus Points:
What we offer:
Offices:
Our teams are strategically distributed across three continents - Europe, North America, and Asia—united by a shared mission: to deliver more compute with less complexity.
At FlexAI, we believe diverse teams are the most innovative teams. We’re committed to creating an inclusive environment where everyone feels valued, and we proudly offer equal opportunities regardless of gender, sexual orientation, origin, disabilities, veteran status, or any other facets of your identity that make you uniquely you.