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Zibra Labs

HPC for Quant Trading Firms running backtesting at scale.

Quant research is generating candidate strategies orders of magnitude faster than backtesting infrastructure can evaluate them. AI has further accelerated alpha research from a handful of signals per quarter to hundreds per day. The bottleneck has moved from researcher time to compute throughput. We're building large HPC clusters (100 - 50,000 nodes) that can run up to 6.4M tasks in parallel across multiple cloud providers on spot instances. Our goal is to make backtesting strategies simple, fast, and cheap at scale.
Active Founders
Ibrahim Rabbani
Ibrahim Rabbani
Founder and CEO
Former tech-lead of Ray. Previously building databases at LinkedIn. I've built systems that run on hundreds of thousands of machines and serve over a billion people.
Zac Policzer
Zac Policzer
Founder and CTO
After a career making software that serves over a billion people, with a background primarily in large databases, I'm now building HPC clusters at Zibra Labs The past two years I've been focused on what the next generation of AI data center software looks like — and working to shape that future. I've been fortunate to do much of this in open source, which I'm deeply passionate about. Talk to me about databases, Mahjong, guitars, or weird horror movies. I'm currently building Zibra Labs.
Company Launches
Zibra Labs: HPC for Quant Trading Firms Running Backtesting at Scale
See original launch post

Credentials

We’ve spent years working together building large scale distributed systems that run on hundreds of thousands of machines and serve billions of users. Every time you leverage your network for a warm intro on LinkedIn, you use three databases that we’ve built: Venice, Liquid, and Espresso.

After LinkedIn, we were tech-leads of Ray, the leading open-source compute platform used by companies such as xAI, Cursor, Bridgewater, P72, Man Group, Two Sigma, and others. Ray has ~12M weekly downloads and is part of the PyTorch Foundation.

Product

https://www.youtube.com/watch?v=C6tl8Fr8t2I

We’re building large scale high performance computing (HPC) clusters for quantitative trading firms to run parallel simulation workloads such as backtesting.

The scale we’re targeting is

  • 100 to 50,000 nodes of mixed hardware (CPUs and GPUs) on hyperscalers and neoclouds.
  • up to 5,000,000 parallel tasks.
  • spot instances for cheaper compute across multiple availability zones, hyperscalers, and neoclouds.
  • < 50ms overhead for task dispatch and scheduling.
  • run the compute in your cloud or on-prem environment to keep your alpha secure.

Our goal is to make testing trading strategies fast, cheap, and reliable.

Vision

We know that existing solutions do not handle this scale, do not have first-class support for spot-instances, and will not match our low-latency and high throughput performance.

Our technology generalizes to other large-scale compute workloads such as

  1. post-training and reinforcement learning (RL) for frontier and applied AI labs
  2. massively parallel robotics simulation and sim-to-real training for robot foundation model teams
  3. virtual screening and molecular dynamics for techbio and pharma R&D
  4. scientific simulation (CFD, climate, seismic, FEA) for HPC teams looking to move beyond MPI and SLURM.

Ask

Reach out if you

  1. Are running simulation workloads that require lots of computation at a quant trading firm.
  2. If you need HPC for a different use-case.
  3. Want to grab a beer and talk about distributed systems or HPC.

Cheers!

Ibrahim and Zac

Zibra Labs
Founded:2026
Batch:Spring 2026
Team Size:2
Status:
Active
Location:San Francisco
Primary Partner:Tom Blomfield