Rerun

Open-source data layer for Physical AI: an SDK to log, visualize, query, and stream multimodal robotics and computer-vision data (C++, Python, Rust). Founded 2022, Stockholm. Raised ~18.6M EUR.

Services Developer Tools / Robotics / Physical AI / Open Source
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Stockholm, Sweden (Remote-friendly for engineering; role-dependent) HQ
11-50 company size
2022 founded

What is Rerun?

Rerun builds open-source data infrastructure for Physical AI, the AI that perceives and acts in the real world, such as robots and computer-vision systems. Its core product is an SDK and viewer that let engineers and researchers log, visualize, query, and stream multimodal data that changes over time: camera images, depth maps, point clouds, 3D poses, sensor readings, and more, so they can verify, debug, and demo what a system is actually seeing and doing. The SDK ships with C++, Python, and Rust bindings, and over its first couple of years Rerun became the most popular open-source framework for logging and visualizing multimodal data, with a large following among robotics and computer-vision developers. The company is expanding beyond visualization into a full data layer for Physical AI, covering querying, transformation, and preparing multi-rate multimodal data for training. Rerun was founded in 2022 in Stockholm by Nikolaus West (CEO), a Stanford-trained computer-vision expert and second-time founder; Emil Ernerfeldt (CTO), a gaming-industry veteran and the creator of the popular egui Rust GUI framework; and Moritz Schiebold. It has raised roughly 18.6M EUR in total, headlined by a seed round led by Point Nine with participation from Costanoa, Sunflower Capital, Seedcamp, and angels including Guillermo Rauch, Wes McKinney, Eric Jang, and Oliver Cameron. It is an early-stage company, so treat headcount as small.

Mission & values

Build the open data layer for Physical AI, so anyone working on robots and computer vision can log, visualize, query, and train on their multimodal data with great tools.

Qualifications

Rerun is an early-stage, deeply technical open-source company, so hiring centers on strong systems and graphics engineering: Rust (the core is Rust), C++, and Python; real-time rendering and visualization; data systems and streaming; and the SDK/API surface across languages. It also hires in developer relations and documentation (its community is central), applied roles close to robotics and computer vision, product, and design, plus early go-to-market as it commercializes on top of the open source. Application flow lives at rerun.io (careers) and its GitHub and LinkedIn pages. The strongest signal is exactly what you would expect for a beloved developer tool: real open-source contribution and hands-on experience with Rust, graphics/rendering, robotics or CV data, or building SDKs and data infrastructure. It is Stockholm-based; engineering roles are often remote-friendly, but eligibility and time-zone or EU considerations vary by role, so check each posting. Early hires are broad in scope, and equity is a meaningful part of compensation.

Leadership

N

Nikolaus West

Co-Founder & Chief Executive Officer

Co-founded Rerun in 2022 and leads it as CEO. A Stanford-trained computer-vision expert and second-time founder, focused on the data infrastructure behind Physical AI.

E

Emil Ernerfeldt

Co-Founder & Chief Technology Officer

Co-founded Rerun in 2022 and leads technology. A gaming-industry veteran focused on fast tools, and the creator of egui, a widely-used Rust GUI framework.

M

Moritz Schiebold

Co-Founder

Co-founded Rerun in 2022 alongside Nikolaus West and Emil Ernerfeldt.

Hiring process

  1. 1

    Apply at rerun.io careers

    Browse systems/Rust/graphics engineering, developer relations, product, and early go-to-market roles and submit through the Rerun site, GitHub, or LinkedIn.

  2. 2

    Recruiter or founder screen

    For an early-stage team, calls often involve a founder. Confirms role fit, level, location and remote eligibility, and expectations.

    About 7 days

  3. 3

    Technical deep-dive

    Engineering: coding and a discussion of Rust, rendering/visualization, or data systems, often with a project or take-home. Developer relations: a technical-content or community exercise.

    About 10 days

  4. 4

    Team interviews

    Cross-functional conversations on technical depth, open-source sensibility, and fit for a fast-moving early-stage company.

    About 7 days

  5. 5

    Offer with equity

    Offer with base plus meaningful early-stage equity, aligned to role and location.

    About 5 days

Funding

StageSeed
Total raised$20,000,000
Investors
Point Nine Capital Costanoa Ventures Sunflower Capital Seedcamp

Awards & recognition

  • Most popular open-source framework for logging and visualizing multimodal data · 2026

    Rerun

  • ~18.6M EUR raised, led by Point Nine · 2025

    Rerun

Company information

  • Industry: Developer Tools / Robotics / Physical AI / Open Source
  • Location: Stockholm, Sweden (Remote-friendly for engineering; role-dependent)
  • Founded: 2022
  • Company size: 11-50
  • Website: rerun.io ↗
  • LinkedIn: Company page ↗
  • X / Twitter: Profile ↗

Frequently asked questions

What is Rerun?
Rerun builds open-source data infrastructure for Physical AI (robotics and computer vision). Its SDK and viewer let engineers log, visualize, query, and stream multimodal, time-varying data (images, depth, point clouds, 3D poses, sensors) to verify, debug, and demo systems, with C++, Python, and Rust bindings.
Who founded Rerun?
Nikolaus West (CEO, a Stanford-trained computer-vision expert and second-time founder), Emil Ernerfeldt (CTO, gaming veteran and creator of the egui Rust GUI framework), and Moritz Schiebold, in 2022 in Stockholm.
Is Rerun open source?
Yes. Rerun has become the most popular open-source framework for logging and visualizing multimodal data, with a large developer community. It is building a commercial data layer on top of the open-source foundation.
How much has Rerun raised?
Roughly 18.6M EUR in total, headlined by a seed round led by Point Nine, with Costanoa, Sunflower Capital, Seedcamp, and angels including Guillermo Rauch, Wes McKinney, Eric Jang, and Oliver Cameron.
What engineers does Rerun hire?
Strong systems and graphics engineers: Rust (the core language), C++, and Python, real-time rendering and visualization, and data systems and streaming, plus developer relations. Open-source contribution and hands-on robotics/CV or SDK experience are strong signals.
Is Rerun remote?
It is Stockholm-based, and engineering roles are often remote-friendly, though eligibility and time-zone or EU considerations vary by role. Check each posting for the specific requirement.

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