We’re hiring!

Hi! My name is Emil, and I’m a developer with a passion for Rust, dev tools, user interfaces, and climbing. I’m also the creator and maintainer of a couple of open source projects, including egui.

A few months ago, two friends and I co-founded Rerun. We are building a brand new kind of visualization tool for companies working in computer vision. I am extremely excited by this - not only is it a fun thing to build, I also believe it will have a huge, positive impact on the world.

We’ve raised some money, and now we are looking to hire a founding team of great developers to build the first version of our product.

Rerun’s mission

I met my co-founders Niko and Moritz at a computer vision and 3D scanning company where we wrote some really cool in-house visualization tools. We used these tools to quickly iterate when prototyping new algorithms, investigating weird corner cases, and to troubleshoot our deployed scanners. These tools were critical to our success, but took a lot of effort to write. We’ve since learned that all successful computer vision companies build their own in-house visualization tools. This costs them time and effort, and produces tools that aren’t as good as they should be. We want to change that!

20 years ago, if you had an idea for a game, you had to first write a game engine. This stopped most people, and slowed down the rest. Today there are reusable game engines such as Unity and Unreal, and there has been an explosion of great games coming from thousands of studios and indie developers. At Rerun, we are going to write a reusable visualization toolbox for the entire computer vision industry.

Computer vision is going to diagnose illnesses, enable blind people to read street signs, replace insecticides with bug-zapping lasers, power autonomous drones that do repairs in remote and dangerous areas, and on and on. Computer vision is on the cusp of revolutionizing the world, and Rerun will be at the heart of it.

What we are building

A developer starts by using our logging SDK (for C++, Python, Rust, …) to log rich data as easy as they would log text. Rich data includes images, meshes, point clouds, annotations, audio, time series, and so on.

The logs are transformed and cached by a server which sits between the logging SDK and our viewer.

The viewer is an app that can run both natively and in the browser. It can view the logs live, but also recordings. You can scrub time back and forth and compare different runs, and you can customize the viewer to suit your needs.

For the first year we will be working closely with a few select customers, and we will select the customers that are doing the coolest things!

Working at Rerun

We are going to be a small, tight team, working together to build a great product of the highest quality. We believe in being helpful, curious, honest, and never settling for something less than great.

We are very ambitious. This will be difficult, so you need to be good at your job.

We are looking to hire experienced developers who can make their own decisions while also being part of a collaborative team. We want to create a workplace where you can do your life’s best work and learn new things, and also have a family and hobbies.

We are a distributed company with a remote-first culture. The founders are based in Stockholm, Sweden. We expect everyone on the team to be available for discussions and meetings every weekday 13-17 CET. We plan to get the entire team together for a full week once a quarter.

We will pay you a competitive salary with six weeks of paid vacation. You will also be offered an options/equity package. We will pay for whatever hardware and software you need to do your job. You can of course use the OS and editor you feel most comfortable in.

What are the skills we are looking for?

We are creating tools that are extremely easy to use, that look beautiful, and that run butter smooth. We want Rerun to become the kind of tool that you would switch jobs just to be able to use.

We are looking for people who enjoy being helpful to colleagues, customers, and to the open source community.

We are an open core company, so most of what you do the first few years will be open source. You will be using a lot of open source libraries and should be able and willing to contribute to them via issues and PR:s. Any open source experience is a plus.

We expect you to write clean, readable code, intuitive API:s, and good documentation. Communication skills are essential!

We are building everything in Rust, so you should either know some Rust or have the desire and ability to learn it. If you already know C++ or C, you should be fine. Why Rust? Rust is modern and fast, but most importantly: it runs anywhere. We can have the same code run on desktop, the cloud, on edge devices and in the browser.

It’s great if you have a sense of how images and audio are represented by a computer and a good grasp on linear algebra and statistics.

Any experience building dev-tools is a big plus.

We’re building tools for the computer vision industry, including robotics, drones and self-driving cars. Any experience in relevant fields is a plus, but not a requirement. Knowledge of ROS is also a plus.

We are also very interested in different perspectives, so if you have a different background or experiences than the founding team, you should also apply!

Finally, we want those that have a desire to make a deep, positive impact on the world.


There are a few roles we need to fill, with a lot of overlap between them. You do not need to fit snugly into a role to apply! You also don’t need to tick all of the boxes - you will perhaps bring other talent to the table which we haven’t foreseen the need for!

We are building a UI that is intuitive, beautiful, and responsive. Any experience building editors (video, audio, CAD, …) is a big plus. The UI will be written in Rust. It will be compiled to WASM and run in a browser, so knowledge of web programming is also a plus.

The viewer needs to be able to scroll through and filter big datasets in real-time, so we are looking for people who know how to write fast code. You should have a good sense of how a CPU works. It is a big plus if you have built game engines or other high-performance real-time apps, as is any experience of threading or SIMD.

We need a graphics engineer who can build a renderer that can run in a browser and also leverage the full performance of the GPU on the desktop. This means the graphics must not only look good, it must also scale. We will likely write the renderer on top of wgpu.

We are writing a high-performance server that needs to index and cache large amounts of visualization data. Experience with databases is a plus here, as is knowledge of tokio or other async code.

We are building a Python SDK for logging visualization data. For this, we want someone with experience building quality Python libraries, preferably someone with experience with OpenCV, PyTorch, Tensorflow, and other Python libraries that we are likely to integrate with.

We are also building a C++ SDK, and here we want someone that feels comfortable with building a C++ library with all that entails. Our C++ SDK needs to be able to run on edge devices too, so experience with embedded software is a plus. Both the Python and C++ SDK:s will be interfacing with Rust over FFI.

Join us!

You can read more about or roles on our jobs page. Even if no single role fits you perfectly, don’t worry - just apply for the role that is closest!

We’re looking forward to hearing from you! ❤️

edited on 2022-07-05 to reflect that we now accept remote candidates

Starting rerun

My career-long obsession with computer vision started with a long distance relationship back as an undergraduate. Over countless hours on Skype, we missed looking each other in the eyes. Because the camera is outside the screen, you always look just past each other. I figured it should be solvable with some math and code, so I decided to learn computer vision to fix it - turns out that was much harder than I thought. I’ve been hooked on solving problems with computer vision ever since.

More than a decade later I’ve started Rerun to build the core tools that are missing for computer vision teams to make their products successful in the physical world. My co-founders are two of the most amazing people I know, both old colleagues and friends, Moritz Schiebold and Emil Ernerfeldt. At Rerun we’re building visualization infrastructure for computer vision in the physical world. AI and computer vision has an incredible potential to improve life on earth and beyond. We believe the deployment of this technology needs to happen much much faster.

Three smiling men posing for a portrait

In 2012 as I was taking Stanford’s Introduction to Computer Vision class with Fei-Fei Li, I had mixed emotions. My mind was opening to the incredible possibilities that computer vision could unlock if it worked, but I also found that in practice it mostly didn’t.

After graduation I joined a 3D body-scanning startup called Volumental, right at the top of the 3D hype cycle. Most of that batch of 3D computer vision startups folded or got acqui-hired, but Volumental persevered. Moritz was the CEO back then and ran a tight ship. We made it through sheer determination to stay alive, an unreasonably strong tech team, and critically to this story, fantastic tooling.

In the early days, we were hand coding each visualization. Doing so was costly in both effort and code complexity so we did as little as we could get away with. What we didn’t know yet was how much everything we didn’t see slowed us down.

When Emil joined us from the gaming industry, he brought a critical–and very different– perspective and skillset. He would start out building an interactive app that visualized everything before touching the actual problem. Visualization Driven Development if you will. Because most of us weren’t strong graphics programmers, Emil built a framework that made it dead simple to build these apps by just providing the data. The increased iteration speed this gave us was key to shipping a product that actually worked, years before any viable competitor, and clearly winning that market.

Think about the map a self-driving car is building: it shows you where the car thinks it is relative to all other objects. You can just look at that and immediately understand how the car’s software is reasoning. You can also quickly understand where it might be wrong. While engineers need more detail, customers and the broader team also need this understanding.

A common misconception is that the rise of deep learning in computer vision makes visualization less important, since models are trained end-to-end and are effectively black boxes. In fact, the opposite is true. Powerful deep learning models make vastly more problems feasible to solve. For all but the simplest applications in the physical world, these models are just components of larger systems. More powerful models also enable more complex behavior that those building the products need to understand. Visualization for computer vision is becoming significantly more important.

Companies like Scale.ai, Weights & Biases, and Hugging Face have made deep learning easier by tackling dataset labeling, experiment tracking, and using pre-trained models. Unfortunately, the toolset for rapid data capture and visualization that was so critical for Volumental, still isn’t broadly available. Every computer vision company building for the physical world currently needs to build it in-house. Many make due with ineffective tools because of the high cost of development. We’re fixing that.

Product screenshot

Over the past decade computer vision research has progressed faster than anyone could have imagined. At the same time, real world problems haven’t been solved at nearly the same rate. The expected revolutions in fields like autonomous vehicles, agriculture, manufacturing, augmented reality, and medical imaging are all behind schedule. With the right tools for iterating on these products quickly, we can speed up that deployment by orders of magnitude. More projects will get off the ground and big projects will go faster.

Getting this right is a huge undertaking and to get started we’ve just raised a $3.2M pre-seed round from Costanoa Ventures, Seedcamp, and amazing angels from all over computer vision. I couldn’t be more excited for this opportunity to help our field truly improve life on earth over the decade ahead!