About Replay
Learn where Replay is right now and where we are going next. Find out about our values. Meet the team and discover opportunities to join us on our journey.
Our Belief
Replay here and now
We believe people understand what they can see, and if you cannot see what your software is doing, you cannot understand it. With Replay, we are making software easier to understand whether you are writing your first application, or challenging what’s possible.
Great software development isn’t about 10x more output. It’s about 10x more insight, insight derived from being able to visualize, communicate, and collaborate 10x more effectively.
The Future
Replay in the future
We see a world where collaborating with Replay is second nature. When a bug is reported, the bug report includes a replay. When a test fails, there is a link to the replay. When a question is asked on Stack Overflow, teams can discuss it directly in the replay. You see where we’re going with this.
At its heart, Replay provides the unparalleled ability to understand your software. We are sparking fundamental change by challenging the ways we think about software development.
- The code behind our code
- Integrity, honesty, and decency. Our principles are not aspirations but constraints. They lie behind every action we take, or decision we make. They ensure that we remain true to our course and true to ourselves.
- Embedded values
Our values anchor our aspirations and drive us forward.
We are making software development faster, more accessible, more inclusive, and more exciting. We are dedicated to building a world where everyone is technically literate, a world where we are better equipped to overcome the greatest of challenges.
Meet the Team
We‘re a distributed company, founded by people who have spent years working on fully distributed teams at companies like Mozilla. We work across the globe, so we focus less on hours and more on building a great product. We build for the long term: it‘s a relay, not a sprint.
Jason Laster
CEO
Jason has contributed to debuggers in several runtimes and prior to Replay was the tech lead for the Firefox Debugger. When not debugging the debugger, you’ll likely find him in the woodworking studio or outside with his pup Walle.
Brian Hackett
CTO
Brian has had a longtime passion for helping people understand hugely complex software systems, starting with a Stanford Ph.D. and continuing through 10 years at Mozilla, where he worked on JavaScript VM optimizations and developed a precursor to Replay. He is a nomadic adventurer and enjoys sailing around Polynesia and van travel in the western US with his wife.
Brian Vaughn
Software engineer
Brian enjoys building tools that help make other engineers more productive. Before joining Replay, he spent the past several years building and maintaining the React JS developer tools. When he's not writing software, Brian also enjoys making music and running.
Dan Miller
Software engineer
Dan started his career at Etsy where he worked on PHP runtimes and type systems and has been trying to help developers be more productive ever since. When not trying to express the "is a hot dog a sandwich" question using types, he can probably be found hiking or skiing if the weather is nice, otherwise he's probably playing Super Smash Bros.
Mark Erikson
Software engineer
Mark lives in southwest Ohio, USA and is a Redux maintainer, creator of Redux Toolkit, and general keeper of the Redux docs. He spends much of his time answering questions about React and Redux anywhere there's a comment box on the internet, and usually hangs out in the Reactiflux chat channels. Mark is also disturbed at the number of third-person references he has written in this bio.
Jon Bell
Designer
Jon has been excited about designing things on the internet since the 80s, and has led design teams at Twitter and Windows Phone. He lives in windy Wellington, New Zealand with his large family and loves writing, teaching classes, playing soccer, and trying to remember how to play the clarinet.
Ryan Duffy
Software engineer
Ryan hails from the cornfields of the midwest and currently resides in the pacific northwest who enjoys working across the stack at Replay. A generalist at heart, he spends his time away from Replay playing music, camping in the teardrop camper he built, working on his Mini Cooper, finding great food, and trying new things.
Holger Benl
Software engineer
Holger explored the world of programming languages from 6502 machine code to extracting LISP programs from mathematical proofs. These days he's mostly interested in creating developer tools. When he's not working on Replay or one of his VSCode extensions, he likes to read political blogs and books and watch asian movies.
Miriam Budayr
Software engineer
Miriam loves the thrill of solving difficult problems. She previously has worked as an open-source contributor on Firefox’s developer tools and also helped build video conferencing software for a telehealth platform. When she isn’t working she is playing Bach on the piano, swimming, playing Tetris, and spending time with family.
Dominik Seifert
Software engineer
Dominik's two decades of software engineering adventures involved building MMORPG servers, optimizing CUDA algorithms and building/debugging full-stack applications. After getting frustrated about the inability to directly analyze his own systems' control and data flow, he dedicated his PhD dissertation to exploring and finding novel solutions for exactly that problem. Originally from Germany, he has been living in Taiwan for most of his adult life.
Colin Weld
Software engineer
Colin helps build and scale Replay's backend. He hails from Oakland, California, and has been obsessed with data structures, invariants, and consistency since he first learned how to program. Prior to Replay, he worked on Backblaze's storage cloud. Outside of work, you can find him playing in a band, cooking, hiking, and rarely sitting still.
