The Haskell Foundation Executive Team reports to the Board of Directors and manages the day to day work of the Foundation. They interpret the Board's priorities, research solutions, and work with the community to execute of the Foundation's mission.
Jose Calderon’s background is split between industrial R&D at Galois, Inc. and Computer Science instruction at the University of Maryland. His research has focused on the implementation of programming languages for privacy-preserving technologies, high-assurance deployments, and the implementation of lazy functional languages. Much of his work leveraged Haskell as the implementation language of choice, though he has used OCaml, Racket, and C professionally. At the University of Maryland Jose taught the Systems Programming, Programming Languages, and Compilers courses.
The Haskell Foundation board of directors are responsible for managing and setting the direction of the Haskell Foundation.
More often known as Bodigrim, Andrew is an extremely active Haskell community member, library author and maintainer, speaker and mentor. He has made strides towards cleaning out backlogs for bytestring, text, unix, random, and vector, which were previously stalled. Andrew holds a PhD degree for contributions to the theory of the Riemann zeta-function and develops a range of mathematical packages with a focus on performance.
Avi Press is a developer tool author, Haskell enthusiast, and the founder/CEO of Scarf, which has been proudly running Haskell in production since 2019. Avi has been avidly using Haskell since 2014 and also currently serves on the Haskell.org committee. He is an advocate for open source broadly, as well as for better data-sharing initiatives within the open source community.
With expertise across diverse fields including physics, biology, and web development, Dominik brings a broad perspective on programming challenges. He developed a deep affinity for Haskell during his PhD and postdoc, using the language to model evolutionary trees.
This experience in Haskell – where the process of building and manipulating complex structures felt uniquely intuitive and expressive – led him to pursue a career as a software engineer focused on functional programming. Dominik maintains a set of Hackage packages geared towards statistical programming.
Jasper encountered Haskell just as he started university, and was completely smitten by the language. He went on to spent most of his student days working on various open source Haskell projects. After graduating, he worked for several companies using Haskell in production. He then started to contribute to the community, chairing the Haskell.org foundation and growing ZuriHac into a world-class event. He currently works in the cloud & software security field.
Laurent joined the Haskell community in 2017. He participates a lot in open-source software developement, and maintains several projects such as Cloud Haskell, Beam, and Hakyll. One of his goals for the Haskell Foundation is to expand the reach of Haskell in industry, by facilitating the learning experience for people curious about Haskell.
Laurent has a PhD in Physics, with a focus on quantum condensed matter. His personal interests include the application of Haskell for high-performance scientific computing, distributed systems, and data science. Today, Laurent works at Bitnomial, a fintech startup running a commodity derivatives exchange and clearinghouse, and whose entire backend is built in Haskell.
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Founder and CEO of digitally induced. Marc is interested in driving the adoption of functional programming in the broader software industry. He is author of the IHP web framework and organizes the Silicon Valley Haskell Meetup.
Michael is an engineer working at CircuitHub, with experience in programming languages, developer tooling, program analysis, and industrial R&D. He is also one of the maintainers of the Haskell Language Server. Michael has a keen interest in developer experience, and hopes to polish a few more rough edges off the Haskell diamond.
Mike codes as a hobbyist and has been interested in programming since his childhood in the late 1970s. He first encountered Haskell in 2013 and was immediately impressed by its mathematicality. It has been his sole coding focus since then. Today, Mike is an active maintainer of the ansi-terminal package and the Stack project, and makes ad hoc contributions to other Haskell projects. Mike is a chartered accountant by profession and a Senior Managing Director in the Economic and Financial Consulting practice of FTI Consulting.
Richard has a long track record of contributing to Haskell (GHC, in particular) since 2012, including many publications pushing the boundaries of what Haskell can accomplish. He implemented -XTypeInType and -XTypeApplications, has done considerable work on the constraint solver, type checker, and core language representations in GHC. He is also the author of singletons, serves on the GHC Steering Committee, and was an early member of the HF working group, driving the development of its initial technical agendas. He has been chair of the Haskell Symposium and Haskell Implementors’ Workshop. Richard currently works at Jane Street as a compiler engineer, and enjoys thinking about taking Haskell ideas into OCaml and OCaml ideas into Haskell.
Founder of Obsidian Systems, organizer for the NY Haskell User Group, 3-time Haskell.org Board Member and treasurer since its incorporation. Ryan has both personally helped the HF with its fundraising and made in-kind contributions through Obsidian to the HF’s web dev track.
Simon worked on GHC full time from about 1998 to 2013, and sporadically since then. He is the main author of the runtime system, the code generator, and various other parts of the compiler. He is the author of the O’Reilly book “Parallel and Concurrent Programming in Haskell”. In 2013 he moved to Facebook (now Meta) where he led the team that built the largest ever production Haskell deployment, Sigma, which was a platform for combating abuse on Facebook, Instagram and WhatsApp. While at Meta he also led the team that built Glean, a system for collecting and querying information about source code at scale; Glean is open-source and is still in use as a core part of Meta’s developer tooling infrastructure. He left Meta in February 2025 and nowadays he spends his time mostly riding his bike and hacking on things that he finds interesting.
Simon is an Engineering Fellow at Epic Games. Until 2022, he was a researcher at Microsoft Research in Cambridge, England, where he started in Sept 1998. He’s also an Honorary Professor of the Computing Science Department at Glasgow University, where he was a professor during 1990-1998. Simon is interested in the design, implementation, and application of lazy functional languages. He was one of the original designers of Haskell, and much of his work is focused around the Glasgow Haskell Compiler and its ramifications. Simon is also chair of Computing at School, the group at the epicentre of the reform of the national curriculum for Computing in England. Computer science is now a foundational subject, alongside maths and natural science, that every child learns from primary school onwards.
Designer and maintainer of Opaleye, who is currently a software engineer with Groq, with a Ph.D in mathematics (probability theory).
