Mats Olsen - Co-founder & CTO at Dune

Mats Olsen

Co-founder & CTO at Dune

Zug, Zug, Switzerland

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Summary

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Rockstar

🎓

Top School

Mats Olsen is a co-founder and CTO with 12 years of experience building data platforms for financial institutions, currently leading technical strategy at Dune from Zug, Switzerland. With a strong quantitative background (MSc in Applied Mathematics from NTNU) he blends data science rigor from roles at Schibsted with hands-on engineering and database optimization for large-scale analytics. He contributes actively to open source—improving search-index internals and shaping SQL materialized views for Dune’s analytics engine—showing a focus on maintainability and performant data modeling. Mats is comfortable across back-end systems, SQL, and production engineering, and often surfaces pragmatic fixes like dependency updates and instantiation refactors that reduce developer friction. Beyond the office he’s a hacker at heart—“building dune. hacking. might climb.”—bringing curiosity and a builder’s persistence to product and platform challenges.

12 years of coding experience

3 years of employment as a software developer

National University of Singapore

University of Oslo

UPC Universitat Politècnica de Catalunya

Norwegian University of Science and Technology

English, Norwegian, Spanish

Github Skills (21)

javascript10

postgresql10

python10

object-oriented-programming10

data-structure10

dictionary10

sql10

data-structures10

protocols10

testing9

unit-testing9

searching9

data-modeling9

nodejs9

database-optimization9

Programming languages (18)

MDXJavaCSSC++RustCPLpgSQLScala

Github contributions (5)

mewwts/addict

Dec 2014 - Nov 2020

The Python Dict that's better than heroin.

Role in this project:

Back-end Developer

Contributions:10 releases, 156 commits, 50 PRs in 6 years

Contributions summary:Mats primarily contributed to the development of the `addict` library, which provides a custom dictionary class with attribute-style access. They implemented the core logic for setting, getting, and deleting items using both attribute and item syntax. The user added functionality such as a deep copy mechanism, and the ability to prune empty or false-y values from the dictionary. The changes included updates to the `__init__` method, incorporating support for tuples, generators, and other data types.

pythonflaskpython-dictaddictpython3

duneanalytics/spellbook

Jan 2020 - Aug 2021

SQL views for Dune

Role in this project:

Back-end Developer & Database Engineer

Contributions:116 reviews, 103 commits, 315 PRs in 1 year 6 months

Contributions summary:Mats's contributions primarily involve creating and modifying SQL views for the Dune Analytics platform. Their work includes defining materialized views for various DeFi protocols, such as Gnosis Safe and Compound. The user also addressed issues like invalid byte array formats and added hardcoded where clauses to optimize query performance. They demonstrated an understanding of data modeling and database optimization techniques.

sqldatabasemysqldune

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