Marton Lederer
Senior Software Engineer at Cubilog Ltd.
Budapest, Hungary
Summary
🤩
Rockstar🎓
Top SchoolMarton Lederer is a Senior Software Engineer based in Budapest with eight years of full-stack experience and a strong focus on TypeScript and decentralized web technologies. He co-founded multiple projects in the Arweave ecosystem—including WanderWallet and the Liquid Labs lending protocol—and shipped foundational pieces like the first Arweave wallet with 80K+ users and the Verto DEX. Marton contributes to high-profile open-source projects such as DefinitelyTyped and arweave-js, where he authors type definitions and wallet integration features that improve developer ergonomics and security. Comfortable at the intersection of product and protocol, he combines startup leadership experience (CTO/co-founder roles) with deep hands-on engineering to deliver resilient, type-safe systems. An often-overlooked strength is his attention to developer experience: many of his contributions are about making complex blockchain integrations easier and safer for other developers.
8 years of coding experience
5 years of employment as a software developer
High School Diploma, High School Diploma at Alternatív Közgazdasági GimnáziumBachelor's degree, Computer Engineering, Bachelor's degree, Computer Engineering at Budapest University of Technology and Economics
English, Spanish, Hungarian
Github Skills (14)
typescript10
javascript10
dts10
typescripts10
api10
web3js10
type-definition10
apidoc10
typescript-types10
typedefs10
fetch-api9
typesc9
type-system9
nodejs9
Programming languages (11)
Github contributions (5)
ArweaveTeam/arweave-js
Feb 2021 - Jan 2023
Browser and Nodejs client for general interaction with the arweave protocol and gateways
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:1 review, 16 commits, 7 PRs in 1 year 11 months
Contributions summary:Marton's contributions primarily involve enhancing the arweave-js library with features related to Arweave wallet integration. They added type declarations for wallet transactions, implemented permission checks, and included event declarations to improve the library's interoperability with Arweave wallets. Furthermore, the user refactored the code to use arconnect type declarations and implemented a custom fetch-based request, improving the library's functionality and maintainability.
interactionbrowserblockstackjavascriptnodejs
DefinitelyTyped/DefinitelyTyped
Jan 2021 - Apr 2021
The repository for high quality TypeScript type definitions.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:5 reviews, 8 commits, 16 PRs in 2 months
Contributions summary:Marton primarily contributed to the development of TypeScript type definitions within the `definitelytyped/definitelytyped` repository. Their work involved creating and updating type declarations for various JavaScript libraries and APIs, including `limestonefi/api`, `exchange-rates-api`, `use-prefers-color-scheme`, `use-color-scheme`, `weaveid`, `redux-persist-webextension-storage`, and `arconnect`, demonstrating a focus on ensuring type safety and code correctness for developers using these libraries. They also corrected any errors in the tests within the commit messages. The contributions indicate a proficiency in TypeScript and a deep understanding of type definition creation for the JavaScript ecosystem.
typescript-definitionstype-definitionshigh-qualitydtsdefinitions
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