A JAM client written in Zig, as sole developer. First to pass Milestone 1 conformance in the systems-language category of the Web3 Foundation's JAM Prize, and the only Zig implementation among the competing teams. JAM Prize M1 candidate after passing the M1 interview.

Blockchain engineer in the R&D group, in Rust. Consensus algorithms and libp2p networking, an in-memory transport layer, a 15,000-node consensus test with sub-two-second global finality, partial IPLD state synchronisation that onboards a node in under fifteen seconds, game-theoretic protocol design and atomic swaps.

DeFi expert and Solana smart contract engineer. Built a native Solana runtime for high-performance fuzzing with Google's honggfuzz, and fuzzed Hubble's contracts both technically and financially.

Arbitrage bots in Rust, Solidity and Yul competing against Uberbot; a custom Ethereum P2P client for rapid reaction to mempool events; a research token with liquidity mining contracts; and high-frequency trading algorithms on Deribit options at Monetashi.

Founding block producer candidate for the community launch of EOS, from the Netherlands, in the founding top ten; and a startup designing trading algorithms and bots for crypto exchanges.

Concept design, project management and prototype development for one of the most advanced market simulator games in europe. This market simulator targeted at the dutch market allows the participant to get used to many of the facets of electronic trading. Stocks, options and derivates are all represented in this game.

I-Med, the publisher of Spele.nl reaching out to more than 500K unique people every day proposed to build a self-serving advertiser platform. This started a 4 month project to build Keygamesnetwork.com

Tagged.nl recently launched the new game platform "GameBattle" (http://www.gamebattle.nl). GameBattle gives consumers the possibility to sharpen their minds and test their skills by playing game battles.

Complete technical and graphical realisation for this online, multiuser concept created for Factor5 (for "De Telegraaf " Netherlands).

Complete technical and graphical realisation for this online, multiuser concept created for Factor5 (for "Voetbal International" Netherlands).

Second version of online concept. In this game users can be a popmanager. You will have to buy popstars with a budget of one million dollars. To make profit and earn points you will have to buy those stars that will obtain most publicity on radio538 and the Hitkrant. If you get to the top 5, you can start collecting prizes!

First version of online concept. In this game you are a popmanager. You will have to buy popstars with a budget of one million dollars. To make profit and earn points you will have to buy those stars that will obtain most publicity on radio538 and the Hitkrant. If you get to the top 5, you can start collecting prizes!

Some highlights of my freelance work