We're Crypto Ecosystem Builders

We are a product based Blockchain company focused on building critical products and solutions on top of the most promising crypto projects in the space. Our products empower our users with a great experience thanks to our domain expertise in the full Blockchain stack.

What We Do


Extend Blockchain Protocol Layers

We build critical infrastructure to support layer 1 Blockchains and their smart contract layers.


Implement First-Class Ecosystem Tooling

Development of essential libraries, APIs, SDKs, and core ecosystem tooling which enables adoption.


Develop and Release User-Facing Apps

From ideation to release (complete life-cycle) for the development of wallets and DApps.

Our Team

Nicolas Arqueros
Co-founder and CEO

Nicolas has experience both founding and advising many successful startups during his career. He was previously the CTO for EMURGO (Consensys of Cardano) and currently serves as a Board Member at the Cardano Foundation and a Senior Investment Advisor for SOSV.

Sebastien Guillemot
Co-founder and CTO

After working at Microsoft, Sebastien joined EMURGO (Consensys of Cardano) as the VP of Engineering & Cardano Product Manager where his team built products that grew to 6-digit active user counts and lead development of SDKs used by large companies like Coinbase.

Robert Kornacki
Co-founder and CSO

Robert started as a fellow in dLab (blockchain accelerator program) and subsequently joined the Ergo Foundation as a board member as well as EMURGO (Consensys of Cardano) as Head of Research where he developed design patterns and smart contracts that handle millions in assets.

About Us

Our founding team has combined over a decade of experience in Blockchain development and producing real products & solutions. The dcSpark team has proven deep knowledge of the full crypto ecosystem: ideation of protocols, implementing highly sophisticated wallets, creating crypto libraries, investing in upcoming blockchain technologies, and more.

Current Positions

Would you like to join our team?

We're always looking for talent