Senior Software Engineer - Cryptography

Douro Labs; Porto; Presencial; EUR 55 000 - 90 000; Tempo integral

Resumo da oferta

Douro Labs is a Porto‑based company driving Web3 innovation, blending cryptography with practical software for real‑time market data across multiple blockchains. You will contribute to a threshold signing system enabling validators to verify state efficiently, while delivering open‑source solutions that developers can use and extend.

The role focuses on cryptography‑driven product development with C++ and Rust, in a startup environment, and requires strong English communication within a global

Qualificações

• Experience implementing cryptographic algorithms in software.
• Built and shipped a substantial product with cryptography as a key piece.
• Experience writing open‑source software.
• Strong communication in English for team and external developer interaction.

Responsabilidades

• Develop threshold signing system for validators to simplify cross-chain validation.
• Write open-source software and maintain clear documentation.
• Collaborate with a globally distributed team and external developers.
• Design user-centric APIs and developer documentation.

Conhecimentos

Applied Cryptography

C++

Rust

Blockchain development

Smart Contract

Descrição da oferta de emprego

Douro Labs is at the forefront of Web3 development. We help decentralize data services and enhance access to real-time, once-exclusive market data for all blockchain participants by contributing to some of the most important projects in the space, such as the Pyth Network, where we are one of the initial contributors. Pyth Network is an Oracle protocol that connects the owners of market data to applications on multiple blockchains. Pyth's market data is contributed by over 100 first‑party publishers, including some of the biggest exchanges and market‑making firms in the world. Over 350 protocols on 55+ blockchains trust Pyth to secure their applications.Douro Labs is looking for a talented Engineer who has exceptional knowledge in the area of Applied Cryptography, someone who understands cryptographic algorithms and has implemented them in software previously, as they are building a blockchain and want to implement a threshold signing system for the validators so that other chains can easily validate the state of this chain. The ideal candidate will be someone who has built and shipped a substantial product that has cryptography as a key piece.About the Team and Your Role:- We're a balanced team; half of us are tech‑talented people, while the other half excel in forging partnerships with data providers, developers, and the DeFi community - Communication is key in our network‑driven approach.- Work remotely: Our team spans the globe from the US and South America to Europe and Asia, with an optional office in Porto, Portugal. Remote work is our norm.- English proficiency is essential as it's our medium for team and external developer communication.- Thrive in a startup environment within the dynamic DeFi space. We value adaptable problem solvers eager to address evolving market needs.- Write open‑source software: Check out our open‑source projects on GitHub for a sneak peek into our work.- User‑centric development: Our success hinges on external developers engaging with our solutions—crafting user‑friendly APIs and crystal‑clear documentation that aligns with developers' needs.

Tech stack

• C++
• Applied Cryptography
• Rust
• Blockchain development
• Smart Contract