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# Blockchain Engineer

- **Company:** Blockchain
- **Location:** Madrid, Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** Software Applications, Python (Programming Language), Blockchain, Test-Driven Development (TDD)
- **Published:** July 20, 2026
- **Apply:** https://es.trabajo.org/oferta-3206-577c59cd48d0f461dfdcaaf2cbab1b9e

## About the Role

service anatomy, Knowledge of blockchain daemons such as bitcoind, Geth, OpenEthereum - Highly skilled in writing quality code by using test-driven development (TDD) techniques

## Description

cryptography infrastructure, including wallet, framework and libraries development, requirement gathering, design, coding, testing, deployment, documentation and support - Working hands on to setup and maintain servers and nodes for all types of Blockchains (mainstream as well as DeFi protocols). - Be part of the future lightning network integration, next to develop Stacking capabilities in house. - Implementation of strategies to avoid congestion and reduce fees (transaction batching, segwit, bech32) - Constant evaluation of the ecosystem to identify and resolve any security issues What we're looking for: - Professional experience working with Python and blockchain technologies. - Analytical thinking. - Motivation to learn new technologies. - You (must be active) in the planning and implementation of computer software for the cryptocurrency market. - Advanced knowledge of blockchain concepts like distributed ledger, consensus and smart contracts -, Deep understanding of REST


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