Backend blockchain developer
📍 Location | Málaga
⚒️ Employment Type | Full-time
💸 Salary | Competitive, based on experience
🗣️ Language | English (Mandatory)
We're looking for you if… 🫵
You are an experienced Backend Blockchain Developer with a deep understanding of blockchain ecosystems, high-performance systems, and API development. You thrive in a fast-paced environment, working with cutting-edge technologies to build scalable and secure solutions. You are passionate about decentralized finance (DeFi), have hands-on experience with blockchain nodes, and are eager to optimize data pipelines for decentralized exchanges (DEXs).
Key Responsibilities 💻
* Connect and interact with blockchain nodes (Ethereum, BSC, Polygon, etc.).
* Process and filter blockchain event streams to extract data from DEXs such as Uniswap, PancakeSwap, and SushiSwap.
* Store and manage blockchain data efficiently in databases.
* Develop RESTful APIs to expose blockchain data (prices, metrics, liquidity, etc.).
* Optimize system performance, ensuring high availability and reliability.
* Contribute to the architecture design of scalable blockchain solutions.
* Collaborate with analysts and developers to refine technical requirements.
* Mentor junior developers and promote a knowledge-sharing culture within the team.
Required Skills and Technologies 🧩
* Experience: 5+ years in software development, 3+ years working with blockchain technologies.
* Blockchain: Strong knowledge of Ethereum, BSC, and Polygon, including node management.
* Event Processing: Experience working with blockchain event streams and filtering techniques.
* DEXs: Hands-on experience with Uniswap, PancakeSwap, and SushiSwap.
* Backend Development: Proficiency in one or more programming languages: Go, Rust, Python, TypeScript/JavaScript.
* APIs: Proven experience in designing and developing RESTful APIs.
* Databases: Strong knowledge of PostgreSQL, MongoDB, or similar databases.
* Architecture: Expertise in microservices and high-load system design.
* DevOps & Infrastructure: Experience with Docker and Kubernetes for service deployment.
* Version Control: Proficiency in Git for code management and collaboration.
* Communication: Fluent English (both written and spoken) for clear remote and in-person interactions.
Nice to Have 💡
* Experience with Web3.js, Ethers.js, or similar blockchain libraries.
* Knowledge of GraphQL for efficient data querying.
* Hands-on experience with data indexers like The Graph.
* Familiarity with monitoring and logging tools such as Prometheus, Grafana, ELK Stack.
* Contributions to open-source projects in the blockchain space.
What We Offer 🔍
* Flexible Work Model: Opportunity to work onsite in Málaga with potential hybrid flexibility.
* Competitive Salary: Compensation based on experience and expertise.
* Cutting-Edge Tech Stack: Work on innovative blockchain solutions in a high-impact role.
* Growth & Learning: Work in a fast-paced environment with continuous learning and development opportunities.
* Collaborative Culture: Be part of a highly skilled and supportive team in the blockchain industry.