Backend Developer
Work Modality: Barcelona - Hybrid (3 days per week on-site)
Schedule: Full-time
Contract type: Indefinite
Brief Description
We are looking for a Backend Developer to join our team and contribute to the development of our next-generation project repository. If you are passionate about scalable architectures, cloud services, and high-performance backend solutions, this is an opportunity to work on cutting-edge technology in the blockchain and fintech space.
Key Responsibilities

Backend Development: Design, develop, and maintain backend services and APIs using Node.js, TypeScript, and serverless frameworks.
Integration with AWS Services: Implement integrations with AWS services such as SNS, SQS, API Gateway, and Lambda functions.
Database Management: Manage and optimize PostgreSQL databases using Sequelize ORM and Sequelize TypeScript.
Performance Optimization: Identify and resolve performance bottlenecks, implement caching mechanisms, and ensure optimal response times for backend services.
Serverless Deployment:



Deploy and manage serverless applications using Serverless Framework and esbuild for efficient bundling.
DevOps & Tooling: Work with CI/CD pipelines, automate infrastructure provisioning, and ensure effective monitoring and logging of backend systems.
Testing & Quality Assurance: Write unit tests, integration tests, and participate in code reviews to maintain high code quality and reliability.
Documentation & Collaboration: Contribute to technical documentation, mentor junior developers, and collaborate closely with frontend and cross-functional teams.

Requirements

Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
2+ years of experience as a Backend Developer.
Strong knowledge of Node.js, TypeScript, and modern backend technologies.
Proficiency in PostgreSQL and Sequelize ORM with TypeScript.
Familiarity with serverless architectures and deployments using Serverless Framework.
Strong understanding of desig

📌 Backend Developer (Barcelona)
🏢 Brickken
📍 Barcelona