Backend Developer

Brickken; Barcelona; Híbrido; EUR 42.000 - 70.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Hybrid work model

4 weeks telework per year

Health coverage

Compensation package

Birthday day off

Wellness programs

Descripción de la vacante

Brickken is seeking a Backend Developer to join its Barcelona team in a hybrid setup. The role focuses on building scalable backend services and APIs using Node.js, TypeScript, and serverless frameworks.

You will work with AWS SNS/SQS, API Gateway and Lambda, and manage PostgreSQL via Sequelize ORM. The ideal candidate has 2+ years of backend experience, strong problem-solving skills, and an interest in cloud-native architectures.

Formación

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
• 2+ years of backend development experience.
• Strong knowledge of Node.js, TypeScript, and modern backend tech.
• Proficiency with PostgreSQL and Sequelize ORM with TypeScript.
• Experience with serverless architectures and Serverless Framework.
• Solid design pattern, SOLID principles, and best practices.

Responsabilidades

• Backend development: design, develop, and maintain services and APIs using Node.js, TypeScript and serverless frameworks.
• Integrate AWS services such as SNS, SQS, API Gateway, and Lambda functions.
• Manage and optimize PostgreSQL databases with Sequelize ORM and Sequelize TypeScript.
• Identify performance bottlenecks, implement caching and ensure fast responses.
• Deploy and manage serverless apps with Serverless Framework and esbuild.
• Work with CI/CD, automate infrastructure provisioning, and monitor logs.
• Write unit/integration tests and participate in code reviews.
• Contribute to technical docs and collaborate with frontend and cross-functional teams.

Conocimientos

Problem solving

Teamwork

Communication

Adaptability

Mentoring

Educación

Bachelor’s or Master’s in Computer Science/Engineering

Herramientas

Node.js

TypeScript

Serverless Framework

esbuild

AWS (SNS, SQS, API Gateway, Lambda)

PostgreSQL

Sequelize ORM

Sequelize TypeScript

Descripción del empleo

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 design patterns, SOLID principles, and backend development best practices.
• Excellent problem-solving skills and ability to work in a fast-paced, collaborative environment.
• Intermediate English level.

Bonus Points

• AWS certification (e.g., AWS Certified Developer - Associate).
• Experience in building and maintaining scalable and distributed systems.
• Knowledge of event-driven architectures using AWS SNS, SQS, and event sourcing patterns.
• Contributions to open-source projects or active participation in developer communities.
• If you are looking for a challenge in backend development, working with scalable, high-performance architectures, and cloud-native technologies, we would like to hear from you.
• AI and Blockchain knowledge or interest.

Soft Skills

• Problem Solving
• Teamwork & Collaboration
• Communication Skills
• Adaptability & Continuous Learning
• Mentoring & Knowledge Sharing

Company Benefits

• Hybrid work model and flexible hours.
• Worldwide telework for 4 weeks per year.
• Health coverage
• Compensation and benefits package
• Birthday day off
• Wellness programs

Why Brickken?

• Rebuilding at Its Core: Innovation alone is not enough to describe our daily tasks, as we aim to be better than we were yesterday. We have the ability to question and enhance our work continuously.
• Global Impact: Your work will cross borders and transform the vision of the fintech landscape on a global scale.
• Growth and Learning: We foster an environment of continuous learning and personal development.
• Teambuilding: Being united is the most important thing for us, which is why we organize internal workshops.
• Startup Environment & Collaborative Culture: You'll be part of a dynamic international team ( +10 nationalities) that values creativity, diversity, and inclusivity.