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

📌 Backend Developer (Madrid)
🏢 Brickken
📍 Madrid