onsite

Senior Backend Developer CRM - Holded

Backend Engineer

Senior Backend Developer focused on CRM solutions, building scalable RESTful services with Node.js or Python, managing relational databases, and deploying microservices on AWS to support intuitive business software.

About the role

Senior Backend Developer CRM at Holded.

Key technologies: Software Development, System Design, Problem Solving.

Key Responsibilities

Build and maintain RESTful APIs and backend services
Design database schemas and optimize queries for performance
Implement authentication, caching and scalability solutions
Collaborate with frontend engineers to define API contracts

Requirements

5+ years of relevant experience in backend engineer
Proficiency in SQL and/or NoSQL databases
Familiarity with microservices and containerization

Skills

nodejspythonsqlaws

CompanyHolded

DepartmentEngineering

LocationBarcelona, Spain

Experience5+ years

Tenurefull-time

LevelSenior

Posted June 19, 2026