IT
Curated Remote Opportunity · es.whatjobs.com$0 Platform Fee🇬🇧English

Backend Developer (Node.js / Database Specialist)

Infoser Technological solutions, Hardware, Big Data Experts

Madrid, Spain
Competitive Pay
contract
Posted 11/1/2026

Clivora Direct Engagement: All applications and proposals are submitted directly through Clivora Connect. Clients review bids and communicate with $0 platform fees, allowing you to keep 100% of your earnings.

Role Overview

If you're passionate about backend development, database design, and building scalable solutions, and you have strong experience with SQL, PostgreSQL, TypeScript, Node.js, and REST APIs, this opportunity is for you! 100 % Remote

Key Responsibilities

  • Design, develop, and maintain robust relational database solutions using PostgreSQL.
  • Design and maintain database schemas, ensuring data integrity, scalability, and high performance.
  • Develop and optimize complex SQL queries and database operations.
  • Create and maintain views, stored procedures, functions, and triggers.
  • Analyze and troubleshoot data integrity and database-related issues.
  • Develop REST APIs using Node.js, Express.js, and TypeScript.
  • Build and maintain integrations between backend applications, APIs, and databases.
  • Develop and maintain automated unit tests using tools such as Jest.
  • Monitor and improve database performance through query

Apply & Contact

Clivora Connect ($0 Fee)

Submit your proposal directly through Clivora Connect. Zero platform commissions, direct milestone tracking, and 100% retained earnings.

Unlock Direct Company Contact & Apply

Sign in or create a free account to reveal direct company contact, external ATS links, and apply with $0 fees.

✓100% direct client payout (0% platform cut vs 10-20% on legacy sites)
✓Milestone contract tracking & direct settlement
✓Integrated invoicing, CRM & timesheets

Founder Platform Guarantee

Founded by Usman Ghias at CODCrafters to free independent developers and agencies from predatory platform commissions.

About the Employer

Infoser Technological solutions, Hardware, Big Data Experts

Verified Organization

Hiring for Infoser Technological solutions, Hardware, Big Data Experts?

Register your employer profile to review inbound candidate proposals, message talent directly with $0 platform fees, and manage milestones on Clivora.

Claim this employer profile →
Hiring for this role?

Claim this posting to manage incoming applications directly and post future roles with $0 fees.

Claim this Listing Free