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Software Engineer

Internxt

Internxt

Software Engineering
Valencia, Spain · Valencia, Spain
Posted on Jul 2, 2025

Company Description

Internxt provides an open-source, post-quantum encrypted suite of secure services designed to protect your privacy. Our services are private by default, secure by design, and free as in freedom, ensuring that users' data is kept safe and secure.

Role Description

This is a full-time role for a Senior Software Engineer, located in Valencia, with some flexibility for remote work. The Software Engineer will be responsible for designing, building, and maintaining backend services and infrastructure. Day-to-day tasks include writing clean, scalable code, troubleshooting and debugging existing systems, collaborating with cross-functional teams, implementing software solutions, and ensuring the performance and reliability of applications. You will directly report to the company's CTO.

Qualifications

  • Strong knowledge in Computer Science and Programming
  • Experience with Back-End Development and Software Development
  • Excellent problem-solving and analytical skills
  • Bachelor's degree in Computer Science or related field
  • Experience with open-source projects is a plus
  • Develop and maintain software components primarily using NodeJS
  • Develop and maintain software components primarily using Kubernetes
  • Implement and optimize data synchronization mechanisms
  • Collaborate with other team members to integrate features and resolve issues
  • Ensure that applications meet performance and security standards
  • Minimum 3 years of development experience with NodeJS and Kubernetes.
  • Minimum 3 years of experience working as a full-stack and/or back-end engineer
  • Experience in multithreading and resource optimization
  • Problem-solving skills and ability to work autonomously