Senior Software Developer (.NET) en Barcelona, España

Overview

WELCOME TO SITA

At SITA, we keep airports moving, airlines flying smoothly, and borders open. Our technology and communication innovations power the success of the global air travel industry.

You’ll find us in 95% of international airports, working closely with over 2,500 transportation and government clients. Each partnership brings unique challenges, and we thrive on delivering fresh solutions and cutting-edge tech to keep operations running like clockwork. We don't just move the world forward-we're proud to be recognized as a Great Place to Work ® by 79% of our employees and certified in most of our growing locations. Here, we feel empowered, supported, and inspired to grow.

Are you ready to love your job?

The adventure begins right here, with you, at SITA.

PURPOSE

SITA For Aircraft is looking for a talented Senior Software Developer to join a strategic modernization program focused on the next generation of Datalink observability, monitoring, provisioning, and configuration management systems.

Based in Barcelona and collaborating with the Montreal engineering team, you will design, build, test, and maintain software applications that transform how Datalink services are monitored, configured, and operated across SITA's global infrastructure.

Working on well-scoped components, you will collaborate with analysts, testers, and software engineers to write high-quality, maintainable code and ensure solutions meet functional and non-functional requirements. The ideal candidate brings solid software development experience, hands-on knowledge of observability tooling, and a drive to apply modern AI-powered techniques to system development challenges

KEY RESPONSIBILITIES

System Software Development

• Analyze and identify areas of improvement for legacy system software.

• Contribute to the development of new Datalink Monitoring, Observability, Provisioning, and Configuration Management applications.

• Write high-quality, maintainable code that meets functional and non-functional requirements and following SITA guidelines, including performance, scalability, and security policies.

• Apply AI-powered development tools to improve coding efficiency, code quality, and documentation generation.

Testing & Quality Assurance

• Design and perform software tests for Datalink applications, monitor and diagnose performance issues.

• Monitor, identify, and correct software defects to maintain fully functioning applications.

• Respond to performance issues and contribute to the improvement of system reliability and maintainability.

System Roadmap & Modernization

• Contribute to and help maintain the development backlog ensuring work is prioritized in line with business and operational requirements.

• Support the modernization of legacy monitoring and configuration management assets while maintaining operational continuity.

• Ensure developed components are resilient, scalable, and aligned with long-term system evolution goals.

Collaboration & Communication

• Work closely with software engineers, architects, analysts, testers, product managers, and operations teams.

• Share information openly, stay in sync with team members, and contribute to a collaborative, ownership-driven team culture.

• Promptly communicate relevant updates, risks, and progress with the right level of detail for the audience.

Security, Documentation & Compliance

• Implement required security measures and contribute to secure-by-design practices within system development.

• Create and maintain technical and user documentation to a high standard; leverage AI tools to support documentation quality and efficiency.

• Identify instances of non-compliance with SITA's policies and procedures and report or elevate appropriately.

Qualifications

EXPERIENCE

• 10+ years experience as a Software Developer, Software Engineer, or equivalent in a professional software development environment, working on large scale real-time and/or critical systems..

• Strong software development experience with .NET 8, 10 and C# in Windows environment.

• Hands‑on experience with container orchestration and modern observability ecosystems in Linux production environment, including Grafana Labs tools such as Alloy, Loki, Mimir (or Prometheus), Grafana, and OpenTelemetry Protocol.

• Experience in software integration, configuration management, APIs (REST, SNMP, TCP/IP, UDP), microservices, and backend systems in a distributed systems context.

• Solid understanding of software architecture principles, modern programming paradigms, and event-based systems (Kafka).

• Strong problem-solving skills and the ability to collaborate effectively in an international, distributed engineering environment.

• Experience writing high-quality, maintainable and testable code, and contributing to code and design reviews. Understanding SOLID and Clean Code principles is an asset.

• Hands‑on experience with AI-powered development tools for coding assistance, test automation, or documentation generation.

• Fluent in professional English

EDUCATION

• University Degree in Computer Science, Software Engineering, or a related field — or equivalent demonstrated experience. A specific degree is not a prerequisite; equivalent experience and capability are equally valued.

PREFERRED EXPERIENCE AND SKILLSET

• Experience in aviation, telecommunications, networking, or mission‑critical systems.

• Knowledge of operational support systems, configuration management, and service management environments such as ServiceNow.

• Fluent in professional French

WHAT WE OFFER

We're all about diversity. We operate in 200 countries and speak 60 different languages and cultures. We're really proud of our inclusive environment. Our offices are comfortable and fun places to work, and we make sure you get to work from home too. Find out what it's like to join our team and take a step closer to your best life ever.

Flex Week: Work from home up to 2 days/week (depending on your team's needs)

Flex Day: Make your workday suit your life and plans.

Flex-Location: Take up to 30 days a year to work from any location in the world.

Employee Wellbeing: We have got you covered with our Employee Assistance Program (EAP), for you and your dependents 24/7, 365 days/year. We also offer Champion Health - a personalized platform that supports a range of wellbeing needs.

Professional Development: At SITA, we believe growth fuels innovation. Our learning ecosystem offers access to world‑class platforms and programs designed to help you thrive. From LinkedIn Learning, Microsoft's Enterprise Skills Initiative, and Airport Council International -available to all employees-to specialized solutions like Pluralsight for technology upskilling, Harvard Business Publishing for people leadership, Stanford for strategic development and many others, we align learning opportunities with your Development Plan and our business priorities. Your development journey is supported every step of the way.

Competitive Benefits: Competitive benefits that make sense with both your local market and employment status.

SITA is an Equal Opportunity Employer. We value a diverse workforce. In support of our Employment Equity Program, we encourage women, aboriginal people, members of visible minorities, and/or persons with disabilities to apply and self-identify in the application process.