An Application Support Developer is a hybrid role responsible for maintaining, troubleshooting, and enhancing existing software applications while providing 2nd/3rd line technical support. They resolve complex incidents, automate workflows, and deploy updates, bridging the gap between operational support and development to ensure system stability and performance. This role can be performed hybrid from Barcelona or Warsaw, or fully remotely within either country.

Technical Support & Troubleshooting: Provide 2nd/3rd line support, diagnosing and resolving complex application issues, bugs, and performance bottlenecks. Maintain, debug, and improve existing applications, often writing code to resolve issues or add minor features.

Monitoring & Optimization: Proactively monitor application performance, ensuring high availability, and optimizing systems for better performance.

Release Management: Support deployment, release cycles, and environment management. Maintain technical documentation, knowledge bases, and support guides.

Skills and QualificationsProgramming Languages: Proficiency in languages such as Java, Python, JavaScript, PHP, or .NET.Database Knowledge: Strong SQL skills for querying, debugging, and managing databases.

Experience with Windows, UNIX/Solaris, and IIS.Strong analytical and troubleshooting skills, with a focus on root cause analysis. Previous experience in application support or software development. Excellent communication for stakeholder management, and the ability to work in Agile, ITIL-driven environments.

Common

QualificationsBachelor's degree in computer science, IT, or a related field. ITIL, specific cloud or programming certifications) are often preferred.





Salary range varies by location and local market conditions - for Poland only: the annual salary range for this position is 75,000-100,000 PLN gross - and is based on multiple factors, including job-related knowledge/skills, experience, geographical location, and other factors. You'll also enjoy annual paid leave, access to our ULS University to support continuous learning and career growth, two volunteering days each year to participate in community activities, and adaptable working arrangements designed to help you balance work and life. This role is gender-neutral and open to all qualified applicants, regardless of gender identity or expression.

From day one, we've blazed a trail protecting the planet and everyone on it. Our teams have influenced billions of products, plus services, software offerings and more. That's where you come in — because none of it could happen without you.

It takes passion to protect people, problem-solving to safeguard personal data and conviction to make the world a more sustainable place. It takes bold ideas and brilliant minds to build a better world for future generations across the globe. It's a calling.

But we're also a global community, working together to help create a safer world. It means investing in training and empowering our people to learn and innovate. Persons are recruited, hired, assigned and promoted without regard to race, color, age, sex or gender, sexual orientation, gender identity, gender expression, transgender status, religion, creed, national origin, ethnicity, citizenship, ancestry, disability, genetic information, military or veteran status, pregnancy, marital or familial status, or any other protected category under applicable law.

📌 Application Support Developer C# .NET (Madrid)
🏢 Ul
📍 Madrid