Java jobs in Spain

ERNI is a Swiss Software Engineering company leader in building complex, customized software solutions. It’s more than 25 years of using technology to have a positive impact on people's lives.

We build digital solutions that connect the physical world (devices & connectivity) with the digital one (software solutions, connected, or consuming their data). Our teams are focused on prioritize the software lifecycle & to ensure that our code is both clean and secure. Our maturity in building high-impact software solutions approaches us whatever industry looking for quality and sophistication (e.g. Gaming, FMCG or Validation & Inspection..).

Our leadership in the Health-Tech (Diagnostic Medical Devices, Pharma, Health Care and more) and in all industries around Smart Devices (Robots, Cars, 3D Printers, Machinery), in a powerful combination with the way we growth people, let us create a growing, learning and challenging set up for ERNIans.

Can you imagine modernizing a critical embedded Java platform running on Linux systems? 🚀🔧

Join our expert team to work on a software solution in the access control sector, contributing to the migration and modernization of a complex embedded Java platform.

You will apply your knowledge of Java , embedded Linux environments and dependency management to ensure stability, performance and long-term maintainability.

• Strong experience with Java, including migrations between major versions
• Solid background working with embedded or low-level systems on Linux
• Experience updating and managing critical dependencies such as Jetty or communication libraries
• Knowledge of TCP / IP, HTTP and serial communication protocols
• Familiarity with HTML and basic web configuration environments

You will be responsible for analyzing and migrating a complex legacy codebase from Java 8 to Java 17, updating critical dependencies and refactoring key components to ensure stability and compatibility. You will validate changes on embedded Linux environments, collaborate in code reviews, and apply best practices while supporting minor adjustments in a basic HTML configuration interface.

We work on a wide variety of projects, technologies, and sectors, allowing you to keep growing in different environments. If a project ends or you feel ready for a new challenge, we will find another one that aligns with your professional development.

We ask you to be available for key meetings. Need to leave for a doctor’s appointment or to pick up your child from school? No problem. We trust you to deliver quality work within your 40-hour workweek.

we usually go to the office 2 days a week, though this depends on the project and team, but we love seeing each other’s faces; the best stories always happen in the office!

🎓 We cover your certifications and reward technical achievements up to €1,400.

🏥 Private health and travel insurance.

💯 Full coverage for sick leave + 1 extra day off per month without medical leave.

🧘♀️ Free emotional, legal, and family support.

🏋️♀️ Gym discounts + sports compensation.

💳 Flexible remuneration : meals, transport, childcare, etc.

up to €6,000 per candidate and €5,000 per client.

🌴 23 working days of vacation.

🗣️ Free language courses : English, Spanish, Catalan and German.

We will discuss it during the first call. If it is important to you, feel free to ask! 💬

WOULD YOU LIKE TO BECOME AN ERNIan? APPLY NOW! 🚀