Senior Backend Developer - Java - Pharmaceutical sector
ERNI Spain
Posted: January 22, 2026
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Job Description
Ready to build a centralized testing platform for pharmaceutical quality and traceability?
Join our expert team to work on the pharmaceutical sector, contributing to the development of a centralized testing and KPI solution for testing processes. You will apply your knowledge of Java and Spring Boot to design secure scalable backend services integrating PostgreSQL container orchestration and infrastructure as code. This role can be based in Madrid or Barcelona and follows a hybrid working model.
At ERNI, you are never just a number. Even if you work on an external project, you will feel part of the team and always supported.
How do we make this happen?
With people. Besides your team and manager, you will have several support figures like a godparent, who will help you with the practical and administrative aspects of daily life during your first 6 months.
And the second most important person after you, your mentor, who will guide you through your entire onboarding and career at ERNI. You will have regular 1:1 meetings with them, and recurrently, you will work on your development plan to define your short-, medium-, and long-term goals.
At ERNI, we highly value experience and technical knowledge. As a senior profile, you will have the space to continue growing, whether by deepening your technical skills or having greater influence on project decisions, with autonomy and the opportunity to share knowledge with other experts.
And if you are interested in mentoring, there is also space for that: supporting other ERNIans while still focusing on the technical excellence that sets us apart.
What you will bring
5–10 years of backend software engineering experience with Java (11 17 21) and Spring Boot
Solid knowledge of PostgreSQL including schema design query optimization and stored procedures
Hands-on experience with Docker and orchestration using Kubernetes or OpenShift
Proven experience with CI/CD pipelines DevOps practices and Terraform for infrastructure as code
Experience with AWS services software testing automation and familiarity with GxP-validated use cases
You will be responsible for design develop and maintain business logic and backend services using Java and Spring Boot implement unit and integration tests and documentation support and optimize development and production environments including CI/CD pipelines automate recurring maintenance tasks and collaborate with product owner architect and team to deliver a centralized testing KPI platform aligned with regulatory requirements.
What if the project ends?
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.
Our working model
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.
Our model is hybrid: 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!
You will also enjoy:
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.
Referral bonuses: up to €6,000 per candidate and €5,000 per client.
23 working days of vacation.
️ Free language courses: English, Spanish, Catalan and German.
And the salary?
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!