Technical Lead – Backend Java Engineer (f/m/d)

October 21, 2026

Office

Lead

Madrid, Spain

Indeed

Keep in mind

Office-only work

Description

Technical lead role for a large-scale Java/Jakarta EE platform running on JBoss EAP 8, combining hands-on backend development with technical leadership of the backend domain. The engineer sets the technical direction for REST/SOAP integrations, messaging, persistence and release management, working closely with Product Owners, Architects, QA, Frontend and Operations teams. Strong mentoring, code review and stakeholder communication are expected, along with a pragmatic mindset and focus on engineering excellence. The position is full-time, based in Madrid.

Gender markers in the title: (f/m/d)

In accordance with European anti-discrimination legislation, this job is open to all candidates

Ffemale

Mmale

Ddiverse

Responsibilities

Lead design, development and maintenance of Java 21 / Jakarta EE backend applications on JBoss EAP 8
Design scalable, maintainable and reliable software solutions aligned with business and architectural requirements
Drive technical decisions around REST APIs, SOAP integrations, messaging, persistence and application architecture
Collaborate with Product Owners, Architects and stakeholders to translate business requirements into technical solutions
Own and coordinate application releases, deployments, environment readiness and production rollout
Mentor engineers through technical guidance, code reviews, knowledge sharing and coaching
Promote engineering best practices, coding standards, architecture governance and continuous improvement
Lead development of integrations using REST, SOAP, JMS and messaging systems
Work with Oracle databases on data modeling, performance tuning and schema evolution
Support frontend teams when backend integration expertise is required
Collaborate with QA, DevOps and Operations teams to ensure smooth delivery and production readiness

Requirements

Expert-level Java development with hands-on experience in Java 21 and Jakarta EE
Practical experience with JPA/Hibernate and Maven multi-module applications
Solid understanding of software architecture, design patterns and enterprise application design principles
Experience building and consuming REST and SOAP services using JAX-RS and JAX-WS
Strong experience with Oracle databases, SQL optimization, schema design and data persistence
Experience with messaging and integration technologies including JMS and enterprise messaging platforms
Strong knowledge of testing practices with JUnit, Mockito and integration testing frameworks
Experience with release management, deployment processes and production support
Ability to lead technical discussions, make architectural decisions and communicate with technical and non-technical stakeholders
Strong mentoring, coaching and code review skills
Ability to balance hands-on engineering with technical leadership responsibilities