Senior Backend Developer (Java | ELK )
Senior backend developer on a large-scale digital platform in downtown Lisbon (hybrid, 3x/week on-site). Day to day: designing RESTful APIs and backend services in Java (WildFly, EJB, Jakarta), with Elasticsearch as the core search engine, plus GitLab CI/CD, Docker, Redis, and MongoDB in an agile team.
- Compensation
- Not disclosed
- Location
- Portugal
- Work setup
- Hybrid
- Seniority
- Senior
- Employment
- Contract
- Experience
- 7+ years
- Category
- Backend
- Posted
Skills
Must have
- 7+ years of backend development experience
- Strong expertise in Java and related frameworks
- Hands-on with ELK Stack (ElasticSearch central to the platform)
- Experience with CI/CD pipelines (GitLab)
- Proficient in Docker, Redis, MongoDB, and Velocity Framework
- Familiarity with Agile/Scrum methodologies
- Degree in IT or equivalent (mandatory)
- English level B2 or higher
- Available to work 3x/week on-site in Lisbon
Nice to have
- Experience with secure coding practices
- Background in performance tuning and system optimization
Full description
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Senior Backend Developer (Java | ELK | GitLab CI/CD) – Lisbon | HybridWe’re looking for a Senior Backend Developer to join a highly skilled team working on a large-scale digital platform in downtown Lisbon.
This is a hybrid role (3x/week on-site), where you’ll work hands-on with Java, WildFly, ELK (ElasticSearch, Logstash, Kibana), EJB, and Jakarta, contributing to backend architecture and DevOps processes. ElasticSearch is a core part of the product — not just for logs, but platform-wide search.
You’ll be expected to bring technical leadership, write robust and scalable code, and collaborate with cross-functional teams in an agile environment.
What you’ll do:
- Design and implement RESTful APIs for a large-scale platform
- Develop backend services using Java, WildFly, EJB, Jakarta
- Work with ElasticSearch as a core search engine
- Maintain and optimize CI/CD pipelines in GitLab
- Collaborate with DevOps and QA teams to ensure high-quality deployments
- Apply secure coding practices and contribute to performance optimization
- Support Agile/Scrum ceremonies and sprints
- Use tools like Docker, Redis, MongoDB, and Velocity in daily development
What we’re looking for:
- 7+ years of experience in backend development
- Strong expertise in Java and related frameworks
- Hands-on with ELK Stack (ElasticSearch is central to the platform)
- Experience with CI/CD pipelines (GitLab)
- Proficient in Docker, Redis, MongoDB, and Velocity Framework
- Familiarity with Agile/Scrum methodologies
- Degree in IT or equivalent (mandatory)
- English level B2 or higher
- Available to work 3x/week on-site in LisbonNice to Have:
- Experience with secure coding practices
- Background in performance tuning and system optimization
Location: Lisbon, Portugal (hybrid – 3x/week on-site)
Type: Full-time | Long-term project
Seniority level
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