Senior Backend Developer at Celfocus

Porto, , Portugal -

Full Time

Start Date

Immediate

Expiry Date

18 Feb, 26

Salary

0.0

Posted On

20 Nov, 25

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Java, Microservices, Kubernetes, API Gateways, Docker, Site Reliability Engineering, Prometheus, Grafana, ELK Stack, Oracle Database, Oracle SOA Suite, Terraform, Ansible, Identity and Access Management, Performance Optimization, Agile

Industry

IT Services and IT Consulting

Description

Make an impact by working for sectors where technology is the enabler, everything is ground-breaking and there’s a constant need to be innovative. Create and enhance projects in Java, Python, Angular, PHP, .NET and so much more while diving in the world of Blockchain, Artificial Intelligence, Data Science, Security and Internet of Things. Be part of the team that combines business knowledge, technological edge and a design experience. Our different backgrounds and know-how are key in developing solutions and experiences for digital clients. Face challenges and learn other ways of thinking and seeing the world - there’s always room for your energy and creativity. About the role We are seeking a highly skilled and experienced Senior Developer with the ability to work independently, a strong sense of responsibility, and proven leadership abilities. As a part of your job, you will: Design, implement, and maintain scalable and robust backend services using Java within microservices architecture. Develop and manage containerized applications using Docker and orchestrate deployments via Kubernetes. Integrate and manage API Gateways (e.g., Kong) to ensure secure and efficient API communication. Participate in the definition and evolution of system architecture, ensuring alignment with business requirements and technical best practices. Implement monitoring, logging, and alerting using tools like Prometheus, Grafana, and the ELK stack. Apply Site Reliability Engineering (SRE) principles to improve the system's performance, reliability, and incident response. Write clean, maintainable, and well-documented code following industry standards and team practices. Perform code reviews and provide mentorship to junior developers. Collaborate closely with product owners, architects, and cross-functional teams in an Agile environment. Work with Oracle databases and Oracle SOA Suite, when applicable, for integration with existing enterprise systems. What are we looking for? Extensive experience in developing and managing microservices architectures using Java. Proficient in working with containerized infrastructures, especially with Kubernetes. In-depth knowledge and hands-on experience with API Gateways. Nice to have: Familiarity with SOA architectures. Experience with Oracle SOA Suite, other ESB tools, and Oracle Database. Expertise in Site Reliability Engineering (SRE) practices, including evolving Terraform and Ansible scripts. Hands-on experience with Kong API Gateway or similar tools. Experience with Identity and Access Management (IAM) solutions, particularly Keycloak. Proficiency with observability and monitoring tools like Grafana, Prometheus, and ELK stack. Background in performance optimization and related techniques. Personal traits Ability to adapt to different contexts, teams, and Clients; Teamwork skills but also a sense of autonomy; Motivation for international projects and ok if travel is included; Willingness to collaborate with other players; Strong communication skills. At Celfocus, we are committed to cultivate a diverse and inclusive workplace. As an equal-opportunity employer, we welcome applicants of all backgrounds, gender identities, and abilities. We are dedicated to providing reasonable accommodations for candidates with specific needs. If you require any adjustments during the selection process, please inform our Talent Acquisition Team. Come join the Team!

Responsibilities

Design, implement, and maintain scalable backend services using Java within a microservices architecture. Collaborate with cross-functional teams to ensure alignment with business requirements and technical best practices.