Java developer for payroll platforms

Amaris Consulting | Part of Mantu; Barcelona; Remote; EUR 65,000 - 90,000; Full time

Benefits offered by this job

Remote work options

Meal vouchers

Transport support

Private health insurance

Job summary

Amaris Consulting | Part of Mantu is seeking a Senior Java Developer to design, develop, deploy, and operate scalable SaaS platforms in an international, agile environment.

You will work in multidisciplinary squads, delivering robust RESTful services, integrating Kafka/RabbitMQ, and strengthening CI/CD pipelines while optimizing cloud deployments and observability. English-domain collaboration is essential for global teams.

Qualifications

• 7+ years of backend experience with Java and Spring Boot.
• Strong OO, design patterns, SOLID principles.
• Experience with microservices, REST APIs, and CI/CD.
• Experience in cloud environments (Azure preferred).
• Professional English and collaboration with international teams.

Responsibilities

• Design, develop, and maintain microservices using Java and Spring Boot.
• Design and implement RESTful APIs, focusing on performance and security.
• Integrate messaging systems like Kafka or RabbitMQ.
• Build and improve CI/CD pipelines for secure software delivery.
• Operate services in cloud environments with scalability and cost efficiency.
• Implement monitoring, logging, and alerting to improve observability.
• Analyze and resolve production incidents and perform root cause analysis.
• Participate in on-call/incident management when applicable.

Skills

Java 11+

Spring Boot

REST APIs

Microservices

CI/CD

Cloud (Azure)

English fluency

Kafka/RabbitMQ

SQL/NoSQL

Tools

Hibernate/JPA

Spring Framework

Git

Maven/Gradle

Azure DevOps

GitLab CI

Jenkins

GitHub Actions

Job description

Join Amaris Consulting and work on payroll and human resources management platforms serving thousands of users worldwide. Be part of an international team, grow in an agile environment, and develop your career within a global group that values innovation, collaboration, and talent. As a Senior Java Developer, you will play a key role in the design, development, deployment, and operation of highly scalable, secure, and resilient SaaS platforms. You will be a core member of multidisciplinary squads, combining your backend development expertise with DevOps practices to build and operate business-critical services across the entire software lifecycle.

Задачи:

• Design, develop, and maintain microservices using Java and Spring Boot.


• Design and implement RESTful APIs, ensuring performance, security, and maintainability.


• Integrate and consume messaging systems (Kafka/RabbitMQ) to support event-driven architectures.


• Build, maintain, and improve CI/CD pipelines to ensure fast, secure, and reliable software delivery.


• Operate services in cloud environments, ensuring scalability, security, and cost efficiency.


• Implement and optimize monitoring, logging, and alerting solutions to improve system reliability and observability.


• Analyze and resolve production incidents, performing root cause analysis and implementing preventive measures.


• Participate in on-call / incident management (when applicable) to ensure platform availability.

Требования:

• 7+ years of experience as a Backend Engineer working with Java (Java 11 or higher) and Spring Boot.


• Strong proficiency in Core Java and OOP principles, as well as design patterns and SOLID principles.


• Experience with Spring Framework (Boot, MVC, Security) and Hibernate/JPA.


• Solid understanding of microservices architectures and distributed systems.


• Experience in designing and implementing RESTful APIs and microservices-based services.


• Good understanding of memory management and performance optimization in Java applications.


• Experience with message queuing systems (Kafka, RabbitMQ) and event-driven architectures.


• Experience with SQL and/or NoSQL databases.


• Hands-on experience with CI/CD tools (Azure DevOps, GitLab CI, Jenkins, GitHub Actions, etc.) and use of Git, Maven/Gradle.


• Experience working in cloud environments, ideally Azure (AWS/GCP also valued).


• Strong knowledge of software engineering best practices: clean code, design patterns, testing (JUnit, Mockito), code review, documentation.


• Professional level of English, able to collaborate with international teams - your day-to-day work will be in English.


• Strong problem-solving skills and analytical thinking.


• Excellent communication skills and ability to work in multidisciplinary teams (engineering, architecture, product, operations).


• Proactive attitude, strong sense of ownership, and focus on continuous improvement.


• Comfortable working in agile environments (Scrum, Kanban).


• Будет плюсом: Experience in financial services, payroll, HR tech or other highly regulated sectors; Advanced knowledge of event-driven architectures (Kafka, RabbitMQ, etc.); Experience with DevSecOps tools (SAST, DAST, dependency analysis, secrets management); Familiarity with Site Reliability Engineering (SRE) practices (SLIs/SLOs, error budgets); Experience with API gateways, service mesh, or service discovery tools

Условия:

• Career growth: 70% of our senior leaders started in junior positions.


• Continuous learning: access to our Technology Academy, Udemy courses, webinars, and company-funded certifications.


• Flexibility: remote work options, flexible working policies, and social benefits (meal vouchers, transport, childcare support, private health insurance, etc.).


• Well-being: our WeCare program supports employees in critical situations.


• Personal development: annual training budget to boost both your hard and soft skills.