Senior Backend Java Developer (Hexagonal Architecture)

Description

DESCRIPTION **Who are we?** We are **Kairós**, a different technology company. Yes, we help our clients with their digital and methodological transformation challenges, but what truly defines us is **how we do it**: by putting people at the center. We have been recognized as a **Great Place To Work® certified company** since 2019 — for the sixth consecutive year — ranking **5th in 2024**. Our values of **courage, empathy, innovation, and joy** shape how we work every day. We are over 850 people (developers, data engineers, strategists, etc.), and now we’re looking for someone to join this brilliant and diverse team. At Kairós, you’re not just another number. We know you by your name, care about your personal balance, and want you to grow with us. **Your mission at Kairós** We’re looking for a passionate and technically skilled **Java Backend Developer** to join our teams and continue building robust, scalable solutions. Here, you won’t just write code; you’ll shape the technical approach to complex challenges, ensuring quality and excellence in every delivery. * **Impactful development:** You’ll actively contribute to ambitious software projects, leveraging your 4+ years of experience. * **Technical excellence:** You’ll implement solutions using **Java 1\.8 or higher** and **Spring Boot**, ensuring clean and maintainable code. * **Modern architecture:** You’ll work in **microservices and REST API** environments, applying **hexagonal architecture** principles. * **Software quality:** You’ll apply **Clean Code and S.O.L.I.D.** principles daily to ensure product robustness. * **Data management:** You’ll handle **SQL and NoSQL databases**, integrating data flows with **Kafka**. * **Operations and deployment:** You’ll confidently operate in **Kubernetes and OpenShift** environments, using **Git** as your core version control tool. **What will make you successful** **Education and Experience** * Minimum **4 years of experience** participating in software development projects. * Proven experience working with **Java 1\.8 or higher**. * Hands-on experience with **Spring Boot** within the past year. * Real-world experience in **hexagonal architecture** projects. * Track record working with **SQL and NoSQL databases**, and handling data in **Kafka**. * **Mandatory:** Legal permission to reside and work in Spain. **Technical Competencies (Must-have)** * In-depth knowledge of **microservices and REST APIs**. * Routine use of **Git** for version control. * Technical experience with **SQL and NoSQL databases**, and data handling in **Kafka**. * Prior implementation of **Clean Code and S.O.L.I.D.** principles. * Technical experience with **Kubernetes and OpenShift**. **Nice-to-have** * Comfort working in **asynchronous communication** environments. * Experience developing with **cloud technologies**. * Participation in defining API strategies and familiarity with specifications such as **OpenAPI, AsyncAPI, or RAML**. **Benefits that make a difference** **Meaningful professional growth** * Ongoing corporate training. * Free **English classes** in small groups. * Continuous mentoring and personalized support. * Participation in tech conferences, events, and communities. **Real balance and flexibility** * **23 vacation days** + December 24 and 31 off. * 1 day for professional events and **3 flexible conciliation days**. * **Reduced working hours in August**, and **intensive schedule every Friday** throughout the year. * **100% remote work:** You’ll work remotely, with some flexibility to adapt your schedule — though this may depend on your assigned project. **Personal benefits and care** * **Flexible compensation** (Cobee) for meals, transportation, training, and childcare. * **Health insurance** with Cigna, Adeslas, or Sanitas. * **Wellness program** supporting emotional and psychological well-being. **\#TRY \#THINK \#FEEL \#ENJOY** At Kairós, we firmly believe in the importance of equality and diversity in the workplace. We are committed to creating an inclusive and respectful environment where all employees feel valued and empowered to reach their full potential — regardless of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or any other characteristic protected by law. **Apply now and join the Kairoseros and Kairoseras team!**