Senior Java / Microservices Engineer ID Hibrido, CABA ID #00352

Werben HR; Buenos Aires; On-site; ARS 1,200,000 - 1,800,000; Full time

Job summary

Werben HR is seeking a Senior Java Engineer with 7+ years of experience to architect, develop, and scale high-performance distributed systems. You will work on production-ready microservices, event-driven architectures, and cloud deployments, ensuring clean code, reliability, and engineering excellence.

You will design and implement scalable microservices with Java/Spring Boot, integrate Kafka for event-driven flows, model MongoDB data, and deploy on OpenShift or AWS.

Qualifications

• 7+ years of hands-on software development experience with enterprise backend systems.
• Deep proficiency in Java (Java 8+), including modern concurrency, streams, and design patterns.
• Proven experience building production-grade applications using Spring Boot.
• Hands-on experience designing, developing, and operating distributed microservices.
• Solid understanding of Apache Kafka and event-driven integration patterns.
• Strong hands-on experience with MongoDB NoSQL modeling and query optimization.
• Familiarity with OpenShift and AWS for deployment, scaling, and monitoring.

Responsibilities

• Design, build, and maintain scalable microservices using Java and Spring Boot.
• Implement event-driven architectures and messaging integration using Apache Kafka.
• Design, query, and optimize NoSQL databases using MongoDB for backend services.
• Deploy, scale, and monitor containerized applications on OpenShift and/or AWS environments.
• Drive code quality through rigorous code reviews, unit testing, CI, and clean design principles.
• Diagnose complex technical issues, optimize backend performance, and troubleshoot distributed systems in production.

Skills

Core Java

Spring Boot

Microservices

Kafka

MongoDB

Cloud/OpenShift

System Architecture

Tools

OpenShift

AWS

Docker

Kubernetes

Job description

24 July, 2026

Argentina, CABA

About the Role

We are seeking a Senior Java Engineer with 7+ years of experience to join our engineering team. In this role, you will play a key part in architecting, developing, and scaling high-performance distributed systems. You will work on production-ready microservices, event-driven architectures, and cloud deployments, ensuring clean code, system reliability, and best engineering practices.

Key Responsibilities

Architecture & Development: Design, build, and maintain scalable, high-throughput microservices using Java and Spring Boot.

Event-Driven Systems: Implement event-driven architectures and messaging integration using Apache Kafka.

Data Modeling: Design, query, and optimize NoSQL databases using MongoDB for backend services.

Cloud & DevOps: Deploy, scale, and monitor containerized applications on OpenShift and/or AWS environments.

Technical Leadership & Quality: Drive code quality through rigorous code reviews, unit testing, continuous integration, and clean system design principles.

Problem Solving: Diagnose complex technical issues, optimize backend performance, and troubleshoot distributed systems in production.

Technical Qualifications

Senior Experience: 7+ years of hands-on software development experience with enterprise backend systems.

Core Java: Deep proficiency in Java (Java 8+), including modern concurrency, streams, functional programming, and design patterns.

Spring Framework: Proven experience building production-grade applications using Spring Boot and related ecosystem modules.

Microservices: Hands-on experience designing, developing, and operating distributed microservices architectures.

Event-Streaming / Messaging: Solid understanding of Apache Kafka and event-driven integration patterns.

Databases: Strong hands-on experience with MongoDB (NoSQL modeling, indexing, and query optimization).

Cloud Platforms: Familiarity with OpenShift and/or AWS (ECS, EKS, EC2, CloudWatch) for application deployment, scaling, and operational monitoring.

Soft Skills & Engineering Mindset

Analytical Thinking: Strong problem-solving mindset and ability to debug complex cross-system challenges.

Code Excellence: Passion for writing clean, maintainable, efficient, and well-tested code.

System Design: Deep understanding of software design principles (SOLID, DDD, fault tolerance, circuit breakers).

Collaborative: Excellent communication skills and comfortable working in fast-paced Agile team environments.

Nice-to-Have (Bonus)

Experience with CI/CD automation pipelines (Jenkins, GitHub Actions, GitLab CI).

Exposure to Kubernetes or Docker container orchestration.

Knowledge of relational databases (PostgreSQL/MySQL) alongside MongoDB.