Sr. Java Developer

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

Benefits offered by this job

20 paid days off per year

Flex Days: monthly team activities

Internal clubs (soccer, padel, running

cinema

Job summary

Promtior is seeking a Sr. Java Developer to join our Engineering team and drive the development of robust backend services.

You will build APIs using Spring and Spring Boot, focusing on efficiency, scalability, and clean design, while collaborating with cross-functional teams to deliver high-quality software. You will work with relational databases (JPA/Hibernate) and contribute to code reviews, testing, and continuous improvement across the full development lifecycle, from design through to

Qualifications

• Experience developing APIs or backend services.
• Strong knowledge of JVM performance and memory usage.
• Expertise in microservices and distributed systems.
• Familiarity with patterns like Circuit Breaker, idempotency, or Saga.
• Experience with Docker containers.
• Advanced English proficiency.

Responsibilities

• Develop and maintain Java backend services and APIs.
• Design and implement features using Spring/Spring Boot.
• Work with relational databases and JPA/Hibernate.
• Collaborate with developers and product/tech teams; participate in code reviews.
• Support full development cycle from design to production deployment.
• Focus on quality, performance, and maintainability.

Skills

Java

Spring Framework

Spring Boot

REST APIs

Microservices

Distributed systems

JVM performance

Memory management

Circuit Breaker

Idempotency

Saga patterns

English proficiency

Tools

Docker

Job description

Promtior is at the forefront of the Agentic AI revolution, delivering cutting-edge solutions that transform businesses across industries — bridging technology and people to turn AI into a real competitive advantage. Since 2023, we've helped organizations boost operational efficiency through tailored Agentic AI solutions, from discovery and development to full implementation, across three core lines: AI Product Delivery (predictive analytics, intuitive automation, AI-driven chatbots, image processing), AI Department as a Service (LATAM-based teams that integrate directly with our clients' teams), and AI Adoption Consulting (helping companies find and act on AI opportunities across their business).

We're a team held together by genuine relationships, constant exchange, and shared learning. We believe innovation happens when people feel included and collaborate with purpose, and we aim for professional growth to go hand in hand with personal well-being.

About the Role

We're looking for a Sr. Java Developer to join our Engineering team and support the growth of our technology solutions.

Key Responsibilities

You will develop and maintain backend services in Java for production applications, building APIs and backend components using Spring and Spring Boot. You will take part in the design and implementation of features with a focus on quality, performance, and maintainability, working with relational databases and ORMs (JPA/Hibernate). You will collaborate with other developers and with product and technology profiles, participate in code reviews, testing, and continuous improvements, and support the full development cycle, from design through to production deployment.

Required Experience

• Prior experience developing APIs or backend services.
• Advanced knowledge of performance, JVM, and memory usage.
• Expertise in microservices and distributed systems.
• Conceptual knowledge of patterns such as Circuit Breaker, idempotency, or SAGA.
• Experience working with containers (Docker).
• Continuous learning attitude and technical curiosity.
• Advanced English Level.
• 20 paid days off per year.
• Flex Days: monthly team activities.
• Internal clubs (soccer, padel, running, cinema).

Location