Senior Java Backend Engineer - Cloud-Native Microservices

Improving South America; Buenos Aires; Hybrid; ARS 138,361,000 - 199,855,000; Full time

Benefits offered by this job

Professional growth

Competitive compensation

Exciting projects

Flextime

Job summary

AgileEngine in Argentina is seeking a Backend Developer to design, build, and maintain scalable systems using Java/Kotlin, Spring Boot, and AWS on a modern stack (GraphQL, MongoDB, Aurora MySQL). You will collaborate with product, design, and data teams to deliver high-performance services and observability capabilities.

The role requires strong English and Spanish communication, hands-on experience with microservices, and a focus on cost-savings and compliance tooling.

Qualifications

• 3+ years of backend-focused software development.
• Proficiency in Java and/or Kotlin.
• Experience with MongoDB Atlas and relational databases (Aurora MySQL).
• Experience building cloud-native systems on AWS.
• Spring Boot and GraphQL API experience.
• Experience with microservices architecture.
• Strong English and Spanish communication skills.
• Familiarity with Terraform, Kafka or SQS is a plus.

Responsibilities

• Take on lower-priority engineering work including compliance and maintenance, cost-savings, observability.
• Design, build, and maintain scalable, performant software systems.
• Contribute to system architecture and design with data-driven validation.
• Participate in code reviews and design reviews.
• Collaborate with cross-functional partners including engineers, product managers, data scientists, and designers.
• Work with Product Manager and engineers to clarify requirements and perform mid-level design work.

Skills

Java

Kotlin

Spring Boot

GraphQL

MongoDB

Aurora MySQL

AWS

REST API

Microservices

English

Spanish

Netflix DGS

Tools

Terraform

Kafka

SQS

GraphQL (Netflix DGS)

Job description

• Architect and develop high-performance backend services using NestJS, ensuring scalability and maintainability


• Design and optimize PostgreSQL database schemas and query performance


• Implement complex business logic and integration patterns for financial service workflows


• Create and maintain RESTful APIs with exceptional performance characteristics


• Develop robust data modeling strategies that support complex financial service configurations


• Lead backend system design and technical decision-making


• Leverage AWS cloud services to build scalable and reliable infrastructure


• Mentor junior engineers and contribute to the overall engineering team culture


• Implement comprehensive testing strategies, including unit and integration testing


• Establish and maintain backend observability and monitoring infrastructure


• Collaborate closely with frontend, product, and design teams to ensure seamless system integration

You'll be a great fit if you have:

• 7+ years of professional Node.js development experience


• Extensive experience with NestJS framework


• 6+ years of professional experience with PostgreSQL and relational database design


• Fluency in English & Spanish (Must). The team primarily communicates in Spanish, so strong written and verbal Spanish skills are essential.


• Proven track record of designing scalable, high-performance backend systems


• Strong experience with RESTful API design and implementation


• Expertise in database optimization and performance tuning


• Comprehensive knowledge of backend testing methodologies


• Amazon EC2


• Amazon RDS


• AWS Lambda


• Amazon S3


• AWS CloudWatch


• Infrastructure as Code (CloudFormation or Terraform)


• Experience with microservices architecture


• Strong debugging and systems troubleshooting skills

Bonus points if you have:

• Knowledge of the financial services domain


• Backend observability tools experience

Need only Argentina candidates who speak both fluent English and Spanish

AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards.

WHY JOIN US

If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!

ABOUT THE ROLE

We are looking for a Backend Developer to design, build, and maintain scalable systems for a Product-led engineering team. This person works in Java and/or Kotlin with Spring Boot, GraphQL, MongoDB, and Aurora MySQL on AWS, covering everything from operational tooling to system architecture. Comfort picking up compliance, cost-savings, and observability work matters here.

MUST HAVES

• 3+ years of professional, backend-focused software development experience.


• Proficiency in Java and/or Kotlin.


• Proficiency in a modern NoSQL database, MongoDB on Atlas.


• Proficiency in a modern relational database, Aurora MySQL on AWS.


• Experience building cloud-native distributed systems on AWS.


• Experience with the Spring Boot framework.


• API development with GraphQL (Netflix DGS).


• Experience building and operating large-scale, high-performance, and resilient systems on a major cloud platform.

NICE TO HAVES

• Event-driven system development, ideally with Apache Kafka and/or SQS.


• AI-assisted coding experience.


• Terraform.


• Experience building microservices.


• API development with gRPC and REST.

WHAT YOU WILL DO

• Take on lower-priority engineering work the team lacks bandwidth for, including compliance and engineering maintenance, cost-savings, observability, experiment clean-up, and operational tool development.


• Design, build, and maintain scalable, performant, and reliable software systems.


• Contribute to system architecture and technical design, validating solutions through data and experimentation where appropriate.


• Participate in code reviews and design reviews to maintain high engineering standards.


• Collaborate closely with cross-functional partners, including software engineers, product managers, data scientists, and designers.


• Partner with a Product Manager and fellow engineers to clarify requirements and perform mid-level design work, focusing primarily on coding, testing, and documentation.

PERKS AND BENEFITS

• Professional growth: Mentorship, TechTalks, and personalized growth roadmaps.


• Competitive compensation: USD-based pay with education, fitness, and team activity budgets.


• Exciting projects: Modern solutions with Fortune 500 and top product companies.


• Flextime: Flexible schedule with remote and office options.