Sela is a integral cloud partner, dedicated to guiding our clients in their cloud journey. With our deep relationships with top cloud platforms (AWS, GCP, Azure) and our expertise in building resilient cloud infrastructure, we enable our clients to 'Cloud Better.' Our team has over three decades of experience delivering excellence and thought leadership to clients. We take pride in our strong engineering culture, our drive for excellence, and our supportive team.

What We Are Looking For

We're looking for a Java engineer who is genuinely good at modernizing legacy enterprise applications — the kind of work where you inherit a decade-old codebase running on Java 8 and an application server nobody wants to talk about, and you get it onto a modern JDK and Spring Boot without breaking the business.

This is not greenfield work. You'll be reading a lot of unfamiliar code, building test coverage where none exists, untangling dependency graphs, and making incremental changes that ship safely.



The engineers who do this well are the ones who are patient with old code, rigorous about verification, and able to explain tradeoffs to a client who is nervous about touching a system that has been running fine for eight years.

You'll work alongside network architects, cloud architects, software developers, and security engineers on high-impact client projects. We provide many opportunities for growth and will cover the cost of relevant education and certification.

What You'll Do

- Migrate enterprise Java applications from legacy JDKs (7/8/11) to modern LTS releases (17/21)
- Move applications off traditional application servers (WebSphere, WebLogic, JBoss/EAP, Tomcat) onto Spring Boot
- Handle the unglamorous parts: javax → jakarta namespace migrations, Ant/Ivy → Maven/Gradle build conversions, dependency and CVE remediation
- Build characterization and regression tests around code that has none, so migrations can be v

📌 Enterprise Java Engineer (Argentina, Remote)
🏢 Sela
📍 Argentina