As a Senior Java React Fullstack Software Engineer, you will own features end-to-end, from backend microservices through the user interface. You will make architecture and technology decisions that other engineers build on, working confidently across the stack from data model to UI. You will work within a modern Java/Spring Boot microservices backend and a Next.js/React frontend, deployed on AWS. We build AI directly into our products and expect engineers to use AI coding tools to accelerate development, always with sound engineering judgment and validation. You will collaborate daily with US-based engineering leadership in English and Spanish-speaking business stakeholders across Latin America.
Location: Latin America - 100% Remote. Working hours should overlap with U.S. business hours.
About the Company
Abstra is a fast-growing, Nearshore Tech Talent services company, providing top Latin American tech talent to U.S. companies and beyond. Founded by U.S.-bred engineers with over 15 years of experience,



Abstra specializes in sourcing skilled professionals across a wide range of technologies to meet our clients’ needs, driving innovation and efficiency.
What You’ll Do
- Own features end-to-end, from backend service design through the user interface, from technical design through production.
- Build and maintain backend services in Java 21 / Spring Boot 3, exposing internal APIs via gRPC/Protobuf and, where appropriate, REST.
- Build user-facing features in React/Next.js (TypeScript), integrating cleanly with backend APIs and following established frontend patterns.
- Design and evolve relational data models in PostgreSQL, including schema migrations and query performance tuning.
- Build event-driven features using Kafka where appropriate.
- Make architecture decisions, service boundaries, API contracts, data models, and UI/state patterns, that other engineers build on.
- Monitor and operate your services on AWS, following infrastructure patterns established by the De

📌 Senior Java (Argentina)
🏢 Abstra
📍 Argentina