Senior Backend-Focused Fullstack Engineer | Java/Spring | Remote LATAM

FusionHit; Comisión de Fomento de Perú; Remote; ARS 136,828,000 - 182,437,000; Full time

Benefits offered by this job

Great Place to Work

Work from home

Professional development

Flexible schedule

Sick days

Job summary

FusionHit is seeking a Senior Fullstack Software Engineer (Backend-focused) to lead backend architecture and modernization for Java/Spring Boot services in a remote LATAM role. You’ll drive API design, microservices, and PostgreSQL data layers while coordinating with frontend, DevOps, and product teams.

The ideal candidate has 6+ years in backend/fullstack engineering, strong Java/Spring Boot experience, and familiarity with CI/CD, testing, and observability using Datadog.

Qualifications

• BS/MS in Computer Science, Software Engineering, or related field.
• 6+ years of Backend/Fullstack Engineering experience.
• 5+ years with Java and Spring Boot building REST APIs and microservices.
• Strong Postgres data layer experience and API design for high traffic retail systems.
• Working knowledge of modern JS/TS frontend frameworks to troubleshoot across the stack.
• Experience modernizing legacy backends with phased strategies.
• Automated testing for backend services and E2E awareness with Playwright/Jest.
• Experience managing CI/CD pipelines in GitLab and monitoring with Datadog.
• Retail/store operations or supply chain systems experience is a plus.
• Excellent English communication; MST overlap for availability.

Responsibilities

• Lead backend architecture decisions and modernization strategy for Java/Spring Boot services.
• Design scalable, secure REST APIs and microservices on Postgres-backed data stores.
• Drive best practices in code quality, testing, and CI/CD automation.
• Collaborate cross-functionally with frontend, DevOps, and product teams across multiple JS stacks.
• Mentor mid-level engineers and promote engineering excellence.
• Ensure performance optimization and monitoring using Datadog.
• Lead phased migration from legacy backend systems to modern service architecture.
• Incorporate stakeholder feedback and real-world retail workflows into system design.

Skills

Java

Spring Boot

REST APIs

PostgreSQL

Frontend basics

CI/CD (GitLab)

Observability (Datadog)

English communication

Education

BS/MS in Computer Science or related field

Tools

GitLab CI/CD

Datadog

Job description

FusionHit is seeking a Senior Fullstack Software Engineer (Backend-focused) to lead backend architecture and modernization for Java/Spring Boot services in a remote LATAM role. You’ll drive API design, microservices, and PostgreSQL data layers while coordinating with frontend, DevOps, and product teams.

The ideal candidate has 6+ years in backend/fullstack engineering, strong Java/Spring Boot experience, and familiarity with CI/CD, testing, and observability using Datadog.