Senior Integration Engineer (Java / AWS)

Description

Job Summary: We are seeking a full-stack developer with experience in integrations, REST APIs, data migrations, and banking SSO. Key Highlights: 1. Full-stack experience with a focus on integrations 2. Proficiency in external REST APIs and OAuth authentication 3. Knowledge of data migrations and cloud databases * 4+ years of full-stack experience focused on integrations. * At least 3 projects where external REST APIs were consumed in enterprise environments with OAuth authentication. * At least 1 data migration project: field mapping, validation, reconciliation, and incremental loading. * Experience with Microsoft Entra ID (formerly Azure AD) in banking SSO implementations. * Familiarity with fault-tolerant integration patterns: circuit breaker, retry with exponential backoff, dead letter queues. * Prior experience migrating data from legacy systems (SQL Server, Oracle) to cloud databases. **Required Technical Skills** Java 17+ · Spring Boot 3 · Feign / RestTemplate · OAuth 2.0 / OIDC · AD / LDAP · Entra ID · React 19 AWS Lambda · AWS S3 · ETL / Data Migration · Multiple REST Integrations · Circuit Breaker (Resilience4j) · API Contract Testing Work Location: Hybrid in San Isidro, Lima