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Sr./Staff Backend Engineer - Java

Brazil · Job Posted February 18, 2026
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Job Description

As a Backend Engineer at Oscilar, you will be responsible for designing, building, and maintaining the core infrastructure that powers our SaaS platform. You will collaborate closely with cross-functional teams, ensuring the delivery of highly reliable, low latency, and scalable services that meet the needs of our global enterprise clients.

Job Responsibility

  • Design and develop scalable, high-performance, low-latency backend services using Java and AWS technologies
  • Collaborate with the product management, frontend, and QA teams to define technical requirements and ensure smooth integration with other components of the platform
  • Optimize and enhance existing services to achieve maximum performance, reliability, and maintainability
  • Identify and resolve bottlenecks in the system, ensuring optimal resource utilization and system stability
  • Implement best practices for code quality, testing, and deployment, including continuous integration and continuous deployment (CI/CD) pipelines
  • Proactively monitor the health and performance of backend services, taking necessary actions to mitigate potential issues
  • Provide technical guidance and mentorship to junior team members.

Requirements

  • Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field
  • 5+ years of experience in backend software development, with a focus on Java and AWS technologies
  • Strong experience in building and operating low latency, high scale services in a distributed environment
  • Proficient in Java programming, with a deep understanding of its ecosystem and related frameworks
  • Knowledge of microservices architecture, containerization technologies (Docker, Kubernetes), and distributed data systems (Kafka, Clickhouse)
  • Familiarity with RESTful API design, and a strong understanding of security best practices
  • Experience with CI/CD tools (Jenkins, Git, Maven, Gradle) and agile development methodologies
  • Excellent problem-solving skills, attention to detail, and a strong ability to work independently or as part of a team
  • Strong communication skills, both written and verbal.

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