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Oscilar

Sr./Staff Backend Engineer - Java

Brazil - Remote
Salary
R$393.8K - R$574.3K
Level
Staff
Work type
Remote · Brazil only

Not stated in the posting: visa.

Open. First seen 2 October 2026.

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About the role

Oscilar's standard text

Shape the future of trust in the age of AI
At Oscilar, we're building the most advanced AI Risk Decisioning™ Platform. Banks, fintechs, and digitally native organizations rely on us to manage their fraud, credit, and compliance risk with the power of AI. If you're passionate about solving complex problems and making the internet safer for everyone, this is your place.

Why join us:

  • Mission-driven teams: Work alongside industry veterans from Meta, Uber, Citi, and Confluent, all united by a shared goal to make the digital world safer.
  • Ownership and impact: We believe in extreme ownership. You'll be empowered to take responsibility, move fast, and make decisions that drive our mission forward.
  • Innovate at the cutting edge: Your work will shape how modern finance detects fraud and manages risk.

About the role

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.

Responsibilities

  • 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.

Benefits

  • Compensation: Candidates are hired as CLT and are offered competitive salary
  • Stock Options: Candidates will receive stock options
  • Benefits: 100% of your Medical/Dental (Care Plus) for you and your dependents; 100% Life / LTD (Prudential)
  • Caju Card: We offer a Caju Card for monthly meal allowance
  • Flexibility: Remote first culture.
  • Culture: Family-Friendly environment; Regular team events and offsites.
  • Development: Unparalleled learning and professional development opportunities.
  • Impact: Making the internet safer by protecting online transactions.

What this role asks for

Particular to this role

Agile · Gradle · Maven

Rare in Oscilar's other 10 open postings.

Standard for backend roles

AWS · Java · Kubernetes

Common in backend postings at any company.

73% of this description is written for the role. The rest is Oscilar's standard text, folded away below.

Compared with Oscilar's other open jobs.

The team: Backend Engineering HIRES STEADILY

This role is one of 3 open in Backend Engineering. 1 was posted in the last 30 days and the oldest in December: a team that hires all year rather than one being built.

WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS

AWS (3 of 3), CI/CD (3 of 3), ClickHouse (3 of 3), Docker (3 of 3), Java (3 of 3), Kafka (3 of 3), Kubernetes (3 of 3)

OTHER ROLES ON THIS TEAM

From the team and dates on Oscilar's own job board.

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