Sr./Staff Backend Engineer - Java

oscilar· Engineering
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🌍 Remote📍 Brazil - RemoteFullTime

About this role

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.

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.

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.

If you are passionate about backend development, real-time streaming, and scalable data systems, join us at Oscilar and make an impact.

Frequently Asked Questions

Is the salary disclosed for the Sr./Staff Backend Engineer - Java position at oscilar?
The salary for this Sr./Staff Backend Engineer - Java role at oscilar is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Is the Sr./Staff Backend Engineer - Java job at oscilar remote?
Yes, this Sr./Staff Backend Engineer - Java position at oscilar is remote, with team members based in Brazil - Remote. You can work from home or anywhere in the supported regions.
Is the Sr./Staff Backend Engineer - Java role at oscilar full-time or part-time?
This is listed as a FullTime position. It is posted as a Sr./Staff Backend Engineer - Java role in the Engineering department at oscilar.
Which team or department does the Sr./Staff Backend Engineer - Java at oscilar belong to?
This Sr./Staff Backend Engineer - Java position is part of the Engineering department at oscilar. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Sr./Staff Backend Engineer - Java position at oscilar?
Click the "Apply Now" button on this page. You will be redirected to oscilar's official application portal hosted on ashby where you can submit your application directly.
When was the Sr./Staff Backend Engineer - Java job at oscilar posted?
This Sr./Staff Backend Engineer - Java position at oscilar was posted on Dec 18, 2025. Apply as soon as possible — early applications are often reviewed first.
Sr./Staff Backend Engineer - Java
oscilar
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