Sr Software Engineering Analyst (Rust/Java)

Sinch; Brasil; On-site; BRL 300,000 - 520,000; Full time

Benefits offered by this job

Health insurance

Flexible benefits

Maternity leave

Paternity leave

Daycare support

Wellbeing programs

Life insurance

Disability support

Birthday leave

Job summary

Sinch is seeking a Senior Backend Software Engineer to design, build, and maintain distributed backend services that process high-volume messaging traffic to detect and prevent fraud across SMS, RCS, and WhatsApp.

You will work on scalable systems using event-driven architectures, distributed data processing, and cloud-native technologies, collaborating with globally distributed teams to ensure reliability and performance of our platform.

Qualifications

• Bachelor's degree in a related field.
• Professional experience in backend software development.
• Proficiency in English (Advanced or Fluent).
• Strong experience with Java and/or Rust.

Responsibilities

• Design, develop, and maintain scalable backend services and APIs.
• Build and evolve distributed systems handling high-volume workloads.
• Develop with Java and/or Rust; work with Kafka.
• Design data solutions using MySQL, ClickHouse, BigQuery, Athena.
• Ensure reliability, observability, fault tolerance, and operability.
• Collaborate with Product Managers, Designers, and Engineers across regions.
• Participate in code reviews and engineering discussions.
• Improve performance, security, and maintainability of the platform.
• Share knowledge across the global anti-fraud organization.

Skills

Backend development

Java

Rust

Kafka

AWS

Docker

Kubernetes

Observability

Distributed systems

English communication

Education

Bachelor's degree

Tools

MySQL

ClickHouse

BigQuery

Athena

Job description

Sinch is pioneering the way the world communicates. More than 150,000 businesses - including Google, Uber, Paypal, Visa, Tinder, and many others - rely on Sinch's Customer Communications Cloud to power engaging customer experiences through mobile messaging, voice, and email.

Whether you need to verify users or craft omnichannel campaigns, Sinch makes it easy. Our AI-infused Super Network, APIs, and applications ensure you can connect with your customers reliably and securely, at every step of their journey.

At Sinch we "Dream Big", "Win Together", "Keep it simple", and "Make it Happen". These values are our foundation!

DESCRIPTION

As a Senior Backend Software Engineer, you will design, build, and maintain distributed backend services that process high-volume, low-latency messaging traffic to detect and prevent fraud across multiple communication channels, including SMS, RCS, and WhatsApp.

You will work on highly scalable systems that rely on event-driven architectures, distributed data processing, and cloud-native technologies. The role requires close collaboration with globally distributed engineering teams to build reliable, high-performance services while sharing technical knowledge and contributing to engineering best practices.

RESPONSIBILITIES

• Design, develop, and maintain scalable backend services and APIs.
• Build and evolve distributed systems capable of processing high-volume, time-sensitive workloads.
• Develop solutions using Java/Rust and work with distributed messaging platforms such as Kafka.
• Design efficient data solutions using relational and analytical databases (e.g. MySQL, ClickHouse, BigQuery, Athena).
• Ensure reliability, observability, fault tolerance, and operational excellence across services.
• Collaborate with Product Managers, Designers, and Engineers across multiple regions.
• Contribute to code reviews, technical discussions, and engineering best practices.
• Continuously improve performance, scalability, security, and maintainability of our platform.
• Participate in knowledge sharing across our global anti-fraud organization.
• Be based in Brazil;

REQUIREMENTS

• Professional experience in backend software development.
• Bachelor's degree in a related field.
• Professional working proficiency in English (Advanced or Fluent).
• Strong experience developing applications in Java and/or Rust.
• Experience designing and operating distributed systems.
• Solid understanding of event-driven architectures and messaging systems (Kafka or similar technologies).
• Experience working with relational and analytical databases.
• Experience building applications deployed on cloud platforms (i.e. AWS).
• Experience with containerized environments (Docker and Kubernetes).
• Experience implementing observability solutions, including logging, metrics, and monitoring.
• Strong understanding of software engineering best practices, including testing, code quality, performance, and security.
• Excellent communication and collaboration skills.

NICE TO HAVE

• Experience with Rust is a plus. We don't expect everyone to know Rust from day one, but we do expect curiosity and willingness to learn. Our team will provide the support needed during your onboarding and learning journey.
• Experience in fraud detection, cybersecurity, telecommunications, or messaging platforms.
• Experience processing large-scale streaming data.
• Experience with Infrastructure as Code and CI/CD pipelines.
• Experience working in globally distributed engineering teams.

OUR HIRING PROCESS

We are committed to ensuring a recruitment process that is fair, objective, consistent, and inclusive. Our approach includes structured, competency-based interviews designed to evaluate your skills, experience, and qualifications relevant to the role. At times, we may include a data-driven assessment to enhance our hiring success and identify candidates likely to excel.

We believe in a two-way process and encourage you to ask questions throughout the journey.

BENEFITS

• STAY HEALTHY: We cover 100% of medical and dental plans for Sinchers and eligible dependents through Bradesco Saúde.
• FLEXIBLE BENEFITS: With the Caju flexible benefit card, our Sinchers can choose to use benefits on food, education, and home office assistance.
• FAMILY FIRST: Our Sinchers can enjoy paid maternity leave for 180 days and paternity leave for 30 days. Plus, we provide daycare assistance for kids up to five years old.
• EVERYDAY WELLBEING: We partner with Wellhub to help Sinchers access gyms and wellness options.
• SECURE YOUR FUTURE: Our Partnership with Prudential life insurance provides coverage for all Sinchers in the events of unexpected absences, serious illness, accidents, and disabilities.
• DIVERSITY AND INCLUSION: We offer annual reimbursements for certain expenses related to disabilities and/or transgender needs.
• TAKE A BREAK: Our Sinchers can take a day off on their birthday to celebrate with their loved ones.