Oscilar is looking for a Sr./Staff Backend Engineer to focus on designing, implementing, and optimizing services that leverage Apache Kafka for high-throughput, real-time data streams. You will be responsible for scaling databases like Postgres, Redis, DynamoDB, and ClickHouse within our AWS infrastructure. This is a senior technical leadership role involving cross-team collaboration, mentoring, and driving system scalability, performance, and reliability.

What You'll Do

Design, develop, and maintain scalable backend services using Java and AWS technologies.
Lead the architecture, deployment, and optimization of Apache Kafka to support real-time data streaming across distributed systems.
Build and manage Kafka topics, brokers, producers, and consumers, ensuring optimal performance and data consistency.
Implement streaming solutions with Kafka Streams and Kafka Connect, focusing on high availability and low-latency processing.
Collaborate with product, frontend, and data engineering teams to define technical requirements and deliver reliable, performant services.
Design and maintain high-performance data storage solutions using Postgres, Redis, ClickHouse, and DynamoDB.
Optimize database performance through schema design, indexing strategies, and resource partitioning.
Implement best practices for infrastructure security, performance monitoring, and data integrity.
Establish and maintain CI/CD pipelines for automated testing, deployment, and monitoring.
Provide mentorship to junior engineers, conduct code reviews, and promote best practices in software development.
Proactively identify and resolve performance bottlenecks and technical challenges in both streaming and database systems.

What We're Looking For

8+ years of experience with Java in large-scale, distributed environments.
Extensive experience with Apache Kafka, including Kafka Streams, Kafka Connect, partitioning, replication, and consumer group management.
Strong experience with AWS services (e.g., MSK, EC2, RDS, DynamoDB, S3, Lambda).
Solid understanding of distributed system design, messaging patterns, and eventual consistency.
Proven ability to diagnose and resolve bottlenecks in streaming and database systems.

Nice to Have

Experience integrating Kafka with analytics solutions like ClickHouse.
Knowledge of event-driven architecture and streaming patterns like CQRS and event sourcing.
Hands-on experience with monitoring tools (e.g., Prometheus, Grafana, Kafka Manager).
Experience automating infrastructure with tools like Terraform or CloudFormation.
Proficiency with Postgres, Redis, ClickHouse, and DynamoDB. Experience with data modeling, query optimization, and high-transaction databases.
Familiarity with encryption, role-based access control, and secure API development.

Technical Stack

Languages & Frameworks: Java, Apache Kafka, Kafka Streams, Kafka Connect
Cloud & Infrastructure: AWS, MSK, EC2, RDS, DynamoDB, S3, Lambda
Databases: Postgres, Redis, ClickHouse
Monitoring & Tooling: Prometheus, Grafana, Kafka Manager, Terraform, CloudFormation

Team & Environment

You will collaborate across teams and mentor other engineers. Oscilar's culture is built on mission-driven teams, extreme ownership, innovating at the cutting edge, and is a family-friendly, AI-first company. Over 50% of the company is in Engineering and Product, and both Co-Founders are engineers at heart.

Benefits & Compensation

Competitive salary and equity packages
401k
100% Employer covered comprehensive health, dental, and vision insurance with a top tier plan for you and your dependents (US and Canada)
Unlimited PTO policy
Home office setup assistance
Regular team events and offsites
Unparalleled learning and professional development opportunities