Own the Java client and JDBC driver end-to-end: roadmap, API design, performance, release engineering, and partner-facing support.
Drive throughput and latency improvements across the client and ClickHouse server.
Engage directly with external partners on interoperability, regressions, and roadmap alignment.
ClickHouse is a real-time analytics database company recognized on the 2025 Forbes Cloud 100 list. With over 3,000 customers and 250% year-over-year ARR growth, it is a fast-growing private cloud company on a mission to transform how companies use data.
Design and develop features for parallel and distributed query engines to drive innovation in Cloudera Data Platform.
Focus on query optimization, performance, and scalability of SQL queries for large-scale distributed systems.
Improve code quality through writing tests, automation, and code reviews while contributing to open source projects.
Cloudera empowers people to transform complex data into actionable insights. As a preferred data partner for top companies, we advance digital transformation with open source innovation.
Design and optimize high-performance low-level C++ code for system-critical JVM runtime components and distributed communications.
Lead complex technical projects from design through production, owning outcomes under real-time constraints.
Mentor junior engineers and collaborate across teams to ensure robust solutions through constructive peer review.
Azul develops award-winning enhanced builds of OpenJDK for superior application performance and efficiency. They are a global leader in Java runtime solutions with offices in Prague, Limassol, and Belgrade, fostering a culture of collaboration and top engineering expertise.
Design and implement core components of the real-time audience segmentation platform.
Build scalable evaluation engines and event-driven pipelines for continuous data changes.
Optimize system performance, caching strategies, and operational efficiency across distributed systems.
Sigma Software is a technology company that develops advanced platforms for audience segmentation, personalization, and customer engagement. They value innovation, collaboration, and technical excellence, working on challenging tasks with cutting-edge technologies at scale.
Design and implement complex algorithms for cellular network optimization.
Develop and maintain high-performance, scalable software systems using Java and modern technologies.
Collaborate with cross-functional teams in an AI-native engineering environment using coding agents.
5Blue Software is an Israeli-Ukrainian software development company specializing in custom software development, staff augmentation, and AI solutions. They help startups and mid-sized companies scale faster with vetted engineering talent across Europe, fostering a supportive, collaborative, and dynamic international team environment.