Core Database Engineer

About QuestDB As a specialized database, QuestDB stores, processes and analyzes time series data in real-time, with a focus on reliability, extreme performance and simplicity. It provides best-in-class hardware efficiency and robust features, saving costs and accelerating time-to-value. Our open source repository has gathered 17k stars and QuestDB is the fastest growing database in the time-series category, according to DB-Engines . We are a product-first company with a large community of developers. As a team, we are globally distributed, remote-first and backed by leading venture capital firms and Y Combinator. Teams have had success with QuestDB across a wide range of industries, such as Financial Services, Energy and Space Exploration. Category leading companies such as OKX, Mizuho, and Airbus rely on QuestDB for large-scale, data-intensive production systems. Emerging and disruptive startups also leverage QuestDB to gain a significant edge within traditional industries. The role As a Core Database Engineer, you will bring your experience in design, development, and testing to improve our open source time-series SQL database. You will continuously improve the system's performance, ensuring that QuestDB remains scalable and easy to use as we roll out new features built with C++ and Java (zero-GC). You will have the opportunity to interact with and gather feedback from QuestDB's growing community of users and contributors. You'll have the chance to work in an open and collaborative environment to improve user experience and the system's consistency along the way. Requirements 3+ years of experience building data-centric software, including writing and tuning data-processing algorithms BS in Computer Science or equivalent experience Proficiency in C++ and Rust Intermediate knowledge of Java Strong understanding of data structures, algorithms, OS internals, and hardware Can-do attitude, good communication skills, empathy Experience working in teams, with Git workflows, CI, and code reviews Cloud experience is a plus What we offer Generous equity options package Flexible working hours 100% remote work Freedom to choose your technical equipment Wonderful, highly qualified colleagues Truly international team (10+ nationalities) Transparent, collaborative, and inclusive culture Exciting opportunities for career progression as we grow High autonomy, minimal controls, and a collaborative environment Working at QuestDB We hire talented and passionate people who share our mission to empower developers to solve their problems with data. We are building breakthrough technology to power the infrastructure of tomorrow. Work with world-class engineers - including two teammates who placed in the top 10 of the One Billion Row Challenge (1BRC) We are a company with thousands of users; our mission is to empower them We invest in a culture that promotes ownership, autonomy and independent thinking We have transparent leadership and value employees' strategic input Our team is ambitious and tackles the most difficult problems at the deepest data infrastructure layer