Senior Developer/Tech lead (Java)

About the RoleWe’re looking for a Senior Developer/Tech Lead who thrives on solving complex technical problems and enjoys leading a team working on performance-critical systems.This is a fully remote position, offering flexibility while working on a product that processes massive real-time data streams and delivers high-end visual analytics. Please note that our team works in GMT+2/3 hours so your timezone should be compatibleWhat You’ll DoDesign and develop high-performance desktop applicationsTackle complex challenges in algorithms, data structures, and concurrencyOptimize systems for speed and efficiency under heavy data loadsLead and mentor a team of engineersContribute to architectural decisions and technical directionWhat We’re Looking For8+ years of experience in Java developmentStrong fundamentals in algorithms, data structures, and multithreadingExperience with performance optimizationLeadership mindset or experience leading teamsSolid English communication skillsNice to HaveBackground in competitive programming (ACM, ICPC, Olympiads, etc.)What Makes This Role UniqueFocus on desktop application development (no Spring, no off-the-shelf databases)Work on systems handling hundreds of thousands of events per secondWhat We Offer100% remote work with flexible setupPaid annual and sick leaveBudget for equipment and software (scaled with tenure)Sponsored training and English lessonsCollaborative, international team environmentHiring ProcessThe first step to our process is a paid technical task:Takes ~90 minutes on averagePlease do not use AICompensation: $100 (upon successful completion and interview participation)Focus on performance and correctnessYou’ll receive a pass/fail result, and successful candidates will move forward in the process.About BookmapBookmap is a leading high-performance visualization and trading platform that transforms how market data is understood.Our platform is widely used across major exchanges, including CME, Eurex, Nasdaq, and crypto markets.