Haris Omerovic
@harisomerovic
Experienced Java & SQL Engineer specializing in backend systems optimization.
What I'm looking for
With over 14 years of experience as a Java and SQL Engineer, I have a strong foundation in mathematics and computer science. My expertise lies in solving complex problems and optimizing high-performance backend systems, particularly in fintech, SaaS, and enterprise applications. I thrive in startup environments, having played key roles in projects like HYCU and MRJ, where I architected systems from the ground up.
Beyond hands-on development, I am passionate about mentoring teams and promoting collaboration. I enjoy turning complex requirements into impactful, reliable solutions, whether it's optimizing algorithms, refining database performance, or guiding cross-functional teams. My analytical mindset allows me to anticipate edge cases and deliver clean, efficient, and maintainable code.
Experience
Work history, roles, and key accomplishments
MYSQL Database Engineer
World Sport Action
Apr 2023 - Present (2 years 2 months)
Redesigned database architecture for a sports management SaaS platform, reducing costs by 60% while improving performance on reduced resources. Implemented numerous optimized SQL procedures and REST APIs using Node.js/TypeScript. Managed Amazon DMS for seamless data replication and configured CloudWatch to identify performance bottlenecks.
Development Team Lead
MRJ Systems, LLC
Oct 2018 - Apr 2023 (4 years 6 months)
Led backend development for Algodoud’s automated trading platform, supporting over 2 million transactions per minute. Built a real-time market data streaming server with low-latency execution and architected PostgreSQL databases to reduce query latency. Developed a multi-user Amazon marketplace platform and implemented secure payment systems.
Senior Lead Engineer
HYCU
Apr 2015 - Oct 2018 (3 years 6 months)
Led Java-based development of HYCU’s enterprise backup solution, designing core functionalities from scratch for Nutanix HCI environments. Optimized data storage algorithms, reducing network traffic and backup times through efficient resource management. Collaborated with the founding team to build the solution and mentored a customer support team.
Software Engineer
ComTrade
Feb 2011 - Apr 2015 (4 years 2 months)
Enhanced HP Data Protector’s VMware backup agent by adding support for vCloud Director. Collaborated with cross-functional teams to troubleshoot critical bugs for enterprise clients. Achieved 100% customer satisfaction during onsite visits.
Freelancer
Freelancer
May 2012 - Present (13 years 1 month)
Developed various prediction and analytics algorithms adapted for Daily Fantasy Sports and created innovative rating system formulas. Built analytical tools to extract valuable insights from data. Developed scripts and scrapers to automate time-consuming tasks, streamlining workflows for clients.
Education
Degrees, certifications, and relevant coursework
Faculty of Natural Science and Mathematics, Sarajevo
Bachelor's Degree, Mathematics and Computer Science
Obtained a Bachelor's Degree in Mathematics and Computer Science. Focused on foundational principles across both disciplines, building a strong analytical and problem-solving skillset.
Faculty of Natural Science and Mathematics, Sarajevo
Master’s Degree, Mathematics and Computer Science
Completed a Master's Degree in Mathematics and Computer Science. This advanced study deepened expertise in complex mathematical theories and sophisticated computer science applications.
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Salary expectations
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