Hailin Cai
Jericho,NY
Summary
Results-driven Senior Software Engineer with 10+ years of experience in designing and implementing complex systems and platforms. Exceptional leadership abilities in leading cross-functional teams to successfully deliver complex projects and implement cutting-edge technologies. Proficient in mentoring junior members, fostering team member's career growth.
Overview
12
12
years of professional experience
Work History
Director of Data Engineering
Endeavor Streaming
NY, United States
04.2018 - 07.2024
- Led several development teams and QA team to create an efficient data pipeline system, processing millions of events each day
- Led efforts in improving decision-making for stakeholders and our clients through the implementation of an advanced analytics system, featuring cross-functional collaboration, by directing the UX team, development team, and QA team.
- Led initiatives around migrating legacy report systems into cloud platforms, such as Amazon Web Services.
- Championed the development of a high-performance PII data sync system, achieving a 50% improvement in overall reporting system performance while ensuring compliance with data privacy standards.
- Proactively coordinate with cross-functional team when designing and implementing the new SSR report system. This new SSR report system provides more features, for example, secure delivery of the report, scheduling the report running, than the old system, and delivers hundreds of reports to our clients every day.
- Provided mentorship and training opportunities for junior members of the Data Engineering team and Backend Team on topics ranging from coding techniques to system administration skills.
Senior Developer Manager
Neulion LLC
Plainview, United States
07.2012 - 04.2018
- Led a cross-functional team in designing and implementing an exclusive system for suggesting content based on the viewers' previous choices and preferences, leading to a significant rise in engagement.
- Collaborated on the design and execution of cutting-edge online platforms for top US leagues (NFL, NBA, NHL, MLS, UFC), resulting in improved user experience and engagement.
- Enhanced video player monetization and introduced pre-roll and mid-roll ad support. This resulted in amplified revenue streams for both clients and the company.
- Enhanced customer base and improved user access by integrating third-party authentication systems through OAuth2
- Designed and implemented a high-concurrency cache system utilizing Redis, Memcached, and Elasticsearch resulting in a 50% enhancement in overall system performance.
- Created a dynamic real-time live stats system for major sports using various data sources, elevating the overall viewing experience
Education
Master of Computer Science -
Donghua University
Shanghai, ChinaBachelor of Computer Science -
Donghua University
Shanghai, ChinaSkills
- Java
- JavaScript
- SQL
- Python
- Scala
- Spring
- Guava
- Immutable Framework
- Spark
- EKS
- Redshift
- Step Functions
- Lambda
- Advanced problem-solving
- System design
- Data architecture
- Database Administration
- Business Intelligence
- NoSQL Databases
- Data Security
- API Development
- Stakeholder Communication
- Performance Tuning
Accomplishments
- Collaborated with team of 30+ members in the development of data pipeline and analytics system.
- Supervised team of 20+ members.
Languages
Chinese (Mandarin)
Native language
English
Proficient (C2)
C2
Work Availability
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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Timeline
Director of Data Engineering
Endeavor Streaming
04.2018 - 07.2024
Senior Developer Manager
Neulion LLC
07.2012 - 04.2018
Master of Computer Science -
Donghua University
Bachelor of Computer Science -
Donghua University
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