Kai Wang
@kaiwang
Senior software engineer specializing in scalable platforms, AI integration, and full‑stack systems.
United StatesWhat I'm looking for
I am a Senior Software Engineer with deep experience building scalable, high-performance platforms across logistics, legal technology, and career-transition marketplaces. I design microservices, event-driven systems, and full-stack solutions while integrating AI/ML to deliver customer-focused products.
I have led end-to-end projects at companies including DoorDash, Snap, Amazon, Facebook, and Groupon, delivering measurable improvements such as reduced latency, higher engagement, and automated workflows. Recent work includes architecting a legal AI agent SaaS platform using LLM APIs and RAG to process enterprise document collections and surface case-specific insights.
I value pragmatic engineering, data-driven product decisions, and collaborative cross-functional execution. I bring expertise in cloud infrastructure, scalable backend design, and AI integration to drive business outcomes and improve developer and user experiences.
Experience
Work history, roles, and key accomplishments
Senior Software Engineer
KITRUM
Nov 2023 - Present (2 years 2 months)
Built a legal AI-agent SaaS platform using LLM APIs and RAG to process 60GB+ of documents, reducing manual case setup time by 50% and increasing customer engagement by 15% through intelligent document categorization and extraction.
DODeveloped and optimized a real-time recommendation notification system and integrated AI-based recommendation models, contributing to a 20% increase in customer retention and improved recommendation efficiency.
SILed development of friend recommendation algorithms using embedding retrieval and personalized PageRank, improving recommendation relevance and increasing engagement by 25%.
AMLed migration and optimization of a repeated-purchase recommendation service, reducing latency by 30% and improving scalability and throughput for millions of customer data points.
FASoftware Engineer
Jul 2017 - May 2020 (2 years 10 months)
Contributed to personalized video recommendation and search ranking infrastructure, increasing video engagement by 20% and reducing backend processing time by 40%.
GRDesigned a backend web service and email/notification scheduling system using NoSQL and rule-based algorithms, boosting customer engagement by 15%.
SUConducted research on load balancing and nonlinear communication time optimization for distributed systems and published findings in peer-reviewed journals.
Education
Degrees, certifications, and relevant coursework
SUStony Brook University
Doctor of Philosophy, Electrical and Computer Engineering
2009 - 2013
Activities and societies: Research Assistant; publications on load balancing algorithms and nonlinear communication time optimization.
Doctor of Philosophy in Electrical and Computer Engineering focusing on algorithm optimization and distributed systems with published research.
Availability
Location
United StatesAuthorized to work in
Job categories
Skills
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