Larry Margerum
@larrymargerum
I build scalable full-stack applications and production AI systems using LLMs, RAG, and multi-agent architectures.
PolandWhat I'm looking for
I've built production AI applications at TwelveLabs using LLMs, RAG pipelines, multi-agent architectures, LangChain, LangGraph, and OpenAI APIs. I improved AI response accuracy by approximately 35% through prompt engineering, retrieval optimization, and systematic model evaluation.
At Prefect, I delivered 20+ full-stack features across AppFlowy, an AI SaaS platform, and Plane using Next.js, TypeScript, Python, and PostgreSQL. I also improved application performance by approximately 25% through API optimization, database tuning, caching, and frontend improvements.
My work spans RESTful APIs, authentication, subscription billing, cloud deployments, AI workflows, and integrations across OpenAI, Anthropic, and open-source models. I've led technical initiatives, contributed to architecture decisions, mentored teammates, and collaborated with distributed engineering teams.
I started building AI and full-stack products at Tooploox and Weaviate, where I worked on NLP models, data pipelines, SaaS features, APIs, and PostgreSQL integrations. I'm passionate about using cutting-edge AI technologies to create impactful products and drive business innovation.
Experience
Work history, roles, and key accomplishments
AI Engineer
Twelve Labs
Jan 2025 - Jun 2026 (1 year 5 months)
Designed and deployed 12+ production-grade AI applications using LLMs, RAG pipelines, and multi-agent architectures. Improved AI response accuracy by approximately 35% through prompt engineering and retrieval optimization.
Full Stack Developer
Prefect
Jan 2023 - Dec 2024 (1 year 11 months)
Delivered 20+ full-stack features across AppFlowy, AI-SaaS Platform, and Plane using Next.js, TypeScript, Python, and PostgreSQL. Improved application performance by approximately 25% through API optimization and database tuning.
Junior Full Stack Developer
Weaviate
Jan 2022 - Dec 2022 (11 months)
Contributed to the development of 8+ frontend and backend features using Next.js, TypeScript, and Node.js for an open-source SaaS platform. Improved application performance by approximately 12% through database query optimization and API enhancements.
AI Engineer Intern
Tooploox
Jun 2021 - Dec 2021 (6 months)
Contributed to the development and evaluation of 5+ NLP models using PyTorch and HuggingFace Transformers for text classification and question-answering tasks. Built data preprocessing pipelines that reduced dataset preparation time by approximately 20%.
Education
Degrees, certifications, and relevant coursework
Warsaw University of Technology
Bachelor's Degree, Computer Science
2018 - 2021
Pursued a Bachelor's Degree in Computer Science, focusing on software development and algorithms.
Availability
Location
PolandAuthorized to work in
Portfolio
larrymargerum-portfolio.pages.devJob categories
Skills
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