Davi L.

Senior Full-Stack Engineer | SaaS, AI & Internal Platforms

⭐⭐⭐⭐⭐ “Davi was outstanding to work with! He was always faithful to deadlines, extremely accessible, and demonstrated a deep expertise in Python and SQL.” I’m a Top Rated Plus senior full-stack engineer focused on building and improving SaaS platforms, internal business systems, APIs, AI-powered workflows, search products, and data-intensive applications. 𝗦𝗼𝗺𝗲 𝗻𝘂𝗺𝗯𝗲𝗿𝘀 𝗳𝗿𝗼𝗺 𝗮 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺 𝘄𝗶𝘁𝗵 𝟭.𝟰𝗠+ 𝘂𝘀𝗲𝗿𝘀: • Migrated 100+ production queries to a new data warehouse, reducing average execution time from 190 seconds to 2 seconds • Built an Elasticsearch search-relevancy pipeline with cross-encoder reranking, improving relevancy from 80% to 96% through iterative benchmarks • Automated a reporting process that previously required two hours of manual spreadsheet work and reduced it to five minutes 𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝗯𝘂𝗶𝗹𝗱 • SaaS platforms, internal tools, CRM and ERP systems • AI automation, OpenAI and Anthropic integrations, agents and intelligent workflows • Operational dashboards, client portals and approval systems • REST APIs, third-party integrations and business-process automation • Semantic search, data pipelines and application performance improvements 𝗖𝗼𝗿𝗲 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 Python, Django, FastAPI, Node.js, React, Next.js, TypeScript, PostgreSQL, Supabase, Elasticsearch, BigQuery, Redis, Docker, AWS, GCP, OpenAI and Anthropic. I approach projects with both the technical architecture and the business objective in mind. I scope the work upfront, identify risks early, explain trade-offs clearly, and break larger systems into realistic phases and milestones. Whether you need to build a new product, modernize an existing application, improve a slow system, automate a manual workflow, or integrate AI into your platform, I can help turn the requirements into reliable production software. Send me a message with your current challenge, and I’ll help you identify the most practical next step.