Sandro D.

Need a senior engineer who can quickly understand an existing codebase, solve difficult backend problems, and deliver maintainable production-ready code? I help clients build, review, debug, and improve Python backend systems, REST APIs, database integrations, distributed services, and AI-enabled applications. I bring 10+ years of software engineering experience across Python, Go, TypeScript, Java, PostgreSQL, Redis, SQLite, Docker, Kubernetes/OpenShift, CI/CD, application security, and production debugging. I can help with: • Python backend development, refactoring, and code review • REST API implementation, integration, and troubleshooting • PostgreSQL and SQL data workflows, validation, and reliability • Distributed systems, observability, performance, and production debugging • Secure coding, regression prevention, and CI/CD automation • AI/LLM code evaluation and AI-enabled backend features Open-source highlights: • Ranked #5 contributor to MemPalace when this profile was updated, with Python work involving ChromaDB/HNSW, MCP, SQLite, reliability fixes, compatibility improvements, and regression tests • Ranked #2 contributor to Wachd, with primarily Go backend contributions plus TypeScript, PostgreSQL, Redis, secure HTTP handling, incident similarity, and system reliability improvements My recent AI work includes evaluating generated Python code through pull-request-style reviews focused on correctness, API design, error handling, security, maintainability, performance, testing, and production readiness. I work well with existing systems, ambiguous requirements, difficult defects, and codebases that need senior-level engineering judgment. I communicate clearly, document decisions, and focus on changes that are practical, reliable, and easy to maintain.