Marco Maigua

Architected and implemented middleware logic for Okta Universal Login, redesigned JWT handling, migrated MongoDB entities, coordinated cross-team production updates and safeguards across CI, and applied advanced authentication and cybersecurity practices including DPoP, MFA, and mTLS to strengthen security.

Led the implementation of large-scale product features using React and modern JavaScript; collaborated with Product and Design to influence technical decisions and translate evolving requirements into scalable solutions; built and integrated REST APIs using Node.js and Python (FastAPI); improved frontend reliability by refining component architecture and optimizing data flows; contributed to code reviews, documentation, and complex bug fixes with a focus on security and maintainability; mentored junior engineers to raise overall team quality and delivery confidence.

Led backend architecture for on-chain and off-chain blockchain transaction tracing systems. Integrated Fireblocks REST APIs and webhooks for event-driven transaction monitoring. Built Python REST API services for Solana and Ethereum trading chatbot integrations and coordinated data flows with CoinGecko and Kraken APIs. Designed backend for a non-custodial crypto purchase platform across mobile and web clients; maintained Python FastAPI services and multi-server production support; automated database maintenance and release workflows with Docker-based infrastructure.