Mateus Inocencio Maia

Developed and maintained FACEIT's matchmaking platform and new skills system for CS2, Dota 2 and OW2, improving match quality and contributing to increased subscriptions and reduced churn. Led incident handling, SLO monitoring and telemetry to improve reliability and player engagement.

Owned the logistics platform powering SumUp worldwide deliveries, integrating new countries and tracking engineering and business metrics aligned to OKRs to optimize delivery times and lifecycle health. Implemented APIs, multithreaded workers and observability to improve reliability across services.

Built ZapFin, automating the loan process and creating an embedded lending experience that grew the product over 500% in one year by improving conversion and throughput. Owned end-to-end backend development, cloud infrastructure and monitoring for production-ready services.

Architected and developed a microservices-based CRM and API gateway using GraphQL, improving code quality and telemetry while enabling scalable integrations for property developers. Drove CI/CD and extensive testing practices to increase platform reliability.

Developed search and recommendation features using ML techniques and collaborated with Global Fashion Group on DataJET, improving personalization and search relevance. Also contributed to PCI DSS implementation for mobile applications.

Designed and built scalable microservices and front-end solutions for Brazil's largest EdTech, driving availability and performance through containerization and monitoring. Implemented end-to-end solutions spanning React, Node.js and Kafka.

Taught programming and STEM topics to students aged 6–17, delivering curriculum in game and app development to build logical reasoning and practical coding skills. Developed hands-on lessons in C#, Java and Python for diverse student levels.

Co-founded a web and mobile development startup delivering client projects and increasing conversions through UX and online marketing, managing sales and technical delivery for high-profile clients. Led full-stack and React Native development and client relationships.

Built an MVP marketplace/CMS to connect domestic service providers with users, including background checks and payment workflows; validated product at Accelerator Day before pausing to focus on other projects. Managed product, tech and go-to-market activities.

Bachelor of Engineering in Computer Engineering at FIAP from 2016 to 2020.