Lead product design for Mariana Tek's boutique-fitness SaaS: craft UX/UI across web and mobile, run user research and testing, produce wireframes/prototypes/high-fidelity mockups, collaborate with product and engineering, mentor designers, and drive design strategy to meet user and business goals.

Develop and maintain Java/Spring Boot microservices for a payment gateway. Write tests, resolve production issues, participate in design and code reviews, collaborate with cross-functional teams, create API documentation, and join on-call rotations.