Joshua Martinez

I’m a Senior Full-Stack Engineer with 12 years of hands-on experience building and scaling high-impact web applications, including contributions to projects at Netflix and Endava. I focus on delivering reliable, user-focused products across streaming media, fintech, retail, B2B/B2C, e-commerce, and enterprise SaaS.

At Zalando (April 2023 – Present), I develop and maintain scalable e-commerce and marketplace systems, including Zalando Home, Zalando Lounge, and the core Zalando Fashion Store used by millions of customers across Europe. I optimized React-based frontend applications for product discovery, search, and checkout performance, reducing pageload times by up to 30%, and implemented AI-driven recommendations and search improvements by up to 20% for engagement and click-through rates.

Previously at Accenture (Jan 2020 – Mar 2023), I worked on enterprise digital transformation across banking, insurance claims processing, retail commerce portals, and public-sector digital services. I designed scalable React-based dashboards and maintained Node.js microservices using REST and event-driven architectures, while building Python backend services on Kubernetes processing over 1M records daily and reducing data processing time by around 35%.

Earlier roles at SAP SE and Endava strengthened my end-to-end engineering mindset: building Node.js backend services, React/Fiori frontend applications, and Python analytics pipelines, while optimizing enterprise content delivery and recommendation engines. I bring strong microservices architecture, real-time systems thinking, and AI/LLM systems expertise (RAG pipelines, semantic search, prompt engineering) to improve performance, reliability, and developer productivity through solid system design and code reviews.