Justin L. Espiritu

Driving the organizational shift from Waterfall to CI/CD while serving as a de facto Scrum Master and AI-driven process pioneer.

• Serve as the Mobile Development Lead for the Dispatch application, owning the end-to-end design, implementation, and maintenance of a React Native app deployed to both the Google Play and Apple App Stores.
• Manage mobile distribution and deployment pipelines using Fastlane, and testing distribution via Firebase.
• Execute a successful migration to Expo for deployment, leveraging Claude to generate golden templates of primary features.
• Design, implement, and maintain 40+ .NET backend services (out of 42 deployable services), ensuring robust integration with agentic Claude workflows and regularly updating public APIs for direct client and front-end consumption.
• Drive front-end development using React, implementing efficient data fetching and state management with React Query and Axios.
• Build complex user interfaces leveraging Material-UI (MUI) for responsive tables and forms, and Bryntum for a massive, feature-rich scheduling UI.
• Lead and mentor a team of 4+ engineers, achieving a ~75% increase in feature velocity (measured via Azure Boards cycle time) through Agile transformation.
• Architected and maintain 10+ custom Claude skills (Specify, Plan, Execute) that reduced average feature turnaround from 1 week to 1–2 days.
• Facilitate daily stand-ups, retrospectives, and backlog grooming as a Scrum Master to maintain a high-performance, unblocked team environment.
• Lead development for Dispatch, a mission-critical insurance claim platform processing 500–1,000+ daily tasks for a network of 1,000+ resources.
• Design and implement 2+ major and 10+ minor features per sprint, including a geotracking system for real-time task automation.
• Scaled an internal AI Champions training program to 20+ engineers and non-technical staff to eliminate operational bottlenecks.
• Manage the full product lifecycle, prioritizing backlogs and technical debt to ensure consistent delivery of high-quality features.

• Acted as the Subject Matter Expert (SME) for multiple internal products across the Rocket Mortgage ecosystem, supporting 1,000+ employees.
• Architected a standardized onboarding system using Hugo and Git Pages, reducing new engineer ramp-up time by 50% (from 2 weeks to 1 week).
• Led front-end UI development and automated CI/CD deployments via Azure DevOps for the Resource Manager platform.
• Orchestrated large-scale production migrations for legacy .NET systems (Checkmate), ensuring zero-downtime transitions.
• Engineered a core logic refactor for VendorDocs, implementing a testing suite that increased unit test coverage to 85%+.
• Collaborated with business owners and 'Guardians of Quality' to establish strict coding standards and actionable technical stories.

• Engineered robust full-stack E-commerce solutions for clients like the Arbor Day Foundation, processing 10,000+ orders during peak seasons.
• Designed and implemented a custom reporting module that reduced report generation and viewing time by 50% for administrative users.
• Built custom data extensions for inRiver PIM to optimize product tracking for catalogs containing 1,000+ SKUs.
• Developed deep backend customizations for nopCommerce and EpiServer (Secura), including IP-based geolocation and business telemetry.

• Orchestrated deep-level Teamcenter PLM solutions, configuring BMIDE, BOM Management, and complex Workflows for a global manufacturer.
• Streamlined change management and access control protocols, enhancing data reliability across distributed engineering teams.
• Performed complex data modeling to synchronize thousands of technical specifications, ensuring high-fidelity data migration.
• Resolved critical configuration constraints, maintaining high system availability for a massive concurrent user base.

• Lead developer for the rewrite of the Advising Worksheet from Plone to AngularJS, radically improving user flow for 1,000s of students.
• Developed mission-critical software utilized by 15+ professional advisors to manage academic graduation plans university-wide.
• Engineered a library of reusable AngularJS directives that standardized dynamic form creation and accelerated future development.
• Authored comprehensive technical documentation in Confluence to ensure project continuity and a seamless handoff.

• Developed an automated NLP application in Python using NLTK to perform large-scale data extraction and automated text summarization.
• Implemented computational linguistics techniques to parse complex articles, significantly reducing manual analysis time.