# Ziwa Mukungu > Lead Software Engineer skilled in creating React front-ends with either a NodeJS or Python back-end framework Location: San Diego, California, United States Profile: https://flows.cv/ziwa Senior Software Engineer with 8+ years building scalable SaaS, mobile apps, and subscription billing systems. Skilled in multi-tenant architecture, React/React Native, and analytics pipelines. Leads small engineering teams, drives technical strategy, and delivers high-impact features that improve performance, revenue, and user growth. Strong cross-functional communicator who translates business goals into clear technical plans and execution. ## Work Experience ### Lead Software Engineer @ Lithios Jan 2025 – Present | San Diego, California, United States • Directed engineering strategy and delivery across multiple client products, setting architecture, coding standards, and system design guidelines for a 4-engineer team. • Improved development velocity by 30% through CI/CD redesign, automation tooling, and performance-focused review processes. • Led technical discovery and client-facing strategy to translate unclear requirements into roadmaps, reduce churn risk via communication frameworks. ### Senior Software Engineer @ Ivy Clinicians Jan 2023 – Jan 2025 | San Diego, California, United States • Increased organic growth by designing SEO + content architecture (routing, structured data, pre-rendering, dynamic generation), tripling search visibility and scaling MAUs to 13,000+ while improving front-end performance by ~50%. • Architected subscription revenue systems, including a third-party payment processor and a Stripe-based billing platform (webhooks, invoicing, proration, entitlements) to streamline monetization. • Built the data + platform foundation for scale: a BigQuery analytics warehouse for engagement/retention insights and a reusable multi-tenant white-label component system that accelerated launches and contributed to 3× user growth. ### Frontend Developer @ Coworks Jan 2020 – Jan 2022 | Raleigh, North Carolina, United States • Led UI/UX wireframing and customer requirement workshops, reducing feature misalignment and delivery churn by ~20–25%. • Built a React-based operator dashboard with a Ruby on Rails backend used by 5,000+ admins daily for scheduling, facility management, and billing workflows. • Improved platform scalability and delivery quality by optimizing Redux/Rails performance (30–50% faster load times) and enforcing a Gitflow branching model for clean rollouts. ### App Developer @ Lithios Jan 2020 – Jan 2020 | Raleigh, North Carolina, United States • Owned the core React Native architecture for an award-winning IoT mobile platform, building the component library, theming system, navigation shell, and API abstraction layer controlling lighting fixtures. • Improved app responsiveness by reducing render time through component-level optimization, background task tuning, and network request batching, while delivering high-fidelity reusable UI components. • Led client communication and on-site testing/UAT with a Fortune 500 partner, quickly resolving device–cloud interaction issues under tight sprint timelines. ### Lead Developer @ WAAM Jan 2018 – Jan 2020 | Raleigh, North Carolina, United States • Principal developer for a venture-backed content management system featuring a dashboard, landing page, and client-facing mobile application • Collaborated with the design team to revamp UI and app interface • Supervised contractor responsibilities and code reviews ### VP of Product @ Freshspire Inc. Jan 2018 – Jan 2020 | Raleigh-Durham, North Carolina Area • Responsible for designing Freshspire’s user-facing web application currently in use by food distributors and restaurants in the Raleigh-Durham area • Participated in an agile development cycle with an emphasis on requirements elicitation, Kanban boards, and a Git rebase workflow • Implemented the application using React, Mobx stores, Firestore, Firebase Cloud Functions, and Amazon SES • Wrote unit and E2E tests using Jest and Selenium Webdriver • Debugged cross-browser compatibility and user-interface inconsistencies ### Freelance Marketing @ Affiliate Marketing Jan 2017 – Jan 2017 | United States • Directed leads to my WordPress site with a designed landing page to capture over 1000 email leads • Purchased advertising space on bing.com and displayed my ads with diet and fitness e-books • Redirected users to client product page after email address was captured • Sent specific emails to users promoting products related to the product they were interested in at the time of email capture • Developed dynamic and flexible templates, and made sure they were compliant with Gmail • Optimized and Increased advertisement and email click-through rates using A/B testing methods and different keywords, reducing marketing costs by 20% ### Unity 3d Developer @ Self-Employed Jan 2016 – Jan 2017 | United States • Created 2D arcade style mobile games available on Android that were localized to be played by users around the world • Built, tested, and deployed two scalable mobile games written in C# using the Unity engine • Directed art direction by designing and creating arcade-style assets in Adobe Illustrator and Photoshop • Communicated with QA volunteers to debug the application across multiple platforms and to improve game mechanics & design ## Education ### Computer Science University of North Carolina at Greensboro ## Contact & Social - LinkedIn: https://linkedin.com/in/zmukungu --- Source: https://flows.cv/ziwa JSON Resume: https://flows.cv/ziwa/resume.json Last updated: 2026-03-22