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Andrew Lehmann

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Fort Worth, Texas, United States

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Résumé

Jobs verified_user 0% verified
  • S
    Senior Full Stack Software Engineer
    StfineTech
    Aug 2020 - Current (6 years 2 months)
    At Stfinetech, I lead and steward multiple production-scale applications serving millions of monthly users across consumer-facing and enterprise platforms. I span frontend, backend, cloud infrastructure, and data pipelines, producing production-ready code alongside architectural guidance, technical planning, and long-term system direction. I partner closely with product managers and designers to translate ambiguous business requirements into scalable technical solutions, shaping architectural discussions that balance performance, cost, and maintainability. My contributions support high-availability systems with 99.9%+ uptime and continuous delivery in fast-moving product environments.
    On the frontend, I architect and evolve React and T
  • Fueled
    Senior Full Stack Developer
    Fueled
    Apr 2018 - Jul 2020 (2 years 4 months)
    At Fueled, I served as a Senior Full Stack Developer, building and shipping production applications for healthcare, SaaS, and consumer clients in a fast-paced consultancy environment. I delivered scalable React frontend architectures and Node.js backend services aligned with frequent release cycles, often shipping features weekly or biweekly, for applications serving approximately 40,000-60,000 active users.
    Alongside web platforms, I assisted with a React Native mobile application sharing APIs and business logic with the web platform, adapting frontend architecture for mobile constraints and improving load times and interaction responsiveness by 20%+ on lower-powered devices.
    Migrated legacy Java codebase to a modular, microservi
  • Upwork
    JavaScript Developer (Freelancer)
    Upwork
    Dec 2017 - Mar 2018 (4 months)
    Executed freelance frontend engagements across multiple domains, taking end-to-end ownership from requirements clarification through implementation, testing, and deployment. Produced interactive, high-performance user interfaces and resolved real-world performance and cross-browser issues across live production environments accessed by 5,000+ end users.
    Frequently navigated unfamiliar production codebases, partnered directly with stakeholders to refine requirements and usability, and delivered enhancements under tight timelines for applications used by thousands of end users, while independently prioritizing work and managing delivery expectations.
Education verified_user 0% verified
  • University of Houston
    Bachelor of Science, Computer Science
    University of Houston
    Jan 2015 - Dec 2017 (3 years)
Projects (professional or personal) verified_user 0% verified
  • S
    ApartmentList
    StfineTech
    Directed full-stack development for a data-intensive real estate marketplace powering advanced search, filtering, and personalized listing experiences across 3M+ listings and high-concurrency user traffic. Delivered real-time user interactions backed by APIs optimized for high concurrency and low latency. Optimized MongoDB schemas, indexing, and aggregation pipelines, yielding 40% faster query response times on critical endpoints. Collaborated with product and data teams to align technical solutions with analytics insights and growth objectives. https://www.apartmentlist.com/
  • Fueled
    Opened
    Fueled
    Implemented full-stack MERN capabilities for a modern SaaS platform, crafting reusable frontend components and scalable APIs that supported rapid iteration while preserving system stability. https://opened.co/
  • Upwork
    Bleacher Report
    Upwork
    Contributed frontend JavaScript enhancements to a high-traffic sports media platform serving a global audience. Delivered interactive UI features for real-time content updates and live event coverage, and assisted with performance tuning that preserved responsiveness during major live sporting events. https://bleacherreport.com/
  • Fueled
    Healthgrades
    Fueled
    Engineered React-based user interfaces and Node.js backend services for a healthcare platform where accuracy, usability, and performance were mission-critical. Enabled features used by patients and providers nationwide while aligning solutions with compliance and data integrity requirements. https://www.healthgrades.com/
  • S
    Wayfair
    StfineTech
    Advanced a large-scale e-commerce platform serving millions of daily users and supporting high-volume transactional workflows. Developed and enhanced complex React and TypeScript interfaces optimized for performance, accessibility, and long-term scalability. Integrated frontend systems with Node.js services responsible for real-time pricing, inventory availability, and customer data synchronization across distributed systems. Investigated and resolved performance bottlenecks during major promotional events, preserving platform stability under significant traffic surges. Participated in architectural refactoring initiatives that reduced technical debt and strengthened scalability across core user journeys.
  • S
    CarMax
    StfineTech
    Implemented secure, customer-facing features for a large automotive marketplace with strict reliability and data integrity requirements. Implemented backend workflows with robust validation, authorization, and error-handling mechanisms. Strengthened frontend state management to ensure predictable behavior across complex customer journeys. Partnered with design, product, and QA teams to deliver features meeting quality and performance standards. Contributed to platform hardening efforts, reducing production incidents across successive releases. https://www.carmax.com/