Looking for a job

Andrew Johnson

@andrewjohnson3

Message

Senior software engineer delivering scalable, user-centric web platforms with modern JavaScript and cloud expertise.

United States

Message

What I'm looking for

I seek roles where I can lead full-stack development, drive scalable product outcomes, collaborate cross-functionally, and use cloud/AI to accelerate delivery.

I am a Senior Software Engineer with 10+ years building high-impact, scalable web platforms across healthcare and e-commerce. I specialize in front-to-back product development using React, Next.js, Node.js, TypeScript, and AWS to deliver inclusive, high-performance experiences.

At Highmark Health I led the MyHighmark portal launch that onboarded 700K+ members within weeks and scaled to 6.8M users, modernized hybrid mobile apps to increase engagement 22% YoY, and created a reusable React component library that reduced feature rollout time 35%.

Previously at Walmart I helped build the Same-Day Grocery Delivery platform, cutting per-order costs ~20% and scaling delivery operations nationwide; I also implemented centralized design systems and resilient CI/CD practices to maintain high uptime and faster incident resolution.

I focus on measurable outcomes: accelerating analytics delivery 3×, maintaining strong automated test coverage, ensuring WCAG 2.1 AA accessibility, and leveraging AI tools and data pipelines to drive personalization and growth. I collaborate closely with product, UX, and data teams to turn user journeys into impactful features.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Highmark Health

Mar 2022 - Present (4 years 4 months)

Led development of “Sidekick,” an enterprise AI assistant platform, building a full-stack system with React, Next.js, Java Spring Boot, Python microservices, and Google Cloud (GKE, Cloud Run, Vertex AI), serving 40,000+ employees, driving 6M+ annual prompts, and generating $27.9M in business value.

Senior Full Stack Engineer

Walmart

Sep 2017 - Feb 2022 (4 years 5 months)

Scaled the Spark Delivery platform from pilot to nationwide rollout, supporting 4,000+ stores and reaching 80%+ of U.S. households.
Developed same-day grocery delivery systems enabling millions of users to receive orders within sub-hour timeframes.

Full Stack Engineer

IBM

Jun 2015 - Jul 2017 (2 years 1 month)

Delivered 100+ web and mobile solutions across fintech, healthcare, and e-commerce using React, React Native, TypeScript, C#, and ASP.NET Core, accelerating feature delivery and enhancing user experience.