Dario Kozicki

Driving AWS cost optimization through FinOps practices and infrastructure analysis. Modernizing a legacy healthcare codebase using the Strangler Fig pattern, progressively migrating to serverless services and Next.js.

Developed a backend-for-frontend and microservices for a recruiting application connecting applicants and companies through AI-assisted interviews. Built features using Next.js, React, Node.js, and NestJS, with Redux Toolkit, Tailwind CSS, testing, caching, and AWS.

Delivered and iterated on MVPs for clients across industries including marketing, legal, and document storage, typically on 3–9-month engagements. Worked directly on products for clients in the United States and Canada using React, Node.js, Next.js, React Query, Prisma, tRPC, Tailwind, and S3.

Worked in Marketplace's Deals organization, launching campaign systems for high-traffic commercial events such as Black Friday. Built microservices and SPA functionality using Java, Node.js, and React, with SQL/NoSQL storage, queues, consumers, testing, and code review practices.

Developed full-stack banking applications, ETL processes, and scheduled jobs in Java. Integrated REST and SOAP APIs and worked with SQL, JDBC, React, HTML, CSS, and JavaScript.

Earned the AWS Certified Solutions Architect – Associate certification in March 2026.

Completed Systems Engineering degree in February 2025.