Senior Full-Stack Software Engineer

Target is a major U.S. retail company operating large-scale stores, e-commerce, supply chain, and digital technology platforms. My contributions there as a Senior Software Engineer included: Designed and built full-stack applications using TypeScript, React, Next.js, Node.js, Python, Django, FastAPI, and PostgreSQL for high-volume retail workflows. Built backend services and REST/GraphQL APIs with Node.js, NestJS, FastAPI, Apollo, Prisma, and event-driven services. Developed React and Next.js interfaces with Redux, React Query, Material UI, Tailwind CSS, Storybook, and accessible responsive components. Built AI and LLM features using OpenAI APIs, RAG, semantic search, and n8n workflows for internal search, document processing, and workflow automation. Designed data models and optimized queries across PostgreSQL, MongoDB, DynamoDB, Redis, and Elasticsearch, including indexing, migrations, and high-volume query tuning. Built and maintained cloud services on AWS and Azure, including containerized workloads running on Docker, Kubernetes, and AKS. Automated infrastructure and deployment workflows with Terraform, GitHub Actions, GitLab CI/CD, and Jenkins, with automated testing and controlled production releases. Implemented authentication and authorization using OAuth 2.0, OpenID Connect, JWT, RBAC, secrets management, audit logging, and input validation. Improved application reliability through structured logging, monitoring, tracing, performance testing, failure analysis, and production incident response. Added unit, integration, and end-to-end coverage using Jest, React Testing Library, PyTest, Cypress, and Playwright. Built and maintained services in C# and ASP.NET Core where existing .NET systems required new APIs, integrations, and modernization. Led system design, API reviews, code reviews, technical documentation, and mentoring while working with engineering, product, security, and operations teams. Improved application performance through caching with Redis, database indexing, API optimization, background jobs, and asynchronous processing. Supported PCI-aware data handling and OWASP security practices across customer-facing applications and internal services.

Magnite is an independent advertising technology company that provides digital advertising infrastructure for publishers, advertisers, and media buyers. My contributions there as a Full Stack Software Engineer included: Built advertising platforms and internal applications using JavaScript, TypeScript, React, Node.js, Python, Django, and Angular. Developed REST and GraphQL APIs for high-volume advertising workflows, reporting systems, integrations, and internal tools. Built backend services with Node.js, Express.js, Django REST Framework, background jobs, and event-driven processing. Developed reusable React and Angular components with Redux, responsive CSS, HTML5, and Webpack, supporting large internal and customer-facing applications. Designed and optimized data access across PostgreSQL, MySQL, MongoDB, Redis, and Elasticsearch, including indexes, schema changes, migrations, and query tuning. Built cloud services on AWS, using Docker and infrastructure automation with Terraform for repeatable development and deployment environments. Developed services using C# and ASP.NET Core as part of modernization and integration work across existing platform components. Implemented authentication, JWT, OAuth 2.0, RBAC, input validation, audit logging, and secure API access for internal and external applications. Built automated test suites with Jest, Mocha, Chai, React Testing Library, and Cypress, covering unit, integration, and browser workflows. Improved system performance and reliability through Redis caching, asynchronous jobs, API optimization, monitoring, logging, and production troubleshooting. Worked with engineering and product teams on system design, code reviews, technical documentation, Agile delivery, and production releases.

Aravive was a biotechnology company developing therapies for cancer and other serious diseases, supported by research and clinical development systems. My contributions there as a Full Stack Engineer included: Built web applications and backend services using JavaScript, Python, Django, Node.js, Angular, HTML5, and CSS3. Developed REST APIs with Django REST Framework and Express.js for research, clinical, and internal business applications. Designed and maintained data models across MySQL, PostgreSQL, Oracle, and MongoDB, with indexing, migrations, and query optimization. Built search and data retrieval features using Elasticsearch and implemented Redis caching for frequently accessed data. Developed responsive Angular interfaces with reusable components, JavaScript modules, HTML5, CSS3, and asynchronous API integration. Built early containerized development and deployment workflows with Docker, alongside AWS-hosted application environments. Added automated tests using Mocha, Chai, and PyTest, covering API behavior, business logic, data access, and critical application workflows. Implemented authentication, authorization, input validation, audit logging, and secure handling of sensitive research and healthcare-related data, following HIPAA-aware practices. Worked with engineers and researchers on system design, production troubleshooting, code reviews, documentation, and incremental application modernization.