Senior Full Stack Developer

I design realistic software-engineering tasks for evaluating AI coding agents in complex, production-like codebases. I create automated graders, behavioral tests, and scoring rubrics that assess functional correctness, security, privacy, and regression handling.

I conduct reference runs, analyze agent failure patterns, validate task reproducibility, and investigate full-stack edge cases involving APIs, authentication, data exposure, and cross-service workflows. I prepare and quality-check evaluation packages using Git, Docker, CI workflows, Claude Code, Codex, and multi-agent development tools.

I own frontend and backend development for a commission-management ecosystem, selecting frontend architecture and translating business requirements into production features. I build workflows for commissions, consultant hierarchies, payouts, chargebacks, invoicing, auditing, and financial reporting.

I design NestJS endpoints backed by PostgreSQL and implement guard-based security for business operations. I also develop multi-company SaaS functionality, custom CRM modules, transactional email integrations, and React Native features using state management, navigation, WebSockets, and native Swift and Kotlin integrations.

I developed backend services for multi-tenant management of users, organizations, roles, and permissions. I implemented authentication, RBAC/ABAC authorization, SSO integrations, and secure API workflows.

I built and maintained service integrations, database operations, API documentation, and automated tests using Node.js, TypeScript, NestJS, Express, PostgreSQL, MongoDB, Keycloak, and Docker.

I built production-ready user stories for a cross-platform mobile application using React Native and Expo. I implemented responsive interfaces, reusable components, navigation flows, API integrations, and MongoDB-backed data workflows.

I supported quality through monitoring, analytics, testing, and native integrations for iOS and Android. The application used TypeScript, Mongoose, React Query, Zustand, Swift, Kotlin, and Sentry.

I developed and maintained web and mobile applications across logistics, e-commerce, and business-management domains. I designed software architectures and translated business requirements into scalable technical solutions.

I developed backend APIs, payment integrations, real-time tracking systems, and business workflow automation. I participated in the full delivery lifecycle, from requirements gathering through deployment and production support.

I led the migration of a production logistics platform from Angular to React and Ionic. I implemented authentication, geolocation tracking, state management, and mobile-first operational workflows.

I coordinated testing, release, and deployment activities for App Store and Google Play distribution.

I developed and maintained large-scale web scraping and data extraction platforms processing high volumes of public web data. I improved scraper reliability, monitoring, and performance across multiple production pipelines.

I modernized legacy applications, supported data-quality initiatives, mentored junior developers, and acted as a team lead backup.

I created and maintained business solutions in C# using ASP.NET MVC, JavaScript, and SQL Server. I implemented MVC application features, database integrations, and internal process-automation tools.

I managed .NET dependencies with NuGet and collaborated with stakeholders on operational enhancements.

I developed cross-platform mobile applications using React, React Native, Expo, Angular, and Ionic. I implemented geolocation, payment integrations, API connectivity, responsive interfaces, and end-to-end mobile delivery.

I contributed to mobile application implementation and delivery for production-oriented projects.

Software Programming Technician program.