Senior Full-Stack Engineer

I design software-development evaluation tasks for OpenAI AI Lab, including research prompts, required file artifacts, and source-backed binary rubrics. I have delivered tasks covering Next.js and Vercel database choices, Next.js cookies and CSRF, and Core Web Vitals diagnosis.

I test models to identify genuine capability gaps, review other experts' submissions, and validate artifacts and formulas directly. I also built delivery tooling including a rubric linter, a nine-gate workflow, and Claude Code skills.

I am a top contributor across Angular applications and a Spring Boot service for an enterprise GRC client. I built an Angular 21 e-invoice validation gateway, including a 31-component atomic layer, and implemented backend capabilities such as Hibernate multi-tenancy, email verification, per-IP rate limiting, and Flyway migrations.

I lead frontend development for a document-management product in an Nx monorepo, including a React 19 TipTap editor embedded in Angular with Yjs collaboration. I also created a Playwright suite with 169 test cases and contributed to an agent-based delivery pipeline with implementation, review, and QA guardrails.

I led a settings-module redesign for a multi-tenant HR SaaS, delivering more than eight screens from Figma to production in a 17-package Next.js Turborepo. The work included drawer editing flows, Zod validation, and design-token implementation.

I also built role-based access control with custom roles, seat types, and owner protection, plus an interview-scheduling workflow using GraphQL and Apollo.

I shipped Lumigo's LLM evaluation UI end to end, including the scoring module, evaluation filters, score aggregations, route architecture, and feature-flag rollout. I was a core author of the AI-traces package and LLM invocation-details experience.

I built LLM trace interfaces for OpenAI, Anthropic, Amazon Bedrock, Gemini, and Vertex, covering provider badges, token cost, cost time series, OpenTelemetry spans, and service-graph nodes. I also led work on real-time log streaming, bi-weekly releases, customer demos, code reviews, and engineer mentoring.

I migrated a large Angular application from Angular 12 to Angular 18, reducing build time from 272 seconds to 99 seconds and reducing vulnerabilities from 65 to 3. I also integrated React modules into the Angular host through Module Federation.

I delivered 62 new components in a 439-component application, including a two-factor authentication security page. I additionally led team activities by conducting hiring interviews and mentoring a mid-level engineer.

I improved application load time from approximately 4.5 seconds to 2.7 seconds and raised Lighthouse UX metrics by 30 percent. My work focused on frontend performance and a reliable user experience.

I designed the interface layer between Angular and React modules, reducing cross-framework bugs by 70 percent.

I helped establish the startup's frontend architecture by selecting and implementing Angular 2+. I developed product features across the web application stack.

I also built backend functionality using Symfony and Laravel, gaining experience with PHP-based application development and startup delivery.

I built and operate GigaWork, a production AI job-search bot that processes more than 37,000 job posts from 18 sources. The platform uses deterministic gates, structured LLM scoring, Telegram delivery, Next.js, Vercel, Neon Postgres, Drizzle, and a Postgres-backed background-job queue.

I created a hand-labelled evaluation set from production traces, implemented an error taxonomy with code-verifiable failure types, and measured LLM cost per call to optimize the production architecture. The product also includes CV and cover-letter tailoring, atomic email-application workflows, and a browser agent for ATS form completion.

Bachelor of Science in Quantum Electronics Engineering.