10/07/2026 updated
100 % available
Senior Fullstack Engineer - React / Node.js / TypeScript / DevOps
Bistrita, Romania
Only remote
One year of BSc Software Engineering, University of Northampton (UK); self-taughtAbout me
Full stack engineer & technical consultant. Advocate for clean code, type safety, and efficient resource utilisation. Good processes improve delivery - headcount and tools alone won't.
Amazon Web ServicesDevOpsNode.jsSvelteSQL DatabasesTypeScriptTailwindReact.jsVue.jsBackendFull Stack DevelopmentReact NativeFront End Software DevelopmentNestJS
React & React Native Development
Extensive experience building production-grade frontend applications with React and React Native, including work in large cross-functional repositories at FanDuel. Rapid onboarding to React Native within 3 days, coming from a React background.
Node.js & Backend Engineering
Solid backend engineering with Node.js using Fastify, Express, and NestJS. Built a production HTML-to-PDF API (DocPenny) handling 227,000 documents/hour on a single low-cost server, and a Fastify backend-for-frontend aggregating internal APIs at FanDuel.
CI/CD Pipeline Design & DevOps
Design and optimization of CI/CD pipelines using GitHub Actions, Buildkite, and Azure DevOps. Reduced a team PR pipeline from 8-10 minutes to 2, implemented automated end-to-end deployment gates, and managed infrastructure on Google Cloud and Azure.
TypeScript
Primary language across all recent projects, including full migration of a JavaScript codebase to TypeScript at Unumbox and consistent use in all backend and frontend work.
PostgreSQL & Database Design
Use of PostgreSQL in production systems including the DocPenny API. Experience with MongoDB and REST/BFF design patterns as well.
Vue / Nuxt 4
Co-led a full rewrite of a healthcare application using Nuxt 4 with TanStack Query, reka-ui for accessible components, and Tailwind CSS, delivering 80% of the annual roadmap in 4 months.
Performance Profiling & Optimization
Focus on UX and performance optimization, including streaming render pipelines with bounded memory, load testing with k6, and architecture audits for funded startups.
Headless Chromium / CDP Automation
Built a production PDF rendering pipeline using headless Chromium with Chrome DevTools Protocol (CDP), achieving high throughput with minimal resource usage.
Architecture Audits & Rewrites
Experience auditing inherited and AI-generated codebases, identifying issues such as circular dependencies and memory leaks, and leading targeted rewrites with documented conventions.
ESLint Custom Tooling
Authored a custom ESLint plugin flagging inefficient array-method chains, adopted across the company largest repository and several backend services at FanDuel.
Extensive experience building production-grade frontend applications with React and React Native, including work in large cross-functional repositories at FanDuel. Rapid onboarding to React Native within 3 days, coming from a React background.
Node.js & Backend Engineering
Solid backend engineering with Node.js using Fastify, Express, and NestJS. Built a production HTML-to-PDF API (DocPenny) handling 227,000 documents/hour on a single low-cost server, and a Fastify backend-for-frontend aggregating internal APIs at FanDuel.
CI/CD Pipeline Design & DevOps
Design and optimization of CI/CD pipelines using GitHub Actions, Buildkite, and Azure DevOps. Reduced a team PR pipeline from 8-10 minutes to 2, implemented automated end-to-end deployment gates, and managed infrastructure on Google Cloud and Azure.
TypeScript
Primary language across all recent projects, including full migration of a JavaScript codebase to TypeScript at Unumbox and consistent use in all backend and frontend work.
PostgreSQL & Database Design
Use of PostgreSQL in production systems including the DocPenny API. Experience with MongoDB and REST/BFF design patterns as well.
Vue / Nuxt 4
Co-led a full rewrite of a healthcare application using Nuxt 4 with TanStack Query, reka-ui for accessible components, and Tailwind CSS, delivering 80% of the annual roadmap in 4 months.
Performance Profiling & Optimization
Focus on UX and performance optimization, including streaming render pipelines with bounded memory, load testing with k6, and architecture audits for funded startups.
Headless Chromium / CDP Automation
Built a production PDF rendering pipeline using headless Chromium with Chrome DevTools Protocol (CDP), achieving high throughput with minimal resource usage.
Architecture Audits & Rewrites
Experience auditing inherited and AI-generated codebases, identifying issues such as circular dependencies and memory leaks, and leading targeted rewrites with documented conventions.
ESLint Custom Tooling
Authored a custom ESLint plugin flagging inefficient array-method chains, adopted across the company largest repository and several backend services at FanDuel.
Experience
Professional experience5 - 10 years
Freelancer since2026
Languages
EnglishFluent
Project history
Built and operates DocPenny, a production HTML-to-PDF API using Node.js/TypeScript, PostgreSQL, headless Chromium (CDP), and S3-compatible storage. Streaming render pipeline with bounded memory, load-tested at 63 PDFs/s sustained (227K documents/hour). Provides technical advisory for funded startups including architecture teardowns, infrastructure audits, and CI/CD strategy. Published technical writing on engineering and architecture topics.
Second frontend hire on a 7-person consulting team. Audited an AI-generated inherited codebase and co-led a targeted rewrite using Nuxt 4, reka-ui, Tailwind, and TanStack Query against a .NET API. Delivered around 80% of the client annual roadmap in 4 months. Cut the PR pipeline from 8-10 minutes to 2 and added automated end-to-end deployment gates using GitHub Actions.
Worked in the company largest React and React Native repository across 10+ cross-functional teams. Shipped the team first backend service as the only fullstack engineer: a Fastify backend-for-frontend load-tested at 100+ RPS. Consolidated the app modal/dialog layer, wrote a custom ESLint plugin adopted company-wide, and became productive in React Native within 3 days.