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I'm Alexandru Ion, a Senior Full-Stack Developer and Team Lead with 9+ years of experience delivering scalable web products across food tech, fintech, and high-traffic e-commerce. I'm passionate about building reliable, scalable platforms and leading teams to deliver high-quality software quickly. I specialize in React, Node.js, GraphQL, microservices, and data modeling with Neo4j and Firebase, and I focus on rapid iteration, maintainable architecture, and platform modernization to support business growth.…I'm Alexandru Ion, a Senior Full-Stack Developer and Team Lead with 9+ years of experience delivering scalable web products across food tech, fintech, and high-traffic e-commerce. I'm passionate about building reliable, scalable platforms and leading teams to deliver high-quality software quickly. I specialize in React, Node.js, GraphQL, microservices, and data modeling with Neo4j and Firebase, and I focus on rapid iteration, maintainable architecture, and platform modernization to support business growth.

Alexandru Ion

Full Stack Developer, Web Developer, Back-End Developer, +2

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I'm Alexandru Ion, a Senior Full-Stack Developer and Team Lead with 9+ years of experience delivering scalable web products across food tech, fintech, and high-traffic e-commerce. I'm passionate about building reliable, scalable platforms and leading teams to deliver high-quality software quickly. I specialize in React, Node.js, GraphQL, microservices, and data modeling with Neo4j and Firebase, and I focus on rapid iteration, maintainable architecture, and platform modernization to support business growth.…I'm Alexandru Ion, a Senior Full-Stack Developer and Team Lead with 9+ years of experience delivering scalable web products across food tech, fintech, and high-traffic e-commerce. I'm passionate about building reliable, scalable platforms and leading teams to deliver high-quality software quickly. I specialize in React, Node.js, GraphQL, microservices, and data modeling with Neo4j and Firebase, and I focus on rapid iteration, maintainable architecture, and platform modernization to support business growth.

Available to hire

I’m Alexandru Ion, a Senior Full-Stack Developer and Team Lead with 9+ years of experience delivering scalable web products across food tech, fintech, and high-traffic e-commerce. I’m passionate about building reliable, scalable platforms and leading teams to deliver high-quality software quickly.

I specialize in React, Node.js, GraphQL, microservices, and data modeling with Neo4j and Firebase, and I focus on rapid iteration, maintainable architecture, and platform modernization to support business growth.

Skills

Experience Level

Expert

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Intermediate

Work Experience

Senior Full-Stack Developer (Team Lead) at Beaverr Territory SRL

March 1, 2021 - November 1, 2025

Acted as Team Lead for a Seattle-based food tech startup, owning end-to-end delivery across frontend and backend. Increased team productivity by 3× by introducing a lightweight task validation process with clear acceptance criteria and fast reviews. Delivered a rental property reviews aggregation MVP in 2 months using React and Firebase. Developed React UI for an on-demand delivery platform in the Philadelphia area, integrating Stripe payments, GetSwift delivery tracking, and Mailchimp automation. Improved maintainability through reusable UI patterns and practical performance optimizations; supported release execution by raising code review quality and reducing rework.

Team Lead | Full-Stack Developer at Pentalog

May 1, 2017 - October 1, 2020

Served as Scrum Master and technical reference for a team of 6, coordinating planning, delivery, and engineering standards. Contributed to scaling the engineering org from 4 to 26 members in two years by participating in ~40 interviews and mentoring new hires. Migrated a backend monolith to a microservices architecture and redesigned the website, supporting 400% revenue growth over two years. Maintained 80%+ test coverage through strong practices and CI quality gates. Conducted R&D to improve performance, maintainability, and developer experience. Traveled to London to deliver a time-sensitive deadline requiring duplication of the website while sharing a database.

Full-Stack Developer (Contract) at Pentalog

February 1, 2016 - April 1, 2017

Worked on a large e-commerce platform for a leading lens retailer with 50,000 monthly sales and 100,000 daily visits. Diagnosed and resolved production issues, reducing defects and improving stability. Led a complete website redesign across a 3-month delivery cycle, coordinating implementation and rollout. Refactored key flows and standardized UI patterns to improve user experience and maintainability.