Cristian Gatu

Search or run a command...

Search for a page, or run a command

Career

Work experience

7+ years building and scaling web applications across fintech, supply chain, and digital publishing.

March 2025 – Present

Full-Stack Developer · rinf.tech

Iași

Designing and scaling robust web applications in close collaboration with architects and senior engineers, contributing directly to system design and technical direction.

  • Architect scalable, maintainable systems using React, TypeScript, PostgreSQL, GraphQL, and AWS (including SQS)
  • Shape sprint planning and technical direction within a cross-functional Agile team
  • Optimize database performance and data access patterns for high-efficiency queries
  • Diagnose and resolve complex reliability issues across distributed systems
ReactTypeScriptPostgreSQLGraphQLAWSSQS

April 2024 – May 2025

Full-Stack Developer (Contract) · Payset

Remote

Built and scaled fintech applications handling financial data flows within a microservices architecture, with a strong emphasis on data integrity and system reliability.

  • Developed customer-facing interfaces in React and back-office tooling in Remix, backed by TypeScript and NestJS microservices
  • Designed distributed systems for financial data flows, prioritizing consistency, reliability, and data integrity
  • Integrated secure, high-performance APIs across services in a regulated banking environment
  • Partnered with architects on service boundaries, integration patterns, and system design
  • Debugged complex cross-service issues, improving production stability
ReactRemixTypeScriptNestJSPostgreSQL

March 2024 – April 2025

Full-Stack Developer · Eviden

Remote

Built and scaled web applications in parallel with the Payset engagement, contributing to sprint planning and technical decision-making.

  • Developed and maintained applications using Next.js, TypeScript, PostgreSQL, and AWS
  • Optimized database queries and improved overall application performance
  • Diagnosed and resolved issues across existing production systems
Next.jsTypeScriptPostgreSQLAWS

November 2022 – March 2024

Full-Stack Developer · Haufe Group

Remote

Led the rewrite of a legacy company platform and delivered a second product build, shaping technical direction across both efforts.

  • Rewrote a legacy application end-to-end using Remix, GraphQL, TypeScript, AWS, and Pulumi (Infrastructure as Code)
  • Built a second product using React, Next.js, Tailwind, Express, MongoDB, and PostgreSQL
  • Shaped sprint planning and contributed to architectural decisions within an Agile team
  • Delivered new features with clean, maintainable code following engineering best practices
RemixGraphQLTypeScriptAWSPulumiReactNext.jsTailwindExpressMongoDBPostgreSQL

December 2021 – July 2022

Full-Stack Developer (Contract / Freelance) · Seed2shelf Inc

Romania / Remote

Owned the front-end and API architecture for a SaaS platform helping production labs manage inventory, transport, and workflow — including integration with Metrc.

  • Designed and built the front-end architecture and API layer from the ground up
  • Authored technical documentation and led code reviews for the team
  • Mentored two junior developers, supporting their technical growth
  • Translated client requirements into clear technical tasks and sprint goals
TypeScriptNode.jsReactNext.jsNestJSMariaDBBitbucket

October 2020 – June 2021

Full-Stack Developer · Skywind Group

Iași

Delivered two products end-to-end: a sports and betting content platform, and a property management app connecting landlords, administrators, and tenants.

  • Maintained and extended a legacy sports/betting platform, including a new calendar feature linking games to tagged articles
  • Built a property management app, implementing pixel-perfect designs and integrating the subscription billing module
  • Wrote reusable, maintainable React components and effective, well-documented APIs
ReactReduxExpressMongoDBMySQLRedisStyled-ComponentsTypeScript

February 2019 – April 2020

Full-Stack Developer · Bytex Technologies

Iași

Contributed to Powercode, an application helping telecom providers (TV, Internet, Telephone) manage clients and services.

  • Built invoice generation and automated PDF delivery via email
  • Implemented user-defined fields, notifications, and permission management
  • Maintained the codebase, fixed bugs, and implemented pixel-perfect UI designs
JavaScriptTypeScriptNode.jsReactGraphQLMySQL

February 2019 – May 2021

Web Application Developer (Internship) · OSRAM Continental

Iași

Built a desktop tool that parsed structured Excel files and let engineers organize parameters into sub-modules, streamlining internal workflows.

  • Delivered a cross-platform desktop application using React, Electron, and a Flask backend
  • Optimized the application for large datasets
  • Mentored an incoming intern and participated in code reviews
ReactElectronFlaskNode.jsMySQL

Education

Bachelor's Degree, Computer Science

"Alexandru Ioan Cuza" University · Iași · 2017 – 2020