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Eugen-Andrei Coliban

@eugen-andreicoliban

Message

I build scalable Node.js backends, APIs, and AWS serverless systems.

Moldova

Message

At Cognition and Robotics Lab, I build and maintain secure Node.js, TypeScript, and NestJS backend services and REST APIs.

I design AWS serverless systems with Lambda, API Gateway, SQS, and S3, and work with the CTO on architecture, workflows, and database design.

I optimized PostgreSQL and TypeORM queries to reduce API response time from 15 seconds to 100ms. I also develop AI-integrated services and MCP servers that expose backend functionality to AI models.

Earlier, I delivered React Native applications, full-stack payment flows with Stripe, and Node.js services using Fastify and Koa.js. I collaborate closely with front-end, product, and QA teams to ship production-ready releases.

Experience

Work history, roles, and key accomplishments

Current

Software Developer

Current

Cognition and Robotics Lab (CoRLab)

Jun 2021 - Present (5 years 3 months)

• Designed, implemented, and maintained secure backend services and REST APIs using Node.js, TypeScript, and NestJS with authentication and error handling
• Built scalable serverless systems on AWS using Lambda, API Gateway, SQS, S3, and Serverless Framework
• Collaborated with CTO to define system architecture, workflows, and database design
• Designed relational database schemas with PostgreSQL/

React Native React NodeJS PostgreSQL NestJS AWS Lambda Next.js S3 Serverless Framework DynamoDB TypeScript Model Context Protocol (MCP)Amazon SQS API Gateway

React Native Developer

Upwork

Apr 2021 - Jul 2021 (3 months)

Highlights:
• Developed a mobile application using React Native with Redux and React Navigation
• Integrated APIs using Axios and managed application state
• Built responsive and reusable UI components using third-party libraries
• Assisted in backend development using Fastify, including implementing payment flows with Stripe
• Contributed to full-stack functionality by integrating Stripe

Sequelize Fastify React Native Next.js

Software Engineer

BearWM - Bear With Me

Feb 2020 - Apr 2021 (1 year 2 months)

Highlights:
• Implemented backend functionality using Node.js and Koa.js
• Performed data scraping and processing for business intelligence purposes

Technology Stack:
• Node.js, Koa.js
• Data scraping tools

React Native KoaJS React Handlebars.Js ElectronJS

React Native Developer

BearWM - Bear With Me

Aug 2018 - Feb 2020 (1 year 6 months)

Highlights:
• Developed and maintained mobile applications using React Native
• Implemented application features and improved user experience
• Integrated APIs and handled client-side logic

Technology Stack:
• React Native
• JavaScript

React Native

Web Developer

Labs42

May 2018 - Aug 2018 (3 months)

Highlights:
• Developed a React Native mobile application
• Built frontend components using React.js
• Assisted in application development and feature implementation

Technology Stack:
• React Native
• React.js

React Native React