Open to opportunities

Tijana User

@tijanap001

Message

Senior Full Stack Engineer specializing in scalable React, Node.js, and AWS systems.

Serbia

Message

What I'm looking for

I seek roles where I can design scalable backend architectures, optimize performance, integrate AI automation, and operate cloud infrastructure within collaborative Agile teams.

I am a Senior Full Stack Engineer with 5+ years building and scaling SaaS applications using React, Node.js, and AWS, focused on backend architecture, API design, and performance optimization.

I have driven measurable improvements—reducing API latency by 35–40% through indexing and backend refactoring, managing AWS infrastructure with 99%+ uptime, and delivering AI-powered workflow automation using OpenAI APIs.

I thrive on designing reliable, scalable systems, implementing CI/CD and Docker deployments, and collaborating in Agile teams to deliver production-ready solutions that serve thousands of active users.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Engineer

Current

BrainRocket

Jan 2022 - Present (4 years 2 months)

Designed and scaled SaaS platforms serving 10K+ active users, owned backend architecture and REST API design, and reduced API response times by 35–40% via database indexing and backend refactoring.

React REST APIs AWS Docker CI CD MongoDB OpenAI API

Full Stack Developer

Comtrade Group

Jan 2019 - Jan 2022 (3 years)

Delivered 8+ full-stack web applications and designed scalable MongoDB schemas for high-volume systems while improving frontend performance and contributing to Agile delivery.

React MongoDB TypeScript Express REST APIs Agile Performance Optimization