Tijana Petrovic

About

Full Stack Engineer with 5+ years of experience building scalable SaaS applications using React, Next.js, Node.js, TypeScript, and AWS. Specializes in backend architecture, API development, and performance optimization, delivering 35–40% efficiency gains and supporting applications used by 10K+ users. Experienced in AI-powered workflow automation, cloud deployments, PostgreSQL and MongoDB data modeling, and Docker-based CI/CD pipelines.

Experience

• Full Stack Engineer – Independent Contractor · BrainRocket07-01-2022 –

  Built and scaled full-stack applications using React, Next.js, Node.js, and TypeScript; Improved application performance by 35–40% through optimization and refactoring; Designed and developed REST APIs and backend services; Supported applications with 10K+ users and handled 50K+ monthly requests; Integrated frontend and backend systems ensuring efficient data flow; Worked with PostgreSQL and MongoDB for data modeling and query optimization; Used Docker and CI/CD pipelines for development and deployment; Managed AWS infrastructure with 99%+ uptime; Integrated OpenAI APIs to automate support workflows and chatbot functionality.

• Full Stack Developer – Software Development Projects · Comtrade Group09-01-2019 – 06-01-2022

  Delivered 8+ production applications using React and Node.js; Built responsive user interfaces and integrated backend APIs; Designed database schemas and worked with relational and NoSQL databases; Participated in Agile development, testing, and code reviews.

• Junior Frontend Developer · Comtrade Group2018 – 2019

  Developed reusable UI components and improved user experience; Collaborated with backend teams on API integration.

Education

• Alfa BK UniversityBachelor's Degree, Computer Science

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