Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Nebojsa Vlajkovic, a Senior Full Stack and AI Software Engineer with 8+ years of experience delivering scalable, secure, and high-performance web, mobile, and AI-powered applications. I design and build robust back-ends with Microsoft tech (C#, .NET, ASP.NET) and craft modern front-ends using React, TypeScript, and Node.js. I’ve led cross-functional teams in startup environments, integrated AI/LLM features, and deployed cloud-based SaaS solutions on AWS. I also specialize in API development, AI agents, automation workflows, and multi-tenant architectures for SaaS products. I’m a detail-oriented software developer who thrives on turning complex requirements into maintainable systems, reusable components, and polished user experiences. I enjoy collaborating across global time zones and delivering value quickly through iterative, high-quality releases.…Hi, I’m Nebojsa Vlajkovic, a Senior Full Stack and AI Software Engineer with 8+ years of experience delivering scalable, secure, and high-performance web, mobile, and AI-powered applications. I design and build robust back-ends with Microsoft tech (C#, .NET, ASP.NET) and craft modern front-ends using React, TypeScript, and Node.js. I’ve led cross-functional teams in startup environments, integrated AI/LLM features, and deployed cloud-based SaaS solutions on AWS. I also specialize in API development, AI agents, automation workflows, and multi-tenant architectures for SaaS products. I’m a detail-oriented software developer who thrives on turning complex requirements into maintainable systems, reusable components, and polished user experiences. I enjoy collaborating across global time zones and delivering value quickly through iterative, high-quality releases.

Nebojsa Vlajkovic

Web Developer, Full Stack Developer, Front-End Developer, +3





Hi, I’m Nebojsa Vlajkovic, a Senior Full Stack and AI Software Engineer with 8+ years of experience delivering scalable, secure, and high-performance web, mobile, and AI-powered applications. I design and build robust back-ends with Microsoft tech (C#, .NET, ASP.NET) and craft modern front-ends using React, TypeScript, and Node.js. I’ve led cross-functional teams in startup environments, integrated AI/LLM features, and deployed cloud-based SaaS solutions on AWS. I also specialize in API development, AI agents, automation workflows, and multi-tenant architectures for SaaS products. I’m a detail-oriented software developer who thrives on turning complex requirements into maintainable systems, reusable components, and polished user experiences. I enjoy collaborating across global time zones and delivering value quickly through iterative, high-quality releases.…Hi, I’m Nebojsa Vlajkovic, a Senior Full Stack and AI Software Engineer with 8+ years of experience delivering scalable, secure, and high-performance web, mobile, and AI-powered applications. I design and build robust back-ends with Microsoft tech (C#, .NET, ASP.NET) and craft modern front-ends using React, TypeScript, and Node.js. I’ve led cross-functional teams in startup environments, integrated AI/LLM features, and deployed cloud-based SaaS solutions on AWS. I also specialize in API development, AI agents, automation workflows, and multi-tenant architectures for SaaS products. I’m a detail-oriented software developer who thrives on turning complex requirements into maintainable systems, reusable components, and polished user experiences. I enjoy collaborating across global time zones and delivering value quickly through iterative, high-quality releases.

Available to hire

Hi, I’m Nebojsa Vlajkovic, a Senior Full Stack and AI Software Engineer with 8+ years of experience delivering scalable, secure, and high-performance web, mobile, and AI-powered applications. I design and build robust back-ends with Microsoft tech (C#, .NET, ASP.NET) and craft modern front-ends using React, TypeScript, and Node.js. I’ve led cross-functional teams in startup environments, integrated AI/LLM features, and deployed cloud-based SaaS solutions on AWS. I also specialize in API development, AI agents, automation workflows, and multi-tenant architectures for SaaS products.

I’m a detail-oriented software developer who thrives on turning complex requirements into maintainable systems, reusable components, and polished user experiences. I enjoy collaborating across global time zones and delivering value quickly through iterative, high-quality releases.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Advanced

Work Experience

Full Stack Developer at Self-Employed

December 1, 2025 - Present

Design and develop end-to-end web applications with responsive front-ends (React, Vue, Next.js) and secure back-ends (Node.js, Django, Flask). Build and maintain RESTful and GraphQL APIs for multi-platform applications; implement authentication, payment integrations (Stripe, PayPal), and admin dashboards for SaaS products. Collaborate in Agile environments with designers, PMs, and QA to ensure on-time delivery. Integrate third-party APIs (Twilio, Firebase, OpenAI, Web3) to extend product functionality. Develop reusable component libraries and design systems to speed up development. Deploy and manage apps on AWS, GCP, and Docker-based environments to ensure scalability and uptime.

Senior Software Engineer at SHROOMS SOFT

January 1, 2024 - November 1, 2025

Led the development of scalable web applications, internal tools, and custom desktop apps for startups and small businesses, including SaaS MVPs, automation platforms, and AI-assisted solutions. Built microservices and optimized performance; Delivered cloud-hosted applications with Stripe billing, multi-user authentication, and admin dashboards. Developed desktop tools with Electron and PyQt for data visualization and workflow automation.

Senior Frontend Developer at Individual Client

July 1, 2022 - March 1, 2023

Built responsive, high-performance web apps with React, Next.js, and Vue.js; delivered DApps with Web3 integrations including wallet connections, staking, and NFT minting. Translated designs into pixel-perfect interfaces; developed reusable component libraries and design systems; implemented robust state management (Redux, Pinia) and ensured cross‑browser compatibility, mobile responsiveness, and WCAG accessibility.

Mobile App Developer at Ecol d.o.o

June 1, 2022 - December 1, 2023

Developed cross-platform mobile apps for healthcare and logistics using Flutter and React Native; implemented push notifications and managed app publishing; integrated Firebase for authentication, storage, and real-time messaging. Delivered end-to-end projects with client feedback.

AI Engineer at Individual Client

May 1, 2021 - December 1, 2021

Developed data-driven applications in Python, focusing on data processing, analysis, and visualization; designed AI-powered tools including LLM agents, face-processing pipelines, and TTS workflows. Built RESTful APIs with Flask and Django; integrated Stripe, Twilio, and OpenAI; automated workflows and ETL pipelines with Pandas, NumPy, SQLAlchemy; deployed with Docker, GitHub Actions, Heroku, AWS; automated web browsers with Selenium and Puppeteer; performed testing and data extraction with Scrapy.

Junior Web Developer at MDD Software

July 1, 2020 - May 1, 2022

Maintained and customized WordPress and Laravel-based websites; implemented responsive front-end features; fixed cross-browser issues; handled content updates, bug reports, and deployment tasks; gained hands-on client communication and foundational PHP, MVC concepts.

Self-Employed Full Stack Developer

December 1, 2025 - Present

Design and develop end-to-end web applications, delivering responsive front-ends (React, Vue, Next.js) and secure back-ends (Node.js, Django, Flask). Build and maintain RESTful and GraphQL APIs to support multi-platform applications. Implement authentication, payment integration (Stripe, PayPal), and admin dashboards for SaaS products. Collaborate with designers, PMs, and QA teams in Agile environments, ensuring on-time delivery of high-quality features. Integrate third-party APIs (Twilio, Firebase, OpenAI, Web3) to extend product functionality. Develop reusable component libraries and design systems, accelerating development cycles. Deploy and manage applications on AWS, GCP, and Docker-based environments, ensuring scalability and uptime.

Python Expert & AI Engineer at Individual Client

May 1, 2021 - December 31, 2021

Developed data-driven applications in Python, focusing on data processing, analysis, and visualization. Designed and deployed intelligent systems combining AI models with user-facing tools, including LLM-powered agents, face processing pipelines, and TTS workflows. Built and maintained RESTful APIs using Flask and Django to support web and mobile applications. Integrated third-party APIs (e.g., Stripe, Twilio, OpenAI) and created internal wrappers to extend functionality. Automated manual workflows with Python scripts for data parsing, reporting, and API interactions. Constructed and managed ETL pipelines using Pandas, NumPy, and SQLAlchemy for efficient handling of large datasets. Deployed and containerized applications with Docker, GitHub Actions, Heroku, and AWS for scalable, continuous deployment. Automated web browsers using Selenium, Selenium WebDriver, and Puppeteer. Implemented unit and integration tests to ensure high reliability and prevent regressions. Extracted large datase

Education

Bachelor of Science in Computer Science at Faculty of Technical Sciences, University of Novi Sad

January 1, 2018 - January 1, 2022

Bachelor of Science in Computer Science at Faculty of Technical Sciences, University of Novi Sad

January 1, 2018 - December 31, 2022

Qualifications

Full Stack Developer

May 1, 2021 - June 15, 2026

- Design and develop end-to-end web applications, delivering responsive front-ends (React, Vue, Next.js) and secureback-ends (Node.JS, Django, Flask). - Build and maintain Restful and GraphQL APIs to support multi-platform applications. - Implement authentication, payment integration (Stripe, PayPal), and admin dashboards for Saas products. - Collaborate with designers, PMs, and QA teams in Agile environments, ensuring on-time delivery of high-qualityfeatures. - Integrate third-party APIs (Twilio, Firebase, OpenAI, Web3) to extend product functionality. - Develop reusable component libraries and design systems, accelerating development cycles. - Deploy and manage applications on AWS, GCP, and Docker-based environments, ensuring scalability and uptime.