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I'm a seasoned Full Stack Web Developer with over a decade of experience crafting scalable, high-performance web and AI-enabled applications. I specialize in delivering robust front-end experiences with React, Angular, and Blazor, and solid back-end solutions using .NET, Python, Node.js, and Java. I thrive in fast-paced environments and enjoy turning complex problems into elegant, maintainable code. I have led project teams, mentored junior developers, and collaborated cross-functionally to drive product vision to execution. I’m passionate about adopting the latest technologies to push web development forward, optimize performance, and build reliable systems that scale in the cloud.…I'm a seasoned Full Stack Web Developer with over a decade of experience crafting scalable, high-performance web and AI-enabled applications. I specialize in delivering robust front-end experiences with React, Angular, and Blazor, and solid back-end solutions using .NET, Python, Node.js, and Java. I thrive in fast-paced environments and enjoy turning complex problems into elegant, maintainable code. I have led project teams, mentored junior developers, and collaborated cross-functionally to drive product vision to execution. I’m passionate about adopting the latest technologies to push web development forward, optimize performance, and build reliable systems that scale in the cloud.

Aleksandar Mladenovic

Full Stack Developer, Web Developer, Back-End Developer, +2

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I'm a seasoned Full Stack Web Developer with over a decade of experience crafting scalable, high-performance web and AI-enabled applications. I specialize in delivering robust front-end experiences with React, Angular, and Blazor, and solid back-end solutions using .NET, Python, Node.js, and Java. I thrive in fast-paced environments and enjoy turning complex problems into elegant, maintainable code. I have led project teams, mentored junior developers, and collaborated cross-functionally to drive product vision to execution. I’m passionate about adopting the latest technologies to push web development forward, optimize performance, and build reliable systems that scale in the cloud.…I'm a seasoned Full Stack Web Developer with over a decade of experience crafting scalable, high-performance web and AI-enabled applications. I specialize in delivering robust front-end experiences with React, Angular, and Blazor, and solid back-end solutions using .NET, Python, Node.js, and Java. I thrive in fast-paced environments and enjoy turning complex problems into elegant, maintainable code. I have led project teams, mentored junior developers, and collaborated cross-functionally to drive product vision to execution. I’m passionate about adopting the latest technologies to push web development forward, optimize performance, and build reliable systems that scale in the cloud.

Available to hire

I’m a seasoned Full Stack Web Developer with over a decade of experience crafting scalable, high-performance web and AI-enabled applications. I specialize in delivering robust front-end experiences with React, Angular, and Blazor, and solid back-end solutions using .NET, Python, Node.js, and Java. I thrive in fast-paced environments and enjoy turning complex problems into elegant, maintainable code.

I have led project teams, mentored junior developers, and collaborated cross-functionally to drive product vision to execution. I’m passionate about adopting the latest technologies to push web development forward, optimize performance, and build reliable systems that scale in the cloud.

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Intermediate

Work Experience

Senior Full Stack Developer at Knowink

June 1, 2022 - October 28, 2025

Implemented the main web-based RESTful API server in the electronic voting system with Java, Spring Boot, Hibernate, and PostgreSQL. Tuned the JVM for improved performance, memory management, and garbage collection. Implemented microservice architecture with Docker, Kubernetes, and Apache Kafka. Deployed on AWS (EC2, S3, Lambda) and managed database scalability and integrity. Established automated CI/CD with Azure DevOps and monitored production with Sentry. Led requirement discussions, planning, retrospectives, and code reviews in a Scrum team.

Senior Software Engineer at Intempt Technologies

June 1, 2022 - June 1, 2022

Implemented web-based RESTful API server with JavaScript/TypeScript, Node.js, Express.js, Sequelize, and PostgreSQL. Integrated OpenAI model to generate responses and orchestrate actions (PDF generation from templates and document signing). Built UI with React.js, Redux, and server-side rendering with Next.js for performance and SEO. Documented APIs with OpenAPI/Swagger and practiced Test-Driven Development. Deployed on AWS, with assets stored in S3.

Full Stack Engineer at Infosys

May 1, 2020 - May 1, 2020

Debugged and maintained 5+ Java web applications using Spring Boot, Hibernate, Spring Cloud, Spring Data, Angular, and TypeScript. Migrated 12 apps from JPA-based stack to modern payroll, HR, and talent management systems; developed multiple time-clock applications; built microservices with Docker and Kubernetes.

Backend Developer at Amazon

July 1, 2017 - July 1, 2017

Developed consumer-facing features using Python, Django, Pyramid, Flask, and REST APIs; designed and integrated PostgreSQL-backed ontology with a proprietary NLP pipeline. Enabled AWS Data Migration to transfer data to S3 and triggered Lambda functions on S3 events. Built reusable React components for a single-page application and implemented Django REST framework APIs. Automated testing and CI/CD with Jenkins and Ansible; built a Python Scrapy crawler with RabbitMQ; deployed using ECS/EKS.