02/12/2026 updated
100 % available
Senior Full-Stack Developer
Baric, Serbia
Only remote
Bachelor's degree in Computer ScienceAbout me
Senior Full-Stack Developer with 7+ years building web applications. Strong in React, Next.js, TypeScript, and Node.js, designing secure REST/GraphQL APIs with SQL and NoSQL databases. Experienced delivering end-to-end solutions, improving performance and UX, and thriving in fast-paced Agile teams.
FlutterJava (Programming Language)Application Programming Interfaces (APIs)Agile MethodologyAmazon Web ServicesAndroid Software DevelopmentApplication Performance ManagementHTML5AuthenticationsMicrosoft AzureMobile Application DevelopmentCloud EngineeringCode ReviewData SystemDatabase Design
Full-Stack Web Development
Expertise in building scalable web applications using React, Node.js, TypeScript, and modern frontend/backend technologies with 7+ years of hands-on experience
Cloud Architecture & DevOps
Proficiency in designing API-first backend systems, implementing CI/CD pipelines, and managing cloud deployments on AWS, Azure, and GCP
Database Design & Optimization
Advanced skills in working with MongoDB, PostgreSQL, MySQL databases, query optimization, and implementing scalable data solutions
Mobile Development
Experience in Android development using Kotlin, Java, and cross-platform solutions with Flutter
Blockchain & Web3 Technologies
Knowledge of Ethereum smart contracts, Web3.js integration, and decentralized application development
Microservices Architecture
Implementation of scalable microservices using Docker, Kubernetes, and API-first design principles
Authentication & Security
Implementation of secure authentication systems using JWT, OAuth, and various authorization mechanisms
Performance Optimization
Expertise in optimizing application performance, reducing load times, and implementing caching mechanisms
Agile Development
Experience with Agile/Scrum methodologies, code reviews, and remote collaboration across distributed teams
Expertise in building scalable web applications using React, Node.js, TypeScript, and modern frontend/backend technologies with 7+ years of hands-on experience
Cloud Architecture & DevOps
Proficiency in designing API-first backend systems, implementing CI/CD pipelines, and managing cloud deployments on AWS, Azure, and GCP
Database Design & Optimization
Advanced skills in working with MongoDB, PostgreSQL, MySQL databases, query optimization, and implementing scalable data solutions
Mobile Development
Experience in Android development using Kotlin, Java, and cross-platform solutions with Flutter
Blockchain & Web3 Technologies
Knowledge of Ethereum smart contracts, Web3.js integration, and decentralized application development
Microservices Architecture
Implementation of scalable microservices using Docker, Kubernetes, and API-first design principles
Authentication & Security
Implementation of secure authentication systems using JWT, OAuth, and various authorization mechanisms
Performance Optimization
Expertise in optimizing application performance, reducing load times, and implementing caching mechanisms
Agile Development
Experience with Agile/Scrum methodologies, code reviews, and remote collaboration across distributed teams
Experience
Professional experience5 - 10 years
Freelancer since2019
Languages
EnglishFluent
Project history
Developed complex data-driven dashboards using React and .NET Core, integrating Java and Golang microservices for backend data aggregation and API endpoints. Optimized SQL queries and caching mechanisms, reducing load times by 45%. Designed CI/CD pipelines in Azure DevOps and implemented centralized logging and monitoring systems.
Architected and deployed cutting-edge web applications using the MERN stack (MongoDB, Express, React, Node.js). Designed and maintained 20+ enterprise web applications, optimized web assets with Webpack reducing page load times by 24%. Built real-time applications using Firebase services and implemented robust security measures.
Developed and maintained full-stack web applications using React, Next.js, Node.js, Express, and PostgreSQL. Designed RESTful and GraphQL APIs, collaborated on Web3 integrations with Ethereum smart contracts. Optimized database schemas and SQL queries, improving system performance by 25%.