03/02/2026 updated
100 % available
Senior Full-Stack Web Developer with Backend Focus
Zagreb, Croatia
Only remote
Master's in Computer EngineeringJavaScriptPHPApplication Programming Interfaces (APIs)Amazon Web ServicesAutomationCloud ComputingCode CoverageSoftware QualityData EntryExtract Transform Load (ETL)Database QueriesLinuxDevOpsWeb DevelopmentPayment Systems
Full-Stack Web Development
Expertise in PHP, JavaScript/TypeScript, React, Next.js with over 20 years of experience building scalable web applications and platforms handling 100k+ daily visitors
Database Management and Optimization
Advanced skills in MySQL, NoSQL, GraphQL, Apache SOLR, and MongoDB with proven ability to optimize complex reporting datasets and reduce query execution time by 83%
Cloud Infrastructure and DevOps
Proficiency in AWS, Docker, Kubernetes, CI/CD pipelines, Linux systems, and modern deployment workflows including GitHub Actions for consistent releases
Backend Framework Development
Extensive experience with Symfony and Laravel frameworks for building robust backend systems and APIs
Search and Data Processing
Implementation of Apache SOLR, OpenSearch, and custom search algorithms for complex data filtering and geospatial searches
API Development and Integration
Development of RESTful APIs, Twilio integration, PayPal payment systems, and custom internal integrations
Data Pipeline Automation
Creation of ETL pipelines using PowerShell and ProFTPd, eliminating manual work and reducing data entry errors
Performance Optimization
Server response time optimization, database query tuning, and system architecture improvements for high-traffic applications
Quality Assurance and Testing
Implementation of rigorous testing strategies, code quality standards, and technical screening processes with 90% test coverage
Expertise in PHP, JavaScript/TypeScript, React, Next.js with over 20 years of experience building scalable web applications and platforms handling 100k+ daily visitors
Database Management and Optimization
Advanced skills in MySQL, NoSQL, GraphQL, Apache SOLR, and MongoDB with proven ability to optimize complex reporting datasets and reduce query execution time by 83%
Cloud Infrastructure and DevOps
Proficiency in AWS, Docker, Kubernetes, CI/CD pipelines, Linux systems, and modern deployment workflows including GitHub Actions for consistent releases
Backend Framework Development
Extensive experience with Symfony and Laravel frameworks for building robust backend systems and APIs
Search and Data Processing
Implementation of Apache SOLR, OpenSearch, and custom search algorithms for complex data filtering and geospatial searches
API Development and Integration
Development of RESTful APIs, Twilio integration, PayPal payment systems, and custom internal integrations
Data Pipeline Automation
Creation of ETL pipelines using PowerShell and ProFTPd, eliminating manual work and reducing data entry errors
Performance Optimization
Server response time optimization, database query tuning, and system architecture improvements for high-traffic applications
Quality Assurance and Testing
Implementation of rigorous testing strategies, code quality standards, and technical screening processes with 90% test coverage
Experience
Professional experience10+ years
Freelancer since2015
Languages
EnglishFluent
Project history
Offering B2B contracts to clients worldwide, working with PHP, Symfony, Laravel, MySQL, NoSQL, GraphQL, React, Next.js, CI/CD, Linux, AWS, Docker, Kubernetes
Owned end-to-end architecture of complex PHP, AngularJS/Angular, and MySQL ecosystem. Orchestrated platform migration to modern tech stack, leading team of 3 engineers. Modernized PHP runtime and optimized reporting datasets
Developed complex internal integrations and custom features. Optimized long-running MySQL queries significantly reducing load on web/database servers