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Full Stack Developer with experience building, maintaining, and scaling web applications across SaaS, healthcare, and AI-driven product domains. Strong background in modern JavaScript frameworks, backend services, and relational data systems with hands-on work across React, TypeScript, Svelte, Golang, Node.js, and SQL. I’ve delivered end-to-end product features spanning REST APIs, user interfaces, authentication, and performance improvements—while leading migrations and optimizations to keep applications stable at scale. I collaborate in Agile environments and focus on reliability, latency reduction, and clean architecture.…Full Stack Developer with experience building, maintaining, and scaling web applications across SaaS, healthcare, and AI-driven product domains. Strong background in modern JavaScript frameworks, backend services, and relational data systems with hands-on work across React, TypeScript, Svelte, Golang, Node.js, and SQL. I’ve delivered end-to-end product features spanning REST APIs, user interfaces, authentication, and performance improvements—while leading migrations and optimizations to keep applications stable at scale. I collaborate in Agile environments and focus on reliability, latency reduction, and clean architecture.

IVAN POLEKSIĆ

Full Stack Developer, Web Developer, Software Engineer, +2

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Full Stack Developer with experience building, maintaining, and scaling web applications across SaaS, healthcare, and AI-driven product domains. Strong background in modern JavaScript frameworks, backend services, and relational data systems with hands-on work across React, TypeScript, Svelte, Golang, Node.js, and SQL. I’ve delivered end-to-end product features spanning REST APIs, user interfaces, authentication, and performance improvements—while leading migrations and optimizations to keep applications stable at scale. I collaborate in Agile environments and focus on reliability, latency reduction, and clean architecture.…Full Stack Developer with experience building, maintaining, and scaling web applications across SaaS, healthcare, and AI-driven product domains. Strong background in modern JavaScript frameworks, backend services, and relational data systems with hands-on work across React, TypeScript, Svelte, Golang, Node.js, and SQL. I’ve delivered end-to-end product features spanning REST APIs, user interfaces, authentication, and performance improvements—while leading migrations and optimizations to keep applications stable at scale. I collaborate in Agile environments and focus on reliability, latency reduction, and clean architecture.

Available to hire

Full Stack Developer with experience building, maintaining, and scaling web applications across SaaS, healthcare, and AI-driven product domains. Strong background in modern JavaScript frameworks, backend services, and relational data systems with hands-on work across React, TypeScript, Svelte, Golang, Node.js, and SQL.

I’ve delivered end-to-end product features spanning REST APIs, user interfaces, authentication, and performance improvements—while leading migrations and optimizations to keep applications stable at scale. I collaborate in Agile environments and focus on reliability, latency reduction, and clean architecture.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Work Experience

Full Stack Developer at Teza (United Kingdom, Remote)

October 1, 2025 - August 1, 2026

Built end-to-end product features for Teza’s automated video-to-clip platform, spanning Golang backend services, REST APIs, and React/Svelte interfaces used by 100K+ creators. Owned and optimized the Smart Cut feature by processing YouTube videos into AI-generated short clips tailored for social platforms. Improved Golang service logic and caching strategies to reduce latency across upload and processing workflows. Led migration of the frontend from Svelte 4 to Svelte 5, refactoring components to the new runes-based reactivity model and resolving breaking changes to ensure app stability. Developed React and Svelte user interfaces for AI-powered video workflows including authentication, video uploads, processing progress tracking, and delivery of generated content.

Full Stack Developer at Hystrix Medical AG (Switzerland, Remote)

November 1, 2021 - September 1, 2025

Designed and implemented a real-time chat feature for a healthcare platform using React and Golang, enabling instant and reliable communication between hospitals and sellers. Maintained and improved a web application supporting hospitals and sellers across Switzerland, the Netherlands, and Germany by delivering feature updates and optimizations for smooth, reliable daily operations. Designed database schemas and optimized SQL queries while developing backend services with Golang and ColdFusion. Enhanced and extended existing healthcare platform components by improving legacy ColdFusion modules and integrating modern frontend interfaces with backend services. Collaborated with product, design, and DevOps teams in an Agile environment, participating in planning, production releases, and monitoring post-release behavior.