// hello world
Haris Skeledžija.
Software Engineer crafting clean, efficient, and meaningful digital experiences.
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About
I'm a software engineer from Bosnia and Herzegovina with a passion for building things that live on the internet. Currently pursuing my Bachelor's in Information Technologies at International Burch University in Sarajevo.
I recently finished a 9-week software engineering internship at ZIRA Group, shipping full-stack features on an enterprise microservices platform with Java, Spring Boot, and Angular. Alongside that I have 4+ years of freelance and side-project experience, from client websites to a Discord platform that reached 1M+ users. I believe the best software is invisible — it just works.
// tech I work with
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Education
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Experience
- ›Delivered full-stack features on an enterprise microservices platform, working in an Agile team with daily stand-ups, issue tracking, merge requests, and mentor code review.
- ›Built backend REST services in Spring Boot — API contracts and DTOs, service and mapper layers, DAO persistence, and input validation — plus a scheduled job that aggregates weekly results automatically.
- ›Developed frontend pages in Angular using an in-house component framework: reusable add/edit forms, image upload with preview, Chart.js data visualisation, and responsive layouts.
- ›Owned one feature end-to-end — low-fidelity mockup, user flow, data model, and API design, then full backend and frontend implementation.
- ›Wrote an integration test suite with JUnit, designed and executed manual QA test cases, and fixed the resulting defects (incorrect query joins, file upload failures, routing and data-mapping bugs).
- ›Tech stack: Java, Spring Boot, Angular, TypeScript, SQL, JUnit, REST APIs, Git.
- ›Designed and led weekly practice sessions for 20+ students in a university education environment.
- ›Guided students in applying functional programming patterns and writing clean, testable JavaScript code.
- ›Produced technical explanations and exercises, translating complex concepts into structured learning material.
- ›Tech stack: JavaScript, Functional Programming paradigms.
- ›Architected and delivered end-to-end web solutions for 4 clients across local transport and fitness industries.
- ›Migrated all 4 client websites to a personal VPS, achieving up to 92% faster load times (e.g. alpus.ba from 10s to 800ms) through infrastructure consolidation and Google PageSpeed Insights optimization.
- ›Owned full project lifecycle solo — from requirements gathering and technical design to deployment and maintenance.
- ›Tech stack: JavaScript, HTML/CSS, WordPress, WooCommerce, MySQL.
- ›Designed and scaled a consumer-facing Discord platform in the social media industry, reaching 1M+ users in the first month.
- ›Architected a media database storing 300K+ assets (GIF, JPG, PNG) with optimized retrieval under high-concurrency load.
- ›Implemented data-driven UX improvements using analytics and user feedback, increasing retention and feature adoption.
- ›Tech stack: JavaScript, Node.js, MongoDB.
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Projects
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Certificates
Introduction to Subagents
Introduction to Agent Skills
AI Fluency for Students
Claude 101
Introduction to Software Development
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Get in touch
I'm always open to new opportunities, collaborations, or just a good conversation. Feel free to reach out.
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