Curriculum Vitae

Full-Stack Developer & Tech Enthusiast

Jakov Filip Sabolicek

Full-Stack Developer & Tech Enthusiast

Full-Stack Developer with 3+ years of professional experience building scalable web applications, REST APIs, and developer tools. Specializing in NestJS, TypeScript, and React ecosystems with a strong focus on clean architecture and developer experience.

Koprivnica, Croatia jfkeci@gmail.com GitHub

Core Competencies

Technical Leadership

Architectural decisions, technology selection, coding standards

System Design

Scalability, database optimization, caching strategies

Mentorship

Code reviews, pair programming, knowledge sharing

Cross-functional Collaboration

Translating business requirements into technical solutions

Technical Debt Management

Prioritizing refactoring, balancing features with code health

Incident Response

Production debugging, post-mortems, implementing safeguards

Documentation

Ensuring systems are well-documented for team autonomy

Project Planning

Work breakdown, realistic timelines, early risk identification

Developer

Alma Career Croatia d.o.o.

Oct 2023 — Present

Zagreb, Croatia

Architecture and optimization of high-traffic production systems serving thousands of users daily
Led complete refactoring of API and service architecture, significantly improving performance and scalability
Designed robust migration systems for large-scale data transfers and built a unified backend for multiple applications
Implemented event-driven microservices with RabbitMQ, established CI/CD pipelines and delivered SSR apps with Nuxt
AI-assisted development using Claude Code and structured multi-agent orchestration to accelerate delivery and improve code quality

NestJS Express RabbitMQ AWS (SES, SQS) Turborepo Nuxt TypeScript

Backend Lead

Exordium Ltd.

Feb 2023 — Jul 2023

Zagreb, Croatia

Led backend development for a Web3 crypto gaming platform, architecting secure and scalable APIs using SOLID and REST principles
Built a system for crypto infrastructure control with blockchain interactions via Dev3
Deployed and managed smart contracts on Polygon and Mumbai networks
Managed full infrastructure including serverless architecture on AWS Lambda and CI/CD automation

NestJS TypeScript MySQL AWS Lambda Serverless Framework AWS SQS React Dev3

Backend Developer

Bebabit Ltd.

Mar 2022 — Feb 2023

Zagreb, Croatia

Delivered multiple backend projects in agile environment, leading the full development cycle from planning to deployment
Designed and maintained server and database architecture on PostgreSQL, MongoDB and MySQL
Implemented secure authentication systems with role-based access control
Integrated third-party services including Stripe, Twilio and Getstream; built API docs with Swagger

NestJS TypeORM PostgreSQL MongoDB MySQL Redis Prisma AWS

Full Stack Developer

Arhivpro Ltd.

Aug 2021 — Mar 2022

Koprivnica, Croatia

Built full-stack applications combining PHP backends with modern JavaScript frontends (React, Next.js, Vue.js)
Developed OCR services for document processing using Tesseract and EasyOCR
Engineered geospatial solutions with PostGIS, implementing KMeans clustering algorithms for large datasets
Containerized applications with Docker and managed deployments on Apache and Nginx

PHP Laravel Python Flask React Next.js Vue.js PostgreSQL PostGIS Docker

Internship

Avoco Ltd.

Jul 2021 — Aug 2021

Djurdjevac, Croatia

Developed Laravel applications with Blade templating and implemented authentication using JWT and OAuth2
Built RESTful API foundations with multi-role authorization and API versioning
Created custom WordPress themes for client projects

Laravel PHP MySQL WordPress

Employer Portal

A multi-tenant B2B SaaS employer portal for regional job advertising brands, featuring a Next.js frontend, NestJS REST API, and AWS infrastructure — developed with an AI-assisted workflow using Jira MCP, Figma MCP, and a structured documentation knowledgebase.

TypeScript Next.js 15 NestJS 10 Drizzle ORM MySQL Tailwind CSS v4 Turborepo AWS CDK Google Gemini Playwright

Job Board

A multi-tenant B2B/B2C job advertisement platform with a monorepo architecture featuring consumer-facing job search, organization dashboard, admin panel, and REST API.

TypeScript Next.js 15 React 19 NestJS 10 PostgreSQL TypeORM TailwindCSS Turborepo

Portfolio & Blog — Astro Rewrite

A complete rewrite of my personal portfolio and blog using Astro 5, with a modern component architecture, TypeScript data files, Content Collections, View Transitions, and Shiki dual-theme syntax highlighting.

Astro 5 TypeScript Tailwind CSS v4 Shiki View Transitions GitHub Pages

Code Live

Personal Blog & Portfolio

A multi-language portfolio and blog website with dark mode, syntax-highlighted code blocks, interactive CV with tabbed sections, and SEO optimization.

Hugo TailwindCSS JavaScript Prism.js MermaidJS GitHub Pages

Live

PennyTrail

A personal finance tracker for recording income and expenses, categorizing transactions, and visualizing spending patterns with interactive charts.

React 19 TypeScript Vite Tailwind CSS v4 Zustand Recharts Zod

Code Live

MarkPad

A clean, distraction-free markdown editor with live preview, split-pane editing, multiple notes, dark mode, focus mode, and export options.

React 19 TypeScript Vite 7 Tailwind CSS v4 Zustand v5 marked highlight.js

Code Live

SpreadShop

A fully responsive e-commerce storefront showcasing a digital product catalog for spreadsheet templates with client-side cart and statically generated product pages.

Astro 4 TypeScript CSS Custom Properties

x-db Exercise Database

An exercise repository featuring searchable workouts by muscle group, difficulty, and equipment. Includes a workout builder with PDF export and evidence-based fitness articles.

Astro 5 TailwindCSS MDX TypeScript GitHub Pages

Code Live

Curriculum Vitae

Jakov Filip Sabolicek

Core Competencies

Developer

Backend Lead

Backend Developer

Full Stack Developer

Internship

Univ.bacc.ing.comp - Bachelor's in Computer Science

Languages

By Proficiency

Daily Drivers

Battle-Tested

In The Toolkit

By What I Build

Backend APIs

Frontend Apps

Static Sites

Infrastructure

Data Layer

Employer Portal

Job Board

Portfolio & Blog — Astro Rewrite

Personal Blog & Portfolio

PennyTrail

MarkPad

SpreadShop

x-db Exercise Database