fig.01 — portrait.jpghover to resolve

Based in Graz, Austria · --:-- local

Umejr Džinović

Next.js and Spring Boot developer, studying software engineering in Graz. I build Spring Boot APIs with stateless JWT auth and the Next.js apps on top — containerised with Docker, shipped through CI/CD. Currently writing my bachelor thesis and learning Kubernetes, gRPC and microservices.

↓ scrollSpring Boot · Next.js · Docker · CI/CDØ 1.20 · writing my bachelor thesisgithub.com/Umex10 ↗

02 / shell

Ask the terminal.

A zsh that knows me. Run a command, open a project, or change the prompt and accent from the gear icon — the whole site follows along.

tab completes · ↑↓ history · ctrl+l clears

umejr@graz — ~/dev-resume — zsh

Welcome to umex10 — zsh 5.9 (x86_64-linux-mint)

Type help to see what I can do.

umejr~/dev-resume⎇ main

zsh 5.9 · utf-8 · arrow● violet · 3 lines

03 / work

Selected work.

6 deep dives · 20 public repositorieshover the preview — real source code sits behind the glass

01OverexProject work + bachelor thesis · Java 21 · Spring Boot · Microservices 02AuthKitAuthentication microservice · Java 21 · Spring Boot 4 · Spring Security 03ChatexSocial website · Next.js · TypeScript · Spring Boot 04RenderexAI note-taking · Next.js · TypeScript · Firebase 05DSA SolutionsLeetCode & algorithms · Java · Next.js · Algorithms 06Dev-Resume v1Personal site · Next.js · React 19 · TypeScript +14 more — smart-kassa, task-manager, dsa-exercises …all repositories ↗

overex — in progress · FH JOANNEUM

● in progressOverexNext.js → Gateway → auth · event · order → gRPC → inventory → PostgreSQL

Flash-sale ticketing that stays up under load and never oversells — on Kubernetes.

Java 21Spring BootMicroservicesgRPCKubernetesDockerPostgreSQL

Open deep dive

04 / status

By the numbers.

contributions · last 52 weeksdrag to orbit

contribution skylinelessmore

Ø grade · MSD Kapfenberg

1.20

1 · best2345

Software Engineering · FH JOANNEUM, Graz

contribution streak

250days · longest

currently building · bachelor thesisFH JOANNEUM · WS 26/27 + SS 27

OverexFlash-sale ticketing on Kubernetes. Thousands of buyers, one last ticket — the platform has to stay up and must never sell it twice. Spring Boot microservices, gRPC between services, RS256 JWTs from my AuthKit.

Deep dive

thesis — strategies against overselling, at 1 / 3 / 5 / 10 replicas

01 · project work + thesisTicket lock system

02 · thesisRedis reservation

03 · thesisQueue · Kafka

learning right nowKubernetesgRPCMicroservices

public repositories20TypeScriptJava3 achievements

Spring Boot
Next.js
Java
TypeScript
JWT
Spring Security
Docker
Kubernetes
gRPC
PostgreSQL
React
React Native
JUnit 5
Vitest
Playwright
GitHub Actions
Tailwind
shadcn/ui
RTK Query
Firebase
WebSocket
Redis
Kafka
Vercel
Railway
Linux
Git
Expo

06 / stack

The toolbox.

Strengths: Spring BootNext.jsJWT · HS256 / RS256Spring Security
Languages: JavaTypeScriptJavaScriptSQLHTML/CSSYAML
Backend: RESTWebSocketJPASwaggerPostgreSQLFirebase
Frontend: React 19Server Actionsproxy / middlewareinstrumentationTailwindshadcn/uiRTK Query
Mobile: React NativeExpo
Testing: JUnit 5MockMvcVitestTesting LibraryPlaywright
Ship: DockerDocker ComposeGitHub ActionsCI/CDRailwayVercelGit
Learning: KubernetesgRPCMicroservicesRedisKafka

07 / contact

Need me?

Let's talk.

GitHub ↗

↓ scrollSpring Boot · Next.js · Docker · CI/CDØ 1.20 · writing my bachelor thesisgithub.com/Umex10 ↗

name: ci on: push: branches: [main] pull_request: jobs: backend: runs-on: ubuntu-latest defaults: { run: { working-directory: apps/backend } } steps: - uses: actions/checkout@v4 - uses: actions/setup-java@v4 with: { distribution: temurin, java-version: 21, cache: maven } - run: chmod +x mvnw && ./mvnw -B verify # JUnit 5 + MockMvc (H2 test profile) web: runs-on: ubuntu-latest defaults: { run: { working-directory: apps/web } } steps: - uses: actions/checkout@v4 - uses: actions/setup-node@v4 with: node-version: 22 cache: npm cache-dependency-path: apps/web/package-lock.json - run: npm ci - run: npm run test:unit # Vitest + Testing Library - run: npm run build e2e: runs-on: ubuntu-latest services: db-test: image: postgres:17.7 env: POSTGRES_USER: testuser POSTGRES_PASSWORD: testpass POSTGRES_DB: authkit-test ports: ["5433:5432"] options: --health-cmd pg_isready --health-interval 5s --health-retries 10 defaults: { run: { working-directory: apps/web } } steps: - uses: actions/checkout@v4 - uses: actions/setup-java@v4 with: { distribution: temurin, java-version: 21, cache: maven } - uses: actions/setup-node@v4 with: node-version: 22 cache: npm cache-dependency-path: apps/web/package-lock.json - run: chmod +x ../backend/mvnw && npm ci - run: npx playwright install --with-deps chromium - run: npx playwright test # boots backend :8081 + web :3000 env: { CI: "true" } image: needs: [backend, web, e2e] if: github.ref == 'refs/heads/main' && github.event_name == 'push' runs-on: ubuntu-latest permissions: { contents: read, packages: write } steps: - uses: actions/checkout@v4 - uses: docker/login-action@v3 with: registry: ghcr.io username: ${{ github.actor }} password: ${{ secrets.GITHUB_TOKEN }} - uses: docker/build-push-action@v6 with: context: apps/backend push: true tags: | ghcr.io/umex10/authkit-backend:${{ github.sha }} ghcr.io/umex10/authkit-backend:latest

UMEJRDŽINOVIĆUmejr Džinović

Ask the terminal.

Selected work.

By the numbers.

The toolbox.

UMEJRDŽINOVIĆUmejr Džinović

Ask the terminal.

Selected work.

By the numbers.

The toolbox.

Commit to container.

Umejr Džinović

Umejr Džinović