PLAYER SELECT
UMEJR
DEMIR
CLASS:
I build and ship products end-to-end — from backends and databases to web, mobile and the infrastructure that runs them.
GITHUB
30
REPOS
1066
CONTRIB
STREAK
40 DAYS
TOP TECHTypeScript · Go · Dart
CONTRIBUTIONS
Last 20 weeksLESSMORE
github.com/demac44SELECT STAGE
10 CLEAREDVIEW
◀ ▶ USE ARROW KEYS OR BACK / FWD BUTTONS TO BROWSE
GoBosnia Mobile Appabout:gobosnia-mobile
GoBosnia Mobile App
A curated guide to places, events, tours and routes across Bosnia & Herzegovina.
AVAILABLE ON GOOGLE PLAY & APP STORE
STAGE 01/10★★★LIVE
PLAYER PROFILE
LVL 05 · SARAJEVO, BA
5+
YEARS
10+
SHIPPED PROJECTS
SARAJEVO
BASE
QUEST LOG
3 QUESTSLVL 03Plamen
ACTIVE
- Founded and operate an independent software studio focused on building and shipping software products from concept to production.
- Design, build, and maintain products across web, mobile, and desktop, including GoBosnia, Zeno, and Dockmaster (see Selected Projects).
- Own the complete engineering lifecycle, from system architecture and data modeling to application development, CI/CD, deployment, and production operations.
- Build and operate the backend, clients, databases, and infrastructure for each product, with a focus on maintainability, reliability, and independent delivery.
GoTypeScriptFlutterNext.jsPostgreSQL/PostGISElectronDockerGitHub Actions
LVL 02Pickleball.com
ACTIVE
- Build and ship frontend features across a large sports platform covering leagues, clubs, tournaments, ladder leagues, and internal administration tools.
- Own frontend development for major areas of the platform, with a primary focus on complex admin workflows and operational interfaces.
- Implement Stripe-backed checkout and subscription flows, handling payment states, retries, failures, and edge cases across the purchase journey.
- Develop reusable design-system components used across the platform, improving consistency and development speed.
Next.jsReactTypeScriptStripeTailwind CSS
LVL 01MB-Smart GmbH
CLEARED
- Architected and deployed the rehype platform, a multi-seller e-commerce system supporting trade-in workflows, shipping integrations, and automated customer communication.
- Designed and implemented a distributed microservices architecture using NestJS and Go, with RabbitMQ-based asynchronous processing and Redis caching for performance-critical workflows.
- Optimized PostgreSQL schemas and query performance for inventory-heavy workloads through data modeling improvements, indexing strategies, and targeted caching.
- Owned end-to-end DevOps operations, running containerized services on Docker and Kubernetes with GitLab CI/CD pipelines enabling automated deployments and zero-downtime releases.
NestJSGoPostgreSQLRabbitMQRedisKubernetesNext.js
ACHIEVEMENTS
2 / 2 UNLOCKEDDEGREE
BSc. in Software Engineering (240 ECTS)
Amman Arab University · Amman, Jordan
2020 - 2024
INVENTORY
6 SLOTSLANGUAGES
Languages
GoTypeScriptJavaScriptDartPython
BACK-END
Backend & APIs
GoNode.jsNestJSRESTJSON-RPCmicroservicesmessage-driven systems
FRONT-END
Frontend & Mobile
ReactNext.jsFlutterElectronTailwind CSS
DATABASES
Databases & Storage
PostgreSQLPostGISRedisSQLiteMinIO (S3)
INFRA
Infrastructure & Cloud
DockerKubernetesAWSLinuxNginxCloudflare
DEVOPS
DevOps & Tooling
GitHub ActionsGitLab CI/CDGitFirebase
INSERT COIN
1 CREDITI’m always open to discussing new projects and opportunities, or just connecting! Feel free to reach out on any of the following: