Software Engineer · 2021 – Present
StarLabs
Backend microservices for high-traffic regulated platforms serving up to 20M users. Player Account Management, partner integrations, Orleans clusters, Kafka pipelines.
Hello,
I’m Lorik Kastrati.
Senior Backend Engineer
I build scalable distributed backend systems and integrate AI into production — for teams shipping to millions of users.
Prishtinë, Kosovo
At a glance
- Languages & Frameworks
- C#.NET 8 / .NET 10ASP.NET CoreJavaScriptTypeScript
- AI & Automation
- OpenAI API (Vision, LLM)Prompt Engineeringn8nOCR Pipelines
- Architecture
- MicroservicesClean ArchitectureDDDEvent-DrivenCQRS
- Messaging & APIs
- KafkaRabbitMQMassTransitgRPCRESTOutbox Pattern
- Data
- PostgreSQLSQL ServerRedisElasticsearchEF Core
- Distributed Systems & Cloud
- Microsoft OrleansAWSKubernetesDocker
- Observability
- OpenTelemetryPrometheusGrafanaKibanaJaegerSerilog
- CI/CD
- TeamCityOctopus DeployArgoCDGit
About
A backend engineer
who ships systems that scale.
Six years building distributed backend systems in .NET — event-driven microservices, Microsoft Orleans for distributed state, high-throughput messaging on Kafka and RabbitMQ. Lately wiring AI into production: OpenAI Vision pipelines, OCR, and LLM-driven automation. Shipped to platforms serving brands with up to 20M users across fintech and healthcare.
Currently at StarLabs
- Years
- 0+
- Users
- 0M
- Services
- 0+
- Reply time
- 0h
Shipping production backend systems
Reached by platforms I've contributed to
Microservices owned end-to-end
Email response, usually faster
Experience
Where I’ve been shipping.
6+ years shipping production backend systems — across regulated, fintech, and AI-driven platforms.
Employment History
Software Developer · 2020 – 2021
Qonterra
REST APIs in .NET powering real-estate finance analytics. Financial endpoints — IRR, valuation, cash-flow modeling — plus front-end work on the analytics UI.
Focus Areas
Self-directed · Ongoing
AI Integration
OpenAI Vision pipelines, OCR, and LLM-driven automation in production. Shipped AccountantApi: invoice capture over Telegram, AI extraction, .NET 10 backend.
Learn moreSpecialization · 6+ years
Distributed Systems
Microsoft Orleans virtual actors, event-driven microservices, async messaging via Kafka and RabbitMQ, Redis caching, Kubernetes on TeamCity → Octopus → ArgoCD.
Learn moreFeatured Projects
Things I’ve built recently.
AI Sales CRM & Outreach Platform
Sales Copilot
Full-stack CRM that turns scraped prospects into closed deals: a drag-and-drop deal pipeline, lead scoring, SMS/email conversation threads, appointment booking, and live calling via Telnyx WebRTC with Deepgram transcription. Clean .NET 8 layered backend (Domain / Application / Infrastructure / API), Hangfire background jobs, and a Next.js 16 frontend.
AI-Powered Accounting Platform
AccountantApi
Multi-tenant accounting platform for Kosovo SMBs. Users photograph invoices in Telegram; an OpenAI Vision pipeline extracts tax IDs, amounts, and dates and posts them to the API automatically. Built the full backend in .NET 10 with a 40+ node n8n workflow orchestrating the AI pipeline.
Multi-Tenant Billing & Stripe Integration
PayAPI
Centralized SaaS billing platform supporting multiple products. End-to-end Stripe integration: PaymentIntents, subscriptions, invoices, webhook-driven billing. Dual-mode auth with API keys for service clients and JWT + RBAC for admin.
More projects
Distributed Microservices Platform
ELibrary
Portfolio system covering Books, Users, Orders, and Consumer services. Async communication via RabbitMQ + MassTransit, Elasticsearch for catalog search, full observability stack with OpenTelemetry, Prometheus, Grafana, and Jaeger.
.NETRabbitMQElasticsearchOpenTelemetryGrafanaDocker
AI Product Imagery & Ad Generator
Ad Studio
A web UI over an autonomous ad agent: paste a product link and get a consistent multi-angle product lookbook, TikTok/Meta ad scripts + creatives, or a generated Shopify storefront — all in your shop's house style. FastAPI backend orchestrates the agent as a subprocess and streams results to a Vite + React front end.
ReactViteFastAPIPythonfal.aiClaude Agent
AI tooling, SaaS prototypes, mobile
Other Side Projects
AI image and video generation tools, additional SaaS prototypes, and small mobile apps. Built mostly to learn fast and ship even faster.
TypeScriptPythonReact Native
AI Agents Workforce
Meet the Agents team
A registry-driven AI workforce — a single agents.json powers both a Streamlit dashboard and a Telegram bot, and every agent runs isolated in its own venv as a subprocess with live-streamed output. Here's the crew, one specialist per job.
PythonClaude Agent SDKStreamlitTelegram Botuv
Product Finder
Dropshipping Product Researcher
Hunts winning products across Google Trends, Reddit, TikTok, Amazon & AliExpress — and rejects the saturated ones.
Lead Prospector
B2B Sales Researcher
Finds funded startup leads by sector and city, with decision-makers and LinkedIn profiles attached.
Website Prospector
Web-Design Lead Gen
Scouts local businesses with missing or outdated websites, diagnoses what's wrong, and frames the pitch.
Pitch Builder
Outreach Designer
Turns each prospect into a personalized HTML mockup and a cold email, saved as a Gmail draft for review.
Ad Scripter
Direct-Response Ad Writer
Writes TikTok & Meta ad scripts — angles, hooks, scenes, CTAs — and can spin up the images and clips too.
Clip Poster
Social Media Manager
Cuts long videos into 9:16 highlight clips, writes per-platform captions, and posts them everywhere.
Shopify Builder
Storefront Builder
Builds a full Shopify store — product, collection, pages, menu and theme — from a single ad spec.
Recruiter
Personal Talent Scout
Surfaces remote SWE roles matching your profile across job boards, deduped so you never see one twice.
Pre-Pump Scanner
Crypto Setup Scanner
Scans the top Binance perps for swing pre-pump setups with invalidation levels. Informational only.
Get in touch
Let’s build something together.
Best way to reach me is email. I read everything and reply within a day — happy to talk backend architecture, AI integration, or new opportunities.