Ajdin Halac

Founded and architected a full-stack SaaS platform for uptime monitoring and incident management, taking the product from initial concept to a production-ready environment. I engineered a high-performance backend using Golang and Node.js/TypeScript, focusing on concurrency, extreme reliability, and resource optimization. I designed a sophisticated health check system supporting HTTP, gRPC, and GraphQL, utilizing sliding latency windows and failure thresholds for precision monitoring. To ensure near-zero latency for status updates, I implemented a real-time streaming architecture using Server-Sent Events (SSE). The infrastructure is containerized via Docker and orchestrated on Kubernetes to handle service discovery and auto-scaling. I also developed a multi-tenant workspace with role-based access control and integrated complex notification pipelines for Slack and webhooks. This project demonstrates my ability to lead technical strategy and deliver scalable products

Real-Time Financial Data Streaming - Developed passthrough services using ClickHouse, Redis, and Server-Sent Events (SSE) to enable real-time updates for large scale consumer-facing financial feeds. Backend Development with Java Quarkus - Built scalable and efficient backend services leveraging Quarkus for high-performance applications. Real-Time PnL and Equity Streaming - Developed a real time equity calculation service serving over 70k calculations per second consumed by the rest of the backend services to achieve near zero latency copy trading.

Maintaining and adding features to a large monolithic backend service written in Golang. Working with large datasets to create 3D renders and showing assets in 3D space from components stored in MySQL.