Stefan Scepanovic

About Stefan Scepanovic

I’m a Senior Software Engineer with deep experience building AI-powered systems, full-stack web applications, and production-grade automation for high-impact industries including oil & gas, cybersecurity, and finance. I specialize in turning complex workflows into scalable, user-friendly software—combining strong backend engineering with modern front-end frameworks and applied AI.At Collide, I design and build with my team advanced AI automation for regulatory workflows (W-10, G-10), integrating LangChain, Azure OpenAI, multi-agent systems, and custom PDF-generation pipelines using Python and React frontend. I help develop an end-to-end AI platform that extracts, validates, and structures well data from unstructured documents—reducing report preparation time from hours to seconds.In parallel, I engineer features across the Collide community platform, working across Ruby on Rails, Hotwire/Turbo, PostgreSQL, and native mobile. I’ve delivered major features including analytics dashboards, cohort behavior tracking, user streak systems, badges, leaderboards, and secure authentication for the iOS application.Before Collide, I spent several years as a full-stack developer and team lead at SSL.com and Kaufman Rossin, where I built PKI systems, enterprise authentication flows, internal apps, and high-volume data processing services. I’m experienced in designing scalable architectures, leading engineering teams, and shipping clean, production-ready solutions on tight timelines.I thrive in environments where I can own features end-to-end—architecture, backend, frontend, AI integration, and delivery—and partner closely with leadership and clients to create real business impact.

Experience

1. Software Engineer

   Collide

   Dec 2024 — Present · Houston, TX, US

   Built a robust Ruby on Rails backend supporting real-time user interactions, content feeds, and analytics. • Developed and maintaining the iOS application, including secure login/signup, JWT authentication, and API integrations. • Led features such as user badges, streak tracking, cohort analytics, and an intelligent leaderboard system using PostgreSQL and custom ranking logic. • Implemented Turbo/Hotwire for real-time UX and modernized the app’s architecture. • Created admin dashboards for behavior analytics and cohort-based engagement tracking across seasons. • Continuously shipped high-impact features while maintaining a clean codebase and fast iteration cycle across frontend and backend systems.

Education

• College of Law and Business Studies “USEE”, Nis, Serbia

  Bachelor of Science, Public Security Management, Security Management and Criminal Justice

  2010 — 2013

• Flatiron School

  Software Engineer, Computer Programming, Specific Applications

  2019 — 2019