Roman K.

I help design and build AI-powered products, scalable backend systems, APIs, integrations, and cloud infrastructure that solve real business problems.

I’m a senior software engineer with hands-on experience delivering production systems in Fintech, AdTech, SaaS, and AI environments. My focus is building reliable software that scales, integrates cleanly, and creates measurable business value.

** What I can help you with:**

• Backend architecture and development
• AI product backends, agent systems, data pipelines
• REST APIs, microservices, event-driven systems
• Third-party integrations (payments, accounting, ecommerce, ads platforms, auth providers)
• Cloud infrastructure (AWS / GCP) and CI/CD pipelines
• Performance optimization and reliability improvements
• Debugging difficult production issues
• Turning business requirements into production-ready systems

Relevant Experience:

✔ Built distributed systems analyzing advertising performance for high-budget campaigns

✔ Developed fintech platforms with financial and accounting integrations

✔ Built secure authentication and authorization services

✔ Designed scalable event-driven architectures

✔ Created structured/unstructured data pipelines for AI workflows