Bugra Koseoglu

Co-founded x402Shield, a security and policy enforcement layer for AI agent payments.

I design the security architecture for pre-signing payment authorization, deterministic policy enforcement, spend controls, and secure agent-to-service payment flows. My work includes cryptographic authorization mechanisms, transaction integrity, replay protection, auditability, and defenses against unauthorized or manipulated payment execution.

The system is being built primarily in Rust, with a focus on secure protocol design, verifiable authorization, and infrastructure for safely operating autonomous payment agents.

Founded TryMarketOps, a B2B market intelligence and lead discovery platform that transforms public market signals into structured, actionable company intelligence.

I lead the product and technical architecture across large-scale data collection, enrichment pipelines, signal processing, company intelligence, opportunity scoring, and backend infrastructure. The platform aggregates and evaluates public signals to help founders, sales teams, agencies, and growth operators understand which companies are relevant, why they matter, and when outreach may be timely.

My work spans distributed data systems, backend engineering, enrichment workflows, PostgreSQL, event-driven architecture, cloud infrastructure, and large-scale market data processing.

Leading the architecture and security of two core product initiatives at DGN Tech Inc.: Vibe Social, a real-time social communication platform, and an AI-driven fraud and abuse detection system.

For Vibe Social, I oversee the architecture of authentication, API gateway, messaging, notifications, WebRTC, CDN, and platform services, along with deployment pipelines, observability, infrastructure, and security controls.

For the fraud detection platform, I work on AI-assisted detection workflows, abuse prevention, risk analysis, decision systems, and the backend infrastructure required to process and evaluate behavioral signals at scale.

My work spans Rust, Go, TypeScript, PostgreSQL, Redis, event-driven systems, WebRTC, containers, AWS, DevSecOps, distributed systems, and security engineering.

Worked independently across software engineering, cybersecurity, blockchain, infrastructure, and DevOps projects for a range of clients and technical initiatives.

My work has included backend APIs, distributed systems, application and offensive security, blockchain infrastructure, smart contract systems, penetration testing, infrastructure hardening, Linux administration, containerized deployments, reverse proxy and WAF architectures, and security monitoring.

I have also contributed to architecture decisions, backend platform design, automation, and secure infrastructure across both experimental and production systems.

Designed scalable and resilient software architectures for complex backend systems, with a focus on service boundaries, domain ownership, module responsibilities, dependency direction, and long-term maintainability.

Provided architectural guidance on system decomposition, communication flows, backend service design, and technical decision-making. Helped reduce architectural debt by clarifying responsibilities between components and improving the overall structure of the platform.