I design and build production-oriented systems around explicit contracts, predictable failure handling, security, and long-term maintainability. My work spans backend platforms, asynchronous workflows, authentication, multi-tenant systems, developer tooling, and operational infrastructure.

Currently building independent software products through Kopf Studio

I'm a senior software engineer with 7+ years of experience building backend systems, APIs, automations, internal platforms, and production-oriented software products.

My work focuses on systems that must remain reliable as complexity grows: authentication, billing, authorization, asynchronous processing, integrations, security-sensitive workflows, and operational tooling.

I combine software architecture, product thinking, automation, and business operations to build systems that solve practical problems.

Proof-first vulnerability reproduction and patch-behavior validation for open-source maintainers.

Abaris is designed to repeat the same controlled security experiment against a known-vulnerable baseline and a candidate revision, compare the observations, and preserve reproducible evidence.

It does not promise that a system is completely secure. It demonstrates what was actually tested.

Application Security Threat Modeling Reproducible Evidence Fail-Closed Design Open Source Security

Change-safe billing infrastructure for multi-tenant SaaS systems.

Built around schema-first contracts, tenant isolation, idempotent operations, replay-safe webhooks, asynchronous orchestration, observability, and supply-chain security.

Multi-Tenancy Idempotency Replay Safety Async Processing PostgreSQL Prometheus Grafana

Production-oriented authentication API with session-backed authentication, refresh-token rotation, replay detection, rate limiting, observability, and performance validation.

Authentication Refresh-Token Rotation Replay Detection Rate Limiting Prometheus k6

• Backend architecture and distributed system boundaries
• API design, schema-first contracts, and integrations
• Idempotent operations, retries, replay safety, and asynchronous workflows
• Authentication, authorization, billing, and multi-tenant systems
• Application security and secure-by-default architecture
• Observability, CI/CD, testing, and production reliability
• Internal tooling, automation, and operational systems

• Correctness before convenience.
• Explicit contracts over hidden behavior.
• Reliability beyond the happy path.
• Secure defaults and least privilege.
• Observable and reversible operations.
• Small, reviewable, and maintainable changes.