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About Me I've been building software professionally since 2011—across enterprises, small elite engineering teams, and early-stage startups. Over the years, my work has spanned telecom systems, government infrastructure, cloud platforms, and now Bitcoin Layer-2 protocols. That breadth shaped the way I build: with a mix of pragmatism, reliability, and a strong systems-thinking mindset. Engineering Identity For the past 7 years, my primary language has been Go, with a focus on clean, maintainable backend systems that follow hexagonal architecture, DDD principles, and clear separation of domains, ports, and adapters. Every service I write is built with observability and profiling baked in from day one—OpenTelemetry, Prometheus, Loki, Jaeger, Pyroscope, the whole stack. Before Go, I spent 7 years in enterprise Java ecosystems, which taught me discipline, modularity, and how to design systems that survive huge teams and long lifecycles. Today, I still read and translate code across Python, C++, Java, PHP, and Rust, which gives me a strong sense of trade-offs between ecosystems and implementation styles. Bitcoin Focus (2020 → Present) Since 2020, my work has been centered on Bitcoin infrastructure, wallet systems, and Layer-2 protocol development. I'm interested in Bitcoin at the infrastructure and protocol level—not smart contracts or apps built on top of someone else's chain, but the actual engine: multi-sig wallets, key management, Taproot, multi-party protocols, and trust-minimized designs. Been contributing to many open source projects in this area but most important are Ark and Tdex. I enjoy working on hard problems that require both cryptographic thinking and pragmatic engineering. Infrastructure Mindset Although I'm a backend engineer, I've always owned the full lifecycle of the systems I build: AWS architecture (VPCs, RDS, ElastiCache, VPC Endpoints, ECS, Lambda), Infrastructure as Code (Terraform/OpenTofu, CloudFormation), Zero-SSH environments with SSM, production observability pipelines, security, encryption, and key management flows, CI/CD, deployment automation, and reliability engineering. I'm not the kind of engineer who writes code and throws it over the wall. I design the runtime environment, the network, the monitoring, the failure modes, the dashboards, the alerts, the profiling stack, and the mechanisms that keep a system alive at 3 AM. AI-Agentic Systems My newest area of focus is AI-powered developer tooling. I've been designing multi-agent systems that understand a codebase, reason about it, and assist in development workflows. These systems combine semantic project routing, specialized agents, automated context loading, and CLI plugins and orchestrators. AI is now becoming a force multiplier for engineering—and I'm building the tools I wish I had ten years ago.

Kirill Gorelyi, Java Developer Summary * Accomplished software engineer with 6+ years of industry experience * Solid background in systems architecture, database design, and infrastructure administration * Excellent command of JVM programming stack, including Spring and Play Frameworks * Knowledgeable in both SQL and NoSQL technologies * Comfortable working in a distributed international team