21.09.2026 aktualisiert

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100 % verfügbar

Senior Full Stack & Infrastructure Engineer

Plankstadt, Deutschland
Nur Remote
Bachelor of Science in Computer Science
Plankstadt, Deutschland
Nur Remote
Bachelor of Science in Computer Science

Profilanlagen

alexander_kirilyuk_cv (2).pdf

Über mich

I am a passionate engineer with more than 10 years of experience developing highly scalable software systems using microservice architecture and Rust, TypeScript, and Go as my programming languages. I have experience in the full dev stack, including frontend, backend, and infra.

Skills

GitOpsCloud-EngineeringContinuous IntegrationDevOpsNode.jsNext.jsTypeScriptWebRTCRust (Programming Language)React.jsBackendKubernetesFront EndGolangMicroservices
Kubernetes & Cloud Infrastructure
Expertise in Kubernetes (K8s) orchestration, Docker, Terraform, Helm, Google Cloud Platform (GCP), and Azure for architecting highly available, vendor-agnostic systems with automated failover and 99.999% uptime.

TypeScript & Node.js Development
Expert-level proficiency in TypeScript and Node.js for building high-performance backend services, API frameworks, and full-stack applications, including legacy modernization and microservice architectures.

Real-Time & WebRTC Engineering
Deep experience with WebRTC, WebSockets, SIP/RTP, and HRTF audio mixing for real-time communication platforms, including authoring an open-source high-performance Node.js WebRTC library backed by a native Rust media engine.

Rust for High-Performance Systems
Proficiency in Rust for building high-performance system components, including a native media engine, HRTF audio mixing engine, and hybrid Rust/TypeScript backend architectures.

CI/CD & Observability
Implementation of automated CI/CD pipelines using GitHub CI, Jenkins, and Teamcity, combined with advanced telemetry stacks using Prometheus, Grafana, and Kibana to reduce Mean Time to Detection by 35%.

Databases & Message Queues
Hands-on experience with MongoDB, PostgreSQL, Redis, Elasticsearch, RabbitMQ, and BullMQ for distributed job processing, resilient state management, and high-performance data retrieval.

Frontend & Framework Development
Building unified platform UIs and robust API management layers using Next.js, React, and React Native, including seamless application deployment pipelines for developers.

Testing & Quality Assurance
Automated E2E smoke testing and voice testing using Playwright, Jest, Mocha, Sinon, and custom E2E voice testing frameworks to enforce platform stability and reliability.

AI & Model Context Protocol (MCP)
Development of AI game platforms utilizing AI Agents and Model Context Protocol (MCP) servers, as well as leveraging advanced AI development workflows such as Cursor Agent to accelerate codebase architecture.

Erfahrung

Berufserfahrungmehr als 10 Jahre
Freelancer seit2025

Sprachen

DeutschMutterspracheEnglischverhandlungssicherRussischMuttersprache

Projekthistorie

Founder, CEO & CTO

Voicethere (voicethere.io)
Authored and maintained node-webrtc-rust, an open-source high-performance Node.js WebRTC library backed by a native Rust media engine. Architected and built Voicethere, a specialized SaaS hosting platform for real-time communication and data sharing. Developed cluster scalers in Go, built the unified platform UI with Next.js, and enforced platform stability via automated E2E smoke tests. Tech Stack: Rust, Go, Kubernetes, Helm, Prometheus, Grafana, WebRTC, Next.js, Supabase, Vitest, Playwright, GitHub CI, TypeScript, Node.js.

Senior Full Stack & Infrastructure Engineer

A Kirilyuk LLC
Architected vendor-agnostic, high-availability systems for global clients with automated failover and 24/7 resilience protocols. Developed advanced telemetry stacks using Prometheus and Grafana, reducing MTTD by 35%. Tech Stack: Node.js, TypeScript, Kubernetes, Terraform, Prometheus, Grafana, GCP.

Senior Full Stack & Infrastructure Engineer

Create Worlds
Developed a web-based AI game development platform using AI Agents and MCP servers. Engineered headless Wonderland Engine instances for server-side rendering controlled via custom MCP servers. Designed a Kubernetes reverse proxy for server-side rendered frames with less than 100ms latency. Deployed and managed the whole platform on multiple bare metal Kubernetes clusters. Tech Stack: TypeScript, Next.js, React, MCP, Kubernetes, NGINX, Docker, Git.

Senior Fullstack & Infrastructure Engineer

Wonderland
Solo-developed an authoritative client/server multiplayer framework with network synchronization and movement interpolation. Authored a custom HRTF audio mixing engine in Rust with automated CPU-threshold failover. Engineered a hybrid Rust/TypeScript backend and developed a Node.js-based CLI with Live Remote Debugging. Tech Stack: Rust, TypeScript, Node.js, WebRTC, Next.js, React, WebSockets, Kubernetes, Docker, Terraform, Helm.

Technical Lead / Senior Software Engineer

Cognigy GmbH
Migrated a CPaaS VoIP portal to Kubernetes managing 20,000+ open SIP ports and developed an E2E voice testing suite. Implemented high-performance server-side search for Cognigy Flow and resolved critical database and RPC bottlenecks. Improved MongoDB retrieval speeds via refined model indexing. Tech Stack: TypeScript, MongoDB, RabbitMQ, Redis, Azure DevOps, Mocha, Sinon, Prometheus, Kibana.

Technical Lead / Senior Software Development Engineer

LivePerson Germany GmbH
Architected a modular, high-scale Node.js proxy layer integrating external AI providers using BullMQ and Redis. Maintained 99.999% uptime for 200,000 daily conversations. Led legacy modernization of the accountinfo microservice and contributed to API-Core. Led migration of 8 Elasticsearch clusters (v1.6 to v4.3) and containerized legacy applications for Kubernetes deployment. Tech Stack: Node.js, TypeScript, JavaScript, Kubernetes, Redis, BullMQ, Elasticsearch, Jest, Teamcity, Jenkins, Grafana, Logz.io.

Portfolio


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