JM

Freelance Application & AI Architect · Remote | EU/US

Application & AI Architect

Expert Generalist designing modern applications, breaking monoliths into microservices, and building AI-driven systems and agents. From solution & integration architecture to AI agents, agentic workflows, and MCP. Hands-on across the end-to-end delivery flow.

Solution Architecture Cloud & Kubernetes AI Agents & Agentic AI MCP servers & agents
Portrait of Jaroslav Meloun

Services

Application & Cloud Architecture

I design resilient, scalable systems, from splitting monoliths into microservices to event-driven integrations that hold up in production.

System DesignMicroservicesDistributed SystemsEvent-DrivenIntegrationAPIs & RESTOAuth 2.0KubernetesServerlessPostgreSQLMongoDBKotlin/JVM

AI Agents, Orchestration & MCP

I design and build AI agents and MCP servers that safely automate real work, with the orchestration, guardrails, and evals that keep them reliable in production.

AI AgentsAgentic AIMulti-Agent SystemsAgent OrchestrationTool UseFunction CallingMemory & StateRAGGuardrailsAI EvalsMCP ServersBackground Workflows

References

E-commerce platform · Microservices

Split a monolith into microservices and stabilized their integration, so the platform could scale with growing traffic.

Enterprise integration · API-first

Designed and integrated distributed systems with clear API contracts and governance, connecting legacy platforms with modern services.

Process

Step 1

Discovery

Clarify domains, constraints, SLAs, risks, and the smallest valuable slice.

Step 2

Architecture

Target state and migration plan with decision records, reference contracts, and safety/operability guardrails.

Step 3

Delivery

Guided build, AI prototyping and PoCs (agents, tool orchestration, CI/CD, observability), testing, and technical documentation, with handover playbooks and hands-on work where it accelerates the team.

How I engage

  • Architecture & AI assessments (2–4 week sprints)
  • Fractional architect (1–3 days/week; design-first, hands-on when needed)
  • Architecture reviews & second opinions
  • AI prototyping, agent/MCP pilots & PoCs (tool orchestration, LLM scaffolding)
  • Technical documentation & handover to engineering teams

Let’s talk

Based in Europe, collaborating across US/EU time zones. Remote-first, on-site for critical sessions.