Roman Z.

Systems Architect, Fractional CTO, DevOps, AWS Optimization

Top 1% Upwork expert full-stack software engineer, architect, and technology leader focused on software architecture, AWS, Node.js, Python, database design/optimization, CI/CD, and DevOps. I use modern AI Agentic tools to build MVPs or full scale apps in a short timeframe. Agentic tools: Claude Code, OpenClaw, N8N Programming: TypeScript/JavaScript, Python, Node.js, Shell Frameworks: Nest.js, React, Express, Django Databases: PostgreSQL, MySQL, DynamoDB, Timestream, MongoDB AWS: Lambda, API Gateway, ECS, RDS, SQS, SNS, S3, EC2, Route53, Redshift, CloudWatch, Serverless, etc. DevOps: CloudFormation, SAM, Terraform, CodePipeline, GitHub Actions, CI/CD AI/Automation: n8n orchestration; OpenAI/Anthropic tool calling; optional RAG/pgvector when needed; guardrails/observability Containers: Docker, Docker Compose, ECS, Kubernetes Blockchain: Ethereum, Algorand, DeFi, Hyperledger Indy/Aries, Self-Sovereign Identity Analytics/BI: Qlik, Tableau, Fine BI, Power BI Other: Software Architecture, Stripe payments, Stock/options trading Highly proficient in FinTech, DeFi, and financial services. Open to: Fractional CTO, Technical Advisor, Project Rescue