Anatolii – AWS, React, Typescript

AI-powered cybersecurity & compliance platform.

• Led backend and AI architecture on a four-engineer team.
• Built a Temporal-orchestrated network of six specialized AI agents communicating over the A2A protocol with crash-safe saga compensation.
• Designed the long-document redlining pipeline that reviewed contract ranges in parallel with LangGraph and merged them back as native Word tracked changes.
• Built horizontally scaled LLM streaming with resumable streams for 5,000 concurrent streams and p99 under 20ms.
• Built the retrieval and evaluation layer with pgvector search, Neo4j knowledge graph, schema-validated function calling, output guardrails, and Langfuse LLM-as-judge evaluations.
• Built a provider-agnostic LLM gateway across OpenAI, Anthropic, AWS Bedrock, and Google Vertex AI.
• Built a .NET / OpenXML microservice for native Word and Excel reading and writing with tracked changes.
• Implemented multi-cloud infrastructure as code across AWS and Azure with EKS / AKS, ECS, WAF / GuardDuty, and per-customer BYOC isolation.
• Owned code review and mentoring across backend and frontend.
• Implemented LLM observability with Langfuse and OpenTelemetry.

US- and EU-market software consultancy.

• Delivered full-stack solutions from concept to ship across client engagements.
• Owned R&D, estimation, and tech-stack selection.
• Shipped vtnews.ai, a large-scale news aggregator serving 50,000+ users per day at launch.
• Shipped letsgain.com, a teaching-materials platform used by 30 schools and 300 teachers.

A large-scale news aggregator for a general consumer audience, collecting, processing and serving news at high volume. It reached 50,000+ users per day at launch.

• Shipped the product from concept to launch, delivering both the backend and the web application.
• Scaled the service to 50,000+ users per day at launch.
• Owned R&D, estimation and tech-stack selection for the engagement.

A global humanitarian organization with 20,000+ staff across 120+ countries.

• Built the data-collection and processing flows behind the dashboards, ingesting from multiple internal WFP source systems.
• Built PDF and Excel report-generation pipelines producing about 1,000 reports per week.
• Integrated authentication via Azure AD and AWS Cognito.
• Built analytics dashboards for 20,000 staff across 120+ countries with stakeholders in Rome and London.
• Led the React 16 to 18 migration on a Webpack 5 build across 500+ components, 15+ screens, and about 200k lines of code.