# Dmitri Leroy

> AI Software Engineer | Agentic AI, LLM Infrastructure, Distributed Systems

Location: New York, New York, United States
Profile: https://flows.cv/dmitrileroy

I’m an AI Software Engineer with a strong focus on agentic AI systems, LLM infrastructure, and scalable backend architecture.

I build production-grade AI platforms that combine LLMs, autonomous agents, retrieval-augmented generation (RAG), and document intelligence. My work spans architecture, implementation, deployment, and optimization of AI systems operating under real-world traffic.

Technical expertise includes:

- Agentic AI systems (tool use, planning, orchestration, multi-step reasoning)
- Transformer-based LLMs (Hugging Face Transformers, BERT, LLaMA-family models)
- PyTorch-based inference and LoRA fine-tuning workflows
- GPU-backed inference and optimization (CUDA awareness, vLLM, batching, concurrency)
- Retrieval-Augmented Generation (RAG) and semantic search
- Distributed systems and backend architecture (stateless services, async APIs)
- High-throughput APIs with FastAPI and Node.js
- Redis-backed architectures (streams, queues, caching, session orchestration)
- Vector databases and embedding pipelines (Milvus, Pinecone, FAISS)
- SQL and relational databases for backend systems and AI applications
- Monitoring and observability with Prometheus (metrics, health checks, capacity tracking)
- Cloud platforms: AWS and Google Cloud

I design systems with an emphasis on scalability, fault tolerance, observability, and cost efficiency, ensuring AI components are explainable, measurable, and maintainable in production.

## Work Experience
### Senior Software Engineer @ E-Ring, Inc.
Jan 2023 – Present
Focused on building and operating scalable, distributed AI-driven systems with an emphasis on LLM-based applications, agentic workflows, and backend architecture.
Work includes designing high-throughput services, integrating large language models, and supporting production deployments in controlled environments.

### Senior Software Engineer @ Quest
Jan 2022 – Jan 2023 | New York City Metropolitan Area
Worked on a design-to-code platform spanning backend services, frontend integration, and AI-powered workflows. The role involved building API-driven pipelines that transformed structured outputs from design tools into application code, integrating LLM-based services to support dynamic behavior, and contributing to data ingestion pipelines used for training machine-learning models. Collaborated across product and engineering to deliver scalable, production-ready systems that bridged design, code generation, and AI.

### D3Reactor | Full Stack Software Engineer @ Open Source
Jan 2021 – Jan 2022 | New York City Metropolitan Area
• Utilized D3 scaling functionality for mapping a dimension of abstract data to a visual representation and shape generator functionality to interpret data and build geometric shapes in form of svg elements.
• Optimized performance of React components and enabled fast and responsive UI by creating memoized High Order Components with memo API and preserving referential equality of props values with React memoization hooks to avoid unnecessary rerenders
• Automated CI/CD pipeline by configuring GitHub Actions workflow to automatically run tests to speed up integration of code changes from multiple contributors and workflow to build and release npm module to npm registry

### Cohort Connect | Full Stack Software Engineer @ Open Source
Jan 2021 – Jan 2021 | New York City Metropolitan Area
• Built complex user interface in React as a collection of reusable components to easily maintain and uniformize the codebase
• Utilized D3.js as a data visualization solution to integrate Newton's equations of motion in space-optimized Force-directed graph layout featuring drag, zoom, and on hover tooltip functionality
• Employed Jest framework for unit testing and to run functional and integration tests leveraging DOM/React Testing Library custom matchers and rendering to the DOM functionality to evaluate DOM nodes and UI, as well as user-event API

### Travel Journal | Full Stack Software Engineer @ Open Source
Jan 2020 – Jan 2021 | New York City Metropolitan Area
Built an app to track and manage past and upcoming trips

• Incorporated React Hooks and Context API to create application-wide state and reduce inefficient & redundant prop
drilling in order to handle the complex state management required and establish a unidirectional data flow
• Utilized Mapbox Webservices API and Geocoding API to visualize data and increase user engagement
• Implemented JWT authentication and Google OAuth using Passport.js as Express server authentication middleware
• Structured a RESTful API using several pieces of Express middleware to more declaratively respond to HTTP requests
• Utilized Cypress testing framework to write automated tests for API

### Frontend Developer @ LanceSoft, Inc.
Jan 2019 – Jan 2022 | New York City Metropolitan Area
• Developed a full stack secure application for a client to keep a track of current and past employment records and manage recruitment/employment process
• Leveraged React to architect a web application comprising reusable, stateful components, capitalizing on the library's reconciliation process for more efficient and optimized DOM updates, resulting in a highly responsive and dynamic user interface
• Implemented React Router in a web application to manage and optimize navigation, ensuring seamless user experiences with dynamic routing and efficient loading of component-based pages
• Architected Node.js server leveraging it’s asynchronous, non-blocking, event driven architecture to concurrently handle computations required to process multiple requests and to intelligently use system resources by offloading time consuming database query tasks to limited size worker pool of kernel threads and executing listeners on task completion with single-threaded event loop


## Education
### Political Science and Government
Petro Mohyla Black Sea National University


## Contact & Social
- LinkedIn: https://linkedin.com/in/dmitri-leroy

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Source: https://flows.cv/dmitrileroy
JSON Resume: https://flows.cv/dmitrileroy/resume.json
Last updated: 2026-04-01