Andrew Leonenko · Agentic AI & Platform Engineer
Open to work · Remote / Hybrid
Hi, I'm Andrew Leonenko · New York, NY

Principal AI &
Platform Engineer.

I design, build, and scale enterprise SaaS, from agentic AI and API platforms to Azure architecture and Microsoft 365. A decade of turning messy, regulated problems into secure systems that ship.

See selected work → Let's talk Résumé ↓
↗ github ↗ linkedin ↗ leetcode andrew@leonenko.me
currently building
agentic AI @ scale
core stack // Agentic AI / LLMs Azure OpenAI React / React Native TypeScript Node.js Python SharePoint / SPFx Microsoft 365 REST APIs
Applied AI

I build the system around the model.

Not model training or research. The engineering that makes AI useful in production: MCP servers, model configuration, retrieval, and agent orchestration. The model is maybe 20% of the job; the system around it is the other 80%. That's the 80% I do.

01
Context & data
02
MCP tools
03
Orchestration
04
Eval & guardrails
05
Ship
MCP & tool generation

Turn your APIs into agent tools

I generate and ship Model Context Protocol servers that expose existing systems as safe, typed tools, like the IMS MCP I built to bring AI tooling to parity with a core insurance platform's API surface.

Model configuration & routing

The right model for each task

Multi-provider setups across Claude, OpenAI, Gemini, and local Ollama, with fallback chains and per-task selection tuned for cost, latency, and reliability instead of one model for everything.

Agentic workflow solutioning

Agents that plan, act & recover

Designing multi-step agent workflows: planning, tool calls, and orchestration, with the guardrails and observability that make them dependable in production. The thinking behind FleetRun.

RAG & document intelligence

Grounded answers, real context

Retrieval, vector memory, and document intelligence embedded where teams already work, from in-browser vector memory to NLP chatbots and Microsoft 365 document automation.

Under the hood

I build and run my own agentic infrastructure.

Eleven custom Model Context Protocol servers give my agents typed, governed access to the tools a real software business runs on. The models run on hardware I own and route per task, so cost and latency stay under control.

11
custom MCP servers
GX10 · 3080 · 5070
self-hosted GPU inference
4+
model providers, routed per task
100%
infra I own and operate
~/.claude/mcp-servers
stripe
vercel
neon
postmark
twitter
reddit
reddit-ads
buffer
expo
unraid
scorebooker-db
+ github, nas
routing: Claude · OpenAI · Gemini · local Ollama

Selected work.

SaaS shipped solo · Leonenko Group

Experience.

2014 → now · enterprise SaaS across healthcare, finance, legal & insurtech

Dec 2025 – Now

Balance Partners

current
Principal AI & Platform Engineer  ·  previously Senior Agentic AI / Platform Engineer
InsurTech · Remote

Building agentic AI and the API platform behind a modern insurance stack, including IMS MCP servers that bring AI tooling to parity with the core platform's APIs.

Azure OpenAILLMsMCPAPIs
Feb 2026 – Now

Leonenko Group

founder
Founding President · Self-employed
New York · Remote

My product studio. A solo founder shipping AI-powered tools for teachers, faith communities, and beyond: TeachStack, FaithWise, FleetRun, and DreamTide.

May 2025 – Now

Scorebooker LLC · SportTech

CTO & Founding Member
Suffolk County, NY · Remote

Leading engineering and technology strategy as co-founder.

Sep – Dec 2025

Infodash · LegalTech

Senior Platform Engineer · previously M365 Consultant
Remote

Azure and Power Automate platform work, plus Microsoft 365 / SharePoint consulting.

2020 – 2025

Altera Digital Health · HealthTech

Software Engineer · SPFx · Contract
Melville, NY · Hybrid · 5 yrs 6 mos

Modernized legacy healthcare systems into microservices, improving uptime and deployment speed by ~40%. Built SPFx solutions across Azure and REST APIs.

2014 – 2020

CampSite · Camp Management SaaS

Full Stack Engineer · previously Web Application Developer
Portland, OR · Hybrid · 6 yrs

Where it started: full-stack product engineering on PHP & SQL for a camp management platform.

About.

Senior software engineer, AI specialist, and Microsoft 365 consultant with 10+ years designing, building, and scaling enterprise SaaS across healthcare, finance, and legal tech.

I specialize in full-stack development (React, Node.js), cloud architecture on Azure, and custom SharePoint SaaS for the legal industry, streamlining case management, document automation, and compliance.

I'm passionate about applied AI, from NLP-driven chatbots to AI-powered document intelligence inside Microsoft 365. Alongside delivery, I love mentoring engineers and turning complex regulatory requirements into secure, scalable systems.

Andrew outdoors with his son
outside the terminal
10+
years shipping
40%
faster deploys @ Altera
2.1k
commits / yr on GitHub
6
products shipped solo
What I do
Agentic AI & LLM platforms, from MCP servers to production agents
Full-stack product (React / React Native / Node.js)
Azure cloud architecture & microservice modernization
Microsoft 365 / SharePoint SaaS for regulated industries

What people say.

colleagues & leaders I've worked with

Andrew is a talented developer with strong proficiency in client-side development. He showed great initiative diving into AI-based coding, quickly grasping complex concepts and applying them effectively. A dedicated and skilled engineer who would be a valuable addition to any team.

KP
Kushan Perera
Web Services, Northwell Health

Andrew pairs deep technical range with a rare ability to translate messy business requirements into clean, shippable solutions. He's pragmatic, fast, and genuinely a pleasure to work alongside. He is the kind of engineer who makes the whole team better.

BS
Brett Soskil
Web Services, Northwell Health

I worked alongside Andrew at CampSite, where he consistently shipped high-quality full-stack work and raised the bar for the product. He combines strong engineering instincts with real ownership. Exactly the kind of builder you want on a team scaling a SaaS platform.

MC
Matthew Cavagnaro
Sr. Technical Program Manager, AWS · ex-CampSite

Andrew brings real depth in AI and platform engineering to Balance Partners. He moves fast, thinks in systems, and turns ambitious ideas into reliable software. A genuine asset to any technical organization.

SA
Scott Aitchison
VP, Enterprise Technical Operations · Balance Partners
Available for new roles & collaborations

Let's build something that ships.

Hiring, partnering, or just want to talk agentic AI and platforms? My inbox is open.

Andrew Leonenko
© 2026 Andrew Leonenko · Leonenko Group LLC New York, NY · a.leonenko.me