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Adam Horvath

Senior full-stack engineer

Software engineer with a background in psychology. I like building software and AI that work with and for people, not around them.

now

Building Fieldwork. Open to full-stack and AI engineering roles.

01 / Selected work

Interview prep that can't invent your experience

resume eval cases passed, 3.8 s median on local qwen3:8b
8 / 8
job import cases passed, including prompt injection
7 / 8

as of nov 2026

Fieldwork applications view: a job list with fit coverage and requirement-by-requirement evidence

Import a resume into an experience bank you confirm line by line, check each job description against it requirement by requirement, and turn the gaps into a reviewed preparation plan.

  • Next.js
  • TypeScript
  • OpenAI Agents SDK
  • Ollama
  • Supabase RLS
  • Zod

A RAG assistant that shows its evidence and grades itself

answers graded correct by a GPT-5 judge, up from 12 / 17 after one prompt change
17 / 17
answers fully grounded in the retrieved passages
15 / 17

as of nov 2026

Handbook RAG eval results page: headline metric tiles for a judged run, compared with the run before it

Answers questions about a fictional company's HR handbook from retrieved passages only, links every citation to the exact passage, and scores retrieval and answers separately so a wrong answer can be traced to the stage that failed.

  • Python
  • FastAPI
  • OpenAI embeddings
  • Claude / GPT
  • LLM-as-judge
  • Vercel

published · OpenAI Cookbook · Jun 2026

SchemaFlow: agentic database change impact analysis, SQL generation and eval guardrails (opens in a new tab)

Co-author: built it as a Jupyter notebook and implemented the Promptfoo evals

Turns a plain-language database change request into structured JSON, a rollout plan with prechecks and rollback, and SQL across data layers, then checks it with deterministic guardrails and optional Promptfoo evals.

  • OpenAI Agents SDK
  • File Search
  • Promptfoo
  • SQL

02 / About

I studied psychology at Masaryk University in Brno, then spent a few years working as a therapist in the US. Later, while working as a bartender in Las Vegas, I found my way into QA, learned to program at a bootcamp, and eventually started writing production code.

Over the past seven years, I've built full-stack applications and backend systems across aviation, gaming payments, and enterprise commerce. More recently, I've built production AI agents for enterprise clients. I care about software that works beyond the demo: thoughtful design, reliable systems, solid testing, and human oversight where it matters.

03 / Experience

  1. 2024 — 2026

    Senior Software Engineer · Altimetrik

    Built production AI agents on the Sierra platform for enterprise clients, including an incident-response agent that triages reports and opens Salesforce cases. Refining it with real interaction data raised meaningful submissions by about 20%.

    • TypeScript
    • Sierra
    • LLM agents
    • Salesforce
  2. 2021 — 2024

    Senior Software Engineer · Fabric

    Built serverless payment and reconciliation APIs on AWS, led a Vue to React and Redux migration, and set up a Cypress suite covering hundreds of user scenarios. Promoted from Software Engineer in 2023.

    • Node.js
    • AWS Lambda
    • React
    • MongoDB
    • Cypress
  3. 2020 — 2021

    Full-stack Software Engineer · Marker Trax

    Built Node.js and Lambda APIs for payment, customer and gaming data, integrated payment and credit-check services, and shipped Angular and Ionic apps.

    • TypeScript
    • Express
    • Angular
    • Ionic
  4. 2019 — 2020

    Full-stack Software Engineer · Allegiant Air

    Built customer-facing React apps and Java Spring Boot APIs for passenger and accounting systems.

    • React
    • Redux-Saga
    • Spring Boot
    • MySQL
  • OpenAI Hackathon: an AI-assisted engineering workflow across Slack, GitHub and enterprise data
  • Certified: OpenAI Technical Practitioner, Codex Deployment Practitioner, Claude with the Anthropic API

04 / Contact

Let’s talk about what you’re building.

Message me on LinkedIn

built with next.js and tailwind css