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AJ.

Hello, I’m Anton

Backend engineer.
Curious builder.

I build and operate backend systems, and I’m exploring how the same engineering discipline applies to AI software.

From the notebook

Featured writing

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01Planned article

Structured Outputs Are Not Correct Outputs

Why valid JSON is only the start, and where deterministic business rules belong in an AI workflow.

AI EngineeringCorrectness
02Planned article

When an AI Agent Calls the Same Tool Twice

A backend engineer's look at idempotency, retries, and duplicate side effects in agentic systems.

Backend EngineeringReliability
03Planned article

From JUnit to LLM Evaluations

How familiar testing instincts can shape practical, repeatable evaluation for AI applications.

TestingAI Engineering

Things I’m building

Selected projects

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In development

RoleFocus

AI-assisted job discovery and résumé matching, built as a practical exploration of applied AI.

Engineering focus

Explores a FastAPI boundary for job discovery, résumé data, and AI-assisted matching.

PythonFastAPINext.js
Experiment

The Trader

An experiment in AI-assisted trading signals using Jev AI by Typesafe.

Engineering focus

Separates deterministic market indicators from the experimental AI-assisted signal layer.

PythonJev AITrading
Planned

ResolveKit

A planned support backend exploring correctness, idempotency, guardrails, and evaluations for AI systems.

Engineering focus

Planned around deterministic policy validation and idempotent tool execution before AI guardrails and evaluations.

JavaSpring BootAI

Away from the keyboard

Pickleball, cameras, and whatever I’m learning next.

I’m learning videography and content creation, and I play pickleball whenever I can.

More about me