Anton Griev

I help founders turn complex product, AI and data challenges into working systems — from the first architecture decision to production.

📍 Belgrade · Worldwide · EN / RU / SR

Let’s discuss your project Write to me · a question or a short brief is enough

How to work with meSix ways to work together, from a technical question to leading the buildTechnical partner: only 1 slot

Understand

A technical decision needs a second opinionArchitecture consultation

What happens: We work through your system, constraints and options: architecture, stack, integrations, scaling or an AI feature.
What you bring: One decision, a short description of the system and any diagrams or metrics you already have.
What you get: A clear recommendation, the tradeoffs behind it and the next steps to verify it.

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The product works, but delivery is getting harderTechnical review & modernization

What happens: I review the architecture and critical flows with your team, then trace the delivery, reliability, security and cost risks.
What you bring: Access to the relevant code and documentation, incident history and the team’s view of the bottlenecks.
What you get: Prioritized findings and a practical roadmap: what to fix, what to keep and how to check the result.

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Build

AI needs to fit a real workflowAI products & workflow automation

What happens: We choose one workflow and design its data access, model behavior, integrations and human review. Then build and test the agreed scope.
What you bring: A real task, examples of inputs and outputs, and the people who will use the result.
What you get: A working increment with acceptance criteria, explicit limits and visibility into quality and operating cost.

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Data needs to become a reliable platformData architecture & governance

What happens: I connect ingestion, streaming, DWH or lakehouse, analytics and access rules into one architecture that teams can implement.
What you bring: Your sources, analytical use cases, current infrastructure and security constraints.
What you get: Architecture decisions, data contracts, ownership boundaries and a delivery roadmap with acceptance criteria.

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Lead

You need a technical partner for the buildFractional CTO & engineering leadershipOnly 1 slot

Only 1 slot available.

What happens: I work alongside the founder and team on technical priorities, architecture, hiring, engineering standards and delivery decisions.
What you bring: The business goal, the team setup and an honest picture of what is slowing you down.
What you get: Clear technical ownership, an agreed delivery plan and regular review of real progress and risks.

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You want to test a product before a bigger betProduct engineering with Proof Engine

What happens: With Proof Engine, we connect the product question, a focused build and market feedback in one loop.
What you bring: The user problem, your riskiest assumption and the evidence you already have.
What you get: The smallest credible product or experiment, measured results and a decision on what to do next.

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Who am I

I’m a CTO, data architect and hands-on builder with more than 20 years of experience. I’ve led teams of 50+ across engineering, product, analytics, QA and DevOps, and worked on real-time data platforms, IoT and software products. Today, I’m a co-founder of Proof Engine and build Sales Blackbox. I use AI agents to move from a precise specification to working software, and stay responsible for architecture, review and acceptance.