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Hi, I'm Tryfonas.
I build
that solve real problems

Computer Science graduate building enterprise-grade AI solutions - from RAG systems to intelligent chatbots. With 6+ years of corporate experience, I understand the real problems that AI is best positioned to solve.

See What I've Built →About Me
rag_pipeline.py
#
RAG Pipeline
Live Demo
Built with AI
Cursor + Claude
0+
years in enterprise
Accenture · Infosys · HEINEKEN
0
multinationals
across Finance and Operations
0+
AI certifications
Cisco · Accenture
0
AI projects
1 live · 3 in progress
About Me

The Short Version

I'm a Computer Science graduate from Greece, currently based in Kraków, Poland. My passion is Artificial Intelligence - specifically building practical AI tools that solve real business problems.

I spent 6+ years working at major multinationals like Accenture, Infosys, and HEINEKEN, where I gained deep understanding of how large enterprises operate - the processes, the pain points, and the communication dynamics that make or break projects.

That corporate experience gave me something most AI builders don't have: I know what the actual problems look like from the inside. Now I'm combining that real-world understanding with hands-on AI development - building RAG systems, chatbots, and automation tools inspired by the problems I've seen firsthand.

Tryfonas Papantoniou
Experience

Six Years Inside Big Enterprise

Before building AI tools, I spent six years inside three multinationals - watching how large organizations actually operate. That context is the difference between AI that looks good in a demo and AI that survives a production rollout.

  1. Accenture

    Nov 2025 - Present
    Change Management · TechKraków, Poland

    Moved into tech-focused change management - guiding how enterprise teams adopt new systems and ways of working. The bridge between six years of operational experience and the AI tools I'm now building.

  2. Accenture

    Aug 2022 - Nov 2025
    Senior C&C Specialist · SME · PharmaceuticalKraków, Poland

    Subject-matter expert on a pharmaceutical client's credit & collections operation - $50M+ recovered across 250+ clients. Three consecutive Excellence Awards (2023, 2024, 2025). The day-to-day that exposed every inefficiency an LLM could solve.

  3. Infosys

    Nov 2021 - Jul 2022
    C&C Process Specialist · Shipping & MaritimeKraków, Poland

    Credit & collections for a global shipping and maritime client. Wrote the SOP documentation that powered the transition of operations from Greece to Poland - my first real taste of large-scale process design.

  4. HEINEKEN HGSS

    Feb 2020 - Oct 2021
    Junior C&C Specialist · FMCGKraków, Poland

    Managed a 240+ customer portfolio in order-to-cash for one of the world's largest brewers. First corporate role after university - where I learned how Finance and Operations actually run inside a multinational.

Projects

What I've Built

This site itself plus three live AI tools, each demonstrating a different aspect of modern AI engineering: retrieval-augmented generation, schema-validated tool use, and agentic orchestration over analytical functions.

Each tool below is inspired by a real inefficiency I encountered during my 6+ years in enterprise Finance and Operations - manual processes, slow decisions, and inconsistent data handling that are exactly the kind of problems AI is well suited to solve.
Next.js 16React 19Canvas
● Live

tryfonas.dev - This Site

Portfolio built through AI-assisted development - custom canvas starfield, scroll-linked aurora, responsive layout, deployed on Vercel with GitHub CI.

Read the build log →
tryfonas.dev
Hi, I'm Tryfonas.
I build AI tools that solve real problems
LLMRAGAnthropic API
Live

O2C Policy Assistant

RAG-powered chatbot for Order-to-Cash policy questions - invoicing, collections, and dispute resolution - with source citations.

Progress100%
Shipped · Apr 2026Try it
What's the credit limit policy?
Limits are based on payment history and revenue per §3.2.
Credit Risk Policy
ReconciliationTool UseAnthropic API
Live

Reconciliation Copilot

Reconciles a custodian feed against an internal book of record. Rule-based code identifies the breaks; Claude explains each one in plain English with auditable citations.

Progress100%
Shipped · May 2026Try it
Breaks identified4 · trade date 04/15
NVDAPrice
MSFTQuantity
TSLAMissing
Agentic AITool UseAnthropic API
Live

AR Insights Dashboard

Ask plain-English questions about a synthetic accounts receivable portfolio. Claude orchestrates a sequence of vetted analytical functions and answers with cited data and inline charts.

Progress100%
Shipped · May 2026Try it
AR Overview
$2.4M↑ 12%
✦3 accounts flagged at risk of late payment
Technical Skills

What I Work With

A growing AI toolkit backed by a Computer Science degree and hands-on project experience.

Large Language Models

Building applications with LLMs - prompt engineering, system design, and API integrations.

Claude APIPrompt EngineeringSystem Prompts

RAG & Vector Search

Building retrieval-augmented generation pipelines - embedding documents, vector storage, and context-aware retrieval.

PineconeEmbeddingsVector Search

Agentic AI

Designing AI agents that can reason, use tools, and execute multi-step workflows autonomously.

Tool UseMulti-step ReasoningWorkflow Automation

Web Development

Building and deploying web applications using modern frameworks and hosting platforms.

Next.jsReactTailwind CSSVercel

AI-Assisted Development

Using AI as a development partner - turning ideas into working software through AI collaboration.

CursorClaudeAI Pair Programming
Credentials

Education, Trainings & Certifications

Formal education in Computer Science, complemented by targeted AI certifications from industry leaders.

Education

BSc Computer Science

University of Macedonia, Thessaloniki, Greece

Erasmus+ - Business Administration

BA School of Business & Finance, Riga, Latvia

AI Trainings & Certifications

AI Technical Practitioner (AITECH)

Cisco - 2026

AI Business Practitioner (AIBIZ)

Cisco - 2026

Reinvention with Agentic AI

Accenture - 2026

CS50 ReadyPlayer50

Harvard University - 2023

Contact

Let's Connect

Looking for my next role in AI - building tools, implementing solutions, and bridging the gap between technology and business. Let's talk.

EmailLinkedInGitHub