Antonis Katsonis

Business Analyst. Developer. AI-powered.

I notice the gaps others walk past, then write the code that closes them: tools and AI agents at Suitsupply, and my own products on the side.

Trusted by

Worked with great teams.

About Me

A short introduction.

Antonis Katsonis

Amsterdam, NL

Junior Business Analyst

eCommerce Operations & Automation at Suitsupply

I work in Suitsupply's eCommerce operations team: APIs and JSON, Manhattan Active Omni configuration, and the stories engineering builds from. I also code the tools we were missing, from a read-only control tower to an MCP server for AI agents, in TypeScript on Next.js, Supabase, and Cloudflare Workers, and build my own products on the side. Before this: chargeback defense, customer operations, and marketing.

€100K+Disputes won

5,000+Orders repaired

10+Tools shipped

Experience

Amsterdam, NL · Jun 2026 – Present

Junior Business Analyst - Suitsupply

Requirements, analysis, and internal tooling for the eCommerce operations team on Manhattan Active Omni.

Write the user stories engineering builds from, from ops problem to spec.
Configure Manhattan Active Omni and run API repair flows: ~100 classified flows that fixed 5,000+ orders.
Built the Control Tower: a read-only gateway over MAO for order dossiers, triage, and config drift checks.
Built Omniscope, an MCP server on Cloudflare Workers so AI agents can investigate stuck orders safely.
Mapped Atlas, a dependency graph of 69 components and ~2,300 configuration entities.

Amsterdam, NL · Oct 2025 – May 2026

Customer Service Specialist - Suitsupply

Global customer operations across chat, email, and phone in Salesforce.

Led chargeback defense, recovering €100K+ in disputed payments.
Handled returns, payments, VAT invoices, and logistics cases end to end.
Worked with stores and warehouses on order issues to keep SLA and CSAT on target.

Barcelona, ES · Apr 2025 – Sep 2025

Fashion Advisor / Customer Service Consultant - Concentrix

Email and chat support for Zara Home customers.

Resolved returns, product questions, stock checks, and complaints.
Kept CSAT high through product knowledge and clear communication.

Cyprus · Sep 2024 – Mar 2025

Marketing Officer - Unicaf

International campaign execution for an online university.

Ran campaigns across multiple African markets.
Standardised UTM tracking and optimised landing pages for attribution.
Delivered email and CRM workflows in Brevo and Elastic Email; built the marketing wiki in Notion.

Ireland · Apr 2024 – Aug 2024

Customer Service Operations Specialist - TELUS International

Payment operations support for Stripe users.

Handled transactions, refunds, disputes, and account investigations under strict SLAs.
Translated technical issues into clear customer guidance.

Amsterdam, NL

Guest Experience - Andaz Prinsengracht

Front desk and guest relations in a five-star hotel.

Check-ins, VIP care, and guest concerns under pressure.

Southampton, UK · Jan 2022 – Dec 2023

Marketing Assistant - Home/Grown SO14

Digital presence and events for a social impact organisation.

Managed website and social content; contributed to SEO and research.

Education

Southampton, UK

BSc Business Management - University of Southampton

Focus on marketing, leadership, and innovation; developed strong analytical and strategic skills.

Cyprus

High School Diploma - Aradippou Lyceum

Specialised in Marketing, Physics, and Computer Applications with distinction.

Experience

Suitsupply

Omnichannel menswear retail

Jun 2026 – Present

Position: Junior Business Analyst
Location: Amsterdam, NL
Industry: Fashion retail

Requirements, analysis, and internal tooling for the eCommerce operations team on Manhattan Active Omni.

Write the user stories engineering builds from, from ops problem to spec.
Configure Manhattan Active Omni and run API repair flows: ~100 classified flows that fixed 5,000+ orders.
Built the Control Tower: a read-only gateway over MAO for order dossiers, triage, and config drift checks.
Built Omniscope, an MCP server on Cloudflare Workers so AI agents can investigate stuck orders safely.
Mapped Atlas, a dependency graph of 69 components and ~2,300 configuration entities.

Suitsupply

Omnichannel menswear retail

Oct 2025 – May 2026

Position: Customer Service Specialist
Location: Amsterdam, NL
Industry: Fashion retail

Global customer operations across chat, email, and phone in Salesforce.

Led chargeback defense, recovering €100K+ in disputed payments.
Handled returns, payments, VAT invoices, and logistics cases end to end.
Worked with stores and warehouses on order issues to keep SLA and CSAT on target.

Concentrix

Customer support for Zara Home

Apr 2025 – Sep 2025

Position: Fashion Advisor / Customer Service Consultant
Location: Barcelona, ES
Industry: Fashion eCommerce

Email and chat support for Zara Home customers.

Resolved returns, product questions, stock checks, and complaints.
Kept CSAT high through product knowledge and clear communication.

Unicaf

Online higher education

Sep 2024 – Mar 2025

Position: Marketing Officer
Location: Cyprus
Industry: EdTech

International campaign execution for an online university.

Ran campaigns across multiple African markets.
Standardised UTM tracking and optimised landing pages for attribution.
Delivered email and CRM workflows in Brevo and Elastic Email; built the marketing wiki in Notion.

TELUS International

Payment operations for Stripe

Apr 2024 – Aug 2024

Position: Customer Service Operations Specialist
Location: Ireland
Industry: Fintech

Payment operations support for Stripe users.

Handled transactions, refunds, disputes, and account investigations under strict SLAs.
Translated technical issues into clear customer guidance.

Andaz Prinsengracht

Five-star hotel by Hyatt

Position: Guest Experience
Location: Amsterdam, NL
Industry: Hospitality

Front desk and guest relations in a five-star hotel.

Check-ins, VIP care, and guest concerns under pressure.

Home/Grown SO14

Social impact lab

Jan 2022 – Dec 2023

Position: Marketing Assistant
Location: Southampton, UK
Industry: Non-profit

Digital presence and events for a social impact organisation.

Managed website and social content; contributed to SEO and research.

Education

University of Southampton

Russell Group university

Position: BSc Business Management
Location: Southampton, UK
Industry: Higher education

Focus on marketing, leadership, and innovation; developed strong analytical and strategic skills.

Aradippou Lyceum

Secondary school

Position: High School Diploma
Location: Cyprus
Industry: Secondary education

Specialised in Marketing, Physics, and Computer Applications with distinction.

Portfolio

Selected work.

Tools, analysis, and systems built to fix real operational problems, plus the marketing and content work that came before. Each project shows the problem, what I built, and what changed.

Strategy & Craft

Content Marketing & Copywriting

Where visuals, words, and strategy work together to tell the right story

Campaigns & CRM

Email Marketing & Campaign Strategy

Where precision and creativity meet performance

Data & Platform

Data, Analytics & Infrastructure

Warehouse queries, governed metrics, Postgres with vector search, and edge deployments

Engineering

Web Applications & Internal Tools

Full-stack applications and internal tools: order-platform tooling, a finance app, and workflow systems

AI & Innovation

AI Labs

MCP servers, agent skills, and a RAG assistant: AI applied to operations and product

Skills

The toolkit.

What I actually work with, grouped by what it is for: engineering, the order platform and its APIs, data, the infrastructure it runs on, AI, delivery, and the marketing stack from earlier roles.