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Maciej Sleziak Email & Phone Number

Lead Automation and AI - Customer Service at BESTSECRET Group
Location: Berlin Metropolitan Area, Germany 10 work roles 4 schools
1 work email found @zalando.de LinkedIn matched
✓ Verified August 2026 4 data sources Profile completeness 100%

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Work email m****@zalando.de
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Current company
Role
Lead Automation and AI - Customer Service
Location
Berlin Metropolitan Area, Germany
Company size

Who is Maciej Sleziak? Overview

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Quick answer

Maciej Sleziak is listed as Lead Automation and AI - Customer Service at BESTSECRET Group, a with 200 employees, based in Berlin Metropolitan Area, Germany. AeroLeads shows a work email signal at zalando.de and a matched LinkedIn profile for Maciej Sleziak.

Maciej Sleziak previously worked as Lead Supply Analytics at Bestsecret Group and Team Lead - In-Season Mangement Operations at Zalando Se. Maciej Sleziak holds Cmime, Business And Entrepreneurship from Whu – Otto Beisheim School Of Management.

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Email format at BESTSECRET Group

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{first}.{last}@zalando.de
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AeroLeads found 1 current-domain work email signal for Maciej Sleziak. Compare company email patterns before reaching out.

Profile bio

About Maciej Sleziak

Experienced professional in areas where conceptual work meets analytics and problem solving.

Listed skills include Graphic Design, Photoshop, Css, Marketing Communications, and 29 others.

Current workplace

Maciej Sleziak's current company

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BESTSECRET Group
Bestsecret Group
Lead Automation and AI - Customer Service
Berlin, DE
Website
Employees
200
AeroLeads page
10 roles

Maciej Sleziak work experience

A career timeline built from the work history available for this profile.

Lead Supply Analytics

Current

Berlin / München

Responsible for:- Supply Reporting, Merchandise Planning Data Provisioning- Buying Tooling- Replenishment- Sizing recommendations

Jul 2023 - Present

Team Lead - In-Season Mangement Operations

Berlin

In-Season operations and replenishment automationLeading a team of 6 process and project managersDefined strategies for replenishment and overstock management and aligned them with key stakeholdersDefined business unit relevant KPIs and automated their reporting through Microstrategy dashboards Coached the team to develop new skills (R, Google Apps Script, VBA, project management)Lead to the automation of replenishment for never-out-of-stock assortment for the Zalando Fashion StoreDesigned and coded a tool enabling the rollout of automated replenishment in the companyOverstock management / profitabilityAligned goods release process to the offprice channels with category merchandise demand planning cycles to assure timely overstock transfers.Designed and implemented extreme unprofitability protection mechanisms In-Season Replenishment Budget Allocation - Zalando Top Performer / WHU MastersCreated an automated replenishment budget allocation logic, concept is now in product discovery

May 2019 - Jun 2023

Senior Controller - Sports

Berlin

Pre-Season Assortment Planning Key driver of category strategy, financial and assortment plans as well as quarterly review processesDesigned, built and rolled out a planning tool to streamline planning processes within the category and shared best practices with other category teamsSales and product performance and tradingSet up a reporting landscape for the Sports category and trained the planning and buying team membersWeekly trade meeting preparation and monthly performance reforecastingWorked together with other category controllers and merchandise planning leads on unifying and standardizing weekly trading documents and proceduresDelivery Tracking Tool Designed, programmed and implemented a tool to automatically remind suppliers of upcoming or missed deliveries to decrease late and missing deliveries reducing manual effort by 80%

Nov 2016 - May 2019

Scm Business Analyst

Berlin Area, Germany

Key Topics: SCM-KPIs, article quality, delivery forecasting, assortment selection for warehousesResponsible for:- Designing and reporting sizing related return KPIs- Leading team reporting migration from Business Objects to Microstrategy- New article and sample delivery forecasting for Content Creation site- Analysis of returns sorting and article deactivation process reorganization- Identification of defective articles on stock- Keeping up reporting standards and increasing reporting speed for purchasing and logistics relevant KPIs (warehouse split, delivery-time split, offline stock, time to online)- New KPI development, evaluation and implementation- Ad-hoc profitability, warehouse and financial analysis- Initial assortment selection for new season deliveries for spoke warehousesTooling: SAP Business Objects, Microstrategy, Excel, Access

Dec 2014 - Oct 2016

Product Experience Designer / Customer Happiness Manager

Berlin Area, Germany

October 2012 - March 2014 - Senior Performance Analyst / Customer Happiness ManagerResponsible for: - Adspert performance quality standards - Adwords KPI monitoring- Google Adwords accounts analytics and reporting- customer advertising performance reporting and troubleshooting- new feature development and review- employee training - Adwords and Adspert- webinar author / speaker (Enhanced Campaigns)- e-book authoring (Display Advertising Handbook)March 2014 - June 2014 - Product Experience DesignerIn addition to previous tasks:- product development (process development, concepts)- mockup design- cooperation with graphics and IT staff- product planning- FAQ expansion

Oct 2012 - Jun 2014

User Experience Design / Project Manager

Ideazone

Warsaw, Masovian District, Poland

Business logic analyst and user experience design team leader. Responsible for developing business ideas into functional prototypes and translating customer requirements into functional specifications.Related skills:- Team leadership- Project planning- Process design- Axure prototyping- User testing- Persona / User stories development- Beta-testing

Apr 2011 - Sep 2012

Global Intern

Sk Networks - S-Movilion

Working on developing a sourcing channel from Europe to Korea.Currently analyzing new car brand introduction possibilities into the Korean market.

Jul 2007 - Sep 2007

Marketing

Ppuh Anima

Developed the PPUH Anima visual communication strategy and website. Successfully launched the website and deployed documents and business materials according to own design.

Jun 2006 - Sep 2006

Local Committee Vice President Marketing & Pr

Jun 2005 - Jun 2006
Team & coworkers

Colleagues at BESTSECRET Group

Other employees you can reach at bestsecret.com. View company contacts for 200 employees →

4 education records

Maciej Sleziak education

Master'S Degree, Marketing, 5

Activities and Societies: AIESECMaster's degree in Marketing and Business Administration. Thesis: Influence of Convergence on Corporate.

FAQ

Frequently asked questions about Maciej Sleziak

Quick answers generated from the profile data available on this page.

What company does Maciej Sleziak work for?

Maciej Sleziak works for BESTSECRET Group.

What is Maciej Sleziak's role at BESTSECRET Group?

Maciej Sleziak is listed as Lead Automation and AI - Customer Service at BESTSECRET Group.

What is Maciej Sleziak's email address?

AeroLeads has found 1 work email signal at @zalando.de for Maciej Sleziak at BESTSECRET Group.

Where is Maciej Sleziak based?

Maciej Sleziak is based in Berlin Metropolitan Area, Germany while working with BESTSECRET Group.

What companies has Maciej Sleziak worked for?

Maciej Sleziak has worked for Bestsecret Group, Zalando Se, Adspert | Bidmanagement Gmbh, Ideazone, and Sk Networks - S-Movilion.

Who are Maciej Sleziak's colleagues at BESTSECRET Group?

Maciej Sleziak's colleagues at BESTSECRET Group include Jesús Pajares Camacho, Jana Voichtleitner, Dirk Ebert, Anke Becker, and Rainer Burghardt.

How can I contact Maciej Sleziak?

You can use AeroLeads to view verified contact signals for Maciej Sleziak at BESTSECRET Group, including work email, phone, and LinkedIn data when available.

What schools did Maciej Sleziak attend?

Maciej Sleziak holds Cmime, Business And Entrepreneurship from Whu – Otto Beisheim School Of Management.

What skills is Maciej Sleziak known for?

Maciej Sleziak is listed with skills including Graphic Design, Photoshop, Css, Marketing Communications, Team Leadership, Analytics, User Interface Design, and Html.

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