Alex Constantinescu - Data-Driven Digital Marketer Amsterdam - About
what happens when creativity meets data in marketing?
You get marketing that's both art and science - feels human and drives results. It's a rare combination, and there's a story behind how I learned to make it work
Hi, I'm Alex - the junior marketer with a nick for design, data and tech
I'm a junior digital marketer based in Amsterdam with an ambitious plan: deliver marketing campaigns that have purpose, with clockwork-like performance. To do this, I'm combining creative strategy, technical skills, and data analytics to solve problems that traditionally require entire teams.
What started as a curiosity about why some campaigns succeed while others fail has evolved into something more - an Alice in Wonderland-like curiosity that dives deep down the rabbit hole of 'what works,' 'why does it work,' and 'how can we replicate it'. The goal: marketing that humans love, and answers managers need.
Simply put: I turn data into creative campaigns - and creative ideas into measurable results.
Here's how I think and my story - on short.
Marketing-first mindset
Mixing analytical & technical thinking for the next-gen marketing 4.0
During my journey as a student and beginner marketer, I observed marketing teams often had to deal with complex problems - requiring a mix of creative and technical skills. Most often than not, they tended to have a deficiency in one of these areas. The solutions were improvised, quick fixes, time- and resource-consuming. There had to be a better way.
Having a passion for coding and complex challenges since highschool, I set myself a goal in 2022: to develop the skillset similar to that of a Growth Hacker that understands and uses both creativity and tech skills to overcome challenges. The reason was simple: to be able to tackle any issues in a more efficiently, achieving better results and higher growth.
My plan was divided in the three large skill areas I would have to master:
- Marketing Strategy, Management & Branding - provided by most Bachelor's level marketing courses
- Digital Marketing Stack - these aspects, largely learnable through online courses, were gained in 2021, and later applied and refined through the professional experiences. Includes skills such as SEA, Social Media Marketing and Content Marketing.
- Technical Marketing Stack - largely unprovided by Business Administration bachelor's degrees, but offered by IU University of Applied Sciences and easily learnable through online learning platforms. Includes subjects such as data science & analysis, coding, marketing mix modeling, CRM software and martech.
This ambitious plan's goal: master these skills by 2025.
So, what's the status? See for yourself in the timeline below.
Explored various marketing areas and gained skills through courses at Avans University of Applied Sciences (Breda, NL) and Online Courses:
- Social Media Marketing
- Email Marketing
- UI/UX
- Guerrilla Marketing
- SEA
- Marketing Strategy & Tactics
- Market Research & Data Visualization
Set myself the goal to gather the needed technical skills, resulting in my enrollment at IU University of Applied Sciences (Berlin, DE).
Created Growly with a few friends, mixing our skills in Marketing, Web Dev, Branding and Copywriting to have a modern, state-of-the-art digital agency for SMEs in Bucharest with high-quality services and fair pricing.
Through Growly, I refined my stakeholder communication abilities, learned to use HubSpot, Google Analytics, Facebook Ads and Google Ads.
Used Tableau and started exploring Data Science and Attribution Models to help clients understand the impact of our services on their businesses and revenues.
Moved on from Growly to fully focus on my academic and professional goals.
Learned Growth Hacking from the course materials of the masters degree with the same name provided by IU.
Started learning Data Science and AI in Marketing and Supply Chain from other course materials provided in two other IU's masters.
Finished my Bachelor's degree. Relevant last year modules include:
- Salesforce Platform Building & Development via my degree
- Data Science & Python
- Operations Research & Linear Algebra
Started creating various Marketing Mix Modeling apps.
How I work
Problem Solving Process.
Structured series of steps through which I approach marketing challenges regardless of their nature - from investigation to solving and stakeholder communication
1. Investigation
The goal is to identify the underlying challenge and the affected KPIs and business goals. Gathering insights, state-of-the-art solutions, specifications and necessities.
2. Planning
Finding the best solution, combining creativity and technical thinking. Establishing the skillset needed to solve it - creative and/or technical. Creating project plan, deliverables, and project control measures.
3. Execution
Ideas are translated into tangible concepts which align with the business goals and KPIs. Testing, progress communication and feedback is asked from stakeholders at the end of every predetermined period.
4. Control & Feedback
The project is launched and running. KPIs and other control measures are implemented and frequently reviewed. Handover to the relevant stakeholders with documentation and, if needed, updates based on feedback.
Projects.
Check out some of my work
Skills.
A comprehensive toolkit combining technical expertise, creative thinking, and strategic marketing knowledge to deliver data-driven campaigns that drive measurable business growth.
Hard Skills
Digital Marketing Stack
MarTech
Branding & Creative
Data Science & Salesforce
AI
Soft Skills
Communication
Problem-solving
Organization
Learning & Improving
Self-motivation
Emotional Intelligence
Experience & Education.
My relevant work experience and formal education.
Experience
Digital Marketer
Part ownership in Growly. Some of the key responsibilities and achievements include:
- Market Research & Strategy - Conducted secondary market research to identify the best audiences, created customer personas, and adapted the tactics and packages' Value Propositions based on their needs.
- Design that saves Time - Designed the materials needed for outreach, cold outreach, conversion, client on-boarding and reporting in the form of email, PDF and Powerpoint templates, streamlining the onboarding, consulting, reporting and reporting processes.
- Campaign Management - Executed Facebook Ads and Google Ads campaigns for 20+ clients, focusing on data-driven optimization and performance tracking, resulting on average in 40% website traffic growth, and 10% revenue growth.
- Competitor Analysis - Created 40+ comprehensive marketing audits and competitor analyses using SERanking and Semrush.
- HubSpot - Managed daily lead processing, email marketing campaigns and landing pages through HubSpot CRM integration.
- Reporting - Delivered monthly performance reports using Tableau and PowerPoint, helping clients understand campaign effectiveness.
B2B Marketing Intern
Some of the key responsibilities and achievements include:
- Customer Segmentation - Led customer segmentation project in Excel, defining five key personas and presenting insights to improve targeting strategies.
- Social Media Growth - Developed and executed LinkedIn content strategy, achieving 17% engagement increase and 28% follower growth through data-driven content optimization.
- Campaign Management - Assisted in the creation and management of 12+ multi-channel B2B marketing campaigns using Dynamics 360 and other software, primarily involving LinkedIn Ads, Email Marketing, Unbounce landing pages and Events Marketing.
- Email Marketing - Initiated A/B testing, personalization and the use of audience segmented lists in Email Marketing, resulting in an increase in 20% in Open rates and 7% in CTR.
- Lead Management - Processed 70+ daily inbound leads in Dynamics 360 CRM.
- SEO Analysis - Conducted a comprehensive website audit using Google Analytics and Semrush, identifying optimization opportunities and presenting actionable recommendations.
- Data Cleaning - Tasked regularly for data cleaning and preprocessing tasks in Dynamics 360 CRM and Excel regarding leads and accounts.
- Process Creation - Established detailed process documentations, templates and naming conventions for cross-channel campaign management and Dynamics 360 CRM.
- Content Marketing - Aided in the creation of a Content Schedule, and created content for the website and internal platform using Wordpress CMS.
Formal Education
M.sc. in Marketing - Digital Marketing & Analytics (Amsterdam)
Currently enrolled in VU's Marketing masters degree, following the Digital Marketing & Analytics track. Some of the relevant courses and developing skills include:
- Customer & Marketing Analytics - learning to use R, SPSS and Excel for marketing analytics purposes
- Consumer Marketing - studying the application of consumer behavior, behavioral economics, sociology and social psychology concepts for designing campaigns and advertising
- Advertising & Media Channels - learning core multi-channel campaign management practices aided by research-backed best practices and R-powered analytics
Bachelors in Business Administration (Berlin, DE)
Graduated with a GPA of 8.60. Some of the key areas and their courses include:
- Marketing & Marketing Management - International Marketing, International Brand Management, Online Marketing, Social Media Marketing
- Technical - Business Mathematics, Statistics, Linear Algebra, Operations Research, Salesforce Platform Admin & Builder, Salesforce App Developer, Data Science, Programming with Python
- CX & Processes - Service Operations Management, Digital Business Models
- Project Management - Principles of Management, Agile Project Management, Current Issues in International Management
- Thesis - Using MINLP and XGBoost to Optimise and Predict Marketing Campaign Performance
B.sc. in International Business Administration (Breda, NL)
Unfinished degree as I chose to transfer to another university. Relevant courses and activities include:
- Marketing - Learned the fundamentals of marketing strategy, tactics, and digital marketing by taking 4 courses on the topic and conducting various projects.
- Research & Data Analysis - Undertook courses such as Research Methods, Statistics, Data Management and Data Visualization in Tableau, providing a solid foundation for data-based decision-making.
- Teamwork - Actively collaborated in 7 projects in various international teams, achieving great intercultural communication, team cohesion, conflict management and task distribution soft skills.
- Cancan Marketing Plan - Individually responsible for Marketing Strategy (tactics and budget) and Controls sections. Awarded with top grades by the brand's executives and evaluation commission (10/10 for Controls and Organization, 9.3/10 for Marketing Strategy, 9/10 for Finance)
- Design for Proof-of-concepts - Learned to use the Adobe Creative Suite on my own to create proof-of-concepts for the proposed Guerrilla Marketing tactics and a high-fidelity ecommerce website for the Cancan project.
Online Courses & Self-Learning.
As a strong believer of life-long learning and being up-to-date with the latest technologies and trends, I completed a large list of courses and certifications throughout my journey of developing the skills I wanted. Here is the full list of the online courses and self-learning subject areas.
Digital Marketing Stack
Completed Online courses and Certifications include:
- B2B Marketing Foundations (LinkedIn Learning, 2022)
- Search Engine Optimization (HubSpot Academy, 2022)
- Digital Advertising Certification (HubSpot Academy, 2022)
- Inbound Marketing Certification (HubSpot Academy, 2022)
- Digital Marketing Certification (HubSpot Academy, 2022)
- Content Marketing Certification (HubSpot Academy, 2022)
MarTech
Ad platforms:
Facebook Ads
- Meta Marketing Science Professional (Meta Blueprint, 2023)
- Meta Media Buying Professional (Meta Blueprint, 2023)
- Meta Media Planning Professional (Meta Blueprint, 2023)
Google Ads
- Google Ads Search (Google Skillshop, 2022)
- Google Ads Display (Google Skillshop, 2022)
- Google Ads Measurement (Google Skillshop, 2022)
LinkedIn Ads - LinkedIn Ads Training (LinkedIn Learning, 2022)
Web Analytics:
- Google Analytics - Google Analytics Certification (Google Skillshop, 2023)
- Semrush - Semrush Academy courses (2022 - 2023)
- Tableau - Youtube tutorials, forums (2021 - present)
CRM & Integrated Marketing Automation software:
- Salesforce App Admin & Building (Salesforce Trailhead, 2025)
- Salesforce App Developer (Salesforce Trailhead, 2025)
- Hub Spot Marketing Hub Software (HubSpot Academy, 2022)
- Dynamics 360 CRM for marketing - learned during the 2022 Studyportals internship
Growth Hacking
Studied the course materials of the Growth Hacking Masters Degree (M.A.) of IU University of Applied Sciences during 2023 - 2024. Relevant courses include:
- Advanced Marketing Controlling
- Advanced Growth Hacking
- International Consumer Behavior
- Data-Driven Marketing
- Data Analytics & Strategies
- User Interface & Experience
- Market Research
Data Science & AI applied in Marketing
Followed the course materials of 2 masters degrees (M.sc.) provided by IU University of Applied Sciences during 2024 - 2025. Some of the most important courses include:
Data Science & Analytics:
- Data Science Software Engineering
- Model Engineering Big Data Technologies
- Use Case & Evaluation
- Data Modeling & Reporting
- Extract, Transform and Load (ETL) Technologies
- Leveraging Data Sources & Data Mining
AI:
- Machine Learning
- Reinforcement Learning
- Deep Learning
- NLP & LLM
Industry applied:
- Introduction to AI in E-commerce & Marketing
- AI in Marketing & Analytics
- Personalization and Recommender Systems
- Demand Forecast & Inventory Control
UI/UX & Design Tools
UI/UX:
- Google UX Design Professional Certificate (Coursera, 2023)
- User Interface & Experience course (IU University of Applied Sciences, 2024)
Design Tools:
- Adobe Photoshop - Youtube courses (2018 - 2020)
- Adobe InDesign - Youtube courses (2018 - 2020)
- Adobe Xd - Udemy course (2021)
- Adobe Dimensions - forums, tutorials, self-exploration
Let's work together.
Reach out and let's talk.
