David Hájek
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David Hájek Email & Phone Number

Datový inženýr at NN
Location: Prague, Czechia, Czech Republic 8 work roles 2 schools
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✓ Verified July 2026 3 data sources Profile completeness 86%

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Current company
NN
Role
Datový inženýr
Location
Prague, Czechia, Czech Republic
Company size

Who is David Hájek? Overview

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Quick answer

David Hájek is listed as Datový inženýr at NN, a with 10089 employees, based in Prague, Czechia, Czech Republic. AeroLeads shows a matched LinkedIn profile for David Hájek.

David Hájek previously worked as Data Engineer at Merkle and Big Data Engineer at Adastra. David Hájek holds Magistr (Mgr.), Bioanalytik from Univerzita Pardubice.

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NN

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Profile bio

About David Hájek

I am a self-taught engineer with a passion for data and machine learning, and I have honed my skills through professional experience and formal education, including a Data Science certification from DataCamp and a course at Stanford University on Artificial Intelligence in Healthcare. Outside of my career, I actively participate in projects on platforms like Kaggle and GitHub to further hone my expertise. My main goal is to combine my IT knowledge with my background in biology to uncover new insights and drive transformational change at the intersection of technology and life sciences. Kaggle: https://www.kaggle.com/code/davidhjek/disaster-tweets-pytorch-and-bertGitHub: https://github.com/dhajek25/bio_data

Current workplace

David Hájek's current company

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NN
Nn
Datový inženýr
Prague, Czechia
Website
Employees
10089
AeroLeads page
8 roles

David Hájek work experience

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Datový Inženýr

Nn

Prague, Czechia

Data Engineer

Prague, Czechia

Big Data Engineer

Prague, Czechia

Data Engineer

Prague, Czechia

Data Analytics Engineer

Idc

As a Data Analytics Engineer, I am part of a internal project where I orchestrate the continuous flow of data from multiple sources (internal and external). My expertise goes beyond traditional data management techniques as I use advanced methodologies such as linear programming, along with tools such as Snowflake and Python, to optimize data workflows. Within this framework, I perform a range of operations including extraction, transformation, cleansing and complex data analysis, culminating in the derivation of measurable metrics.In addition, my responsibilities extend to working with business analysts to ensure alignment between data insights and organizational goals. This includes day-to-day communication and creation of solution documents to streamline processes and improve decision making.An integral aspect of my role involves project expansion, where I integrate additional attributes from internal modules and external sources. Leveraging API calls, I adeptly retrieve data in JSON format, enriching our dataset with diverse insights.In our quest for efficiency and effectiveness, we have explored the integration of machine learning and artificial intelligence solutions into our workflows. In experimenting with ML/AI, we have sought to automate processes.

Feb 2023 - Oct 2024

Data Analyst

During my time at ČSOB, a key aspect of my role was to perform in-depth analysis of application logs, which provided information about the use of the application by users. One of my contributions was the creation of Data Mart, carefully designed to centralize and organize data from disparate sources to facilitate simplified access and analysis for stakeholders across the organization.

Jun 2021 - Jan 2023

Software Tester

SQL, SoapUI, Postman, Kibana, JIRA, Confluence, Application administration, agile testing

Aug 2020 - Jul 2021
Team & coworkers

Colleagues at NN

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2 education records

David Hájek education

Magistr (Mgr.), Bioanalytik

Master thesis: DNA fragmentation – marker of cytotoxicity Focused on molecular biology, immunology, biochemistry and instrumental chemistry.

Bakalář (Bc.), Clinical Laboratory Science/Medical Technology/Technologist

Bachalor thesis: Use of chaperones in the preparation of medically relevant recombinant proteins Focused on anorganic, organic chemistry.

FAQ

Frequently asked questions about David Hájek

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

What company does David Hájek work for?

David Hájek works for NN.

What is David Hájek's role at NN?

David Hájek is listed as Datový inženýr at NN.

Where is David Hájek based?

David Hájek is based in Prague, Czechia, Czech Republic while working with NN.

What companies has David Hájek worked for?

David Hájek has worked for Nn, Merkle, Adastra, Idc, and Trask.

Who are David Hájek's colleagues at NN?

David Hájek's colleagues at NN include Joani B Drimor, Gulyás Gergely, Nn Nn, Ilkay Gemici, and Adéla Tůmová.

How can I contact David Hájek?

You can use AeroLeads to view verified contact signals for David Hájek at NN, including work email, phone, and LinkedIn data when available.

What schools did David Hájek attend?

David Hájek holds Magistr (Mgr.), Bioanalytik from Univerzita Pardubice.

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