Denis Fischer - IT Security Consultant

Q: Where is Denis based?

Denis is based in Heilbronn, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Denis speak?

Denis speaks the following languages: German (Native), English (Advanced), Russian (Advanced) .

Q: How many years of experience does Denis have?

Denis has at least 5 years of experience. During this time, Denis has worked in at least 1 role and for 5 different companies . The average length of individual experience is 1 year and 1 month . Note that Denis may not have shared all experience and actually has more experience.

Q: What is Denis's latest experience?

Denis's most recent position is IT Security Consultant at Logistikdienstleister .

Q: What companies has Denis worked for in recent years?

In recent years, Denis has worked for Logistikdienstleister , Dienstleistungsbranche , Finanzdienstleister , Pharmaindustrie , and Mittelstandsunternehmen .

Q: Which industries is Denis most experienced in?

Denis is most experienced in industries like Information Technology , Transportation , and Professional Services . Denis also has some experience in Pharmaceutical and Banking and Finance .

Q: Which business areas is Denis most experienced in?

Denis is most experienced in business areas like Information Technology and Audit .

Q: What is Denis's education?

Denis attended Fa. Läpple for Industrial Mechanic .

Q: What is the availability of Denis?

Denis is immediately available full-time for suitable projects.

Recommended expert

Heilbronn, Germany

Check rate

Experience

Jan 2024 - Present

2 years 5 months

IT Security Consultant

Logistikdienstleister

Setting up a centralized security monitoring system (SIEM)
Integrating and onboarding log sources (Windows, network, applications)
Developing dashboards and alert structures
Structuring data models for efficient analysis

Jan 2023 - Dec 2024

2 years

IT Security Consultant

Dienstleistungsbranche

Setting up security monitoring in Azure
Analyzing user and access events
Using Azure Defender and Log Analytics
Defining and implementing alerting rules

Jan 2023 - Dec 2023

1 year

IT Security Consultant

Finanzdienstleister

Developing and optimizing analytic rules and detection use cases
Adjusting KQL queries to reduce false positives
Creating and enhancing workbooks to visualize security events
Structuring and analyzing security incidents
Contributing to the continuous improvement of detection strategies

Jan 2022 - Dec 2023

2 years

IT Security Consultant

Pharmaindustrie

Implementing a company-wide log management concept
Defining relevant security log types
Preparing audit reports
Ensuring compliance requirements are met

Jan 2021 - Dec 2022

2 years

IT Security Consultant

Mittelstandsunternehmen

Assisting in analyzing security-related incidents
Supporting the definition of incident-handling processes
Creating simple process descriptions and checklists
Participating in lessons-learned workshops

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Transportation, Professional Services, Pharmaceutical, and Banking and Finance.

Information Technology

Transportation

Professional Services

Pharmaceutical

Banking and Finance

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology and Audit.

Information Technology

Audit

Summary

IT security since 2020: IT Security Consultant with a focus on SIEM, detection engineering, and security monitoring in cloud and hybrid IT environments. Experience in developing, implementing, and optimizing detection use cases, analytic rules, and alerting strategies in Microsoft Sentinel and Splunk. Specialized in log management, data integration, and analysis of security-relevant events to improve incident detection and reduce false positives. First hands-on experience in threat hunting through proactive analysis of log data and developing new detection approaches.

Skills

Antivirus (Microsoft Defender), Microsoft Windows Defender, Azure Advanced, Treat Protection (Atp), Splunk (Cloud)
Owasp
Aws Security
Dns (Windows), Dhcp (Windows), Monitoring
Windows, Debian/Ubuntu, Active Directory, Azure Active Directory
Siem: Microsoft Sentinel, Splunk
Query Languages: Kql, Spl
Cloud: Azure, Aws
Security Tools: Defender, Atp
Systems: Windows, Active Directory
Scripting: Powershell (Basics)
Microsoft Office 365, Azure Active Directory, Azure Sentinel, Azure Eventhub, Microsoft Defender For Cloud, Azure Policies, Azure Diagnostic Settings & Log Analytics Workspace, Kql
Vpc, Ec2, Shield, S3, Cloudtrail, Cloudwatch, Lambda, Iam, Sns/Sqs
Critical Infrastructure
Iso 27001
Bsi It Baseline Protection
Ethical Hacking – Hack The Box, Juice Shop, Portswigger
Bug Bounty Hunting – Hacker One

Languages

German

Native

English

Advanced

Russian

Advanced

Education

Fa. Läpple

Industrial Mechanic · Germany

Statistics

Experience

Total positions 5

Experience in Information Technology 4 y

Avg length 1 y 10 m

Longest experience 2 y 4 m

Expertise

Recent roles IT Security Consultant

Main industries Information Technology, Transportation, Professional Services

Main business areas Information Technology, Audit

Profile

Created

April 2026

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Frequently asked questions

Have questions? Find more information here.

Where is Denis based?

Denis is based in Heilbronn, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Denis speak?

Denis speaks the following languages: German (Native), English (Advanced), Russian (Advanced).

How many years of experience does Denis have?

Denis has at least 5 years of experience. During this time, Denis has worked in at least 1 role and for 5 different companies. The average length of individual experience is 1 year and 1 month. Note that Denis may not have shared all experience and actually has more experience.

What roles would Denis be best suited for?

Based on recent experience, Denis would be well-suited for roles such as: IT Security Consultant.

What is Denis's latest experience?

Denis's most recent position is IT Security Consultant at Logistikdienstleister.

What companies has Denis worked for in recent years?

In recent years, Denis has worked for Logistikdienstleister, Dienstleistungsbranche, Finanzdienstleister, Pharmaindustrie, and Mittelstandsunternehmen.

Which industries is Denis most experienced in?

Denis is most experienced in industries like Information Technology, Transportation, and Professional Services. Denis also has some experience in Pharmaceutical and Banking and Finance.

Which business areas is Denis most experienced in?

Denis is most experienced in business areas like Information Technology and Audit.

What is Denis's education?

Denis attended Fa. Läpple for Industrial Mechanic.

What is the availability of Denis?

Denis is immediately available full-time for suitable projects.

What is the rate of Denis?

Denis's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.