SIEM Engineering & Detection Expert (Freelance)

☞ Certio

Aussicht: 125

Update Tag: 26-11-2025

Ort: Antwerp City Antwerp

Kategorie: Marketing / PR

Industrie:

Jobtyp: Freelance

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Jobinhalt

We are looking for a SIEM Engineering & Detection Engineer.
You will be responsible within the defined time frame to:
  • Setting up Elastic SIEM
  • Update SIEM documentation (log sources, logstash pipelines, logging architecture)
  • Normalisation of incoming data sources
  • Configuration of Azure Sentinel to forward Alerts to Elasticsearch
  • Onboard Sentinel logs to Elasticsearch
  • Mapping of log sources to MITRE, detection gap analysis, creation of use cases based on detection strategy
  • Define the Target Operating Model

Requirements


Experience:
  • ELK stack
  • Elastic SIEM
  • Elastic Common Schema (ECS)
  • Query DSL
  • Logstash ingest Pipelines
  • Data streams
  • Index Templates
  • Scaling of clusters
  • Elastic Security
  • Elastic REST API
  • Telemetry data from endpoints/EDR/NDR/security products
  • Writing and fine-tuning of detection use cases in KQL
  • ML engine in ElasticSIEM
  • Various log sources and their onboarding
  • Data normalization
  • MITRE ATT&CK framework
  • Translating threat intelligence into actionable detections
  • Technical proficient with Windows and Linux
  • Experience with scripting languages, regular expressions, grok, Python
  • Languages: Dutch, English

Competences:
  • Analytical ability, critical attitude coupled with a solution-oriented mindset
  • The ability to work independently and make proactive decisions
  • Excellent time management and interpersonal skills
  • Passionate, decisive and convincing
  • Team player

Benefits

Freelance Opportunity in Antwerp, logistic sector, +/- 4-6 months


More info? Jimmy Strijbos - +32496593389 - jimmy.strijbos@certio.be


Speak you soon!

CERTIO is a Specialised Talent Acquisition & Talent Management Service Provider, with excellence in Recruitment & Selection, Contracting, Assessments & Coaching. Certio is working with and for ICT, Finance, HR, Sales & Marketing and Executive Talent Profiles.
CERTIO delivers services for companies and candidates as a trusted HR Consultancy Partner.

www.certio.be | +32 3 808 09 53 | contact@certio.be
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Frist: 10-01-2026

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