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Dennis Marttinen

Founder

Co-founder and CTO at CRACI

Finland

FoundedCRACI

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282 people in our graph share verified history with Dennis — schools, employers, funds. One of them is your warm intro.

ElizabethunlockedDennis: together at Norwegian University of Science and Technology (NTNU) (2023–2025)
×8Dennis: together at Norwegian University of Science and Technology (NTNU)
×3Dennis: together at Aalto University

About

Dennis Marttinen is CTO and co-founder of CRACI. He works as a system architect and software developer across areas including embedded Linux, computer graphics, cloud-native systems, and HPC/supercomputing, with experience spanning firmware to user interfaces. He holds an M.Sc. (Tech.) in Security and Cloud Computing (SECCLO).

Co-founder and CTO at CRACI

Intro paths

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In turn, Dennis can intro founders to CRACI's investors below.

CRACI's investors · 2

Lifeline VenturesHelsinkiWave VenturesHelsinki

Co-founders at CRACI

JNJuho Niemi
Juho NiemiCo-founder and CEO
JSJaakko Sirén
Jaakko SirénCo-founder and CPO
PPPetteri Pulkkinen
Petteri PulkkinenCo-founder and CISO

Experience

  1. CRACICTO, Co-foundercurrent2025 — present
  2. CSC - IT Center for ScienceSystem Specialist2025Finland
  3. Aalto University Department of Computer ScienceResearch Assistant2024Finland
  4. Aalto University Department of Computer ScienceResearch Assistant2023Finland
  5. PatriaJunior Software Developer2022Finland
  6. YO-bitti OySoftware Developer2021 — 2022Finland
  7. The Linux FoundationLFX Mentee2021Finland
  8. WeaveworksSummer Employee for Open Source2020Finland
  9. WeaveworksSummer Employee for Open Source2019Finland
  10. Puolustusvoimat - Försvarsmakten - Finnish Defence ForcesSimulation Software and Network Architect2018 — 2019Finland

Skills & more

Artificial Intelligence (AI)Machine LearningKubernetesHigh Performance Computing (HPC)Cloud-Native Architecture1Cloud-Native ApplicationsOpen-Source DevelopmentInformation SecurityNetwork SecuritySoftware DesignTechnical StrategyTechnical Documentation
+12 moreInformation System DesignElectronic System DesignNetwork DesignContainerizationVirtualizationDevOpsAutomationSystem DeploymentKubeflowTeam LeadershipFirmware DesignEmbedded Systems

Languages English · Finnish · German · Swedish

  • Speaker: KCD Helsinki 2025 — The Linux Foundation
  • Speaker: KubeCon + CloudNativeCon Europe 2025 — The Linux Foundation
  • Starting Up — MinnaLearn

From Dennis's professional profile.

Frequently asked questions

Who is Dennis Marttinen?
Dennis Marttinen is CTO and co-founder of CRACI. He works as a system architect and software developer across areas including embedded Linux, computer graphics, cloud-native systems, and HPC/supercomputing, with experience spanning firmware to user interfaces. He holds an M.Sc. (Tech.) in Security and Cloud Computing (SECCLO).
Where does Dennis Marttinen work?
Dennis Marttinen is Co-founder and CTO of CRACI.
What companies did Dennis Marttinen found?
Dennis Marttinen founded CRACI.
Where did Dennis Marttinen go to school?
Dennis Marttinen studied at SECCLO Master's Programme in Security and Cloud Computing (Erasmus Mundus) (Master of Science - MS, Computer and Information Systems Security/Information Assurance); Aalto University (Master of Science in Security and Cloud Computing (SECCLO) - M.Sc. (Tech.), Computer and Information Systems Security/Information Assurance); Norwegian University of Science and Technology (NTNU) (Master of Science (MSc) in Security and Cloud Computing, Computer and Information Systems Security/Information Assurance).

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Shared employers