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Joni Hahkala Email & Phone Number
Senior Java and DevOps Engineer
at
GRASS GmbH Bad Kreuznach
1 work email found
@cern.ch
LinkedIn matched
✓ Verified Jul 2026
4 data sources
Profile completeness 100%
Current company
Role
Senior Java and DevOps Engineer
Location
Mannheim, Baden-württemberg, Germany
Company size
Who is Joni Hahkala? Overview
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Quick answer
Joni Hahkala is listed as Senior Java and DevOps Engineer at GRASS GmbH Bad Kreuznach, a with 22 employees, based in Mannheim, Baden-württemberg, Germany. AeroLeads shows a work email signal at cern.ch and a matched LinkedIn profile for Joni Hahkala.
Joni Hahkala previously worked as Senior Java Developer at Airplus International and Senior Backend Developer at Vitagroup. Joni Hahkala holds Master Of Science (M.Sc.), Computer Science, 3.23 (Maximum 5) from Aalto University.
Company email context
Email format at GRASS GmbH Bad Kreuznach
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{first}.{last}@cern.ch
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AeroLeads found 1 current-domain work email signal for Joni Hahkala. Compare company email patterns before reaching out.
Profile bio
About Joni Hahkala
Experienced Software Engineer and Architect with skills in Java and Android development, DevOps, Cryptography and Computer Science. Strong information technology professional with a Master of Science (M.Sc.) in Computer Science from Aalto University.
Listed skills include Grid Computing, Computer Science, Linux, Distributed Systems, and 27 others.
Current workplace
Joni Hahkala's current company
Company context helps verify the profile and gives searchers a useful next step.
Grass Gmbh Bad Kreuznach
11 roles
Joni Hahkala work experience
A career timeline built from the work history available for this profile.
Senior Java Developer
Senior Backend Developer
Developed medical data processing, transformation, storage and communication systems linking hospitals and doctor's practices. Implemented CI/CD system with releases and deployments to Kubernetes clusters.
May 2019 - Jan 2024
Senior Backend Developer
Vitaliberty Gmbh
Implemented new features; restructured, simplified and brought up to date existing code; defined apis. Used: Spring boot, Netflix stack, Kafka, Docker, Microservices. Maintained the Android app.
Dec 2018 - Apr 2019
Senior Anroid Developer
Vitaliberty Gmbh
Planned and implemented new app screens and features. Restructured and brought up to date the app codebase and database structure. Defined backend APIs. Used: Live data, data binding, Dagger 2.
Mar 2018 - Nov 2018
Lecturer
Course on Distributed Systems for the International Management for Business and Information Technology program.
May 2018 - Jul 2018
Co-Founder, Technical Lead
- Technical and functional design of a secure cloud storage system. - Android app, REST JSON Java Spring Boot web service, MongoDB and Infinispan backend. - Dropbox, Google, LinkedIn, Twitter and Facebook integration. - Cloud deployment, system hardening, system administration.- Subcontracting task definitions and management.
Jan 2015 - May 2017
System Architect
Designing and developing high security bitcoin vallet and escrow services.
Jan 2014 - Dec 2014
Project Researcher @ Cern
2013 – 2014 Design and implementation of secure distributed storage:- Data distribution by striping with Reed-Solomon Forward Error Correcting codes.- Key distribution using Shamir’s secret sharing scheme.- Java client and Tomcat java servers with Infinispan DB.2004 – 2012 Enabling Grids for E-sciencE (EGEE) I, II, III and EGI:- Head of security work package in EGEE II.- Research and further development of the security systems.- Contributing member of the operational security, risk management and virtualorganization management groups.- Source code management, testing, releases, linux packaging, support.2002 – 2003 European DataGrid project:- Design and implementation of a java authentication and certificate verificationsystem for the globally distributed computing Grid.1999 – 2002 TuoviWDM project :- Data visualization and Windows shell integration for a document managementsystem that became a successful spin-off company.
Jun 1999 - Dec 2014
Developer
Data visualization and user interface work for TuoviWDM project.
Jun 1996 - May 1999
Jun 1999 - Dec 2014
1 education record
Joni Hahkala education
FAQ
Frequently asked questions about Joni Hahkala
Quick answers generated from the profile data available on this page.
What company does Joni Hahkala work for?
Joni Hahkala works for GRASS GmbH Bad Kreuznach.
What is Joni Hahkala's role at GRASS GmbH Bad Kreuznach?
Joni Hahkala is listed as Senior Java and DevOps Engineer at GRASS GmbH Bad Kreuznach.
What is Joni Hahkala's email address?
AeroLeads has found 1 work email signal at @cern.ch for Joni Hahkala at GRASS GmbH Bad Kreuznach.
Where is Joni Hahkala based?
Joni Hahkala is based in Mannheim, Baden-württemberg, Germany while working with GRASS GmbH Bad Kreuznach.
What companies has Joni Hahkala worked for?
Joni Hahkala has worked for Grass Gmbh Bad Kreuznach, Airplus International, Vitagroup, Vitaliberty Gmbh, and Baden-Wuerttemberg Cooperative State University (Dhbw).
How can I contact Joni Hahkala?
You can use AeroLeads to view verified contact signals for Joni Hahkala at GRASS GmbH Bad Kreuznach, including work email, phone, and LinkedIn data when available.
What schools did Joni Hahkala attend?
Joni Hahkala holds Master Of Science (M.Sc.), Computer Science, 3.23 (Maximum 5) from Aalto University.
What skills is Joni Hahkala known for?
Joni Hahkala is listed with skills including Grid Computing, Computer Science, Linux, Distributed Systems, Java, High Performance Computing, Bash, and Python.
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