Joni Hahkala
Fähigkeiten und Kenntnisse
Werdegang
Berufserfahrung von Joni Hahkala
- 3 months, Sep 2024 - Nov 2024
Senior Java Developer
AirPlus International GmbH
- 4 years and 9 months, May 2019 - Jan 2024
Senior Backend Developer
Vitasystems GmbH
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. Technologies: Java, Spring Boot, Postgres, Kubernetes, Docker, Jenkins, Git, Maven, RabbitMQ, Hibernate, OpenEHR, HL7v2, FHIR, Intellij
- 5 months, Dec 2018 - Apr 2019
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. Technologies: Java, Spring Boot, MongoDB, Docker, Jenkins, Git, Maven, Kafka, Hibernate, Intellij
- 9 months, Mar 2018 - Nov 2018
Senior Android Developer
vitaliberty GmbH
Planned and implemented new app screens and features. Restructured and rewrote the codebase using latest technologies (Android Jetpack). Optimized the database structure. Defined backend APIs.
Held a course on Distributed Systems for the International Management for Business and Information Technology program
- 2 years and 5 months, Jan 2015 - May 2017
Co-founder, technical expert
Syneidis SA
Creation of the main idea. Design of the overall architecture of secure cloud data storage The initial implementation of the Java backend and Android app Management of subcontracted developers
- 1 year, Jan 2014 - Dec 2014
System Architect
IceVault
Design of overall system and creation of backend for submitting special Bitcoin transactions.
- 15 years and 7 months, Jun 1999 - Dec 2014
Project researcher
Helsinki Institute of Physics @ CERN
Research and development of authentication and authorization systems for globally distributed computing system.
Ausbildung von Joni Hahkala
- 11 years and 10 months, Sep 1993 - Jun 2005
Computer Science
Helsinki University of Technology
Sprachen
Finnish
C2 (Verhandlungssicher / Muttersprachlich)
English
C1 (Fließend)
French
A1-A2 (Grundkenntnisse)
German
B1-B2 (Gute Kenntnisse)
Swedish
A1-A2 (Grundkenntnisse)
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