Full-Stack Architect andDeveloper skilled in Integration, DevSecOps, IAM, and Team Leadership
Aktualisiert am 11.03.2024
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 31.03.2024
Verfügbar zu: 100%
davon vor Ort: 60%
Integration
Java
Fullstack
C#
Python
Web stack
Oracle
ESB
DevOps
Performance
Architekt
Ansible
Messaging
SOA
UML
Enterprise Architect
Teamleading
Front-End
Open Source
Container
Cloud
Nifi
IAM
Slovak
Muttersprache
Hungary
Muttersprache
Czech
Verhandlungssicher
English
Verhandlungssicher

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

2 years
2022-04 - now

Streaming flight data from aircraft

FULL-STACK ARCHITECT AND DEVELOPER Java Python c# ...
FULL-STACK ARCHITECT AND DEVELOPER
  • As full-stack developer, I actively participated in all layers, from frontend to low-level backend services and integrations
  • I played an integral role in evolving the architecture and the analysis of both business and technical requirements across all layers for customer-centric application solutions
  • These solutions allow customers to upload large volumes of data from aircraft black boxes or directly stream data from aircraft to a ground station for further flight processing and aircraft analysis
  • Collaborated with the DevOps and Security team to ensure the seamless deployment and operation of the solution across various environments
  • Participated in the analysis and full implementation of desktop application (as commercial product) deployed on the customer's side to process and analyze data from recorders
  • Led the technical design of various architectural strategies, proposals, and processes from development to deployment in both internal and external environments
Java Python c# Apache Cassandra MS SQL Server Spring ansible Docker Bash Windows Presentation Foundation robot framework ReactJS prometheus Grafana Enterprise Architect CMake .NET Framework Gradle Teamleading Prometheus flask conan DevSecOps Bamboo REST
Honeywell, Aerospace department
Brno/remote
1 year
2021-04 - 2022-03

Implemented and maintained authentication and authorization methods

Member of the Identity and Governance team Java Bash SQL ...
Member of the Identity and Governance team
  • As team member of the security department, I implemented and maintained authentication and authorization methods and policies based on Kerberos, LDAP, SAML, MFA, OIDC, OAuth, etc., for the central access management stack
  • Additionally, I integrated and onboarded applications to the central access management (SSO) system
  • Led the upgrade of the access management stack to the latest version and implemented first version of Dev(Sec)Ops solution
Java Bash SQL Ansible JavaScript Oracle Identity and Access Management web stack security stack CI/CD Dev(Sec)Ops Gitlab
Central Bank
Frankfurt, Germany
2 years 2 months
2019-02 - 2021-03

Implementing the central integration batch platform in bank

Full-stack architect and developer Java C# Bash ...
Full-stack architect and developer
  • Served as Full-stack architect and developer, implementing the central integration batch platform based on Apache NiFi
  • Led the design and development of simplified UML methodology that enables the modeling of integration flows with minimal programming skills and day-to-day management
  • Designed and implemented extensions for generating integration flows from Sparx Enterprise Architect to Apache NiFi, with deployment across environments based on DevOps principles
  • Participated in the analysis and implementation of various tools and utilities to support daily operations and maintenance of integration solutions
Java C# Bash Python SQL/NoSQL Angular Spring UML Apache NiFi messaging web stack Ansible Nifi SQL Enterprise Architect Integration Gitlab Kafka Infrastructure as a Service PL/SQL
Bank
Bratislava, Slovakia 
5 months
2020-08 - 2020-12

Implementation and deployment of the central Single Sign-On (SSO)

Full-stack architect and developer for SSO Java Bash Oracle Identity and Access Management ...
Full-stack architect and developer for SSO
  • Responsible for the implementation and deployment of the central Single Sign-On (SSO) solution for the core banking system
Java Bash Oracle Identity and Access Management web stack WebLogic Oracle Identity Management Java EE
Bank
Bratislava, Slovakia
5 months
2020-05 - 2020-09

Responsible for upgrading the Oracle Identity stack

Team member for upgrade OIM 9g TO 12c Java Oracle Identity and Access Management
Team member for upgrade OIM 9g TO 12c

Java Oracle Identity and Access Management
Insurance
Prague, Czech Republic
5 months
2018-10 - 2019-02

Single Sign-On (SSO) integration

Full-stack OAM developer Java Spring Oracle Identity and Access Management ...
Full-stack OAM developer
  • Led as Full-stack analyst and developer for Single Sign-On (SSO) integration, using central instance of OAM 12c across multiple environments
  • Implemented custom multi-factor authentication and authorization methods for various workflows
  • Prepared the initial analysis for the upcoming OIM implementation
Java Spring Oracle Identity and Access Management Red Hat Middleware web stack LDAP RSA security stack JBoss Application Server Java EE
Merchant services
Bratislava, Slovakia
1 month
2018-12 - 2018-12

Identify technical bottlenecks and address performance issues

Performance analyst Java Oracle Fusion Middleware Hazelcast ...
Performance analyst

Java Oracle Fusion Middleware Hazelcast Linux network infrastructure
Insurance
Bratislava, Slovakia
1 month
2018-09 - 2018-09

Implemented validators for the national E-health system (CEZIH)

Member of team for E-HEALT (CEZIH) Java ESB Axway API Gateway ...
Member of team for E-HEALT (CEZIH)

Java ESB Axway API Gateway XQuery XSLT
Private customer
Zagreb, Croatia
8 months
2018-01 - 2018-08

Specialized in security and performance for an existing solution

System performance analyst Java Oracle Fusion Middleware Oracle Identity and Access Management ...
System performance analyst
  • Specialized in security and performance for an existing solution deployed in production, providing analyses for the implementation of various methods of authentication and authorization
  • Performed performance analysis, identified bottlenecks, and offered solutions for JVM, application stack, LDAPs, and API Gateway
Java Oracle Fusion Middleware Oracle Identity and Access Management LDAP web stack Security stack SQL NoSQL Linux virtualization infrastructure Performance Analyse Access Gateway
Public sector
Bratislava, Slovakia
6 months
2017-07 - 2017-12

Implemented SOA and BPM processes

Principal consultant Java Oracle Fusion Middleware Stack SOA ...
Principal consultant
  • Implemented SOA and BPM processes, worked as Full-stack developer for CI/CD in these areas, and successfully resolved performance bottlenecks across various application layers
Java Oracle Fusion Middleware Stack SOA CI/CD
Banks and Insurances
Bratislava, Slovakia
7 years
2010-07 - 2017-06

Integration

SENIOR DEVELOPER - INTEGRATION SPECIALIST Java Python c# ...
SENIOR DEVELOPER - INTEGRATION SPECIALIST
  •  As member of the Integration Department team, I worked on various projects in Austria, Hungary, and Slovakia.Over time, my role evolved, and I began leading technology discovery workshops for group projects with banks.
  • Led the implementation and deployment of ESB as the main integration platform, connecting different systems through various transport and communication protocols, including old-world mainframe integration and security in banks in Hungary and Austria.
  • Development of integration solutions, SOA governance, api, tools, utilities for the banks within the Erste Group (Slovenska Sporitelna, Erste Bank Austria/Sparkasse, Erste Bank Hungary)
  • Solutions based on the Java EE, Python, Oracle FMW (WebLogic, OSB, SOASuite/BPEL/BPMN/XSLT/XQuery, Coherence, OER), API Gateway, Messaging, MQ, Software AG Entirex (Natural) Maiframes(Cobol) and other tools and frameworks, participation on research and development projects
Java Python c# Integration Enterprise Architect Oracle Oracle Fusion WebLogic Performance SQL NoSQL Teamleading Cloud Open Source IAM UML JMS XQuery XSL Maven Gradle .NET Framework LDAP Oracle Enterprise Manager Oracle ESB Shell-Script Jenkins Hudson Web 2.0 Java EE Performance Analyse SOA Oracle SOA Suite ESB API620 REST SOAP Messaging Apache Ant Enterprise Integration Patterns Secure coding
Erste Group IT Slovakia
Slovakia/Austria/Hungary
1 year 7 months
2009-01 - 2010-07

CRM solution in telecommunication

Senior Developer Java JBoss Application Server Shell-Script ...
Senior Developer
  • Development backend and infrastructure based on Java EE/JBoss frameworks and tools
Java JBoss Application Server Shell-Script Jboss stack Liferay jQuery
1 year 1 month
2008-06 - 2009-06

CRM system in telecomunication

SOA Developer Oracle SOA Suite BPEL Java ...
SOA Developer
  • Implementation of BPEL/ESB processes, for Customer Care module of T-Mobile CRM System Tower
Oracle SOA Suite BPEL Java Oracle Enterprise Manager Oracle ESB XSL XQuery WebLogic Integration
T-mobile
1 year
2007-06 - 2008-05

IT consultant for banks and insurances

Developer Java Python C#
Developer
  • As junior consultant, I started joining discovery workshops with customers, offering future solution designs, and working on different projects by implementing tools, utilities, and proof-of-concept tasks
Java Python C#
Agens consulting gmbh

Aus- und Weiterbildung

Aus- und Weiterbildung

Education:

2017 - 2019

Study field Applied Informatics

Bachelor

Faculty of Natural Sciences, University of SS. Cyril and Methodius in Trnava


Training and Certifications:

  • Oracle Certified Professional, Java SE 8 Programmer
  • Oracle Certified Associate, Java SE 8 Programmer
  • Oracle Cloud Infrastructure Foundations 2020 Certified Associate
  • (ISC)² CCSP - Certified Cloud Security Professional (Training)

Position

Position

Years of experience in architecture and full-stack development, which includes system integration with various technologies such as SOA/ESB/REST/API/Microservices/Messaging with coupled knowledge of Dev(Sec)Ops best practices.
Primary focus is on Middleware/Backend development, but also OK with Frontend/Desktop development.
Experience with cloud/on-premise/hybrid architectures and also with Identity and Access Management, projects + java/python/js/c#/ansible/nifi/W3C web standards/Apache stack, Oracle FMW/OIM/ stack and other relevant technologies.

Kompetenzen

Kompetenzen

Top-Skills

Integration Java Fullstack C# Python Web stack Oracle ESB DevOps Performance Architekt Ansible Messaging SOA UML Enterprise Architect Teamleading Front-End Open Source Container Cloud Nifi IAM

Produkte / Standards / Erfahrungen / Methoden

Summary:

I have been on professional journey since 2004, gaining valuable experience in software engineering, solution design, and architecture. Throughout my career, I have had the opportunity to work with diverse customers from industries such as telecommunications, manufacturing, banking, insurance, and the public sector in the EMEA region. Experienced in architecture and Full-stack development where my expertise is mainly in system integration utilizing technologies such as SOA, ESB, REST, API, Microservices, and Messaging. I possess strong grasp of DevOps practices, ensuring seamless software delivery. Proficient in Middleware/Backend development and adaptable to Frontend/Desktop development, I have practical experience working with cloud, on-premises, and hybrid architectures. Additionally, I have solid background in implementing and managing Identity and Access Management (IAM) solutions.


Technologic basic:

  • Mainly Java but also Python, JavaScript, C#, Bash, SQL/NoSQL, and others
  • Web/W3C Technology stack
  • Online/Offline integration vs SOA/API
  • CI/CD, Dev (Sec)Ops
  • Identity and access management
  • Oracle middleware
  • Apache stack 

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

2 years
2022-04 - now

Streaming flight data from aircraft

FULL-STACK ARCHITECT AND DEVELOPER Java Python c# ...
FULL-STACK ARCHITECT AND DEVELOPER
  • As full-stack developer, I actively participated in all layers, from frontend to low-level backend services and integrations
  • I played an integral role in evolving the architecture and the analysis of both business and technical requirements across all layers for customer-centric application solutions
  • These solutions allow customers to upload large volumes of data from aircraft black boxes or directly stream data from aircraft to a ground station for further flight processing and aircraft analysis
  • Collaborated with the DevOps and Security team to ensure the seamless deployment and operation of the solution across various environments
  • Participated in the analysis and full implementation of desktop application (as commercial product) deployed on the customer's side to process and analyze data from recorders
  • Led the technical design of various architectural strategies, proposals, and processes from development to deployment in both internal and external environments
Java Python c# Apache Cassandra MS SQL Server Spring ansible Docker Bash Windows Presentation Foundation robot framework ReactJS prometheus Grafana Enterprise Architect CMake .NET Framework Gradle Teamleading Prometheus flask conan DevSecOps Bamboo REST
Honeywell, Aerospace department
Brno/remote
1 year
2021-04 - 2022-03

Implemented and maintained authentication and authorization methods

Member of the Identity and Governance team Java Bash SQL ...
Member of the Identity and Governance team
  • As team member of the security department, I implemented and maintained authentication and authorization methods and policies based on Kerberos, LDAP, SAML, MFA, OIDC, OAuth, etc., for the central access management stack
  • Additionally, I integrated and onboarded applications to the central access management (SSO) system
  • Led the upgrade of the access management stack to the latest version and implemented first version of Dev(Sec)Ops solution
Java Bash SQL Ansible JavaScript Oracle Identity and Access Management web stack security stack CI/CD Dev(Sec)Ops Gitlab
Central Bank
Frankfurt, Germany
2 years 2 months
2019-02 - 2021-03

Implementing the central integration batch platform in bank

Full-stack architect and developer Java C# Bash ...
Full-stack architect and developer
  • Served as Full-stack architect and developer, implementing the central integration batch platform based on Apache NiFi
  • Led the design and development of simplified UML methodology that enables the modeling of integration flows with minimal programming skills and day-to-day management
  • Designed and implemented extensions for generating integration flows from Sparx Enterprise Architect to Apache NiFi, with deployment across environments based on DevOps principles
  • Participated in the analysis and implementation of various tools and utilities to support daily operations and maintenance of integration solutions
Java C# Bash Python SQL/NoSQL Angular Spring UML Apache NiFi messaging web stack Ansible Nifi SQL Enterprise Architect Integration Gitlab Kafka Infrastructure as a Service PL/SQL
Bank
Bratislava, Slovakia 
5 months
2020-08 - 2020-12

Implementation and deployment of the central Single Sign-On (SSO)

Full-stack architect and developer for SSO Java Bash Oracle Identity and Access Management ...
Full-stack architect and developer for SSO
  • Responsible for the implementation and deployment of the central Single Sign-On (SSO) solution for the core banking system
Java Bash Oracle Identity and Access Management web stack WebLogic Oracle Identity Management Java EE
Bank
Bratislava, Slovakia
5 months
2020-05 - 2020-09

Responsible for upgrading the Oracle Identity stack

Team member for upgrade OIM 9g TO 12c Java Oracle Identity and Access Management
Team member for upgrade OIM 9g TO 12c

Java Oracle Identity and Access Management
Insurance
Prague, Czech Republic
5 months
2018-10 - 2019-02

Single Sign-On (SSO) integration

Full-stack OAM developer Java Spring Oracle Identity and Access Management ...
Full-stack OAM developer
  • Led as Full-stack analyst and developer for Single Sign-On (SSO) integration, using central instance of OAM 12c across multiple environments
  • Implemented custom multi-factor authentication and authorization methods for various workflows
  • Prepared the initial analysis for the upcoming OIM implementation
Java Spring Oracle Identity and Access Management Red Hat Middleware web stack LDAP RSA security stack JBoss Application Server Java EE
Merchant services
Bratislava, Slovakia
1 month
2018-12 - 2018-12

Identify technical bottlenecks and address performance issues

Performance analyst Java Oracle Fusion Middleware Hazelcast ...
Performance analyst

Java Oracle Fusion Middleware Hazelcast Linux network infrastructure
Insurance
Bratislava, Slovakia
1 month
2018-09 - 2018-09

Implemented validators for the national E-health system (CEZIH)

Member of team for E-HEALT (CEZIH) Java ESB Axway API Gateway ...
Member of team for E-HEALT (CEZIH)

Java ESB Axway API Gateway XQuery XSLT
Private customer
Zagreb, Croatia
8 months
2018-01 - 2018-08

Specialized in security and performance for an existing solution

System performance analyst Java Oracle Fusion Middleware Oracle Identity and Access Management ...
System performance analyst
  • Specialized in security and performance for an existing solution deployed in production, providing analyses for the implementation of various methods of authentication and authorization
  • Performed performance analysis, identified bottlenecks, and offered solutions for JVM, application stack, LDAPs, and API Gateway
Java Oracle Fusion Middleware Oracle Identity and Access Management LDAP web stack Security stack SQL NoSQL Linux virtualization infrastructure Performance Analyse Access Gateway
Public sector
Bratislava, Slovakia
6 months
2017-07 - 2017-12

Implemented SOA and BPM processes

Principal consultant Java Oracle Fusion Middleware Stack SOA ...
Principal consultant
  • Implemented SOA and BPM processes, worked as Full-stack developer for CI/CD in these areas, and successfully resolved performance bottlenecks across various application layers
Java Oracle Fusion Middleware Stack SOA CI/CD
Banks and Insurances
Bratislava, Slovakia
7 years
2010-07 - 2017-06

Integration

SENIOR DEVELOPER - INTEGRATION SPECIALIST Java Python c# ...
SENIOR DEVELOPER - INTEGRATION SPECIALIST
  •  As member of the Integration Department team, I worked on various projects in Austria, Hungary, and Slovakia.Over time, my role evolved, and I began leading technology discovery workshops for group projects with banks.
  • Led the implementation and deployment of ESB as the main integration platform, connecting different systems through various transport and communication protocols, including old-world mainframe integration and security in banks in Hungary and Austria.
  • Development of integration solutions, SOA governance, api, tools, utilities for the banks within the Erste Group (Slovenska Sporitelna, Erste Bank Austria/Sparkasse, Erste Bank Hungary)
  • Solutions based on the Java EE, Python, Oracle FMW (WebLogic, OSB, SOASuite/BPEL/BPMN/XSLT/XQuery, Coherence, OER), API Gateway, Messaging, MQ, Software AG Entirex (Natural) Maiframes(Cobol) and other tools and frameworks, participation on research and development projects
Java Python c# Integration Enterprise Architect Oracle Oracle Fusion WebLogic Performance SQL NoSQL Teamleading Cloud Open Source IAM UML JMS XQuery XSL Maven Gradle .NET Framework LDAP Oracle Enterprise Manager Oracle ESB Shell-Script Jenkins Hudson Web 2.0 Java EE Performance Analyse SOA Oracle SOA Suite ESB API620 REST SOAP Messaging Apache Ant Enterprise Integration Patterns Secure coding
Erste Group IT Slovakia
Slovakia/Austria/Hungary
1 year 7 months
2009-01 - 2010-07

CRM solution in telecommunication

Senior Developer Java JBoss Application Server Shell-Script ...
Senior Developer
  • Development backend and infrastructure based on Java EE/JBoss frameworks and tools
Java JBoss Application Server Shell-Script Jboss stack Liferay jQuery
1 year 1 month
2008-06 - 2009-06

CRM system in telecomunication

SOA Developer Oracle SOA Suite BPEL Java ...
SOA Developer
  • Implementation of BPEL/ESB processes, for Customer Care module of T-Mobile CRM System Tower
Oracle SOA Suite BPEL Java Oracle Enterprise Manager Oracle ESB XSL XQuery WebLogic Integration
T-mobile
1 year
2007-06 - 2008-05

IT consultant for banks and insurances

Developer Java Python C#
Developer
  • As junior consultant, I started joining discovery workshops with customers, offering future solution designs, and working on different projects by implementing tools, utilities, and proof-of-concept tasks
Java Python C#
Agens consulting gmbh

Aus- und Weiterbildung

Aus- und Weiterbildung

Education:

2017 - 2019

Study field Applied Informatics

Bachelor

Faculty of Natural Sciences, University of SS. Cyril and Methodius in Trnava


Training and Certifications:

  • Oracle Certified Professional, Java SE 8 Programmer
  • Oracle Certified Associate, Java SE 8 Programmer
  • Oracle Cloud Infrastructure Foundations 2020 Certified Associate
  • (ISC)² CCSP - Certified Cloud Security Professional (Training)

Position

Position

Years of experience in architecture and full-stack development, which includes system integration with various technologies such as SOA/ESB/REST/API/Microservices/Messaging with coupled knowledge of Dev(Sec)Ops best practices.
Primary focus is on Middleware/Backend development, but also OK with Frontend/Desktop development.
Experience with cloud/on-premise/hybrid architectures and also with Identity and Access Management, projects + java/python/js/c#/ansible/nifi/W3C web standards/Apache stack, Oracle FMW/OIM/ stack and other relevant technologies.

Kompetenzen

Kompetenzen

Top-Skills

Integration Java Fullstack C# Python Web stack Oracle ESB DevOps Performance Architekt Ansible Messaging SOA UML Enterprise Architect Teamleading Front-End Open Source Container Cloud Nifi IAM

Produkte / Standards / Erfahrungen / Methoden

Summary:

I have been on professional journey since 2004, gaining valuable experience in software engineering, solution design, and architecture. Throughout my career, I have had the opportunity to work with diverse customers from industries such as telecommunications, manufacturing, banking, insurance, and the public sector in the EMEA region. Experienced in architecture and Full-stack development where my expertise is mainly in system integration utilizing technologies such as SOA, ESB, REST, API, Microservices, and Messaging. I possess strong grasp of DevOps practices, ensuring seamless software delivery. Proficient in Middleware/Backend development and adaptable to Frontend/Desktop development, I have practical experience working with cloud, on-premises, and hybrid architectures. Additionally, I have solid background in implementing and managing Identity and Access Management (IAM) solutions.


Technologic basic:

  • Mainly Java but also Python, JavaScript, C#, Bash, SQL/NoSQL, and others
  • Web/W3C Technology stack
  • Online/Offline integration vs SOA/API
  • CI/CD, Dev (Sec)Ops
  • Identity and access management
  • Oracle middleware
  • Apache stack 

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