Senior Java / Angular Full-Stack Engineering focused on delivering impactful, scalable full-stack Java-based solutions.
Aktualisiert am 06.05.2025
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 06.05.2025
Verfügbar zu: 100%
davon vor Ort: 10%
Java
Angular
Java EE
Spring
Ngrx
Hibernate
gRPC
REST
GCP
AWS
yFiles
TypeScript
React
Spring Boot
Cypress
Gradle
Maven
Ansible
Kotlin
English
Proficient
German
Fortgeschritten
Romanian
Muttersprache

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

2 years 9 months
2022-03 - 2024-11

Implementing visual regression testing

Senior Java Full-Stack Engineer Angular 11-18 NX 18 NGRX ...
Senior Java Full-Stack Engineer

The client, active in leisure, travel and tourism areas, was not able to get new contracts because of the old design of the application, and was constantly losing money because of hard to maintain code.

  • Improved quality and reduced maintenance costs by implementing visual regression testing for all applications.
  • Boosted user satisfaction by 80% by modernize the look and feel and by improving speed of the contracting application.

Angular 11-18 NX 18 NGRX RXJS 7 Cypress AWS Bootstrap 5 HTML 5 CSS Jest Jenkins CI/CD Git GitLab
TUI Group
6 months
2021-10 - 2022-03

Developing a system

Senior Java Full-Stack Engineer Spring boot Hibernate GCP ...
Senior Java Full-Stack Engineer

The client, well known for quick commerce, wasted a lot of time and money investigating and answering questions about products and their changes.

  • Enhanced Product Traceability by developing a system enabling external users to track product history, reducing time and cost spent on inquiries about price or status changes.
  • Data Analytics Enablement by providing the analytics team with access to historical data for analyzing active status updates, failed orders, and integration performance, driving data-driven decisions.

Spring boot Hibernate GCP PubSub Protobuf PostgreSQL Docker Terraform Helm Ingres Lens Kubernetes Spinnaker Gradle Kotlin React
Delivery Hero
2 years 4 months
2019-08 - 2021-11

Designing and Implementing an efficient scalable system

Senior Java Full-Stack Engineer (Technical Lead) Java 11 Spring Spring boot ...
Senior Java Full-Stack Engineer (Technical Lead)

The client, one of the biggest automotive players in the world, was struggling with a slow process and lack of performance when designing the electric system for a new car, due to a very complex business logic that was mapped to an inefficient process requiring constant repetitive work.

  • Reduced the electric system planning time from 52 to less than 12 weeks and saved more than ?2.8M yearly by designing and implementing an efficient scalable system, based on service-based architecture.
  • Eliminated losses amounting to over ?1.9M/year and reduced the rendering time of a graph from 2 minutes to 5 ms by leading a highly skilled team into developing a custom-tailored solution by creating a 2D viewer, with a highly-efficient wire routing algorithm.

Java 11 Spring Spring boot Angular 8 NGXS CSS yFiles REST OpenAPI Swagger PostgreSQL
msg system Romania
1 year 2 months
2018-07 - 2019-08

Splitting the monolith into microservices

Senior Java Full-Stack Engineer Java 8 Java EE Tomcat ...
Senior Java Full-Stack Engineer

The client, an important German automotive manufacturer, was wasting significant revenue on maintenance for a slow unscalable monolithic application but was unable to give it up due to the exponential increase of important data it was processing.

  • Completely eliminated yearly expenses of over ?2.3M and increased the scalability and performance by 600% by splitting the monolith into microservices by orchestrating and deploying them to the cloud.

Java 8 Java EE Tomcat Payara Micro REST Ansible Linux Elasticsearch ExtJs Zookeeper
msg system Romania
2 years 6 months
2016-02 - 2018-07

Redesigning the quality management system

Senior Java Full-Stack Engineer Java 8 Java EE Typescript ...
Senior Java Full-Stack Engineer

The client, a renewed automobile constructor, was dealing with a terrible user experience was losing a huge amount of money yearly due to still using a very old supplier quality management system that grew into a monolithic application.

  • Assured 100% scalability, efficiency, and functionality of the product by fully redesigning the quality management system according to the customer?s needs by splitting the monolith into a service-based architecture, by employing domain, based on REST services.
  • Decreased delivery time by 2 months and secured a good relationship with the client by leading the team at an efficient quick pace while keeping them motivated.

Java 8 Java EE Typescript Dojo1 REST OpenAPI Swagger Microprofile JBoss Liquibase Maven Node.js
msg system Romania
3 years 1 month
2013-02 - 2016-02

Implementing a Radiology Information System

Software Java Engineer Java 6 JSF Oracle ADF (ADF BC / ADF Faces) ...
Software Java Engineer

The client , active in the healthcare industry, was constantly losing clients and was unable to acquire new ones due to slow services and lacking automation in daily processes.

  • Increased the number of patients by over 25% by implementing a Radiology Information System to manage the reports created by radiologists by employing an end-to-end application framework to enable the management of the entire lifecycle of a report.

Java 6 JSF Oracle ADF (ADF BC / ADF Faces) HTTPS Jersey Log4j Ant JDeveloper JOOQ Perforce Rally DOORS Crucible
GE Healthcare
1 year 8 months
2011-07 - 2013-02

Implementing an intelligent tailor-made planning software

Software Java Engineer client desktop (RCP/SWT/Swing/Gantt) web (JSP/JS - JQuery/JSON) server ...
Software Java Engineer

The client, managing 10 important European railway companies, was in constant danger of getting fined due to being unable to avoid constant delays and irregularities in the trains schedule.

  • Avoided 100% of financial losses by implementing an intelligent tailor-made planning software for the railway industry by adding a decision support tool for finding the optimal solution in the planning process.

client desktop (RCP/SWT/Swing/Gantt) web (JSP/JS - JQuery/JSON) server RMI spring integration WS/JAXB/SoapUI XML/XSD/XPath/XQuery security based on JAAS/SpringSecurity reporting (JasperReports) persistence (Kodo/Oracle) jobs scheduling (Jetty/Quartz)
IQuest

Aus- und Weiterbildung

Aus- und Weiterbildung

2011 ? 2013

Technical University

Master in Computer Science

Cluj-Napoca


2007 ? 2011

Technical University

Bachelor in Computer Science

Cluj-Napoca

Kompetenzen

Kompetenzen

Top-Skills

Java Angular Java EE Spring Ngrx Hibernate gRPC REST GCP AWS yFiles TypeScript React Spring Boot Cypress Gradle Maven Ansible Kotlin

Produkte / Standards / Erfahrungen / Methoden

ABOUT ME

  • I am a senior Java Full-Stack engineer / contractor / freelancer with 13+ years of experience. 
  • I help clients around the world to achieve their goals by designing and implementing clean software solutions.
  • Do you need software solutions for your business? Let?s connect!


SKILLS

  • Java
  • JavaEE
  • SQL
  • Spring
  • NodeJs
  • Angular
  • Typescript
  • HTML 5
  • CSS 3
  • Javascript

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

2 years 9 months
2022-03 - 2024-11

Implementing visual regression testing

Senior Java Full-Stack Engineer Angular 11-18 NX 18 NGRX ...
Senior Java Full-Stack Engineer

The client, active in leisure, travel and tourism areas, was not able to get new contracts because of the old design of the application, and was constantly losing money because of hard to maintain code.

  • Improved quality and reduced maintenance costs by implementing visual regression testing for all applications.
  • Boosted user satisfaction by 80% by modernize the look and feel and by improving speed of the contracting application.

Angular 11-18 NX 18 NGRX RXJS 7 Cypress AWS Bootstrap 5 HTML 5 CSS Jest Jenkins CI/CD Git GitLab
TUI Group
6 months
2021-10 - 2022-03

Developing a system

Senior Java Full-Stack Engineer Spring boot Hibernate GCP ...
Senior Java Full-Stack Engineer

The client, well known for quick commerce, wasted a lot of time and money investigating and answering questions about products and their changes.

  • Enhanced Product Traceability by developing a system enabling external users to track product history, reducing time and cost spent on inquiries about price or status changes.
  • Data Analytics Enablement by providing the analytics team with access to historical data for analyzing active status updates, failed orders, and integration performance, driving data-driven decisions.

Spring boot Hibernate GCP PubSub Protobuf PostgreSQL Docker Terraform Helm Ingres Lens Kubernetes Spinnaker Gradle Kotlin React
Delivery Hero
2 years 4 months
2019-08 - 2021-11

Designing and Implementing an efficient scalable system

Senior Java Full-Stack Engineer (Technical Lead) Java 11 Spring Spring boot ...
Senior Java Full-Stack Engineer (Technical Lead)

The client, one of the biggest automotive players in the world, was struggling with a slow process and lack of performance when designing the electric system for a new car, due to a very complex business logic that was mapped to an inefficient process requiring constant repetitive work.

  • Reduced the electric system planning time from 52 to less than 12 weeks and saved more than ?2.8M yearly by designing and implementing an efficient scalable system, based on service-based architecture.
  • Eliminated losses amounting to over ?1.9M/year and reduced the rendering time of a graph from 2 minutes to 5 ms by leading a highly skilled team into developing a custom-tailored solution by creating a 2D viewer, with a highly-efficient wire routing algorithm.

Java 11 Spring Spring boot Angular 8 NGXS CSS yFiles REST OpenAPI Swagger PostgreSQL
msg system Romania
1 year 2 months
2018-07 - 2019-08

Splitting the monolith into microservices

Senior Java Full-Stack Engineer Java 8 Java EE Tomcat ...
Senior Java Full-Stack Engineer

The client, an important German automotive manufacturer, was wasting significant revenue on maintenance for a slow unscalable monolithic application but was unable to give it up due to the exponential increase of important data it was processing.

  • Completely eliminated yearly expenses of over ?2.3M and increased the scalability and performance by 600% by splitting the monolith into microservices by orchestrating and deploying them to the cloud.

Java 8 Java EE Tomcat Payara Micro REST Ansible Linux Elasticsearch ExtJs Zookeeper
msg system Romania
2 years 6 months
2016-02 - 2018-07

Redesigning the quality management system

Senior Java Full-Stack Engineer Java 8 Java EE Typescript ...
Senior Java Full-Stack Engineer

The client, a renewed automobile constructor, was dealing with a terrible user experience was losing a huge amount of money yearly due to still using a very old supplier quality management system that grew into a monolithic application.

  • Assured 100% scalability, efficiency, and functionality of the product by fully redesigning the quality management system according to the customer?s needs by splitting the monolith into a service-based architecture, by employing domain, based on REST services.
  • Decreased delivery time by 2 months and secured a good relationship with the client by leading the team at an efficient quick pace while keeping them motivated.

Java 8 Java EE Typescript Dojo1 REST OpenAPI Swagger Microprofile JBoss Liquibase Maven Node.js
msg system Romania
3 years 1 month
2013-02 - 2016-02

Implementing a Radiology Information System

Software Java Engineer Java 6 JSF Oracle ADF (ADF BC / ADF Faces) ...
Software Java Engineer

The client , active in the healthcare industry, was constantly losing clients and was unable to acquire new ones due to slow services and lacking automation in daily processes.

  • Increased the number of patients by over 25% by implementing a Radiology Information System to manage the reports created by radiologists by employing an end-to-end application framework to enable the management of the entire lifecycle of a report.

Java 6 JSF Oracle ADF (ADF BC / ADF Faces) HTTPS Jersey Log4j Ant JDeveloper JOOQ Perforce Rally DOORS Crucible
GE Healthcare
1 year 8 months
2011-07 - 2013-02

Implementing an intelligent tailor-made planning software

Software Java Engineer client desktop (RCP/SWT/Swing/Gantt) web (JSP/JS - JQuery/JSON) server ...
Software Java Engineer

The client, managing 10 important European railway companies, was in constant danger of getting fined due to being unable to avoid constant delays and irregularities in the trains schedule.

  • Avoided 100% of financial losses by implementing an intelligent tailor-made planning software for the railway industry by adding a decision support tool for finding the optimal solution in the planning process.

client desktop (RCP/SWT/Swing/Gantt) web (JSP/JS - JQuery/JSON) server RMI spring integration WS/JAXB/SoapUI XML/XSD/XPath/XQuery security based on JAAS/SpringSecurity reporting (JasperReports) persistence (Kodo/Oracle) jobs scheduling (Jetty/Quartz)
IQuest

Aus- und Weiterbildung

Aus- und Weiterbildung

2011 ? 2013

Technical University

Master in Computer Science

Cluj-Napoca


2007 ? 2011

Technical University

Bachelor in Computer Science

Cluj-Napoca

Kompetenzen

Kompetenzen

Top-Skills

Java Angular Java EE Spring Ngrx Hibernate gRPC REST GCP AWS yFiles TypeScript React Spring Boot Cypress Gradle Maven Ansible Kotlin

Produkte / Standards / Erfahrungen / Methoden

ABOUT ME

  • I am a senior Java Full-Stack engineer / contractor / freelancer with 13+ years of experience. 
  • I help clients around the world to achieve their goals by designing and implementing clean software solutions.
  • Do you need software solutions for your business? Let?s connect!


SKILLS

  • Java
  • JavaEE
  • SQL
  • Spring
  • NodeJs
  • Angular
  • Typescript
  • HTML 5
  • CSS 3
  • Javascript

Vertrauen Sie auf Randstad

Im Bereich Freelancing
Im Bereich Arbeitnehmerüberlassung / Personalvermittlung

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Rufen Sie uns an +49 89 500316-300 oder schreiben Sie uns:

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