Softwarearchitekt, Software-Engineer, Cloud
Aktualisiert am 05.01.2025
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 01.02.2025
Verfügbar zu: 100%
davon vor Ort: 100%
Java
Go
AWS
Kotlin
Rust
Softwarearchitektur
Hibernate
Kafka
Mongo DB
Spring
SQL
REST
Git
Docker
TDD
JPA
Gradle
Kubernetes
GraphQL
Spring Boot
Svelte
CI/CD
React
English
business fluent
German
native language

Einsatzorte

Einsatzorte

Berlin (+50km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

6 Monate
2024-07 - heute

Feature Development for Zalando Customs Platform

Senior Java/Kotlin Engineer Kotlin Java Spring Boot ...
Senior Java/Kotlin Engineer
Reduce costs for customs declarations classifications
Design and implement an algorithm that reduces costs for classifying goods sent to 3rd
party KI provider.

https://www.zalando.de


Implement Service for Bonded Warehouse

Design and implementation of services for handling transports in EU.


Kotlin Java Spring Boot AWS Kubernetes Hibernate Git SQL Postgres REST Docker Microservices Messaging Gradle JUnit Mockito WireMock
Zalando SE
Berlin/Remote
11 Monate
2024-02 - 2024-12

Implementing Backend and Copy Protection for Galakto Audio Player

Software-Architect/Software-Engineer/IT-Consultant Go (Golang) Svelte TypeScript ...
Software-Architect/Software-Engineer/IT-Consultant
New Media Exchange Service
Definition of architecture, designing and implementing a new service using AWS cloud for
handling partners and large media data transfers.
https://galakto.com

New Partner-Portal
Designing and implementing a new portal for dealing with partners and large media data for Galakto audio tokens.

New Admin-Portal
Designing and implementing a new admin portal for managing partners and large media
data for Galakto audio tokens.

Designing and Implementing Copy Protection for Audio Tokens

Digital Signatures for Galakto Audio Tokens. Consulting for applying Public-Key Cryptography to ensure data origin and consistency.


Go (Golang) Svelte TypeScript Javascript Postgres SQL Docker AWS REST OpenAPI JWT HTML CSS Git GitHub Actions Golang Cloud Architecture Terraform ECS Fargate S3 AWS- SSM Route53 LoadBalancer Public-key cryptography PKI Digital Signature
Tiny Monster GmbH
Berlin/Remote
9 Monate
2023-10 - 2024-06

Migration to Rust and Feature Development

Fullstack Kotlin & Rust Engineer Rust Kotlin Java ...
Fullstack Kotlin & Rust Engineer
Feature Development in microservice architecture
https://www.otto.de/

Migration to Rust
Migration of various components to Rust to reduce costs and increase performance.

AWS
Rust Kotlin Java Spring Boot TypeScript Terraform Redis/ElastiCache Kafka AWS S3 Lambda SQS MongoDB DynamoDB Microservices REST HTML Javascript Thymeleaf JUnit Mockito ECS
Otto GmbH
Hamburg/Remote
6 Monate
2023-04 - 2023-09

New Features for Shopping Basket App

Senior Fullstack Engineer Golang Postgres S3 ...
Senior Fullstack Engineer
New Features for Shopping Basket AppNew Features for Shopping Basket
Implementing new features in microservice architecture environment.
https://www.deutschebahn.com/de/konzern/konzernprofil/Konzernunternehmen/
dbfernverkehr-6879486

Storage System for Big Data
Evaluation of AWS Glacier storage options and Postgres capabilities for big data and
implementing solution.
AWS
Golang Postgres S3 Docker AWS Microservices Rest Glacier Java Kotlin Spring Boot JUnit Mockito
DB Fernverkehr AG
Remote
4 Jahre 1 Monat
2019-05 - 2023-05

Architecture and Development of Online Service for Freelancers

Fullstack GoLang Software Engineer / Architect Go Gin React ...
Fullstack GoLang Software Engineer / Architect
Online Service for freelancers - setup infrastructure
Design a web portal for supporting freelancers. Create backend infrastructure in the cloud,
set up build pipeline and continuous deployment. Implement user management and
corresponding flows (e.g. registration).

Online Service for freelancers - time tracking and invoicing
Define architecture, design and implement time tracking and invoicing.

Online Service for freelancers - profile generation and CRM
Design and implement service for generating profiles for freelancers and customer
relationship management.

AWS Docker
Go Gin React TypeScript AWS RDS AWS Aurora S3 KMS Encryption CDK Docker MySQL REST OpenAPI Bootstrap HTML CSS DroneIO
Code Artist UG
Berlin
7 Monate
2022-09 - 2023-03

New backend infrastructure for dealing with carbon credits persisted on blockchain

Go (Golang) Fullstack Engineer / Consultant Golang Gin Ginkgo ...
Go (Golang) Fullstack Engineer / Consultant
New backend infrastructure for dealing with carbon credits persisted on blockchain
Definition of architecture, interfaces and data flows. Implementation of backend
microservices that handle blockchain data for carbon credits and provide consumer facing
API.
https://www.atem.green

Service security architecture

Designing and implementing token based authentication and roles- and permission concept to meet special customer requirements. Providing a consumer facing API.

New search service for projects tokens
Aggregation of different sources using GraphQL.

New service for users and accounts
Designing and implementing microservice and infrastructure for maintaining accounts and
users tailored to meet special requirements. Implementing various flows for user handling
by leveraging SendGrid.

AWS Sendgrid
Golang Gin Ginkgo MicroService Docker AWS CDK TypeScript ECS Fargate GraphQL REST OpenAPI Postgres JWT Go (Golang) SendGrid
Atem Development GmbH (Climate Startup)
Berlin/Remote
6 Monate
2022-03 - 2022-08

Feature Development for Customs Platform

Senior Java/Kotlin Software Engineer Kotlin Java Spring Boot ...
Senior Java/Kotlin Software Engineer
Shipment Tours for Customs
Implementing new features in a microservice architecture for shipment tours for customs.

Currency transition for export/import countries for customs
Refactoring components, Testing with other teams

Observability for Microservices
Instrumenting Microservices to create telemetry data

Data for enabling customs declarations for a new country
Define data format, create exporter and provide data for 3rd party customs service provider
(Python, Java)
AWS
Kotlin Java Spring Boot AWS Kubernetes Docker Postgres OpenAPI REST Kanban JUnit Mockito OpenTelemetry LightStep
Zalando SE
Remote
5 Monate
2021-11 - 2022-03

Extending TUI Platform

Senior Java Architekt/ Engineer Java Spring Boot Typescript ...
Senior Java Architekt/ Engineer
Federated API for Accommodations
Design and implementation of federated API for accommodations using GraphQL with
Apollo Federation and mircoservices, drive architectural solutions and decisions, present
results to stakeholders, introduce global types de facto standard to accommodation
service

Accommodation Manager Application
Create web application for maintaining accommodations

Data analysis
Analyzing data from different sources using Python

Common Platform for Content about Accommodations
Building and extending Microservices for creating a new platform for accommodation
content.
AWS Kubernetes Docker Postgres Apollo Federation
Java Spring Boot Typescript GraphQL Apollo Federation AWS CDK ECS EKS Docker Kubernetes Postgres SNS SQS JUnit Mockito React NodeJS Jest HTML CSS Storybook OpenAPI Go Python
TUI InfoTec GmbH
Hannover/Remote
11 Monate
2020-11 - 2021-09

User Identity Services

Java Fullstack Engineer Kotlin Java Spring Boot ...
Java Fullstack Engineer
  • migration of existing monolithic services to new microservice architecture in AWS
  • investigation/analysis of technologies in AWS for new stack
  • service for verification of customers using Otto Online Shop
MongoDB DynamoDB
Kotlin Java Spring Boot AWS Gradle Encryption Cloud Formation Scrum Micro Services REST HTML CSS SCSS Docker Docker Compose Github Actions HTML5 Microservices
Otto GmbH
Hamburg/Remote
10 Monate
2020-01 - 2020-10

Development ePost Platform

Senior Software Engineer (Freelancer) RESTful Services Java Groovy ...
Senior Software Engineer (Freelancer)

Development of new and existing projects based on the ePost platform

RESTful Services Java Groovy Spring Boot Hibernate Gradle Maven Oracle JUnit Spock Vagrant Quartz Encryption DKIM-Signature Puppet Kotlin DKIM
Deutsche Post IT Services GmbH
Berlin
4 Monate
2019-09 - 2019-12

Fraud Management Tools

Senior Fullstack Engineer Scrum Java Groovy ...
Senior Fullstack Engineer

Fraud Management Tools

Development and maintenance of existing infrastructure (Java, Groovy, Spring Boot, AWS Cloud, Docker, Gradle, PostgreSQL, JUnit, RESTful Service)

Authentication system migration

Switch internal tool to a new single sign on service (Java, Spring Boot, SAML, Single Sign On using Okta)

Integration risk assessment service

Integration of risk bureau service into internal tool for different countries (Java, Groovy, Spring Boot, RESTful Service)

Scrum Java Groovy Spring Boot AWS Cloud Docker Gradle PostgreSQL JUnit RESTful Service SAML Okta
KLARNA GMBH BERLIN / STOCKHOLM (FREELANCER)
Berlin/Stockholm/remote
1 Jahr 5 Monate
2018-04 - 2019-08

Car trading platform

SENIOR BACKEND ENGINEER
SENIOR BACKEND ENGINEER

Car trading platform

Development of microservice architecture for different countries (Java, Spring, Gradle, Karate, BDD, MongoDB, Hibernate, MySQL, JWT, RESTful Service, KeyCloak, Swagger/OpenAPI, Docker, JUnit, Wiremock)

Application for managing merchants

(Java, Spring, Gradle, MongoDB, JWT, RESTful Service, KeyCloak, Swagger/OpenAPI, Docker, JUnit, Wiremock)

EBAY / MOBILE.DE
5 Jahre 3 Monate
2013-01 - 2018-03

PayPal Working Capital

LEAD-DEVELOPER
LEAD-DEVELOPER

PayPal Working Capital

Portal extension for merchant loans for german market  (Java, JavaScript, AngularJS, NodeJS, KrakenJS, Jasmine, Grunt, REST)

Working Capital Administration Tool

Application for managing merchant loans (JavaScript, AngularJS, NodeJS, KrakenJS, Single Sign On, Jasmine, Grunt)

PayPal Plus

Generic solution for integrating wallet with different payment providers into shop pages  (JavaScript, NodeJS, KrakenJS, Jasmine, Grunt, REST)

Component Testing Tool

Development of a tool to test microservices in PayPal infrastructure and presentation to teams in USA. (Java, Maven, JSON, REST, Oracle)

PayPal Rechnungskauf

Realisierung eines REST-Services in Microservice Architektur  (PHP, Phing, REST, JSON)

PayPal Payment Checkout

Umsetzung verschiedener Anforderungen zum PayPal Checkout (JavaScript, AngularJS, NodeJS)

PAYPAL BERLIN / SAN JOSÉ (USA)
8 Monate
2012-06 - 2013-01

Integration payment provider BillSAFE

SENIOR-SOFTWARE ENGINEER Java Spring Oracle ...
SENIOR-SOFTWARE ENGINEER
  • Utilizing PayPal risk engine in BillSAFE
Java Spring Oracle Stored Procedures Blaze Rule Engine PHP MySQL
PAYPAL
5 Jahre 1 Monat
2007-05 - 2012-05

Portals for Publishers

SENIOR-SOFTWARE ENGINEER CAS JSP Maven ...
SENIOR-SOFTWARE ENGINEER

Development of new CMS for a big publishing company for pharmacy magazines

CMS for managing different portals (Java, Grails, Groovy, CAS, SEO)

Community functionality for CMS for a big publishing company Development of new community functionality based on Enterprise CMS “First Spirit” (Java, JSP, HTML, Maven, First-Spirit, Single Sign On)

Job portal

Relaunch and feature development (Java, Spring, Spring Security, Spring Webflow, JSP, SOAP, HTML, CSS)

Doctor portal

Relaunch and feature development (Grails, Groovy, Hibernate, MySQL, HTML, CSS, JavaScript, SEO)

CAS JSP Maven First-Spirit Single Sign On Java Spring Spring Security Spring Webflow JSP SOAP Grails Hibernate MySQL HTML CSS JavaScript SEO
NEOFONIE GMBH
2 Jahre 4 Monate
2005-02 - 2007-05

Electronic patient file (?Elektronische Patientenakte?)

SOFTWARE ENGINEER Java Spring Spring Security ...
SOFTWARE ENGINEER

Registry for doctor’s offices (“Praxisregister”)

(Java, Spring, Spring Webflow, Spring Security, Hibernate, MySQL)

XML-Interfaces for medical documentation

(Java, XML)

Java Spring Spring Security Hibernate MySQL Apache JackRabbit MagicDraw Eclipse RCP
TeveGe mbH
2 Monate
2004-07 - 2004-08

Further analysis of software for creating and maintaining XML- Interfaces

Trainee XML UML Java ...
Trainee
  • development of a prototype for presentation
XML UML Java JavaScript CSS HTML
Kassenärztliche Bundesvereinigung
3 Monate
2004-03 - 2004-05

Analysis and planning of software for creating and maintaining XML-Interfaces

Trainee XML UML
Trainee
XML UML
Kassenärztliche Bundesvereinigung
5 Monate
2002-10 - 2003-02

Development of components for medical software

Trainee C++ DLLs
Trainee
  • Development of modules as DLLs for Windows
C++ DLLs
Metitur Oy, Finnland

Aus- und Weiterbildung

Aus- und Weiterbildung

2000 - 2005

DIPLOMA COMPUTER SCIENCE

University of Applied Sciences Zwickau (FH)

1996 - 1999

HIGH SCHOOL

High School of Technology Erdmann Kircheis, Aue

Final grade: 1,9

CERTIFICATIONS

  • AWS Certified Developer Associate
  • Spring Web Application Developer
  • Oracle Certified Expert, Java EE 6 Web Component Developer
  • Oracle Certified Professional Java Programmer
  • Certified Scrum Master

Position

Position

I am working as Software-Engineer and Software-Architekt in the cloud environment.

Kompetenzen

Kompetenzen

Top-Skills

Java Go AWS Kotlin Rust Softwarearchitektur Hibernate Kafka Mongo DB Spring SQL REST Git Docker TDD JPA Gradle Kubernetes GraphQL Spring Boot Svelte CI/CD React

Produkte / Standards / Erfahrungen / Methoden

AWS
AWS Cloud
AWS Lambda
CAS
Cloud Formation
CSS
DKIM-Signature
Docker
Encryption
First-Spirit
Gradle
Grails
Hibernate
JUnit
Maven
Okta
Puppet
Quartz
RESTful Service
RESTful Services
SAML
Scrum
SCSS
SEO
Single Sign On
SOAP
Spock
Spring
Spring Boot
Spring Security
Spring Webflow
Vagrant

FOCUS

Java, Spring, Spring Boot, GO, Microservices, REST, Architecture

STORAGES:

MySQL, PostgreSQL, MongoDB, Oracle, H2, Kafka, Redis, Apache JackRabbit

CLOUD / CONTAINER / APP-SERVER:

Docker, AWS Cloud, Apache Tomcat, Jetty, Glassfish, Kubernetes, Helm, Minikube

TEST- / BUILD-TOOLS:

JUnit, TestNG, Mockito, Maven, Gradle, Ant, Wiremock, Powermock, Jenkins, SoapUI, JMeter, Sinon, Mocha, Jasmine, Grunt, Spock

IDEs:

IntelliJ Idea, Data Grid, Webstorm, Goland, PhpStorm, Eclipse, NetBeans, Delphi, Borland C++ Builder

AGILE WORK ENVIRONMENT:

Kanban, Scrum

OTHER:

Continuous Integration, Continuous Delivery, Continuous Deployment, TDD, BDD, JIRA, Confluence, Rally, GitHub, BitBucket

Betriebssysteme

Android
Linux
Mac
Windows

Programmiersprachen

C++
Delphi
GO
Groovy
HTML
HTML5
Java
JavaScript
JSP
Kotlin
PHP
SQL
XML

Datenbanken

DynamoDB
MongoDB
MySQL
Oracle
PostgreSQL

Datenkommunikation

DKIM
Messaging
Micro Services
REST

Einsatzorte

Einsatzorte

Berlin (+50km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

6 Monate
2024-07 - heute

Feature Development for Zalando Customs Platform

Senior Java/Kotlin Engineer Kotlin Java Spring Boot ...
Senior Java/Kotlin Engineer
Reduce costs for customs declarations classifications
Design and implement an algorithm that reduces costs for classifying goods sent to 3rd
party KI provider.

https://www.zalando.de


Implement Service for Bonded Warehouse

Design and implementation of services for handling transports in EU.


Kotlin Java Spring Boot AWS Kubernetes Hibernate Git SQL Postgres REST Docker Microservices Messaging Gradle JUnit Mockito WireMock
Zalando SE
Berlin/Remote
11 Monate
2024-02 - 2024-12

Implementing Backend and Copy Protection for Galakto Audio Player

Software-Architect/Software-Engineer/IT-Consultant Go (Golang) Svelte TypeScript ...
Software-Architect/Software-Engineer/IT-Consultant
New Media Exchange Service
Definition of architecture, designing and implementing a new service using AWS cloud for
handling partners and large media data transfers.
https://galakto.com

New Partner-Portal
Designing and implementing a new portal for dealing with partners and large media data for Galakto audio tokens.

New Admin-Portal
Designing and implementing a new admin portal for managing partners and large media
data for Galakto audio tokens.

Designing and Implementing Copy Protection for Audio Tokens

Digital Signatures for Galakto Audio Tokens. Consulting for applying Public-Key Cryptography to ensure data origin and consistency.


Go (Golang) Svelte TypeScript Javascript Postgres SQL Docker AWS REST OpenAPI JWT HTML CSS Git GitHub Actions Golang Cloud Architecture Terraform ECS Fargate S3 AWS- SSM Route53 LoadBalancer Public-key cryptography PKI Digital Signature
Tiny Monster GmbH
Berlin/Remote
9 Monate
2023-10 - 2024-06

Migration to Rust and Feature Development

Fullstack Kotlin & Rust Engineer Rust Kotlin Java ...
Fullstack Kotlin & Rust Engineer
Feature Development in microservice architecture
https://www.otto.de/

Migration to Rust
Migration of various components to Rust to reduce costs and increase performance.

AWS
Rust Kotlin Java Spring Boot TypeScript Terraform Redis/ElastiCache Kafka AWS S3 Lambda SQS MongoDB DynamoDB Microservices REST HTML Javascript Thymeleaf JUnit Mockito ECS
Otto GmbH
Hamburg/Remote
6 Monate
2023-04 - 2023-09

New Features for Shopping Basket App

Senior Fullstack Engineer Golang Postgres S3 ...
Senior Fullstack Engineer
New Features for Shopping Basket AppNew Features for Shopping Basket
Implementing new features in microservice architecture environment.
https://www.deutschebahn.com/de/konzern/konzernprofil/Konzernunternehmen/
dbfernverkehr-6879486

Storage System for Big Data
Evaluation of AWS Glacier storage options and Postgres capabilities for big data and
implementing solution.
AWS
Golang Postgres S3 Docker AWS Microservices Rest Glacier Java Kotlin Spring Boot JUnit Mockito
DB Fernverkehr AG
Remote
4 Jahre 1 Monat
2019-05 - 2023-05

Architecture and Development of Online Service for Freelancers

Fullstack GoLang Software Engineer / Architect Go Gin React ...
Fullstack GoLang Software Engineer / Architect
Online Service for freelancers - setup infrastructure
Design a web portal for supporting freelancers. Create backend infrastructure in the cloud,
set up build pipeline and continuous deployment. Implement user management and
corresponding flows (e.g. registration).

Online Service for freelancers - time tracking and invoicing
Define architecture, design and implement time tracking and invoicing.

Online Service for freelancers - profile generation and CRM
Design and implement service for generating profiles for freelancers and customer
relationship management.

AWS Docker
Go Gin React TypeScript AWS RDS AWS Aurora S3 KMS Encryption CDK Docker MySQL REST OpenAPI Bootstrap HTML CSS DroneIO
Code Artist UG
Berlin
7 Monate
2022-09 - 2023-03

New backend infrastructure for dealing with carbon credits persisted on blockchain

Go (Golang) Fullstack Engineer / Consultant Golang Gin Ginkgo ...
Go (Golang) Fullstack Engineer / Consultant
New backend infrastructure for dealing with carbon credits persisted on blockchain
Definition of architecture, interfaces and data flows. Implementation of backend
microservices that handle blockchain data for carbon credits and provide consumer facing
API.
https://www.atem.green

Service security architecture

Designing and implementing token based authentication and roles- and permission concept to meet special customer requirements. Providing a consumer facing API.

New search service for projects tokens
Aggregation of different sources using GraphQL.

New service for users and accounts
Designing and implementing microservice and infrastructure for maintaining accounts and
users tailored to meet special requirements. Implementing various flows for user handling
by leveraging SendGrid.

AWS Sendgrid
Golang Gin Ginkgo MicroService Docker AWS CDK TypeScript ECS Fargate GraphQL REST OpenAPI Postgres JWT Go (Golang) SendGrid
Atem Development GmbH (Climate Startup)
Berlin/Remote
6 Monate
2022-03 - 2022-08

Feature Development for Customs Platform

Senior Java/Kotlin Software Engineer Kotlin Java Spring Boot ...
Senior Java/Kotlin Software Engineer
Shipment Tours for Customs
Implementing new features in a microservice architecture for shipment tours for customs.

Currency transition for export/import countries for customs
Refactoring components, Testing with other teams

Observability for Microservices
Instrumenting Microservices to create telemetry data

Data for enabling customs declarations for a new country
Define data format, create exporter and provide data for 3rd party customs service provider
(Python, Java)
AWS
Kotlin Java Spring Boot AWS Kubernetes Docker Postgres OpenAPI REST Kanban JUnit Mockito OpenTelemetry LightStep
Zalando SE
Remote
5 Monate
2021-11 - 2022-03

Extending TUI Platform

Senior Java Architekt/ Engineer Java Spring Boot Typescript ...
Senior Java Architekt/ Engineer
Federated API for Accommodations
Design and implementation of federated API for accommodations using GraphQL with
Apollo Federation and mircoservices, drive architectural solutions and decisions, present
results to stakeholders, introduce global types de facto standard to accommodation
service

Accommodation Manager Application
Create web application for maintaining accommodations

Data analysis
Analyzing data from different sources using Python

Common Platform for Content about Accommodations
Building and extending Microservices for creating a new platform for accommodation
content.
AWS Kubernetes Docker Postgres Apollo Federation
Java Spring Boot Typescript GraphQL Apollo Federation AWS CDK ECS EKS Docker Kubernetes Postgres SNS SQS JUnit Mockito React NodeJS Jest HTML CSS Storybook OpenAPI Go Python
TUI InfoTec GmbH
Hannover/Remote
11 Monate
2020-11 - 2021-09

User Identity Services

Java Fullstack Engineer Kotlin Java Spring Boot ...
Java Fullstack Engineer
  • migration of existing monolithic services to new microservice architecture in AWS
  • investigation/analysis of technologies in AWS for new stack
  • service for verification of customers using Otto Online Shop
MongoDB DynamoDB
Kotlin Java Spring Boot AWS Gradle Encryption Cloud Formation Scrum Micro Services REST HTML CSS SCSS Docker Docker Compose Github Actions HTML5 Microservices
Otto GmbH
Hamburg/Remote
10 Monate
2020-01 - 2020-10

Development ePost Platform

Senior Software Engineer (Freelancer) RESTful Services Java Groovy ...
Senior Software Engineer (Freelancer)

Development of new and existing projects based on the ePost platform

RESTful Services Java Groovy Spring Boot Hibernate Gradle Maven Oracle JUnit Spock Vagrant Quartz Encryption DKIM-Signature Puppet Kotlin DKIM
Deutsche Post IT Services GmbH
Berlin
4 Monate
2019-09 - 2019-12

Fraud Management Tools

Senior Fullstack Engineer Scrum Java Groovy ...
Senior Fullstack Engineer

Fraud Management Tools

Development and maintenance of existing infrastructure (Java, Groovy, Spring Boot, AWS Cloud, Docker, Gradle, PostgreSQL, JUnit, RESTful Service)

Authentication system migration

Switch internal tool to a new single sign on service (Java, Spring Boot, SAML, Single Sign On using Okta)

Integration risk assessment service

Integration of risk bureau service into internal tool for different countries (Java, Groovy, Spring Boot, RESTful Service)

Scrum Java Groovy Spring Boot AWS Cloud Docker Gradle PostgreSQL JUnit RESTful Service SAML Okta
KLARNA GMBH BERLIN / STOCKHOLM (FREELANCER)
Berlin/Stockholm/remote
1 Jahr 5 Monate
2018-04 - 2019-08

Car trading platform

SENIOR BACKEND ENGINEER
SENIOR BACKEND ENGINEER

Car trading platform

Development of microservice architecture for different countries (Java, Spring, Gradle, Karate, BDD, MongoDB, Hibernate, MySQL, JWT, RESTful Service, KeyCloak, Swagger/OpenAPI, Docker, JUnit, Wiremock)

Application for managing merchants

(Java, Spring, Gradle, MongoDB, JWT, RESTful Service, KeyCloak, Swagger/OpenAPI, Docker, JUnit, Wiremock)

EBAY / MOBILE.DE
5 Jahre 3 Monate
2013-01 - 2018-03

PayPal Working Capital

LEAD-DEVELOPER
LEAD-DEVELOPER

PayPal Working Capital

Portal extension for merchant loans for german market  (Java, JavaScript, AngularJS, NodeJS, KrakenJS, Jasmine, Grunt, REST)

Working Capital Administration Tool

Application for managing merchant loans (JavaScript, AngularJS, NodeJS, KrakenJS, Single Sign On, Jasmine, Grunt)

PayPal Plus

Generic solution for integrating wallet with different payment providers into shop pages  (JavaScript, NodeJS, KrakenJS, Jasmine, Grunt, REST)

Component Testing Tool

Development of a tool to test microservices in PayPal infrastructure and presentation to teams in USA. (Java, Maven, JSON, REST, Oracle)

PayPal Rechnungskauf

Realisierung eines REST-Services in Microservice Architektur  (PHP, Phing, REST, JSON)

PayPal Payment Checkout

Umsetzung verschiedener Anforderungen zum PayPal Checkout (JavaScript, AngularJS, NodeJS)

PAYPAL BERLIN / SAN JOSÉ (USA)
8 Monate
2012-06 - 2013-01

Integration payment provider BillSAFE

SENIOR-SOFTWARE ENGINEER Java Spring Oracle ...
SENIOR-SOFTWARE ENGINEER
  • Utilizing PayPal risk engine in BillSAFE
Java Spring Oracle Stored Procedures Blaze Rule Engine PHP MySQL
PAYPAL
5 Jahre 1 Monat
2007-05 - 2012-05

Portals for Publishers

SENIOR-SOFTWARE ENGINEER CAS JSP Maven ...
SENIOR-SOFTWARE ENGINEER

Development of new CMS for a big publishing company for pharmacy magazines

CMS for managing different portals (Java, Grails, Groovy, CAS, SEO)

Community functionality for CMS for a big publishing company Development of new community functionality based on Enterprise CMS “First Spirit” (Java, JSP, HTML, Maven, First-Spirit, Single Sign On)

Job portal

Relaunch and feature development (Java, Spring, Spring Security, Spring Webflow, JSP, SOAP, HTML, CSS)

Doctor portal

Relaunch and feature development (Grails, Groovy, Hibernate, MySQL, HTML, CSS, JavaScript, SEO)

CAS JSP Maven First-Spirit Single Sign On Java Spring Spring Security Spring Webflow JSP SOAP Grails Hibernate MySQL HTML CSS JavaScript SEO
NEOFONIE GMBH
2 Jahre 4 Monate
2005-02 - 2007-05

Electronic patient file (?Elektronische Patientenakte?)

SOFTWARE ENGINEER Java Spring Spring Security ...
SOFTWARE ENGINEER

Registry for doctor’s offices (“Praxisregister”)

(Java, Spring, Spring Webflow, Spring Security, Hibernate, MySQL)

XML-Interfaces for medical documentation

(Java, XML)

Java Spring Spring Security Hibernate MySQL Apache JackRabbit MagicDraw Eclipse RCP
TeveGe mbH
2 Monate
2004-07 - 2004-08

Further analysis of software for creating and maintaining XML- Interfaces

Trainee XML UML Java ...
Trainee
  • development of a prototype for presentation
XML UML Java JavaScript CSS HTML
Kassenärztliche Bundesvereinigung
3 Monate
2004-03 - 2004-05

Analysis and planning of software for creating and maintaining XML-Interfaces

Trainee XML UML
Trainee
XML UML
Kassenärztliche Bundesvereinigung
5 Monate
2002-10 - 2003-02

Development of components for medical software

Trainee C++ DLLs
Trainee
  • Development of modules as DLLs for Windows
C++ DLLs
Metitur Oy, Finnland

Aus- und Weiterbildung

Aus- und Weiterbildung

2000 - 2005

DIPLOMA COMPUTER SCIENCE

University of Applied Sciences Zwickau (FH)

1996 - 1999

HIGH SCHOOL

High School of Technology Erdmann Kircheis, Aue

Final grade: 1,9

CERTIFICATIONS

  • AWS Certified Developer Associate
  • Spring Web Application Developer
  • Oracle Certified Expert, Java EE 6 Web Component Developer
  • Oracle Certified Professional Java Programmer
  • Certified Scrum Master

Position

Position

I am working as Software-Engineer and Software-Architekt in the cloud environment.

Kompetenzen

Kompetenzen

Top-Skills

Java Go AWS Kotlin Rust Softwarearchitektur Hibernate Kafka Mongo DB Spring SQL REST Git Docker TDD JPA Gradle Kubernetes GraphQL Spring Boot Svelte CI/CD React

Produkte / Standards / Erfahrungen / Methoden

AWS
AWS Cloud
AWS Lambda
CAS
Cloud Formation
CSS
DKIM-Signature
Docker
Encryption
First-Spirit
Gradle
Grails
Hibernate
JUnit
Maven
Okta
Puppet
Quartz
RESTful Service
RESTful Services
SAML
Scrum
SCSS
SEO
Single Sign On
SOAP
Spock
Spring
Spring Boot
Spring Security
Spring Webflow
Vagrant

FOCUS

Java, Spring, Spring Boot, GO, Microservices, REST, Architecture

STORAGES:

MySQL, PostgreSQL, MongoDB, Oracle, H2, Kafka, Redis, Apache JackRabbit

CLOUD / CONTAINER / APP-SERVER:

Docker, AWS Cloud, Apache Tomcat, Jetty, Glassfish, Kubernetes, Helm, Minikube

TEST- / BUILD-TOOLS:

JUnit, TestNG, Mockito, Maven, Gradle, Ant, Wiremock, Powermock, Jenkins, SoapUI, JMeter, Sinon, Mocha, Jasmine, Grunt, Spock

IDEs:

IntelliJ Idea, Data Grid, Webstorm, Goland, PhpStorm, Eclipse, NetBeans, Delphi, Borland C++ Builder

AGILE WORK ENVIRONMENT:

Kanban, Scrum

OTHER:

Continuous Integration, Continuous Delivery, Continuous Deployment, TDD, BDD, JIRA, Confluence, Rally, GitHub, BitBucket

Betriebssysteme

Android
Linux
Mac
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Programmiersprachen

C++
Delphi
GO
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HTML
HTML5
Java
JavaScript
JSP
Kotlin
PHP
SQL
XML

Datenbanken

DynamoDB
MongoDB
MySQL
Oracle
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Datenkommunikation

DKIM
Messaging
Micro Services
REST

Vertrauen Sie auf Randstad

Im Bereich Freelancing
Im Bereich Arbeitnehmerüberlassung / Personalvermittlung

Fragen?

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

Das Freelancer-Portal

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