Oliver Langer - Developer, Architect

Q: Where is Oliver based?

Oliver is based in Ahrensburg, Germany .

Q: What languages does Oliver speak?

Oliver speaks the following languages: German (Native), English (Advanced), French (Elementary) .

Q: How many years of experience does Oliver have?

Oliver has at least 25 years of experience. During this time, Oliver has worked in at least 8 different roles and for 11 different companies . The average length of individual experience is 2 years and 1 month . Note that Oliver may not have shared all experience and actually has more experience.

Q: What is Oliver's latest experience?

Oliver's most recent position is Developer, Architect at libri GmbH .

Q: What companies has Oliver worked for in recent years?

In recent years, Oliver has worked for libri GmbH , EOS Technology Solutions , edict egaming GmbH , and Deutsche Presse-Agentur (dpa) .

Q: Which industries is Oliver most experienced in?

Oliver is most experienced in industries like Information Technology , Media and Entertainment , and Professional Services . Oliver also has some experience in Retail and Healthcare .

Q: Which business areas is Oliver most experienced in?

Oliver is most experienced in business areas like Information Technology , Product Development , and Business Intelligence .

Q: Which industries has Oliver worked in recently?

Oliver has recently worked in industries like Media and Entertainment , Retail , and Information Technology .

Q: Which business areas has Oliver worked in recently?

Oliver has recently worked in business areas like Information Technology and Product Development .

Recommended expert

Ahrensburg, Germany

Check rate

Experience

Sep 2022 - Feb 2026

3 years 6 months

Developer, Architect

libri GmbH

Role: Developer, Architect
Technologies: java, typescript, golang, spring (boot, web, security, data), Angular, AWS (OpenSearch, Aurora, SNS/SQS, CloudWatch, EC2, IAM), Kubernetes, Terraform, Helm, OAuth, Keycloak, CI/CD, gradlew, Liquibase, Test Driven Development, shell scripting

Sep 2021 - Jul 2022

11 months

Architect, Developer

EOS Technology Solutions

Role: Architect, Developer
Technologies: java, spring boot (web, security, data), oauth2, auth0, AWS cognito, GraphQL, REST, RabbitMQ, postgres, gradle, gitlab-ci, kubernetes, docker

Apr 2020 - Jul 2021

1 year 4 months

Developer, Architect

edict egaming GmbH

Role: Developer, Architect
Technologies: java, quarkus, JPA, Microprofile, REST, payara, typescript, angular, cypress, jenkins, maven, docker, kubernetes, helm

Jan 2019 - Present

7 years 4 months

Product Owner, Architect, Developer, Coordinator

Deutsche Presse-Agentur (dpa)

Role: Product Owner, Architect, Developer, Coordinator
Technologies: Claude Code, AI workflow and process design, Kotlin, Spring Boot (web, security, data, batch), GraphQL, REST, JavaScript, React, Apollo React, Postgres/Hibernate, JWT, GitLab CI, Gradle, Yarn, Docker

Jan 2017 - Dec 2019

3 years

Architect, Developer, Consulting, Coaching

EOS Technology Solutions

Role: Architect, Developer, Consulting, Coaching
Technologies: java, kotlin, spring boot (web, security, data), GraphQL, REST, oracle, mariadb, jenkins, gradle, docker swarm

Jan 2016 - Dec 2017

2 years

Architect, Developer

German Press Agency (dpa)

Role: Architect, Developer
Technologies: java, javascript, wildfly, JEE, Angular (1.4), antlr, kafka, cassandra, elasticsearch, Mule ESB/BPM, maven, jenkins, XML processing according to IPTC standard

Jan 2014 - Dec 2016

3 years

Product idea, architecture, development

Own solution / app

Role: Product idea, architecture, development
Technologies: java, javascript, ios, android, google cloud, REST

Jan 2014 - Dec 2016

3 years

Architect, Developer

dpa newslab

Role: Architect, Developer
Technologies: java, python, flask, django, opscode-chef, AWS (lambda, dynamodb, ec2), terraform, Mule ESB, maven, setup.py, make, jenkins, IPTC content metadata, photo metadata standards

Jan 2012 - Dec 2014

3 years

Developer

Otto

Role: Developer
Technologies: java, wicket, javascript, jquery, REST, HMAC, apache, mongodb, jenkins, gradle

Jan 2010 - Dec 2012

3 years

System Architect

Olympus Surgical Technologies

Role: System Architect
Technologies: C/C++, C#, .NET, WCF, WPF, Windows Embedded, Enterprise Architect

Jan 2007 - Dec 2010

4 years

Senior Consultant

mgm technology partners

Role: Senior Consultant
Technologies: java, C++, spring, hibernate, glassfish, JBoss, sql, oracle, postgres, boost, stl, cmake, valgrind, Eclipse CDT, Jira/Confluence, subversion, ETL, Pentaho Kettle, BIRT, Jasper

Jan 2001 - Dec 2007

7 years

Senior Consultant

Coremedia

Role: Senior Consultant
Technologies: java, spring, jsf, jsp, jms, corba, tomcat, SAP Portal Server, maven, grinder, jprofiler, SOA, Oracle, MySQL, jdbc, Linux HA-Cluster, Solaris-Cluster, Websphere-Application-Server, Intershop Enfinity

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Media and Entertainment, Professional Services, Retail, and Healthcare.

Information Technology

Media and Entertainment

Professional Services

Retail

Healthcare

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, and Business Intelligence.

Information Technology

Product Development

Business Intelligence

Summary

For more than 25 years, I have been working in various industries (media, e-commerce, finance, etc.), mainly as a software developer and software architect.

My focus is on designing and developing Java- and cloud-based web applications.

I put emphasis on working teams, delivery on time, innovation, and enjoying what I do.

I gladly take on challenging goals (migrations, tech shifts, integrations, …) in close, agile collaboration. I enjoy the “jump” into new domains, have strong analytical skills, and quickly build an understanding of customer requirements.

I like working in teams and can communicate and collaborate at all levels. I also address risks and issues openly and respectfully, along with solution suggestions, to enable joint solutions.

Recently deepened knowledge: OpenSearch (feed/search architecture, integration), AWS SNS-based messaging architectures for large data streams/volumes, Kubernetes, Claude Code / fully AI-based development.

Skills

Team Player
Communicative
Strong Analytical Skills
Creative And Innovative Mind
Pragmatist
Goal Oriented
Structured And Organized Approach
Experience Abroad

Languages

German

Native

English

Advanced

French

Elementary

Education

High school diploma

Diploma in Computer Science · Computer Science

Statistics

Experience

Total positions 12

Experience in Information Technology 20 y

Avg length 3 y 4 m

Longest experience 7 y 3 m

Expertise

Recent roles Developer, Architect, Architect, Developer, Product Owner, Architect, Developer, Coordinator

Main industries Information Technology, Media and Entertainment, Professional Services

Main business areas Information Technology, Product Development, Business Intelligence

Qualifications

Profile

Created

April 2026

Last Update

April 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Oliver based?

Oliver is based in Ahrensburg, Germany.

What languages does Oliver speak?

Oliver speaks the following languages: German (Native), English (Advanced), French (Elementary).

How many years of experience does Oliver have?

Oliver has at least 25 years of experience. During this time, Oliver has worked in at least 8 different roles and for 11 different companies. The average length of individual experience is 2 years and 1 month. Note that Oliver may not have shared all experience and actually has more experience.

What roles would Oliver be best suited for?

Based on recent experience, Oliver would be well-suited for roles such as: Developer, Architect, Architect, Developer, Product Owner, Architect, Developer, Coordinator.

What is Oliver's latest experience?

Oliver's most recent position is Developer, Architect at libri GmbH.

What companies has Oliver worked for in recent years?

In recent years, Oliver has worked for libri GmbH, EOS Technology Solutions, edict egaming GmbH, and Deutsche Presse-Agentur (dpa).

Which industries is Oliver most experienced in?

Oliver is most experienced in industries like Information Technology, Media and Entertainment, and Professional Services. Oliver also has some experience in Retail and Healthcare.

Which business areas is Oliver most experienced in?

Oliver is most experienced in business areas like Information Technology, Product Development, and Business Intelligence.

Which industries has Oliver worked in recently?

Oliver has recently worked in industries like Media and Entertainment, Retail, and Information Technology.

Which business areas has Oliver worked in recently?

Oliver has recently worked in business areas like Information Technology and Product Development.

What is Oliver's education?

Oliver attended education in High school diploma.

What is the availability of Oliver?

Oliver will be available full-time from May 2026.

What is the rate of Oliver?

Oliver's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.