Daniel Langemann - Developer / Software Architect

Q: Where is Daniel based?

Daniel is based in Kerpen, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Daniel speak?

Daniel speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Daniel have?

Daniel has at least 7 years of experience. During this time, Daniel has worked in at least 1 role and for 6 different companies . The average length of individual experience is 1 year and 10 months . Note that Daniel may not have shared all experience and actually has more experience.

Q: What is Daniel's latest experience?

Daniel's most recent position is Developer / Software Architect at rffl.io .

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

In recent years, Daniel has worked for rffl.io , Boxine GmbH , Cologne Broadcasting Center GmbH , and Telefónica Deutschland Gruppe .

Q: Which industries is Daniel most experienced in?

Daniel is most experienced in industries like Retail , Telecommunication , Media, and Entertainment and Publishing . Daniel also has some experience in Government and Public Administration , Advertising , and Information Technology (IT) .

Q: Which business areas is Daniel most experienced in?

Daniel is most experienced in business areas like Information Technology (IT) , Product Development , and Quality Assurance (QA) .

Q: Which industries has Daniel worked in recently?

Daniel has recently worked in industries like Retail , Media, Entertainment and Publishing , and Telecommunication .

Q: Which business areas has Daniel worked in recently?

Daniel has recently worked in business areas like Information Technology (IT) and Product Development .

Recommended expert

Kerpen, Germany

Experience

Aug 2025 - Nov 2025

4 months

Developer / Software Architect

rffl.io

PHP 8.4
Platform for sweepstakes: API-first approach with Symfony/API Platform
API Platform 4.2 (REST, JWT, Doctrine/PostgreSQL, API documentation) plus AWS tools
Symfony 7.3 for infrastructure, hosting, and subsequent operation on AWS with ECS
Postgres
AWS RDS, SQS, Fargate, RDS Postgres database, and AWS SQS message queue
Managing infrastructure with Terraform
After successfully implementing Terraform, the GmbH was founded as the next organizational step

Jan 2022 - Jun 2025

3 years 6 months

Developer / Software Architect

Boxine GmbH

PHP
Optimized and further developed the shop backend as the central interface in the company
Performance optimization for rapidly growing user numbers
Launched additional shops
Integration of Commercetools, OpenSearch, AWS services, and Redis
Onboarding of new AWS colleagues

Oct 2020 - Dec 2021

1 year 3 months

Germany

Developer / Software Architect

Cologne Broadcasting Center GmbH

PHP
Symfony
Updated a sweepstakes portal
Designed and developed the logo generator for internal use
Optimized the video database
Worked in an agile team to support internal ZF1 teams

Oct 2020 - Dec 2021

1 year 3 months

Germany

Developer / Software Architect

Telefónica Deutschland Gruppe

PHP
Symfony
Extended the existing customer self-care application
Integrated with various internal systems via SOAP and REST
Migrated the legacy application to the new system architecture based on REST API and React
Integrated into the existing system landscape using Docker, PHPUnit, and Jenkins

Aug 2019 - Dec 2019

5 months

Germany

Developer / Software Architect

Zentrale Polizeidirektion Niedersachsen

PHP
Updated the internal configuration and master data management from PHP 5.3 to PHP 7.2
Adjusted the database and LDAP connection (OpenLDAP)
Ensured existing functionality with frontend tests using PHPUnit and Behat

May 2019 - Jul 2019

3 months

Germany

Developer / Software Architect

Printus GmbH

PHP
Design, development and optimization of a multi-tenant system based on OXID EE 6.7
Refactoring of the existing template structure
Integration of Webpack as a build tool
Adaptation of the existing JavaScript technology based on ECMAScript 5
Quality assurance with PHPUnit

Jul 2018 - Mar 2019

9 months

Germany

Developer / Software Architect

Telefónica Deutschland Gruppe

PHP
Symfony
Enhancement of the existing Customer Self Care application
Integration with various internal systems via SOAP and REST
Migration of the legacy application to the current framework version
Quality assurance through code reviews
Testing using PHPUnit and Behat
Use of Docker and Jenkins

Nov 2017 - Jun 2018

8 months

Germany

Developer / Software Architect

Cologne Broadcasting Center GmbH

Intranet relaunch for the RTL Group
Implementation of individual components based on Symfony microservices as REST APIs
Refactoring of spiele.rtl.de to quickly comply with GDPR
Use of PHP, Docker and ZF1

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Retail (3.5 years), Media and Entertainment (2 years), Telecommunication (2 years), Advertising (0.5 years), Information Technology (0.5 years), and Government and Administration (0.5 years).

Retail

Media and Entertainment

Telecommunication

Advertising

Information Technology

Government and Administration

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (7 years), Product Development (1.5 years), and Quality Assurance (0.5 years).

Information Technology

Product Development

Quality Assurance

Summary

I have over 10 years of experience working as a software architect and developer, building scalable platforms and refining complex systems for diverse organizations. I specialize in PHP and Symfony, have worked extensively with AWS, and have a strong background in API-first design, performance optimization, and secure data management.

I enjoy working in agile environments where I bring new technologies into traditional settings to drive efficiency and maintain high software quality. My practical approach and hands-on expertise help me deliver meaningful improvements across various industries.

Skills

Php
Symfony
E-commerce
Devops
Aws

Languages

German

Native

English

Advanced

Profile

Created

February 2026

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Frequently asked questions

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

Where is Daniel based?

Daniel is based in Kerpen, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Daniel speak?

Daniel speaks the following languages: German (Native), English (Advanced).

How many years of experience does Daniel have?

Daniel has at least 7 years of experience. During this time, Daniel has worked in at least 1 role and for 6 different companies. The average length of individual experience is 1 year and 10 months. Note that Daniel may not have shared all experience and actually has more experience.

What roles would Daniel be best suited for?

Based on recent experience, Daniel would be well-suited for roles such as: Developer / Software Architect.

What is Daniel's latest experience?

Daniel's most recent position is Developer / Software Architect at rffl.io.

What companies has Daniel worked for in recent years?

In recent years, Daniel has worked for rffl.io, Boxine GmbH, Cologne Broadcasting Center GmbH, and Telefónica Deutschland Gruppe.

Which industries is Daniel most experienced in?

Daniel is most experienced in industries like Retail, Telecommunication, Media, and Entertainment and Publishing. Daniel also has some experience in Government and Public Administration, Advertising, and Information Technology (IT).

Which business areas is Daniel most experienced in?

Daniel is most experienced in business areas like Information Technology (IT), Product Development, and Quality Assurance (QA).

Which industries has Daniel worked in recently?

Daniel has recently worked in industries like Retail, Media, Entertainment and Publishing, and Telecommunication.

Which business areas has Daniel worked in recently?

Daniel has recently worked in business areas like Information Technology (IT) and Product Development.

What is the availability of Daniel?

Daniel is immediately available for suitable projects.

What is the rate of Daniel?

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