Florian Fladung - Senior Backend Developer

Q: Where is Florian based?

Florian is based in Eschborn, Germany .

Q: What languages does Florian speak?

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

Q: How many years of experience does Florian have?

Florian has at least 11 years of experience. During this time, Florian has worked in at least 1 role and for 9 different companies . The average length of individual experience is 1 year and 1 month . Note that Florian may not have shared all experience and actually has more experience.

Q: What is Florian's latest experience?

Florian's most recent position is Senior Backend Developer at ING Deutschland AG .

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

In recent years, Florian has worked for ING Deutschland AG , Deutsche Vermögensberatung AG , and DER Touristik Online GmbH .

Q: Which industries is Florian most experienced in?

Florian is most experienced in industries like Tourism and Hospitality , Banking and Finance , and Information Technology (IT) . Florian also has some experience in Automotive .

Q: Which business areas is Florian most experienced in?

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

Q: Which industries has Florian worked in recently?

Florian has recently worked in industries like Tourism and Hospitality and Banking and Finance .

Q: Which business areas has Florian worked in recently?

Florian has recently worked in business areas like Information Technology (IT) .

Recommended expert

Eschborn, Germany

Experience

Jul 2024 - Jun 2025

1 year

Senior Backend Developer

ING Deutschland AG

Database design with Oracle DB, JPA, and Flyway, considering high performance requirements
Analysis of multiple architecture drafts and identification of technical risks
Design and implementation of multiple interfaces and integrations, especially REST APIs and Kafka topics
Setup of Elasticsearch for monitoring and analyzing log data
Establishment of an iterative workflow in the project team in light of complex business requirements

Oct 2023 - Mar 2024

6 months

Senior Backend Developer

Deutsche Vermögensberatung AG

Developed business logic to determine risk classes and calculate investment proposals for new financial products in Spring Boot microservices, Java, and Kotlin
Extended digital disclosure forms according to the Securities Trading Act (WpHG) in Typescript and Java
Integrated micro-frontends as web components into an Angular application
Expanded CI/CD pipelines and performed releases using GitHub Actions in Microsoft Azure Cloud
Updated Docker runtimes and implemented secret management with Azure Key Vault
Updated an Angular application and Angular Material components, migrating the affected UI elements and styles
Performed database schema migrations for PostgreSQL and OracleDB using Flyway
Introduced agile methods such as dailies, plannings, and conducted retrospectives

May 2019 - Sep 2023

4 years 5 months

Senior Backend Developer

DER Touristik Online GmbH

Designed and implemented a geographic search feature using Elasticsearch, PostGIS, Google Geocoding API, and Spring Boot, optimizing keywords and result ordering
Designed and implemented a landing page generator for thousands of SEO-optimized subpages using Next.js, Spring Boot, PostgreSQL, and a headless CMS
Developed the nightly product data import as a batch job using Spring Boot, JPA, and PostgreSQL, including monitoring, log analysis, and bug fixing with Datadog
Optimized performance of Spring Boot applications with JPA and PostgreSQL and derived best practices
Defined and monitored company-wide architecture and coding guidelines for the backend
Defined and coordinated a cross-team test and release strategy for backend, frontend, and DevOps to enable continuous delivery and zero downtime deployments based on Docker, Kubernetes, AWS Cloud, and GitLab CI
Designed and coordinated an onboarding plan for external contractors and remote teams
Supervised bachelor's theses and coached several junior developers
Identified technical risks and developed strategic countermeasures in exchange with the CTO and executive management

Jul 2018 - Apr 2019

10 months

Senior Backend Developer

Valtach Mobility GmbH

Enhanced an authentication service based on OAuth2 and Spring Security for authenticating mobile and IoT devices as well as web users
Developed a service to manage vehicle fleets and multi-level role-based permissions using Spring Framework, OAuth2, and PostgreSQL
Adapted multiple services for parallel operation in the data center and AWS Cloud
Designed a solution architecture to scale the gateway service for vehicle communication using Spring Framework, Redis, and Drools Rule Engine
Designed a cross-team test strategy to decouple test data, stabilize, and speed up test suites with Jenkins, Docker, PostgreSQL, Liquibase, and FitNesse

Jan 2018 - Jun 2018

6 months

Senior Backend Developer

DB Systel GmbH

Implemented site-specific import and export interfaces in REST and XML using Spring Boot and Java 8
Converted internal data formats and performed data migration with XSLT scripts
Extended customization of CoreMedia 9 modules for specific websites
Adapted CMS internal and public search functions to specific data and structures using Spring Boot and Apache Solr
Executed and automated regression tests on large data sets
Coordinated test and release processes with clients
Conducted deployments using GitLab in Docker and AWS Cloud

Oct 2017 - Dec 2017

3 months

Senior Backend Developer

DB Systel GmbH

Connecting additional source systems to the crawler via web services (SOAP and REST) while considering different authorization concepts
Migrating the PostgreSQL database and the Solr search index to run in Docker, OpenShift, and AWS Cloud
Identifying and fixing security vulnerabilities in the Spring Boot backend and web frontend

Jun 2017 - Sep 2017

4 months

Senior Backend Developer

ISO Gruppe

Independent development and operation of the sales prototype
Creating the application and system architecture

Oct 2016 - May 2017

8 months

Senior Backend Developer

Deutsche Bank AG

Developing a REST API and business logic for calculating the pension gap using Java 8 and Spring Boot
Integrating a SOAP web service for concluding insurance contracts using Java 8 and Spring Boot
Creating an application architecture to scale development from one to five Scrum teams
Conducting code reviews and providing guidance in backend, frontend, and release management

Jan 2016 - Sep 2016

9 months

Senior Backend Developer

Commerzbank AG

Developing JSF PrimeFaces interfaces for managing and executing test cases
Adapting the application to work with both Java EE/WebSphere and Spring Boot/Tomcat
Developing various connectors configurable via the web interface (SOAP, REST, XML, JSON, CSV, and others) using Apache Camel
Developing an export function to download test cases and reports from the Oracle database via JPA in CSV format

Aug 2014 - Dec 2015

1 year 5 months

Senior Backend Developer

Bosch Software Innovations

Designing and managing requirements for an application to control and monitor software updates of IoT telematics units
Implementing a state machine for server-side tracking of IoT devices using Spring Boot, Oracle DB, and Angular
Creating automated acceptance and integration tests with Robot Framework and CI pipelines with Jenkins
Designing an event-sourcing architecture based on Vert.x and ActiveMQ
Identifying and migrating existing business logic from Inubit BPMN into Spring Boot microservices

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 Tourism (4.5 years), Banking and Finance (2.5 years), Information Technology (2.5 years), and Automotive (1 year).

Tourism

Banking and Finance

Information Technology

Automotive

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 (10.5 years), Product Development (2.5 years), and Quality Assurance (1 year).

Information Technology

Product Development

Quality Assurance

Summary

Senior Software Developer and Solution Architect with over 10 years of experience in Java/Spring Boot, microservices, web development and cloud technologies. Extensive hands-on experience with agile methods as well as team leadership and strategic architecture planning.

Skills

Software Development, Software Architecture, Agile Methods

Spring Boot
Microservices
Continuous Integration/delivery (Ci/cd)
Kotlin
E-commerce
Java
Search Engines
Postgresql
Monitoring/observability
Test Automation
Elasticsearch
Domain Driven Design (Tdd)
Rabbitmq
Cloud Platforms (Aws, Azure)
Rest Api
Angular
Containerization (Docker)
Typescript
Zero Downtime Deployment

Leadership & Strategy

Team Leadership & Mentoring
Architecture Planning
Project Planning And Goal Setting

Languages

German

Native

English

Advanced

Education

Sep 2011 - Jun 2014

Fachhochschule Frankfurt

Bachelor of Science · Computer Science · Frankfurt, Germany

Oct 2003 - Jun 2009

Goethe Universität Frankfurt

Intermediate Diploma · Physics · Frankfurt, Germany

Certifications & licenses

Certified Scrum Master

Scrum Alliance

Istqb Certified Tester Foundation Level

ISQI GmbH

Profile

Created

June 2025

Last Update

June 2025

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Frequently asked questions

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

Where is Florian based?

Florian is based in Eschborn, Germany.

What languages does Florian speak?

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

How many years of experience does Florian have?

Florian has at least 11 years of experience. During this time, Florian has worked in at least 1 role and for 9 different companies. The average length of individual experience is 1 year and 1 month. Note that Florian may not have shared all experience and actually has more experience.

What roles would Florian be best suited for?

Based on recent experience, Florian would be well-suited for roles such as: Senior Backend Developer.

What is Florian's latest experience?

Florian's most recent position is Senior Backend Developer at ING Deutschland AG.

What companies has Florian worked for in recent years?

In recent years, Florian has worked for ING Deutschland AG, Deutsche Vermögensberatung AG, and DER Touristik Online GmbH.

Which industries is Florian most experienced in?

Florian is most experienced in industries like Tourism and Hospitality, Banking and Finance, and Information Technology (IT). Florian also has some experience in Automotive.

Which business areas is Florian most experienced in?

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

Which industries has Florian worked in recently?

Florian has recently worked in industries like Tourism and Hospitality and Banking and Finance.

Which business areas has Florian worked in recently?

Florian has recently worked in business areas like Information Technology (IT).

What is Florian's education?

Florian holds a Bachelor in Computer Science from Fachhochschule Frankfurt.

Does Florian have any certificates?

Florian has 2 certificates. These include: Certified Scrum Master and Istqb Certified Tester Foundation Level.

What is the availability of Florian?

Florian is immediately available full-time for suitable projects.

What is the rate of Florian?

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