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 , Banking and Finance , and Information Technology . 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 , Product Development , and Quality Assurance .

Q: Which industries has Florian worked in recently?

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

Q: Which business areas has Florian worked in recently?

Florian has recently worked in business areas like Information Technology .

Recommended expert

Eschborn, Germany

Check rate

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 various interfaces and integrations, especially REST APIs and Kafka topics
Setup of Elasticsearch for monitoring and analyzing log data
Establishment of an iterative work approach in the project team facing 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 using 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
Enhanced CI/CD pipelines and carried out 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 affected UI elements and styles
Performed database schema migrations for PostgreSQL and OracleDB with Flyway
Introduced agile methods like Dailies, Plannings and conducted Retrospectives

May 2019 - Sep 2023

4 years 5 months

Senior Backend Developer

DER Touristik Online GmbH

Designed and implemented a geographical search function with 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 with Spring Boot, JPA and PostgreSQL, including monitoring, log analysis and bug fixing using Datadog
Performance-optimized Spring Boot applications with JPA and PostgreSQL, deriving best practices
Formulated and enforced company-wide backend architecture and coding guidelines
Formulated and coordinated a cross-team test and release strategy for backend, frontend and DevOps to enable continuous delivery and zero downtime deployments using Docker, Kubernetes, AWS Cloud and GitLab CI
Designed and coordinated an onboarding plan for external service providers and remote teams
Supervised bachelor theses and coached multiple junior developers
Identified technical risks and developed strategic countermeasures in collaboration with the CTO and 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 for managing vehicle fleets and multi-level role-based permissions using Spring Framework, OAuth2 and PostgreSQL
Adapted several 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 team-wide 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 using XSLT scripts
Extended customizing of CoreMedia 9 modules for specific websites
Adapted the CMS internal and public search functions to specific data and data structures using Spring Boot and Apache Solr
Conducted and automated regression tests on large data sets
Coordinated test and release processes with clients
Carried out 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 for operation in Docker, OpenShift, and AWS Cloud
Identifying and resolving security vulnerabilities in the Spring Boot backend and the web frontend

Jun 2017 - Sep 2017

4 months

Senior Backend Developer

ISO Gruppe

Independently developing and operating the sales prototype
Designing the application and system architecture

Oct 2016 - May 2017

8 months

Senior Backend Developer

Deutsche Bank AG

Developing a REST API and business logic to calculate the pension gap with Java 8 and Spring Boot
Integrating a SOAP web service to conclude insurance contracts in Java 8 and Spring Boot
Creating an application architecture to scale development from one to five Scrum teams
Performing code reviews and advising on backend, frontend, and release management

Jan 2016 - Sep 2016

9 months

Senior Backend Developer

Commerzbank AG

Developing JSF PrimeFaces interfaces to manage and run test cases
Adapting the application for compatibility with Java EE/WebSphere and at the same time Spring Boot/Tomcat
Building various connectors configurable through the web interface (SOAP, REST, XML, JSON, CSV, and more) with Apache Camel
Implementing an export function for test cases and reports from the Oracle database via JPA as CSV downloads

Aug 2014 - Dec 2015

1 year 5 months

Senior Backend Developer

Bosch Software Innovations

Drafting 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 to Spring Boot microservices

Industry Experience

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

Experienced in Tourism, Banking and Finance, Information Technology, and Automotive.

Tourism

Banking and Finance

Information Technology

Automotive

Business Area Experience

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

Experienced in Information Technology, Product Development, and Quality Assurance.

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 in agile methods as well as in 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

Frankfurt University of Applied Sciences

Bachelor of Science · Computer Science · Frankfurt, Germany

Oct 2003 - Jun 2009

Goethe University Frankfurt

Pre-diploma · Physics · Frankfurt, Germany

Certifications & licenses

Certified Scrum Master

Scrum Alliance

Istqb Certified Tester Foundation Level

ISQI GmbH

Statistics

Experience

Total positions 10

Experience in Tourism 4.5 y

Avg length 1 y

Longest experience 4 y 4 m

Expertise

Recent roles Senior Backend Developer

Main industries Tourism, Banking and Finance, Information Technology

Main business areas Information Technology, Product Development, Quality Assurance

Qualifications

Highest degree Bachelor

Certifications earned 2

Profile

Created

June 2025

Last Update

June 2026

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Frequently asked questions

Have questions? Find more information here.

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, Banking and Finance, and Information Technology. 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, Product Development, and Quality Assurance.

Which industries has Florian worked in recently?

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

Which business areas has Florian worked in recently?

Florian has recently worked in business areas like Information Technology.

What is Florian's education?

Florian holds a Bachelor in Computer Science from Frankfurt University of Applied Sciences.

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.