Sercan Tatar - Certified Professional for Software Architecture Foundation Level

Q: Where is Sercan based?

Sercan is based in Esslingen am Neckar, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Sercan speak?

Sercan speaks the following languages: German (Native), Turkish (Advanced), English (Intermediate) .

Q: How many years of experience does Sercan have?

Sercan has at least 16 years of experience. During this time, Sercan has worked in at least 6 different roles and for 20 different companies . The average length of individual experience is 1 year and 9 months . Note that Sercan may not have shared all experience and actually has more experience.

Q: What is Sercan's latest experience?

Sercan's most recent position is Co-Founder & Lead Software Architect at Pflege-Pfad .

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

In recent years, Sercan has worked for Pflege-Pfad , Deutsche Rentenversicherung , Landesamt für Geoinformation und Landentwicklung (LGL) , Informationstechnikzentrum Bund (ITZ Bund) , and Etict .

Q: Which industries is Sercan most experienced in?

Sercan is most experienced in industries like Insurance , Government and Administration , and Banking and Finance . Sercan also has some experience in Information Technology , Agriculture , and Transportation .

Q: Which business areas is Sercan most experienced in?

Sercan is most experienced in business areas like Information Technology , Operations , and Product Development . Sercan also has some experience in Project Management and Quality Assurance .

Q: Which industries has Sercan worked in recently?

Sercan has recently worked in industries like Government and Administration , Insurance , and Information Technology .

Q: Which business areas has Sercan worked in recently?

Sercan has recently worked in business areas like Information Technology , Operations , and Quality Assurance .

Recommended expert

Esslingen am Neckar, Germany

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Experience

Jan 2026 - Present

7 months

Co-Founder & Lead Software Architect

Pflege-Pfad

Focus: system architecture, cloud-native platforms, microservices, API design
Product: Pflege-Pfad is a digital matchmaking platform that connects relatives of people in need of care directly with verified care services and caregivers - without an agency and without ongoing fees.
Business analysis & process design:
Analysis of the German care market and identification of the key pain points of both target groups.
Modeling of the core business processes: registration, verification, care request, application, placement, and rating.
Definition of the business model as a freemium/premium model with optional contact unlocking.
Creation of user stories and requirements documentation for relatives, care services, and administrators.
Design of trust and quality assurance mechanisms with document upload, admin review process, and rating system.
Coordination with stakeholders and validation of product decisions with potential users.
Technical implementation:
Design and implementation of the entire platform architecture as a solo developer.
Design and implementation of a REST API with Spring Boot and Kotlin, including JWT-based authentication.
Development of the frontend as a single-page application with Angular 17.
Implementation of the AWS infrastructure with EC2, RDS PostgreSQL, S3, CloudFront, and IAM.
Document upload with AWS S3 via presigned URLs for verification of care services.
Email notifications via Resend API.
AI-supported care service search via OpenAI API.
Implementation of complete user flows such as registration, login, password reset, and placement process.
Building an admin panel for user and care service management as well as analytics.
CI/CD with GitHub Actions and containerized deployments with Docker.
End-to-end tests with Playwright.

Technologies: Kotlin, Spring Boot 3, Spring Security, JWT, JPA/Hibernate, PostgreSQL, Angular 17, TypeScript, RxJS, AWS (EC2, ECS, S3, CloudFront CDN, RDS PostgreSQL, IAM), nginx, GitHub Actions, Playwright, Maven, Git, OpenAI API, Resend API, Docker, Scrum, i18n (DE/EN/TR), Kiro, feature-flag architecture.

Aug 2024 - Oct 2025

1 year 3 months

Software Architect & Senior Full-Stack Developer

Deutsche Rentenversicherung

Focus: backend modernization, architecture, test automation
Modernization and migration of a legacy application from Java 1.4 to Java 11, including adjustments to the data access layer, data migration, Hibernate/JPA migration, and Oracle database optimization.
Design and implementation of JPA/Hibernate and Hibernate Envers solutions.
Building and maintaining CI/CD processes with Git, Bitbucket, and Maven.
Implementation of UI, integration, and end-to-end tests with Playwright and JUnit.
Coordination of technical target architectures within the team and program context.
Development of ZER registry functions, XML bulk data processing, and Oracle optimizations.
Integration of IBM MQ as well as BPM processes and close coordination with business departments.
Implementation of automated API, integration, and interface tests as part of distributed microservice architectures.
Work in a regulated environment using agile methods (Scrum/SAFe) while also following classic procedures and documentation requirements of the public sector (V-Model XT).

Technologies & methods: Docker, Oracle Database, Java 11, Hibernate, Hibernate Envers, REST, Microservices, JSF, MapStruct, Maven, IBM MQ, OpenAPI, AsyncAPI, BPM, Domain Driven Design, architecture patterns, SAFe, Git/GitHub, CI/CD, Confluence, TOGAF, Playwright, JUnit, Scrum, materialized views, XML, XSD, XSLT, STAX, SAX, DevOps, test automation.

May 2024 - Dec 2025

1 year 8 months

Software Architect & Senior Full-Stack Developer

Landesamt für Geoinformation und Landentwicklung (LGL)

Focus: architecture, Java backend, integration architecture
Creation of architecture artifacts, process descriptions, BPMN and UML use case diagrams, as well as user stories for FIONA/LAIS.
Development and maintenance of the FIONA system for electronic support of grant applications.
Integration and further development of interfaces with Apache ActiveMQ and other messaging technologies.
Implementation of messaging and integration architectures with Apache Camel, Kafka, and RabbitMQ.
Work in SAFe-based program structures with PI planning and cross-team coordination.
Development of functions for capturing, processing, and validating area information with aerial images and GIS technologies.
2nd-level support, incident analysis, root cause analysis, and go-live support.
Operation and further development of containerized applications with Kubernetes and OpenShift.
Application management
Release changes
Certificate creation/management
Technical operations support
Incident management
Deployment support
Functional specifications / technical specifications

Technologies & methods: Java 11, Hibernate, Hibernate Performance, Hibernate Envers, Liquibase, REST, JSF, JSF WebFlow, MapStruct, Maven, ANT, Spring ecosystem, BPM, PrimeFaces, architecture patterns, Git, Bitbucket, Pipelines, CI/CD, Confluence, JUnit, Scrum, OAuth2, Keycloak, OpenAPI / Swagger, DevOps, Fullstack, SAFe, AsyncAPI.

Jan 2024 - Jun 2024

6 months

Software Architect & Senior Full-Stack Developer

Informationstechnikzentrum Bund (ITZ Bund)

Focus: backend, architecture, containerization
Development and testing of backend components for registry and administrative processes.
Architecture work with Spring, Hibernate, and JPA.
Auditing with Hibernate Envers.
Processing XML bulk data with STAX and SAX.
Use of message brokers such as Apache ActiveMQ and IBM MQ.
Use of MariaDB with JPA.
Building the CI/CD pipeline with Jenkins.
Carrying out UI, integration, and end-to-end tests.
Docker and container orchestration.
Working in scaled agile structures with a focus on backend, integration, and platform teams.
Test automation and validation of service-based interfaces in distributed system landscapes
Development and further development of Java-based business applications and REST services in a public sector environment.
Implementation of microservices and event-based integrations with Apache Kafka.
Creation and execution of automated tests with JUnit as well as support for test automation with Selenium and SoapUI.
Participation in CI/CD and DevOps processes including build, release, and deployment automation.
Use of Jira and Confluence for sprint planning, documentation, and technical coordination.
Version control with Git, GitHub, and SVN as well as artifact management via Nexus.
Quality assurance through code reviews and static code analysis with SonarQube.
Integration of databases and use of Oracle SQL Developer for analysis and development.
Support in operating applications on WebLogic Server and Kubernetes-based platforms.
Work in a regulated environment using agile methods (Scrum/SAFe) while also following classic procedures and documentation requirements of the public sector (V-Model XT).

Technologies used: Java, Spring Boot, Spring, REST, Apache Kafka, Angular, JavaScript, TypeScript, JUnit, Selenium, SoapUI, Git, GitHub, SVN, Jira, Confluence, CI/CD, DevOps, Jenkins, Nexus, SonarQube, Oracle SQL Developer, SQL, Oracle, PostgreSQL, WebLogic Server, Docker, Kubernetes, OpenShift, Microservices, Domain Driven Design, Swagger, V-Model XT, OpenAPI, Maven, Eclipse, IntelliJ, OAuth2, Spring Security, XML, XSD, XSLT, STAX, SAX

Jul 2023 - Dec 2023

6 months

Software Architect & Senior Full-Stack Developer

Etict

Focus: full stack, microservices platform, cloud
Work in the Scrum team on product maintenance and product expansion.
Development of a public API for integrating external partners.
Redevelopment of an administration tool.
Migration from Payara to Quarkus and microservices.
Test automation with Cypress and JUnit.
Operation and architecture of containerized platforms on Kubernetes and OpenShift.
Maintenance of microservices in Spring Boot with Kotlin.
Operation in a cloud environment with AWS and Azure.

Technologies used: Kubernetes, Red Hat OpenShift, Docker, ANT, Prometheus, Grafana, JavaEE, Microprofile, Microservices, JEE patterns, TypeScript, Angular, PrimeNG, Hibernate, PostgreSQL, H2, Payara, Cypress, Kafka, RabbitMQ, Jenkins, MapStruct, Maven, Swagger, OpenAPI, EclipseLink, Spring Boot, architecture patterns, Kotlin, CSS, data communication and transaction protocols.

Jan 2023 - Jul 2023

7 months

Software Architect & Senior Full-Stack Developer

Allianz

Focus: Fullstack, AWS, Messaging, Cloud modernization
Modernization of a B2B platform.
Close coordination with the business team and technical solution development in the team.
Messaging & integration with Apache ActiveMQ, Apache Kafka, and Apache Camel.
Operation and monitoring of microservice architectures on AWS.
Architecture work in a SAFe-based program structure with multiple teams.
Operation and architecture of containerized platforms on Kubernetes.
Implementation of infrastructure-as-code approaches for automated provisioning of cloud infrastructure on AWS.
Analysis and optimization of inter-service communication, latencies, and system behavior.
Architecture and optimization of event-driven communication and data processing flows based on Apache Kafka and Apache Camel.
Analysis and optimization of data flows between business systems as well as setup of scalable event streaming architectures.
Operation and further development of Kubernetes-based platforms in the cloud environment.

Technologies used: Kubernetes, Microservices, Docker, Prometheus, Grafana, JavaEE, Spring, TypeScript, Angular, Hibernate, Envers, PostgreSQL, H2, Payara, JSP, CSS, Servlet, Struts, automated tests, Karma, architecture patterns, Jasmine, Liquibase, BPM, Groovy, TOGAF, JEE patterns, OOA/OOD, Bitbucket, multicloud, AWS / Cloud, Kubernetes / Container Orchestration.

Jan 2022 - Dec 2022

1 year

Software Architect & Senior Full-Stack Developer

Federal Employment Agency and EY

Focus: Fullstack, integration, public systems
Development and testing of microservices for stakeholders from pension insurance, insurance companies, and public administration.
Implementation of integration and messaging patterns with Apache Camel and message brokers.
Operation and architecture of containerized platforms on Kubernetes.
Support in communication between business applications and platform teams.
Integration of messaging and processing flows in distributed system landscapes.
Integration of modern frontend platforms and headless-like architectures based on decoupled microservices and APIs
Development and execution of automated tests with JUnit as well as support for quality assurance and error analysis.
Work on CI/CD processes and DevOps-related development workflows in a Git-based environment.
Use of Jira and Confluence for requirement management, documentation, and sprint planning.
Development and integration of REST services as well as event-based interfaces with Kafka.
Version control with Git and GitHub as well as code reviews and build processes.
Quality assurance and static code analysis with SonarQube as well as artifact management via Nexus.
Design and implementation of event driven architectures based on Apache Kafka for communication between business applications and core services.
Building and further developing data and integration pipelines for processing and distributing business events in distributed system landscapes.
Analysis of business requirements and translation into technical event and integration models.

Technologies used: Kubernetes, Docker, Prometheus, Grafana, JavaEE, JEE pattern, MicroProfile, Microservices, Quarkus, OOA/OOD, Liquibase, Kafka, REST, Java, JUnit, TypeScript, JavaScript, React, Angular, CSS, npm/node, Stencil, Git, GitHub, Jira, Confluence, CI/CD, DevOps, SonarQube, Nexus, Karate, TOGAF model, Domain Driven Design, automated tests, OWASP, Arc42, BSI-TR-03107, cloud platforms, MapStruct, architecture patterns, Bitbucket, Loco, JMS / EAI (Apache Camel), data communication and transaction protocols, SQL Developer, SoapUI, Selenium, Eclipse, SVN, WebLogic Server.

Mar 2021 - Dec 2021

10 months

Software Architect & Senior Full-Stack Developer

Deutsche Bahn

Focus: Fullstack, cloud-native microservices, operations
Implementation of business requirements based on the development tools and libraries used.
Creation of delivery packages and support in the CI/CD context.
Consulting on architecture topics, quality gates, and team coordination.
Development and integration of REST services as well as event-based interfaces with Apache Kafka.
Execution of automated tests with JUnit, Selenium, and SoapUI as well as support for test automation.
Use of Jira and Confluence for sprint planning, documentation, and technical coordination.
Source code management via GitHub and SVN as well as artifact management with Nexus.
Quality assurance using SonarQube and execution of code reviews.
2nd-level support, root cause analysis, go-live support, and ITIL-related processes.
Operation and monitoring of microservice architectures in AWS environments.
Architecture and operation of containerized platforms on AWS as well as transfer to Kubernetes-based environments.
Analysis and migration of existing integration and messaging structures into event-driven architectures.
Implementation of API-based integration and test strategies in the microservice environment, including consumer/provider-oriented interface validation.

Technologies used: Technologies used (optimized for ATS), Java, Spring Boot 2, Spring Security, Spring, REST, Apache Kafka, Angular, JavaScript, JUnit, Selenium, SoapUI, CI/CD, DevOps, Jenkins, Nexus, SonarQube, GitHub, Git, SVN, Jira, Confluence, Oracle SQL Developer, SQL, Oracle, WebLogic Server, Docker, OpenShift, AWS, AWS Fargate, OAuth2, ActiveMQ, Swagger, OpenAPI 2.0, SAFe, IntelliJ, Eclipse, BPM, ITIL, PrimeNG, Monorepo, OWASP API Security, JMS / EAI (Apache Camel), Arc42, NgRx, data communication and transaction protocols.

Jul 2020 - Mar 2021

9 months

DEVOPS & Senior Full-Stack Developer

init SE

Focus: Backend, DevOps, migration
Conversion to multi-module build and JavaConfig.
Analysis of business topics and individual stories.
Migration from Spring Boot 1 to Spring Boot 2.
Implementation of Spring Boot modules with Netty.
Migration of over 700 modules from Java 7 to Java 8, including technical migration planning, build process adjustments, and release migrations.
Implementation of communication and integration architectures in the public transport / mobility context.

Technologies used: Java, Spring Boot 1/2, Spring Admin, Spring Cloud, JEE patterns, PostgreSQL, Docker, Jenkins, IntelliJ, Netty, Bamboo, Groovy, CI/CD, SVN, GitHub, OOA/OOD, offline capabilities, MapStruct, automated tests, data communication and transaction protocols.

Oct 2019 - Feb 2020

5 months

Senior Full-Stack Developer

Optima GmbH

Focus: Fullstack, portal platform, machine/system status
Creation of a central software solution for all business units of the Optima Group.
Implementation of predictive maintenance for service and maintenance.
Integration of third-party software.
Consulting on the Docker strategy and in the frontend layer.
Migration from Angular 2/3 to Angular 8.
Reactive development in Angular with streams and lambda.

Technologies used: Java, Spring Boot 1/2, Angular 4/2/8, CSS, Bootstrap, JSON, REST, PHP, Docker Swarm, Microsoft Azure, Docker, Spring Cloud, MySQL, Visual Studio, STS, Tomcat, Payara, JEST, Cypress, NgRx, Keycloak, GitHub, PowerShell, Scrum.

May 2019 - Sep 2019

5 months

Senior Full-Stack Developer

Süd-Leasing

Focus: Backend, microservices, integration
Implementation of Jira tickets and stories in a Scrum environment.
Development, testing, and further development of microservices and backend modules based on Java and Spring Boot.
Carrying out requirement analyses and creating technical solution designs.
Implementation of object-oriented analysis and object-oriented design (OOA/OOD).
Design and implementation of distributed systems based on microservices and service-oriented architectures (SOA).
Development and integration of REST and SOAP web services as well as Enterprise Application Integration (EAI) solutions for connecting heterogeneous systems.
Design and implementation of Message-Oriented Middleware integrations (JMS) with Apache Camel for system and process integration.
Analysis of business requirements and implementation of integration and interface concepts in an enterprise environment.
Creation and execution of automated unit, integration, and system tests.
Go-live support, quality assurance, and error analysis.
Analysis of business topics and individual stories.
Communication with business departments as well as documentation of results, interfaces, and services.
Contribution to build, deployment, and CI/CD processes.
Use of container technologies (Docker) for development and deployment of applications

Technologies used: Java 8, Spring Boot, Eureka, Spring Boot Admin, Solr, Angular 8, CSS, Node.js, Angular CLI, HTML, JMS / EAI (Apache Camel), SOAP-WS, REST-WS, JUnit, JMockit, IntelliJ, Selenium, Gradle, Spring Cloud, Docker, Microservices, GitHub, PowerShell, EAI, automated tests, Scrum, JEE patterns, CI/CD.

Jan 2019 - Apr 2019

4 months

Munich, Germany

Senior Full-Stack Developer

GEMA München

Focus: Full stack, integration scenarios, testing
Test-driven implementation of stories.
Pair programming and close collaboration within the project team.
Analysis of business topics and implementation of technical requirements.
Quality assurance through tests and code reviews.
Analysis and implementation of integration scenarios between backend services and enterprise systems.

Technologies used: Java 8, Spring Boot, DI, MVC, Integration, Batch, ElasticSearch 6.x, Angular 6, Handlebars, Node.js, Payara, Angular CLI, HTML, CSS, JMS / EAI (Tibco), Microservices, SOAP-WS, REST-WS, Kibana, JUnit, Mockito, Groovy, IntelliJ, Cucumber, Docker, Selenium, Gradle, UML (Enterprise Architect), OpenShift, Bitbucket, data communication and transaction protocols.

Aug 2018 - Dec 2018

5 months

Senior Full-Stack Developer

Senacor / Landesbank Berlin

Focus: Full stack, SAFe, cloud and microservices architecture
Planning, redevelopment, and enhancement of web-based applications with Spring Boot 2 and Angular 6.
Work in a scaled agile organization with multiple teams.
Alignment of architecture decisions in the context of cloud and microservices architectures.
Carrying out developer tests and contributing to integration tests.
Operation and monitoring of microservices architectures on AWS.
Experience with headless CMS-related architectures and API-based portal platforms in a banking environment.

Technologies used: Java, TypeScript, Spring, Spring Boot 2, Spring Eureka, Spring Security, Seal One, SIA, Angular 5/6, RxJS, Microservices, PostgreSQL, offline capabilities, MongoDB, cloud platforms, Tomcat, Node.js, NPM, IntelliJ, TDD/BDD, Bitbucket, TOGAF model, Docker, Scrum, Mockito, JUnit 5, Spring Cloud, NgRx, MapStruct, AWS, CI/CD, gRPC, Liquibase, OpenAPI / Swagger, SAFe, multicloud, Keycloak.

Mar 2018 - Nov 2018

9 months

Senior Full-Stack Developer

Berlin-Chemie

Focus: Full stack, architecture, operations
Development and enhancement of web-based applications with Spring Boot 2 and Angular 6.
Requirement analyses and development of software concepts.
Planning and coordination of internal developers.
Carrying out developer tests and contributing to integration tests.
CI pipeline in GitLab and last-level support.
Analysis and migration of existing ANT builds to Maven, including adjustments to dependency management and build processes.
Support with release changes and deployment processes.
Support of CI/CD pipelines in an enterprise environment.
Deployment of applications on Tomcat- and Kubernetes-based platforms.

Technologies used: Java, TypeScript, Spring, Spring Boot 2, Spring Security, AngularJS, Angular 6, CSS, ANT, Keycloak, Bitbucket, OOA/OOD, Oracle 12, Tomcat, Node.js, NPM, Bower, IntelliJ, Docker, Kubernetes, CI/CD.

Aug 2017 - Dec 2017

5 months

Senior Full-Stack Developer

Porsche / MHP

Focus: Full stack, module development, rollout
Further development of an existing cPlace platform.
Development and implementation of modules and features.
Deployment and rollout.
Analysis and use of software architecture.

Technologies used: Java J2E, IntelliJ, ElasticSearch, HSQLDB, MySQL, SQL, cPlace, Angular 2, CSS, JEE patterns, Tomcat, Jetty, Jenkins, automated tests, Jira.

Oct 2016 - Aug 2017

11 months

IT Architecture and Software Development

T-Systems

Focus: Backend, Microservices
Architecture and implementation of microservices according to guidelines and requirements.
Distribution of development tasks via JIRA.
Review of results and support for staff planning.
Development and debugging of Java enterprise applications with Eclipse.
Deployment and configuration of applications on JBoss Application Server.
Build and dependency management with Maven and Ant.
Support in application management and release changes.

Used technologies: Spring Boot, Spring Netflix Cloud, web services (REST), Eclipse, JBoss, Jenkins, Jira, Confluence, Scrum, Git, GitHub, Subversion, JUnit, PostgreSQL, Postman Plugin, Docker, CI/CD, automated tests.

Sep 2015 - Sep 2016

1 year 1 month

Hybrid

IT Senior Developer

T-Systems

Focus: Full stack
Implementation and migration of use cases based on business documents.
Coordination of the interface between the JSF application and the mainframe.
Work in a SAFe-oriented organization with multiple teams.
Carrying out developer tests and documenting changes.
Development and maintenance of applications in the IBM WebSphere Application Server environment.
Carrying out release changes and technical deployments.
Support in 2nd-level support and incident analysis.
Creating technical documentation and specifications close to requirement documents.
Designing security architectures including authentication, authorization, encryption, and security concepts close to PKI.
Setting up and using central logging and monitoring solutions based on the Elastic Stack (ELK).

Used technologies: AngularJS, Sonar, JSF 2, JEE patterns, IBM WebSphere Application Server, jQuery, Eclipse Mars, REST web service, Jersey, JSON, Jackson, PAI, J2EE 1.4, EJB 2.5, SAFe, Node.js, GitHub, CSS, Servlets, Struts, JEE 1.7, Azure, BITV, designing security architectures including authentication, authorization, encryption, and security concepts close to PKI, setting up and using central logging and monitoring solutions based on the Elastic Stack (ELK).

May 2015 - Sep 2015

5 months

IT Senior Developer

Mercedes-Benz AG

Focus: Full stack
Creation of a proof of concept in the leasing area for Sweden and Poland.
Development and technology evaluation.
Configuration of Maven and the application server.
Design of a security architecture.
Integration of frontend and backend.
Testing of web services.
Build management and automated builds with Maven and Ant.
Configuration and deployment of applications on JBoss/WildFly.
Creation of technical concepts and security requirements.

Used technologies: Java 7, Documentum with Oracle backend, Tomcat 7, JBoss/WildFly 7/6, CVS, Eclipse, GitHub, NetBeans, Selenium, OpenID Connect, OAuth 2, JWT, Struts, CSS.

Jan 2015 - Apr 2015

4 months

Hybrid

IT Senior Developer

Adcubum AG

Focus: Backend
Backend development and maintenance of the insurance software Syrius for the specific business domain.
Development and maintenance of Java enterprise applications with Eclipse.
Deployment and operation on JBoss/WildFly application servers.
Support in the incident and error analysis process.

Used technologies: J2EE 1.4, web services (SOAP and REST), Docker, Eclipse, JBoss/WildFly, Jenkins, OOA/OOD, Jira, Confluence, Scrum, Oracle database, Git, GitHub, Subversion, JUnit, ElasticSearch, automated tests, MapStruct, Struts.

Jan 2013 - Dec 2014

2 years

Kornwestheim, Germany

Hybrid

IT Senior Developer

Landesamt für Geoinformation und Landentwicklung

Focus: Frontend
FIONA is an internet service for farmers in Baden-Württemberg to help them submit applications for agricultural subsidies electronically.
Creation of architecture artifacts for FIONA, including process descriptions in BPMN, use case diagrams according to UML 2, and user stories.
Programming and maintenance of the FIONA system.
Interface development with Apache ActiveMQ.

Used technologies: Java 1.6 / 1.7, JSF 2, OOA/OOD, responsive, Spring, PrimeFaces, Maven, Hibernate, Subversion, Eclipse, JavaScript, CSS, PostgreSQL, Tomcat 6 / 7, REST, Jenkins, Selenium, QFTest, Jira.

Jan 2010 - Dec 2013

4 years

Ludwigsburg, Germany

On-site

IT Senior Developer

Wüstenrot und Württembergische

Focus: Frontend
Implementation of a unified and consistent advisory software for the field sales team of an insurance company and building society.
Design and implementation of the application based on a generic framework.
Implementation of the interfaces to agency and application systems as well as external calculation engines.
Development of an innovative user interface for tablet and laptop.
Development of a content library with approaches close to a headless CMS for the flexible management of product and tariff content.

Technologies used: Java EE, Hibernate, GWT, Vaadin, Spring Framework, DB2, HTML/CSS, OOA/OOD, JUnit, WebSphere, Tomcat 7, Spring.

Industry Experience

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

Experienced in Insurance, Government and Administration, Information Technology, Banking and Finance, Agriculture, and Transportation.

Insurance

Government and Administration

Information Technology

Banking and Finance

Agriculture

Transportation

Business Area Experience

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

Experienced in Information Technology, Operations, Product Development, Project Management, and Quality Assurance.

Information Technology

Operations

Product Development

Project Management

Quality Assurance

Summary

Experienced software architect and developer with a focus on cloud-native backend systems, event-driven architectures, data and integration platforms, Kubernetes platforms, and the modernization of complex enterprise landscapes. Many years of experience in AWS, Kubernetes, and SAFe environments, as well as technical responsibility for architecture, implementation, and operations. In addition, extensive experience in business analysis, requirements management, and the design of distributed data and processing systems.

Skills

Basics Of Software Architectures
Role And Responsibilities
Requirements For Architectures, Architecture Goals
Quality Requirements And Goals
Components/Building Blocks And Their Interfaces And Dependencies
Cross-Cutting/Technical Concepts
Documentation And Communication Of Architectures

Languages

German

Native

Turkish

Advanced

English

Intermediate

Education

Oct 2007 - Sep 2010

Heidenheim Cooperative State University Baden-Württemberg

Bachelor of Science · Business Informatics · Heidenheim, Germany · 2.4

Certifications & licenses

AWS Certified Solutions Architect – Associate

IBM Certified Application Developer RAD v7

Oracle Certified Associate Java Programmer

SAP TERP 10

Statistics

Experience

Total positions 21

Experience in Insurance 7 y

Avg length 10 m

Longest experience 3 y 11 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Co-Founder & Lead Software Architect, Software Architect & Senior Full-Stack Developer, DEVOPS & Senior Full-Stack Developer

Main industries Insurance, Government and Administration, Information Technology

Main business areas Information Technology, Operations, Product Development

Qualifications

Highest degree Bachelor

Certifications earned 4

Profile

Created

July 2026

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Frequently asked questions

Have questions? Find more information here.

Where is Sercan based?

Sercan is based in Esslingen am Neckar, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Sercan speak?

Sercan speaks the following languages: German (Native), Turkish (Advanced), English (Intermediate).

How many years of experience does Sercan have?

Sercan has at least 16 years of experience. During this time, Sercan has worked in at least 6 different roles and for 20 different companies. The average length of individual experience is 1 year and 9 months. Note that Sercan may not have shared all experience and actually has more experience.

What roles would Sercan be best suited for?

Based on recent experience, Sercan would be well-suited for roles such as: Co-Founder & Lead Software Architect, Software Architect & Senior Full-Stack Developer, DEVOPS & Senior Full-Stack Developer.

What is Sercan's latest experience?

Sercan's most recent position is Co-Founder & Lead Software Architect at Pflege-Pfad.

What companies has Sercan worked for in recent years?

In recent years, Sercan has worked for Pflege-Pfad, Deutsche Rentenversicherung, Landesamt für Geoinformation und Landentwicklung (LGL), Informationstechnikzentrum Bund (ITZ Bund), and Etict.

Which industries is Sercan most experienced in?

Sercan is most experienced in industries like Insurance, Government and Administration, and Banking and Finance. Sercan also has some experience in Information Technology, Agriculture, and Transportation.

Which business areas is Sercan most experienced in?

Sercan is most experienced in business areas like Information Technology, Operations, and Product Development. Sercan also has some experience in Project Management and Quality Assurance.

Which industries has Sercan worked in recently?

Sercan has recently worked in industries like Government and Administration, Insurance, and Information Technology.

Which business areas has Sercan worked in recently?

Sercan has recently worked in business areas like Information Technology, Operations, and Quality Assurance.

What is Sercan's education?

Sercan holds a Bachelor in Business Informatics from Heidenheim Cooperative State University Baden-Württemberg.

Does Sercan have any certificates?

Sercan has 4 certificates. Among them, these include: AWS Certified Solutions Architect – Associate, IBM Certified Application Developer RAD v7, and Oracle Certified Associate Java Programmer.

What is the availability of Sercan?

Sercan is immediately available full-time for suitable projects.

What is the rate of Sercan?

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