With nearly two decades of experience designing and building high-performance backend systems, my skills and qualifications are in direct alignment with the requirements of this role. My career has been centered on a strong proficiency in Java, with a particular focus on Spring Boot framework for building scalable microservices architectures. I have extensive experience designing and implementing clean, efficient RESTful APIs, Kafka (including KStreams) that serve as the backbone for complex applications. My deep understanding of software architecture, refined over 20 years, allows me to create solutions that are not only powerful and reliable but also maintainable. This expertise is complemented by my hands-on experience with containerization and cloud-native technologies. I am highly proficient in the DevOps lifecycle, from containerizing applications with Docker to managing complex deployments and orchestration with Kubernetes (K8s). My familiarity with tools like Helm ensures an automated, reliable, and auditable deployment process. Throughout my career, I have consistently demonstrated excellent problem-solving and debugging skills, allowing me to swiftly identify and resolve critical production issues. My strong communication and collaboration abilities have been essential in working with cross-functional teams to define requirements, contribute to architectural decisions, and deliver high-quality software. I am confident that my technical expertise and extensive experience make me an ideal candidate to contribute significantly to your team. I am eager to bring my skills to this job opportunity and help build the next generation of your financial systems. Thank you for your time and consideration. I have attached my resume for your detailed review and look forward to the opportunity to discuss my application with you further. Sincerely, Antonio Casado

Antonio Casado

With nearly two decades of experience designing and building high-performance backend systems, my skills and qualifications are in direct alignment with the requirements of this role. My career has been centered on a strong proficiency in Java, with a particular focus on Spring Boot framework for building scalable microservices architectures. I have extensive experience designing and implementing clean, efficient RESTful APIs, Kafka (including KStreams) that serve as the backbone for complex applications. My deep understanding of software architecture, refined over 20 years, allows me to create solutions that are not only powerful and reliable but also maintainable. This expertise is complemented by my hands-on experience with containerization and cloud-native technologies. I am highly proficient in the DevOps lifecycle, from containerizing applications with Docker to managing complex deployments and orchestration with Kubernetes (K8s). My familiarity with tools like Helm ensures an automated, reliable, and auditable deployment process. Throughout my career, I have consistently demonstrated excellent problem-solving and debugging skills, allowing me to swiftly identify and resolve critical production issues. My strong communication and collaboration abilities have been essential in working with cross-functional teams to define requirements, contribute to architectural decisions, and deliver high-quality software. I am confident that my technical expertise and extensive experience make me an ideal candidate to contribute significantly to your team. I am eager to bring my skills to this job opportunity and help build the next generation of your financial systems. Thank you for your time and consideration. I have attached my resume for your detailed review and look forward to the opportunity to discuss my application with you further. Sincerely, Antonio Casado

Available to hire

With nearly two decades of experience designing and building high-performance backend systems, my skills and qualifications are in direct alignment with the requirements of this role.

My career has been centered on a strong proficiency in Java, with a particular focus on Spring Boot framework for building scalable microservices architectures. I have extensive experience designing and implementing clean, efficient RESTful APIs, Kafka (including KStreams) that serve as the backbone for complex applications.

My deep understanding of software architecture, refined over 20 years, allows me to create solutions that are not only powerful and reliable but also maintainable. This expertise is complemented by my hands-on experience with containerization and cloud-native technologies.

I am highly proficient in the DevOps lifecycle, from containerizing applications with Docker to managing complex deployments and orchestration with Kubernetes (K8s). My familiarity with tools like Helm ensures an automated, reliable, and auditable deployment process.

Throughout my career, I have consistently demonstrated excellent problem-solving and debugging skills, allowing me to swiftly identify and resolve critical production issues. My strong communication and collaboration abilities have been essential in working with cross-functional teams to define requirements, contribute to architectural decisions, and deliver high-quality software.

I am confident that my technical expertise and extensive experience make me an ideal candidate to contribute significantly to your team. I am eager to bring my skills to this job opportunity and help build the next generation of your financial systems.

Thank you for your time and consideration. I have attached my resume for your detailed review and look forward to the opportunity to discuss my application with you further.

Sincerely,
Antonio Casado

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Experience Level

Expert
Expert
Expert
Expert
Expert

Language

English
Fluent
German
Advanced
Spanish; Castilian
Fluent

Work Experience

Freelance Software Engineer at Self-Employed
March 1, 2024 - Present
Design and develop data integration services using Spring Boot microservices on AKS, ensuring strict adherence to functional requirements. Database development: implement complex data persistence layers using PostgreSQL, optimizing SQL queries for high-volume data processing. CI/CD & testing: maintain automated pipelines (Jenkins/GitLab) and enforce unit test coverage to support continuous integration. Produce architecture documentation (blueprints, ADRs, interface specs, data models) and guide teams on EA standards and architecture debt reduction.
Senior Software Engineer at Ippen-Digital
December 1, 2020 - May 1, 2022
Customer Data Platform: Java 15, Spring Boot, ELK, Kafka/RabbitMQ, Spring GraphQL. Microservices design: unified customer data platform with real-time streaming via Kafka. API Development: RESTful APIs. Data Integrity: improved data quality through rigorous testing and data enrichment flows. Agile Collaboration: worked in an Agile environment with cross-functional teams to refine backlogs and deliver features.
Senior Software Engineer at Deutsche Automobil Treuhand
January 1, 2016 - January 1, 2018
Delivered a web-based IAM solution; designed clear service boundaries and inter-service contracts; introduced security architecture using OAuth/OpenID and Spring Security; ensured quality gates, documentation, and alignment to enterprise standards.
Senior Software Engineer at IAM (Daimler)
February 1, 2018 - June 1, 2018
JEE7, WebSphere, Spring Boot. Led delivery of a web-based IAM solution; ensured quality gates, documentation, and alignment to enterprise standards.
Senior Software Engineer at Siemens Polarion
August 1, 2014 - August 1, 2015
Delivered features for Polarion ALM and designed Polarion NEXT (microservices-based ALM); streamlined SDLC with Agile practices.

Education

Master's Degree in Communications and Technology Management at EOI Business School
January 1, 1996 - December 1, 1996
Bachelor's Degree in Computer Science (Software Development & Artificial Intelligence) at University of Granada
September 1, 1990 - December 1, 1996

Qualifications

Data Modelling in MongoDB
October 1, 2025 - April 7, 2026
GraphQL for Enterprise Developers (LinkedIn Certificate)
October 1, 2025 - April 7, 2026
Azure Kubernetes Service (AKS) Deployments
September 1, 2025 - April 7, 2026
Cloud Fundamentals: Cloud Services
August 1, 2025 - April 7, 2026
Kubernetes & Docker Certification
May 1, 2025 - April 7, 2026

Industry Experience

Financial Services, Healthcare, Transportation & Logistics, Professional Services, Software & Internet