Open to opportunities

onder sezgin

@ondersezgin

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Freelance Technical Architect and Software Engineer with 10+ years experience.

United Kingdom

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What I'm looking for

I am seeking opportunities that allow me to leverage my expertise in cloud-native solutions and DevOps practices while contributing to innovative projects in dynamic environments.

I am a results-driven Freelance Technical Architect and Software Engineer with over 10 years of experience in delivering scalable, cloud-native, and enterprise-grade solutions. My extensive background includes working with both UK public sector organizations and private enterprises, where I have led digital transformation initiatives and modernized legacy applications. I specialize in optimizing CI/CD pipelines, cloud migrations, and enterprise integrations while ensuring compliance with industry standards.

Throughout my career, I have demonstrated proven expertise in consultancy engagements across various sectors, including telecom, finance, and retail. My hands-on proficiency spans software development, full-stack engineering, and high-performance system architecture. I am particularly skilled in cloud-native architectures and automation-driven deployments, with deep knowledge of technologies such as Java, Spring Boot, AWS, Azure, and Kubernetes.

Experience

Work history, roles, and key accomplishments

Current

PMC Member and Committer

Current

Apache Software Foundation

Dec 2016 - Present (8 years 5 months)

Active contributor to the Apache Camel Integration Framework, enhancing functionality and performance through the development of multiple components.

Apache Camel Software Development Performance Optimization

Performance Tuning Consultant

Freelance

Mar 2023 - Apr 2023 (1 month)

Conducted performance tuning for Hadoop and Spark clusters in the banking sector, optimizing resource utilization and improving data processing speeds significantly.

Hadoop Spark Performance Tuning AppDynamics Java Benchmarking Profiling

Senior Consultant – Cloud & Hybrid Platforms Integration

Freelance

Feb 2023 - Mar 2023 (1 month)

Assisted a Nordic Internet TV provider in migrating workloads to Azure Red Hat OpenShift, implementing containerization strategies and enhancing security with LDAP and Azure AD integration.

Azure OpenShift GitOps ArgoCD LDAP Security Containerization Kubernetes

Senior Solution Integration Consultant

Freelance

Apr 2022 - Feb 2023 (10 months)

Led the development of a large-scale IoT device management platform, enhancing scalability and integrating monitoring solutions. Provided technical leadership and developed a BDD test framework.

IoT Microservices Docker Prometheus Grafana Python BDD Performance Optimization

Senior SW Engineer & DevOps Consultant

Polyevolv Consultancy Services

Nov 2022 - Dec 2022 (1 month)

Provided application modernization and DevOps consulting for UK public sector projects. Migrated applications to Red Hat OpenShift, refactored Jenkins pipelines, and implemented automated deployment strategies using Helm and Ansible.