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I'm a software engineer specializing in scalable microservices, AI integrations, and end-to-end DevOps pipelines. I enjoy turning complex requirements into clean, maintainable systems that teams love to work on. Over the years I’ve built and modernized microservices stacks in Java, Spring Boot, Kafka, and cloud-native infrastructure, and I’ve guided teams through migrations, CI/CD automation, and production-grade AI integrations.…I'm a software engineer specializing in scalable microservices, AI integrations, and end-to-end DevOps pipelines. I enjoy turning complex requirements into clean, maintainable systems that teams love to work on. Over the years I’ve built and modernized microservices stacks in Java, Spring Boot, Kafka, and cloud-native infrastructure, and I’ve guided teams through migrations, CI/CD automation, and production-grade AI integrations.

Ioannis S. Papachimonas

Full Stack Developer, Web Developer, DevOps Developer, +3

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I'm a software engineer specializing in scalable microservices, AI integrations, and end-to-end DevOps pipelines. I enjoy turning complex requirements into clean, maintainable systems that teams love to work on. Over the years I’ve built and modernized microservices stacks in Java, Spring Boot, Kafka, and cloud-native infrastructure, and I’ve guided teams through migrations, CI/CD automation, and production-grade AI integrations.…I'm a software engineer specializing in scalable microservices, AI integrations, and end-to-end DevOps pipelines. I enjoy turning complex requirements into clean, maintainable systems that teams love to work on. Over the years I’ve built and modernized microservices stacks in Java, Spring Boot, Kafka, and cloud-native infrastructure, and I’ve guided teams through migrations, CI/CD automation, and production-grade AI integrations.

Available to hire

I’m a software engineer specializing in scalable microservices, AI integrations, and end-to-end DevOps pipelines. I enjoy turning complex requirements into clean, maintainable systems that teams love to work on.

Over the years I’ve built and modernized microservices stacks in Java, Spring Boot, Kafka, and cloud-native infrastructure, and I’ve guided teams through migrations, CI/CD automation, and production-grade AI integrations.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Greek, Modern

Fluent

English

Fluent

Italian

Advanced

Spanish; Castilian

Advanced

German

Intermediate

Work Experience

Software Engineer at iKnowHow SA

January 31, 2025 - January 31, 2025

Worked with Java, Spring Boot, Angular, Spring Cloud, and Python; contributed to the company’s first microservices implementation to improve scalability; enhanced system integrations and NLP-enabled AI capabilities; developed finance/HR web applications and a production-grade Python web app; trained client personnel for smoother product adoption.

Software Engineer at iKnowHow SA

January 1, 2025 - January 1, 2025

Worked across Java, Spring Boot, Angular, Spring Cloud, PrimeNG, Python, spaCy, FastAPI, PostgreSQL, DB2, Oracle PL/SQL, FileNet, Maven, Hibernate. Contributed to the company’s first microservices architecture, enhancing scalability and development speed. Built Java-based algorithms and pipelines to improve system-to-system communication. Delivered the first production-grade Python web app, expanding the tech stack. Trained client personnel to operate the systems, reducing support requests.

Software Engineer at Public SA

January 1, 2025 - October 28, 2025

Contributed to upgrading microservices to Java 21, Spring Boot 3, and MongoDB v8; refactored services for cleaner architecture; led migration from ActiveMQ to Apache Kafka; architected CI/CD and OpenShift infrastructure for end-to-end test automation; implemented a Redis-backed distributed locking mechanism to prevent race conditions and improve reliability.

Project Manager - Linguist at Haymillian, Authorwave, ACM Translations (self-employed)

May 31, 2022 - May 31, 2022

Introduced new service portfolios including accessibility services and additional languages; automated workflows with JavaScript and PMS tools; led onboarding and management of freelance teams and integrated them into company workflows.

Project Manager - Linguist at Haymillian, Authorwave, ACM Translations (self-employed)

May 1, 2022 - May 1, 2022

Introduced new service portfolios including accessibility services and additional languages, driving growth. Automated workflows using JavaScript and PMS tools to improve operational efficiency. Led onboarding and management of freelance teams, optimizing resource allocation and integration into company workflows.