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Panagiotis MaroulIdis

@panagiotismaroulidis

Senior Backend Engineer at Kpler building maritime data pipelines that process millions of records and improve API response times by up to 6x.

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At Kpler, I work on backend services and data pipelines for large-scale maritime data, using Java, Spring Boot, Scala, Python, and Kafka. I built and maintained real-time and batch processing flows handling millions of records, keeping data reliable and fresh for downstream services.

I’ve used production metrics and profiling to identify API and database bottlenecks, improving response times by up to 6x in some cases. I also take part in the design and evolution of event-driven systems, alongside technical design, code reviews, and production troubleshooting.

At NET2GRID, I built and evolved backend systems and APIs for production applications, contributing to product and technical design decisions. Earlier, as a Web Developer Intern at Sigmasoft S.A., I integrated ERP systems with Magento applications through PHP components and REST-based integrations with C# services.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Engineer

Current

Kpler

Apr 2024 - Present (2 years 7 months)

Working on backend services and data pipelines for large-scale maritime data, using Java, Spring Boot, Scala, Python, and Kafka. Built and maintained real-time and batch processing flows handling millions of records, improving API and database performance by up to 6x.

Java Spring Boot Scala Python Kafka Kafka Streams Event Driven Architecture AWS Kubernetes PostgreSQL Distributed Systems Performance Optimization

Senior Backend Engineer

NET2GRID

Feb 2020 - Mar 2024 (4 years 1 month)

Built and evolved backend systems and APIs powering production applications, with emphasis on reliability, maintainability, and scalability. Contributed to product and technical design decisions, translating customer and business requirements into backend solutions.

Backend Development REST APIs Async Messaging Relational Databases Cloud Infrastructure Containerization Docker Kubernetes

Web Developer Intern

Sigmasoft S.A.

Jul 2017 - Oct 2017 (3 months)

Integrated ERP systems with Magento e-commerce applications, developing PHP components and REST-based integrations with C# services.

PHP Magento REST APIs C#ERP Integration

Education

Degrees, certifications, and relevant coursework

Aristotle University of Thessaloniki

Master of Science, Interactive Technologies of Software and Hardware

2019 - 2022

M.Sc. in Interactive Technologies of Software and Hardware from Aristotle University of Thessaloniki, 2019-2022.

Aristotle University of Thessaloniki

Bachelor of Science, Computer Science

2013 - 2019

B.Sc. in Computer Science from Aristotle University of Thessaloniki, 2013-2019. Academic work included Python-based time-series forecasting and data visualization; research presented at SmartCom Conference.