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Stelios Anastasakis

PROFILE

Stelios Anastasakis

Over six months, Stelios contributed to the eugenp/tutorials and Baeldung/scala-tutorials repositories by building robust frameworks for performance testing, configuration management, and AI-driven automation. He developed Gatling-based load testing modules with real-time monitoring using Scala, Java, and Docker, integrating Prometheus and Grafana for performance visibility. Stelios also engineered a property mutator framework to automate configuration changes across formats, and delivered a sentiment analysis integration leveraging Apache Camel, KServe, and Triton Server for real-time inference. His work culminated in a Spring AI agentic workflow module, establishing reusable patterns for code review and deployment orchestration, demonstrating strong depth in backend engineering.

Overall Statistics

Feature vs Bugs

83%Features

Repository Contributions

7Total
Bugs
1
Commits
7
Features
5
Lines of code
4,846
Activity Months6

Work History

October 2025

1 Commits • 1 Features

Oct 1, 2025

Month 2025-10 summary: Delivered the Spring AI Agentic Workflow Framework module within the Spring AI ecosystem, establishing agentic AI workflow patterns (chain, parallelization, routing, orchestrator-workers, evaluator-optimizer) and integrating interfaces, prompts, and concrete workflows for code review, operational tasks, and deployment orchestration. This work lays the foundation for enterprise-grade AI-driven automation, enabling faster decision cycles, consistent execution, and reduced manual toil in development and operations.

August 2025

1 Commits • 1 Features

Aug 1, 2025

Summary for 2025-08: Delivered a new Sentiment Analysis Integration module in the eugenp/tutorials repository that wires Apache Camel with KServe via a Triton Inference Server to perform sentence-level sentiment classification. The work includes a Java sentiment service, REST endpoint, and Docker deployment configurations, enabling scalable, containerized deployment and real-time analytics workflows.

May 2025

1 Commits • 1 Features

May 1, 2025

In May 2025, delivered a cross-format Property Mutator Framework enabling programmatic, user-facing configuration changes across common configuration formats (.properties, XML). The work includes mutator implementations, a properties loading utility, and unit tests, leveraging Apache Commons, the Java Files API, and File Streams. This foundation improves automation readiness and consistency of configuration edits across formats, reducing manual effort and error-prone changes. No major bugs fixed this month. Overall, the effort enhances configuration management efficiency and accelerates feature iteration with better test coverage.

April 2025

1 Commits • 1 Features

Apr 1, 2025

April 2025: Delivered a comprehensive Gatling-based load testing framework with real-time monitoring and performance endpoints in the eugenp/tutorials repository. The work established end-to-end performance testing capabilities, integrated with Prometheus, Grafana, and InfluxDB, and included Dockerized monitoring services, metric-exposed Gatling simulations, and new performance API endpoints. Refactoring improved readability and maintainability of simulations, enabling faster iteration and reliable performance baselines.

January 2025

1 Commits

Jan 1, 2025

January 2025 (Baeldung/scala-tutorials) monthly summary focused on aligning test automation with API changes.

December 2024

2 Commits • 1 Features

Dec 1, 2024

December 2024 monthly summary for Baeldung/scala-tutorials focused on expanding performance validation capabilities and groundwork for scalable testing. Key features delivered: - Gatling Performance Testing Module for Scala Tutorials: Introduced a Gatling module with build configuration, dependencies, a dedicated simulation class, and helper utilities to enable load and performance testing against a server under steady load. Major bugs fixed: - No major bugs fixed this month based on the provided data. Overall impact and accomplishments: - Added a robust, reusable performance testing capability for Scala tutorials, enabling early detection of performance regressions and helping ensure reliability under load. - Paved the way for CI-friendly performance validation and repeatable load tests in the development workflow. Technologies/skills demonstrated: - Gatling, Scala, load testing, build configuration and dependency management, test automation, performance metrics assertions. Top 3-5 achievements: 1) Implemented Gatling module and dedicated simulation class for scalable performance testing. 2) Established build config and dependencies for Gatling integration. 3) Implemented assertions for response times, success rates, and requests per second to quantify performance. 4) Created reusable helpers and utilities to simplify future load-testing scenarios. 5) Linked changes to commits 918c612bfe404d8610d57ab5c3bf96f66ffc8002 and 3d195408e17ba9762ae481e5e2ba7dad0f6caf46 (SCALA-568).

Activity

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Quality Metrics

Correctness90.0%
Maintainability85.8%
Architecture88.6%
Performance84.2%
AI Usage28.6%

Skills & Technologies

Programming Languages

DockerfileJavaMarkdownProtobufSBTScalaShellYAML

Technical Skills

AI Agent DesignAPI DevelopmentAPI TestingApache CamelBuild ConfigurationCI/CD AutomationCode Review AutomationDockerFile I/OGatlingGrafanaInfluxDBJavaKServeLoad Testing

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

eugenp/tutorials

Apr 2025 Oct 2025
4 Months active

Languages Used

DockerfileJavaShellYAMLMarkdownProtobuf

Technical Skills

API DevelopmentDockerGatlingGrafanaInfluxDBLoad Testing

Baeldung/scala-tutorials

Dec 2024 Jan 2025
2 Months active

Languages Used

SBTScala

Technical Skills

Build ConfigurationGatlingLoad TestingPerformance TestingScalaAPI Testing

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