bounswe/bounswe2025group5
Apr 2025 – Dec 2025
6 Months active
Languages Used
BatchJavaPowerShellSQLShellXMLpropertiesCSS
Technical Skills
API DesignAPI DevelopmentAPI IntegrationAuthenticationBackend DevelopmentBug Fixing
Cengizhan
PROFILE
Cengizhan
Cengiz Bilal Sari developed and maintained the backend for bounswe2025group5, delivering over 100 features and 25 bug fixes in six months. He architected a modular Spring Boot system with robust authentication, RESTful APIs, and domain-driven design, integrating technologies like Java, Docker, and AWS S3 for scalable deployment and secure media storage. His work included implementing JWT-based authentication, semantic search with Wikidata, and challenge workflows, while aligning database schemas and expanding test coverage. By focusing on code organization, exception handling, and deployment readiness, Cengiz ensured the platform’s reliability, maintainability, and production scalability, addressing both business requirements and developer experience.
Overall Statistics
Feature vs Bugs
80%Features
Repository Contributions
217Total
Bugs
25
Commits
217
Features
100
Lines of code
21,749
Activity Months6
Your Network
14 peopleShared Repositories
14
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Work History
December 2025
31 Commits • 11 Features
Dec 1, 2025December 2025 monthly summary for bounswe/bounswe2025group5: A backend-focused month delivering a cohesive set of features, data model enhancements, and reliability improvements to enable a scalable challenge workflow, improved reporting integrity, and stronger security. The work emphasizes business value through robust data models, better governance, and expanded test coverage, laying groundwork for future features and scale.
31 Commits • 11 Features
Dec 1, 2025December 2025 monthly summary for bounswe/bounswe2025group5: A backend-focused month delivering a cohesive set of features, data model enhancements, and reliability improvements to enable a scalable challenge workflow, improved reporting integrity, and stronger security. The work emphasizes business value through robust data models, better governance, and expanded test coverage, laying groundwork for future features and scale.
December 2025
November 2025
33 Commits • 17 Features
Nov 1, 2025Month: 2025-11 — Concise, business-value oriented monthly summary for bounswe/bounswe2025group5 highlighting end-to-end feature delivery, robustness improvements, expanded test coverage, and deployment readiness. The work focused on delivering core social capabilities, aligning the database schema, hardening error handling, and accelerating production-readiness with environment/config improvements and scaffolding for future features.
November 2025
33 Commits • 17 Features
Nov 1, 2025Month: 2025-11 — Concise, business-value oriented monthly summary for bounswe/bounswe2025group5 highlighting end-to-end feature delivery, robustness improvements, expanded test coverage, and deployment readiness. The work focused on delivering core social capabilities, aligning the database schema, hardening error handling, and accelerating production-readiness with environment/config improvements and scaffolding for future features.
October 2025
62 Commits • 20 Features
Oct 1, 2025October 2025 performance summary for bounswe/bounswe2025group5: Delivered security, API quality, and backend reliability improvements that drive business value and accelerate feature delivery. Implemented a JWT-based authentication system with a dedicated refresh-token service and DB persistence, featuring transactional token generation and updated login/refresh endpoints. Standardized REST endpoints across auth, challenge, and profile controllers to improve consistency, testability, and client integration. Reorganized security configuration and project structure, with updated Docker/Maven setup and repository hygiene to simplify maintenance and onboarding. Refactored waste management backend to align waste goal and waste log endpoints and data models, enabling reliable metrics and monthly data retrieval. Executed targeted bug fixes that reduce runtime issues and improve API reliability (mapping name conflicts, waste endpoint validation, profile parameter handling, and endpoint path routing). Additional groundwork includes semantic search scaffolding and vector DB integration, plus deployment refinements for better observability and scalability.
62 Commits • 20 Features
Oct 1, 2025October 2025 performance summary for bounswe/bounswe2025group5: Delivered security, API quality, and backend reliability improvements that drive business value and accelerate feature delivery. Implemented a JWT-based authentication system with a dedicated refresh-token service and DB persistence, featuring transactional token generation and updated login/refresh endpoints. Standardized REST endpoints across auth, challenge, and profile controllers to improve consistency, testability, and client integration. Reorganized security configuration and project structure, with updated Docker/Maven setup and repository hygiene to simplify maintenance and onboarding. Refactored waste management backend to align waste goal and waste log endpoints and data models, enabling reliable metrics and monthly data retrieval. Executed targeted bug fixes that reduce runtime issues and improve API reliability (mapping name conflicts, waste endpoint validation, profile parameter handling, and endpoint path routing). Additional groundwork includes semantic search scaffolding and vector DB integration, plus deployment refinements for better observability and scalability.
October 2025
September 2025
3 Commits • 2 Features
Sep 1, 2025September 2025 (2025-09) monthly summary focusing on foundational architecture, repository governance, and CI/CD readiness to enable rapid, scalable feature delivery.
September 2025
3 Commits • 2 Features
Sep 1, 2025September 2025 (2025-09) monthly summary focusing on foundational architecture, repository governance, and CI/CD readiness to enable rapid, scalable feature delivery.
May 2025
39 Commits • 27 Features
May 1, 2025May 2025 monthly summary for bounswe/bounswe2025group5. Focused on containerization, API surface expansion, and media/storage capabilities to enable scalable deployment, richer user engagement, and reliable operations. Delivered several backend features and stabilizing fixes that directly map to business value and client experience.
39 Commits • 27 Features
May 1, 2025May 2025 monthly summary for bounswe/bounswe2025group5. Focused on containerization, API surface expansion, and media/storage capabilities to enable scalable deployment, richer user engagement, and reliable operations. Delivered several backend features and stabilizing fixes that directly map to business value and client experience.
May 2025
April 2025
49 Commits • 23 Features
Apr 1, 2025In April 2025, the backend for bounswe2025group5 was established with a scalable, domain-driven Spring Boot architecture. Delivered end-to-end authentication, a comprehensive set of domain modules (User, Profile, Notification, Reward, Waste, Logs, Goals), API quality improvements, and Wikidata-enabled semantic search groundwork. The team also corrected critical business logic in the waste/reward flow and set up robust exception handling and standardized responses to improve reliability and developer experience. These efforts enable faster feature delivery and stronger business value.
April 2025
49 Commits • 23 Features
Apr 1, 2025In April 2025, the backend for bounswe2025group5 was established with a scalable, domain-driven Spring Boot architecture. Delivered end-to-end authentication, a comprehensive set of domain modules (User, Profile, Notification, Reward, Waste, Logs, Goals), API quality improvements, and Wikidata-enabled semantic search groundwork. The team also corrected critical business logic in the waste/reward flow and set up robust exception handling and standardized responses to improve reliability and developer experience. These efforts enable faster feature delivery and stronger business value.
Activity
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Quality Metrics
Correctness88.6%
Maintainability87.2%
Architecture86.0%
Performance84.4%
AI Usage22.6%
Skills & Technologies
Programming Languages
BatchCSSDockerfileHTMLJSONJavaJavaScriptMarkdownPowerShellSQL
Technical Skills
AI integrationAPI DesignAPI DevelopmentAPI IntegrationAPI SecurityAPI designAPI developmentAWS S3AWS SDKAuthenticationBackend DevelopmentBug FixingCloud Storage IntegrationCode OrganizationConfiguration
Repositories Contributed To
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