05.05.2026 aktualisiert

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100 % verfügbar

Senior Full-Stack Software Developer | Java & Angular | Cloud-Native & Microservices

Hamburg, Deutschland
Nur Remote
Master of Computer Science (100% Scholarship) - Cankaya University, 2023
Hamburg, Deutschland
Nur Remote
Master of Computer Science (100% Scholarship) - Cankaya University, 2023

Profilanlagen

YigitSahin_CV_2026.pdf

Skills

JavaDistributed ComputingAWS CLIGoogle CloudKubernetesFull Stack EntwicklungGraphQLgRPCAngular UiMicroservices
Java Backend Development
Expertise in Java (11/17/21+) with frameworks such as Quarkus and Spring Boot, building scalable microservices and REST APIs, gRPC, and GraphQL for high-performance distributed systems.

Cloud & Infrastructure (AWS, GCP, Kubernetes)
Hands-on experience with cloud-native platforms including AWS, GCP, Rancher, Kubernetes, and Docker, including orchestration of Kubernetes clusters and full CI/CD lifecycle automation using ArgoCD and Bamboo.

Angular & TypeScript Frontend Development
Proficiency in Angular (v13+), TypeScript, RxJS, React.js, and Microfrontends, delivering end-to-end full-stack features with a focus on clean architecture and high test coverage.

Data & Big Data Technologies
Experience with PostgreSQL, Redis, Apache Kafka, Cassandra, Apache Spark, Hadoop, Hive, and SQLite for processing large-scale data streams and ensuring robust data management.

DevOps & CI/CD
Practical knowledge of ArgoCD (GitOps), Bamboo, Jenkins, Git, Maven, and monitoring tools such as Grafana and Prometheus for automated deployments and observability.

Testing & Quality Assurance
Application of TDD principles and tools including Playwright, JUnit, Mockito, Jasmine, and Karma to maintain high software quality and comprehensive test coverage.

Authentication & Identity Management
Integration of Keycloak (OAuth2/OIDC) for secure identity management and authentication flows in enterprise applications.

Microservices & Clean Architecture
Design and implementation of microservices architectures using Clean Architecture principles, Spring Cloud, RabbitMQ, and advanced design patterns such as AOP and DDD.

Scala & Distributed Processing
Use of Scala together with Apache Spark and Hadoop for processing over 1TB of daily data streams in high-availability environments.

Sprachen

DeutschGrundkenntnisseEnglischverhandlungssicherTürkischMuttersprache

Projekthistorie

Senior Java Full-Stack Software Developer

Cognizant (Contractor at Volkswagen) - T-Rex TaaS Project
Developed an enterprise-level Testing-as-a-Service hybrid cloud platform for high-security (ISO 27000) and high-availability (ISO 20000) environments. Led migration of microservices from Micronaut to Quarkus, achieving 30% reduction in memory footprint and 40% faster startup times. Orchestrated Kubernetes (Rancher) clusters and automated CI/CD using ArgoCD and Bamboo. Technologies: Java (Quarkus), TypeScript (Angular), AWS, Kubernetes, ArgoCD, Bamboo, Docker, Linux.

Senior Java Full-Stack Software Developer

Cognizant (Contractor at Google) - Google Cloud Platform / Load Balancers
Engineered end-to-end features for internal GCP infrastructure tools using Java, gRPC, and GraphQL on the backend and Angular on the frontend. Architected and optimized enterprise-scale GCP Load Balancing solutions. Implemented comprehensive E2E tests with Playwright. Technologies: Java, Angular, gRPC, GraphQL, Microservices, Microfrontends, Playwright, PostgreSQL, Redis, Linux.

Senior Java Full-Stack Software Developer

Cognizant (Contractor at Workday) - Cross-team Blocker Identification
Led a Greenfield initiative to design a system identifying and visualizing cross-team blockers within Workday's ecosystem. Defined high-performance architecture using Java, AWS SQS for asynchronous processing, and Grafana for real-time observability. Technologies: Java, Redis, SQLite, AWS SQS, Grafana Stack.

Senior Java Full-Stack Software Developer

Cognizant - One HR Project (Internal)
Developed and integrated complex onboarding flows for Cognizant's internal HR system using Keycloak (OAuth2/OIDC). Engineered end-to-end features with Java (Spring Boot) and Angular for automating employee lifecycle processes. Technologies: Java, Spring Boot, Angular, Keycloak (OAuth2), PostgreSQL, Docker.

Mid-Level Java Full-Stack Software Developer

Huawei
Processed over 1TB of daily data streams from 4G/5G base stations using Scala, Apache Spark, and Hadoop. Engineered specialized vRO and NGC plugins to automate Huawei storage management within VMware environments using Java and Angular. Technologies: Java, Spring Boot, Angular, REST API, Git.

Full-Stack Java Software Developer

Denk-IT
Engineered the BOILERRUM Framework, a standardized microservices architecture using Spring Cloud, RabbitMQ, and OAuth2-JWT. Developed full-stack HR and Training modules for the Ministry of Treasury & Finance (EU-funded). Contributed to the ALTOS Finance Cloud with scalable microservices for e-Ledger and accounting applications. Technologies: Spring Boot, Microservices, Docker, RabbitMQ, Redis, PostgreSQL, React.js, Redux Saga, MaterialUI, Jenkins.

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