Über Ali
Senior Java backend engineer and software architect with 17+ years building enterprise systems for banking, payments, trade finance and cloud-native platforms. I design and deliver event-driven microservices end-to-end – from architecture and Java/Spring Boot implementation through to Kubernetes, GitOps and observability on AWS, GCP and Azure.
Strongest where backend engineering meets infrastructure: reducing latency and cloud cost, hardening reliability, and replacing legacy ETL/monolithic systems with Kafka/Debezium CDC pipelines, Temporal workflows and Istio-based service meshes. Equally comfortable as in-house senior engineer/architect or as an independent freelance contractor.
Deutsch
Konversationssicher
Englisch
Verhandlungssicher
Persisch
Muttersprachlich oder zweisprachig
Nur remote
Führt Projekte hauptsächlich remote aus
Projekt- und Berufserfahrung
- Yatta Solutions GmbH,Platform Engineer & Software ArchitectDIGITALAGENTUREN & IT-CONSULTINGAugust 2025 - Heute (10 Monate)Frankfurt, Germany
- Architected the Yatta Integration Layer – a config-driven integration platform on Java 25, Spring Boot 4 (WebFlux), Temporal, gRPC and Kafka, enabling new third-party integrations (e.g. AVS fulfillment) via declarative JSON configs with zero code changes.
- Designed and implemented Tink integration with 0Auth IBAN verification to enhance fraud prevention and account validation workflows with Adyen payByBank.
- Architected and implemented an OpenFGA-based authorization model for centralized management of users, groups, and fine-grained access control in the vendor portal.
- Designed and implemented the Yatta API Gateway platform using GraphQL Federation, providing a unified API layer across distributed microservices with centralized authentication, authorization and request orchestration.
- Replaced NGINX + NLB with Istio service mesh and AWS ALB; rolled out WAF, OAuth (Cognito), IP whitelisting and RBAC across environments.
- Migrated CDC from Confluent Cloud connectors to a self-hosted Kafka Connect + Debezium stack, reducing operational cost by ~80% across multiple environments.
- Implemented the Transactional Outbox pattern with Debezium for reliable, exactly-once event publishing to Kafka with Avro and Schema Registry.
- Migrated dunning/payment-recovery workflows from Airflow to Temporal, achieving 99.9% reliability for settlement handling.
- Optimised Apache Airflow with deferrable sensors to handle 1000+ concurrent DAG runs without scaling the worker pool.
- Refactored a monolithic Terraform codebase into 3 modular projects, cutting deployment time by ~45%.
- Stood up full observability with OpenTelemetry, Tempo, Prometheus and Loki; automated dev/staging/prod with ArgoCD, Image Updater and Helm.
- ZahlungsWERK GmbH,Architect and Senior backend developerOktober 2023 - August 2025 (1 Jahr und 10 Monate)Hamburg, Germany• ● End-to-end responsibility for architecture of a payment and dunning platform based on Spring Boot, Kafka, PostgreSQL and Kubernetes• ● Developed & deployed scalable microservices with Java 21 & Spring Boot 3 , reducing latency by 40% and enhancing service resilience .• ● Optimized real-time data processing by integrating Google Pub/Sub, and Debezium , improving data consistency and reducing processing time by 35% .• ● Built a fraud detection model using Camunda BPM & Neo4j , enhancing security compliance and reducing fraud incidents .• ● Automated cloud infrastructure provisioning with Terraform & Helm , cutting manual deployment time by 50% .• ● Implemented Istio Service Mesh to support Blue-Green & Canary deployments , ensuring zero-downtime production rollouts .• ● Streamlined CI/CD pipelines with Argo CD & GitOps , achieving 100% automated deployments and reducing manual interventions .
- axxessio GmbH,Senior Software DeveloperOktober 2019 - Oktober 2023 (4 Jahre)Darmstadt, HE, Germany• ● Built SSO authentication for TNM using Azure AD, Java 17, PostgreSQL, and Spring WebFlux , deployed on Azure Kubernetes Service (AKS) .• ● Developed & maintained backend microservices for MagentaTV (Deutsche Telekom) with Spring Boot, WebFlux, Quarkus, Kubernetes, Python and GitLab CI/CD .• ● Optimized backend microservices for MagentaTV (Deutsche Telekom) , migrating key services from Spring Boot to Quarkus , improving application startup time by 50% .• ● Enhanced testing & quality assurance by implementing JUnit & Mockito frameworks , increasing test coverage by 35% and reducing production bugs .
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Ausbildung und Abschlüsse
- Master of Science in Computer ScienceIslamic Azad University2002Bachelor's degree, Computer science - hardware
- High School Diploma, MathematicsAlborz High school1997High School Diploma, Mathematics
Zertifizierungen
- Microservices: Clean Architecture, DDD, SAGA, Outbox & KafkaUdemy2022