Senior Full-Stack & Mobile Developer, 10+ years, leading a small team as Tech Lead at NTT DATA on a Spring Boot 3 / Angular 17 enterprise platform for a Spain-based client. My background covers both ends genuinely, not superficially — 6 years at Implemental Systems shipping Java/Spring Boot + Kotlin/Android GIS systems for telecom, utilities, and airport operations (rebuilt a core airport-ops module with a 3-person team, +45% performance), plus freelance work spanning Flutter e-commerce (Shopify GraphQL integration) and a Spring Boot + PostGIS + Kotlin field-data GIS platform with offline-first sync.
I end up doing full-stack more often than not simply because few teams I've worked with have anyone who knows mobile — so backend, frontend, and mobile depth all grew together out of necessity rather than by design.
Looking for senior/architect-level roles, EU-remote or Spain-based, full-time or contract.
Technologies: Java, Spring Boot 3, Angular 17, TypeScript, JavaScript, Kotlin, Flutter/Dart, Android SDK, Jetpack Compose, Clean Architecture, MVVM, Riverpod, Hilt, Room/SQLite, DataStore, Flow/StateFlow, Retrofit, REST/SOAP APIs, GraphQL, OpenAPI/Swagger, OAuth2/JWT, PostgreSQL/PostGIS, MySQL, MongoDB, Redis, Elasticsearch, Kafka, RabbitMQ, gRPC, Docker, Kubernetes, Jenkins, GitHub Actions, Fastlane, Prometheus, Grafana, Sentry, Datadog, JUnit, Mockito, MockK, Espresso, TDD, SonarQube, Python/Django REST Framework, Smallworld/Magik GIS, GPS/GNSS, OpenStreetMap, QGIS, ArcGIS, Firebase, Shopify GraphQL
Résumé/CV: https://drive.google.com/file/d/1k514V1UHNma_WX_ndmcVwUv1aNR... Email: a.ajdaa@outlook.com LinkedIn: linkedin.com/in/edsteine GitHub: github.com/edsteine
Senior Full-Stack & Mobile Developer, 10+ years, leading a small team as Tech Lead at NTT DATA on a Spring Boot 3 / Angular 17 enterprise platform for a Spain-based client. My background covers both ends genuinely, not superficially — 6 years at Implemental Systems shipping Java/Spring Boot + Kotlin/Android GIS systems for telecom, utilities, and airport operations (rebuilt a core airport-ops module with a 3-person team, +45% performance), plus freelance work spanning Flutter e-commerce (Shopify GraphQL integration) and a Spring Boot + PostGIS + Kotlin field-data GIS platform with offline-first sync.
I end up doing full-stack more often than not simply because few teams I've worked with have anyone who knows mobile — so backend, frontend, and mobile depth all grew together out of necessity rather than by design.
Looking for senior/architect-level roles, EU-remote or Spain-based, full-time or contract.