Senior Integration Engineer
Glückliche Gäste GmbH
Role Description
Du baust die Integrationsdomäne des Personal.managers (PM), als Engineer, nicht als Middleware-Konfigurator. Personal.manager digitalisiert Dienst- und Personalplanung im Gesundheitswesen. Damit unsere Plattform in echten Klinikumgebungen funktioniert, muss sie sauber mit SAP HCM und weiteren Enterprise-Systemen zusammenspielen, über die SAP Integration Suite und ein DMZ-Gateway.
Das Architekturzielbild steht: eigene Integrationsschicht im NodeJS-/PostgreSQL-Backend, REST-API plus asynchrone Events und Webhooks, DB-Outbox + Worker, EMQX als interner Bus, fachliche Domänenschnitte, Idempotenz, Retry, Dead-Letter, Audit-Log, versionierte Payload-Contracts. Du füllst dieses Zielbild mit Code, auf unserer Seite und programmatisch in der SAP Integration Suite, wo Code die richtige Antwort ist. Im weiteren Verlauf wirst Du einen zweiten Integration Engineer mit anleiten.
Das wirst Du tun:
- Auf PM-Seite (NodeJS, TypeScript, PostgreSQL):
- REST-Endpunkte für Stammdaten und Lookups, Event- und Webhook-Ausleitung für Bewegungsdaten (Abwesenheiten, Zeitbuchungen, Dienstpläne, Kontingente, payroll-relevante Statuswechsel)
- DB-Outbox-Pattern, Worker-Logik, Retry- und Dead-Letter-Behandlung
- Anbindung an EMQX als internen Event-Bus
- Versionierte Payload-Contracts und auditierbare Integrationshistorie
- Auf Seite der SAP Integration Suite:
- Flows programmatisch implementieren, Custom Scripts, Adapter-Logik, Transformationen
- Mappings PM ↔ SAP testbar und versionierbar halten
- Saubere Fehlerkanäle bauen, technische Abstimmung mit den SAP-Teams unserer Kunden
- Schnittstellen werden entlang fachlicher Domänen geschnitten, Stammdaten, Zeit/Abwesenheit, Planung, Reporting/Abrechnung, nicht entlang technischer Tabellen.
Qualifications
- Du programmierst täglich.
- REST-APIs und ereignisbasierte Integrationen baust Du routiniert in NodeJS/TypeScript (oder einem vergleichbaren Stack).
- PostgreSQL ist Dir vertraut.
- Du kennst die Werkzeuge robuster Integrationen aus eigener Praxis: Outbox-Pattern, Idempotenz, Retry-Strategien, Dead-Letter-Queues, Webhooks, MQTT-/AMQP-Broker (EMQX, RabbitMQ, Kafka o. ä.), strukturiertes Logging, Correlation-IDs, versionierte Contracts.
- Du denkst Schnittstellen als System mit klaren Verträgen.
- Eine Integration ist für Dich erst „fertig", wenn sie nachts ohne Dich läuft, sich beim Fehler erholt und transparent macht, was passiert ist.
Requirements
- Besonders hilfreich:
- Erfahrung mit der SAP Integration Suite (Cloud Integration / CPI), insbesondere mit ihren programmatischen Erweiterungspunkten (Groovy-Scripting, Custom Adapter, eigene Flow-Logik)
- Regulierte Kundenumgebungen, DMZ-Gateways, revisionssichere Protokollierung
- SaaS-Plattformarchitekturen, API-Design, eventbasierte Architekturen
- Du musst kein SAP-Spezialist sein. Entscheidend ist, dass Du Integrationen sauber programmierst — nicht zusammenklickst.
Benefits
- Kurze Wege, echter Gestaltungsspielraum, direkte Anbindung an Produkt und Entscheidung
- 100 % Remote, Hybrid oder vor Ort in St. Wendel
- Faires Gehalt entsprechend Erfahrung und Verantwortung
- 30 Tage Urlaub
- Modernes Büro mit Dusche, Waschmaschine und Siebträgermaschine
Application
Wir freuen uns auf Deinen Lebenslauf und ein paar Hinweise auf Projekte, in denen Du Schnittstellen, APIs oder eventbasierte Integrationen selbst implementiert hast. Code-Beispiele oder Repos sind ausdrücklich willkommen.
$86.8k - $165.2k
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