{"id":4322941,"url":"https://alion.io/job/testsolutions-api-tester-mwd","title":"API Tester (m/w/d)","company":{"id":721266,"name":"TestSolutions","domain":"testsolutions.de","url":"https://alion.io/company/testsolutions-2","size_band":"51-200","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Join","truth_index":null},"role":"QA","role_family":"QA","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Frankfurt am Main, Germany"],"countries":["DE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"Insomnia","optional":false},{"name":"JavaScript","optional":false},{"name":"Postman","optional":false},{"name":"Python","optional":false},{"name":"Rest API","optional":false},{"name":"Rest-Assured","optional":false},{"name":"SOAP","optional":false},{"name":"SoapUI","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"Confluence","optional":true},{"name":"Scrum","optional":true}],"status":"live","first_seen_at":"2026-11-09T01:02:23Z","employer_posted_date":null,"last_verified_at":"2026-11-09T01:02:23Z","board_verified":false,"closed_at":null,"days_open":5,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":5},"description":"Einleitung\nTestSolutions bietet Komplettlösungen im Softwaretesten. Seit 2007 sichern wir die Qualität von Software in Branchen wie Airline, Automotive, Aviation, Finance, Healthcare, Insurance, Mobility, Railway und Research.\n\nWir sind stets auf der Suche nach engagierten API-Testern (m/w/d), die unser Team mit ihrem Know-how bereichern möchten.\n\nIhre Aufgaben\n\n Planung, Erstellung und Durchführung von API-Tests für REST- und SOAP-Schnittstellen.\n\n Testautomatisierung von API-Tests mit Tools wie Postman, Insomnia oder Karate.\n\n Validierung von API-Funktionalität, -Leistung und -Sicherheit.\n\n Fehlersuche und Analyse von API-Requests und -Responses.\n\n Prüfung und Sicherstellung der API-Qualität in CI/CD-Pipelines.\n\n Erstellung von Testfällen und Testskripten zur Automatisierung von API-Tests.\n\n Dokumentation und Reporting von Testergebnissen mit Empfehlungen für Entwickler.\n\n Zusammenarbeit mit Entwicklern, QA-Teams und DevOps, um eine hohe API-Qualität sicherzustellen.\n\nIhr Profil\n\n Erfahrung mit API-Tests und gängigen API-Test-Tools und (z. B. Postman, REST Assured, SoapUI, Karate, Insomnia).\n\n Kenntnisse in HTTP-Protokollen, JSON, XML, OAuth, JWT und API-Security-Aspekten.\n\n Erfahrung mit Skripting/Programmiersprachen wie Java, JavaScript, TypeScript oder Python für Testautomatisierung.\n\n Verständnis von CI/CD-Pipelines und Integration von API-Tests in DevOps-Umgebungen.\n\n Grundkenntnisse in Datenbanken (SQL, NoSQL) und API-Mocking-Tools sind von Vorteil.\n\n Sicherer Umgang mit Microsoft 365, Teams und Confluence.\n\n Analytisches Denken, strukturierte und genaue Arbeitsweise.\n\n Sehr gute Deutsch- und Englischkenntnisse in Wort und Schrift.\n\nDas erwartet Sie\n\n Komplexe IT-Landschaften im Wandel und spannende Projekte in einem aufstrebenden IT-Unternehmen.\n\n Einarbeitung durchs Team auch in komplexe technische Zusammenhänge.\n\n Eine internationale und offene Atmosphäre.\n\n Kommunikation auf Augenhöhe.\n\nEin Anschreiben ist nicht notwendig, wenn Ihr Lebenslauf aussagekräftig ist. Anhänge wie z.B. Arbeitszeugnisse oder Zertifikate (ISTQB, IREB, Scrum, OKR etc.) sind gerne gesehen. Wir begrüßen insbesondere Bewerbungen von Menschen mit Behinderung, stellen strikt entsprechend des Allgemeinen Gleichbehandlungsgesetzes ein, beachten individuelle Bedürfnisse der Beschäftigten und erwirken ein integratives Arbeitsumfeld. 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