[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"project-senior-python-backend-engineer-mfd":3,"similar-senior-python-backend-engineer-mfd":42},{"id":4,"slug":5,"title":6,"skills":7,"budget":26,"duration":26,"location":27,"onsitePercent":28,"contractType":29,"foundAt":30,"category":31,"description":35,"rawText":36,"webTitle":37,"webText":38,"language":39,"projectId":40,"sourceUrl":41},11498,"senior-python-backend-engineer-mfd","Senior Python Backend Engineer (m\u002Ff\u002Fd)",[8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25],"Python","FastAPI","REST APIs","Pydantic","pytest","Git","GitHub","Docker","Kubernetes","CI\u002FCD","LLM","LangChain","LangGraph","async programming","OpenAPI","logging","metrics","tracing",null,"Vienna",50,"contracting","2026-06-08T10:05:57+00:00",{"id":32,"slug":33,"label":34},1,"software_dev","Software-Entwicklung","Freelance\u002FContracting-Projekt für einen Senior Python Backend Engineer in Wien. Entwicklung und Wartung von Backend-Webservices für ein KI-gestütztes Konversationssystem mit REST APIs, Schema-Validierung, Testing und Containerisierung. Internationale Kunden, teilweise Remote möglich.","Senior Python Backend Engineer (m\u002Ff\u002Fd)\n\nFreelance\u002FContracting project\n\nVienna\n\nStart date: asap\n\nReference number: 880230\u002F1\nBewerbung starten\n\nDiesen Job teilen oder drucken\n\nResponsibilities\n\n- Develop and maintain backend web services for an AI-powered conversational system\n- Design and implement REST APIs (FastAPI or similar), including OpenAPI-based service contracts\n- Apply schema and data validation (e.g., Pydantic or comparable approaches)\n- Ensure high code quality through testing (pytest) and CI pipelines\n- Collaborate via Git\u002FGitHub workflows, including code reviews\n- Implement and maintain clean, layered backend architectures with dependency injection\n- Ensure observability through metrics, tracing, and structured logging\n- Support containerized deployments using Docker and Kubernetes\n- Contribute to LLM-based application components (e.g., agent frameworks, prompt engineering, output evaluation)\n- Apply production-ready engineering practices in a regulated\u002Fenterprise environment\n\nProfile\n\n- Senior Python Backend Engineer with strong backend fundamentals\n- Strong expertise in modern Python (3.12+), including type hints and async programming\n- Proven experience building REST APIs (FastAPI or similar frameworks)\n- Experience in schema validation (e.g., Pydantic) and API design (OpenAPI)\n- Solid testing experience (pytest) and CI\u002FCD pipeline integration\n- Experience in Git\u002FGitHub workflows and code reviews\n- Familiarity with Docker and Kubernetes in production environments\n- Understanding of clean architecture, layered design and dependency injection\n- Experience in observability (logging, metrics, tracing)\n- Hands-on experience with LLM-based applications (e.g., LangChain, LangGraph, prompt engineering) is a strong differentiator\n\nBenefits\n\n- International client\n- Partly remote possible\n\nAbout Hays\n\nIT is and always has been our core business that laid the foundation for Hays' success. We are the biggest privately owned IT recruitment agency in Germany and offer the best jobs for every career level – whether you are interested in vacancies in agile SMEs or international DAX groups. Hays masters the entire IT job spectrum, from support to software architecture or digitalisation – thanks to our broad portfolio, we have something for everyone. In the last decades, we were able to support numerous IT experts with choosing the right path for a successful career, positioning ourselves as their lifelong partner. Our highly specialised consultants can cater to your every wish and expectation and will prepare you for interviews and contract negotiations. Give it a try and learn what the market has to offer – our services are free of charge, non-binding and discreet! We look forward to hearing from you.\n\nStaffing process for freelance specialists\n\n- Analysis of qualifications\n\n- Telephone or personal interview\n\n- Contact with customers\n\n- Contract with Hays\n\n- 1\n1. Analysis of qualifications\n\nWe carry out a detailed analysis of your technical qualifications on the basis of your CV, your application documents and your profile.\n\n- 2\n2. Telephone or personal interview\n\nWe would like to get to know you better in a personal conversation. Your personal contact would be pleased to advise you and clarify any outstanding questions about your qualifications. In this way, your profile will be expanded to include a few more skills if necessary.\n\n- 3\n3. Contact with customers\n\nWe compare your qualifications and targets with the expectations of our customers. As soon as we have found a suitable project for you, we will contact you and introduce you to your potential project partners. If you are interested in the project, we will contact the customers. Then a personal discussion will take place with the project partner.\n\n- 4\n4. Contract with Hays\n\nIf both parties are interested in collaborating, all of the relevant framework conditions will be agreed with Hays. Hays then acts as a contractual partner for both parties. In other words, a contract is drawn up between you and Hays and the company and Hays.\n\nContact at Hays\n\nFlorian Pracher\nE-Mail: florian.pracher@hays.at florian.pracher@hays.at\nReference number : 880230\u002F1\n\n© Copyright Hays plc, . Das Wort HAYS, die H-Symbole, „Hays Working for your tomorrow\" und „Powering the world of work\" sowie damit verbundene Logos und Illustrationen sind eingetragene Markenzeichen der Hays PLC. Die H-Symbole sind Originaldesigns, die in vielen Ländern geschützt sind. Alle Rechte vorbehalten.\n\nBewerbung starten\n\nDiesen Job teilen oder drucken\n\nZur Gesamtübersicht\n\nDiese Jobs könnten Sie auch interessieren\n\nMEINE MERKLISTE\n\nUm die Merkliste zu nutzen, ist ein Login notwendig.\nFalls Sie noch keine Login-Daten haben, können Sie sich in zwei Minuten registrieren.\n\nJetzt einloggen Sie haben noch keinen Login?\n\nJetzt registrieren\nIhre Vorteile\n\nGeräteübergreifend Jobangebote speichern und sich bewerben\n\nBewerbung auf mehrere Jobangebote gleichzeitig\n\nSchnelle und einfache Bewerbung\n\nBewerben mit 1 Klick\n\nIhre Bewerbungsunterlagen liegen uns bereits vor.\n\nMöchten Sie sich nun damit bewerben?\n\nJetzt bewerben\n\nChat\n\nChat -\n\nDer Chat kann aufgrund Ihrer Cookie-Einstellungen nicht angezeigt werden.\nBitte aktivieren Sie die funktionellen Cookies und laden die Seite neu, um den Inhalt zu sehen.\nCookie-Einstellungen anpassen","Senior Python Backend Engineer","Wir suchen einen erfahrenen Senior Python Backend Engineer für ein Freelance-\u002FContracting-Projekt im Bereich AI-gestützter Konversationssysteme. Der Einsatzort ist Wien, Start ist zeitnah möglich.\n\nIhre Aufgaben:\nSie entwickeln und warten Backend-Webservices für ein innovatives KI-System. Dabei designen und implementieren Sie REST APIs (z.B. mit FastAPI), definieren OpenAPI-basierte Service-Contracts und setzen Schema- sowie Datenvalidierung um. Sie sorgen für hohe Code-Qualität durch umfassendes Testing (pytest) und CI-Pipelines, arbeiten über Git\u002FGitHub-Workflows inklusive Code Reviews und implementieren saubere, geschichtete Backend-Architekturen mit Dependency Injection. Observability durch Metriken, Tracing und strukturiertes Logging ist selbstverständlich. Sie unterstützen containerisierte Deployments mit Docker und Kubernetes und tragen zu LLM-basierten Anwendungskomponenten bei – etwa Agent Frameworks oder Prompt Engineering. Dabei wenden Sie durchgehend produktionsreife Engineering-Practices an.\n\nIhr Profil:\nSie bringen umfangreiche Erfahrung als Senior Python Backend Engineer mit starken Backend-Fundamentals mit. Sie beherrschen modernes Python (3.12+) inklusive Type Hints und asynchrone Programmierung. Nachgewiesene Expertise in REST API-Entwicklung (FastAPI oder ähnlich), Schema-Validierung (z.B. Pydantic) und API-Design (OpenAPI) ist erforderlich. Sie haben solide Testing-Erfahrung (pytest), kennen CI\u002FCD-Pipelines, Git\u002FGitHub-Workflows und Code Reviews. Produktive Erfahrung mit Docker und Kubernetes sowie Vertrautheit mit Clean Architecture, geschichteter Architektur und Dependency Injection runden Ihr Profil ab. Observability-Erfahrung (Logging, Metriken, Tracing) ist wichtig. Hands-on-Erfahrung mit LLM-basierten Anwendungen (LangChain, LangGraph, Prompt Engineering) ist ein großer Pluspunkt.\n\nWir bieten:\nInternationaler Client, teilweise Remote-Arbeit möglich.","en","880230\u002F1","https:\u002F\u002Fwww.hays.de\u002Fjobsuche\u002Fstellenangebote-jobs-detail-senior-python-backend-engineer-vienna-880230\u002F1",{"items":43},[44,63,78,93,110,123,135,152,170,182,192,201,210,220,231],{"id":45,"slug":46,"title":47,"skills":48,"budget":26,"duration":58,"location":59,"onsitePercent":60,"contractType":29,"foundAt":61,"category":62},11514,"magento-expertin-webshops-mwd-2-tagewoche","Magento Expert:in Webshops (m\u002Fw\u002Fd) (2 Tage\u002FWoche)",[49,50,51,52,53,54,55,56,57],"Magento","Vue.js","JavaScript","CSS","HTML","MySQL","Linux","Serverkonfiguration","Frontendentwicklung","7 Monate (bis Ende 2026)","Hamburg",0,"2026-06-08T10:55:17+00:00",{"id":32,"slug":33,"label":34},{"id":64,"slug":65,"title":66,"skills":67,"budget":26,"duration":26,"location":75,"onsitePercent":28,"contractType":29,"foundAt":76,"category":77},11507,"technical-writer-information-developer-mwd","Technical Writer \u002F Information Developer (m\u002Fw\u002Fd)",[68,69,70,71,53,13,72,73,74],"Technische Redaktion","DITA","FrameMaker","XML","Scrum","Dokumentation","Versionskontrollsysteme","Berlin","2026-06-08T10:25:43+00:00",{"id":32,"slug":33,"label":34},{"id":79,"slug":80,"title":81,"skills":82,"budget":26,"duration":26,"location":89,"onsitePercent":90,"contractType":29,"foundAt":91,"category":92},11479,"java-entwickler-mwd-2","Java-Entwickler (m\u002Fw\u002Fd)",[83,84,85,15,13,86,87,88],"Java","Spring Boot","Angular","Objektorientierte Programmierung","Softwarearchitektur","Automatisierte Tests","Friedrichshafen",100,"2026-06-08T09:25:32+00:00",{"id":32,"slug":33,"label":34},{"id":94,"slug":95,"title":96,"skills":97,"budget":26,"duration":26,"location":107,"onsitePercent":28,"contractType":29,"foundAt":108,"category":109},11478,"softwareentwickler-embedded-c-mwd","Softwareentwickler Embedded C (m\u002Fw\u002Fd)",[98,99,55,100,101,102,103,104,105,106],"Embedded C","C","Elektrotechnik","Informatik","Programmierung","Systemintegration","Fehleranalyse","Integration","Test","Kassel","2026-06-08T09:25:25+00:00",{"id":32,"slug":33,"label":34},{"id":111,"slug":112,"title":113,"skills":114,"budget":26,"duration":26,"location":26,"onsitePercent":120,"contractType":29,"foundAt":121,"category":122},11474,"python-entwickler-wmd-mes","Python Entwickler (w\u002Fm\u002Fd) MES",[8,115,116,117,118,119],"MES","UI\u002FUX","HMI Design","Datenmodellierung","Backend-Entwicklung",20,"2026-06-08T09:05:07+00:00",{"id":32,"slug":33,"label":34},{"id":124,"slug":125,"title":126,"skills":127,"budget":26,"duration":26,"location":75,"onsitePercent":28,"contractType":132,"foundAt":133,"category":134},11457,"typescript-python-engineer-2","Typescript & Python Engineer",[128,8,51,85,83,129,130,13,131],"TypeScript","SQL","JSON","Maven","permanent","2026-06-08T08:26:53+00:00",{"id":32,"slug":33,"label":34},{"id":136,"slug":137,"title":138,"skills":139,"budget":26,"duration":146,"location":147,"onsitePercent":148,"contractType":149,"foundAt":150,"category":151},11438,"softwarearchitekt-mwd-gr-bremenremote-august-2026","Softwarearchitekt (m\u002Fw\u002Fd) \u002F\u002F GR Bremen\u002Fremote \u002F\u002F August 2026",[87,140,141,142,143,103,144,145],"Anforderungsmanagement","Komplexe Softwareprojekte","Architekturdokumentation","Schnittstellenmanagement","Deutsch","Englisch","36 Monate (August 2026 - Juli 2029)","Bremen",60,"temp_work","2026-06-08T07:51:35+00:00",{"id":32,"slug":33,"label":34},{"id":153,"slug":154,"title":155,"skills":156,"budget":26,"duration":165,"location":166,"onsitePercent":167,"contractType":132,"foundAt":168,"category":169},11432,"developer-python-aws-end-to-end-testing-mwd-85-remote","Developer (Python, AWS, End-to-End-Testing) (m\u002Fw\u002Fd) 85% remote",[8,157,158,159,160,161,162,163,51,128,164],"AWS","End-to-End-Testing","Bundesnetzagentur (BNetzA)","Agentic Coding","Container Services","Automatisierung","Domain-Driven Design (DDD)","Playwright","01.07.2026 – 31.12.2027","Frankfurt am Main",15,"2026-06-08T07:21:13+00:00",{"id":32,"slug":33,"label":34},{"id":171,"slug":172,"title":173,"skills":174,"budget":26,"duration":179,"location":166,"onsitePercent":167,"contractType":132,"foundAt":180,"category":181},11430,"developer-java-spring-boot-aws-kafka-mwd-85-remote","Developer (Java, Spring Boot, AWS, Kafka) (m\u002Fw\u002Fd) 85% remote",[83,84,157,175,176,177,178,164,161,162],"Domain-Driven Design","Event-Driven Architecture","Apache Kafka","Keycloak","01.07.2026 – 31.12.2027 + Option","2026-06-08T07:16:26+00:00",{"id":32,"slug":33,"label":34},{"id":183,"slug":184,"title":185,"skills":186,"budget":26,"duration":165,"location":166,"onsitePercent":167,"contractType":132,"foundAt":190,"category":191},11429,"developer-python-java-aws-mwd-85-remote","Developer (Python, Java, AWS) (m\u002Fw\u002Fd) 85% remote",[8,83,157,187,175,119,188,161,162,158,189],"Java Spring Boot","Cloud-Lösungen","Machine Learning","2026-06-08T07:16:19+00:00",{"id":32,"slug":33,"label":34},{"id":193,"slug":194,"title":195,"skills":196,"budget":26,"duration":165,"location":166,"onsitePercent":167,"contractType":132,"foundAt":199,"category":200},11428,"developer-aws-java-spring-boot-postgres-mwd-85-remote","Developer (AWS, Java, Spring Boot, Postgres) (m\u002Fw\u002Fd) 85% remote",[157,83,84,175,176,197,177,198,164,161],"PostgreSQL","Selenium","2026-06-08T07:16:12+00:00",{"id":32,"slug":33,"label":34},{"id":202,"slug":203,"title":204,"skills":205,"budget":26,"duration":165,"location":166,"onsitePercent":167,"contractType":132,"foundAt":208,"category":209},11423,"developer-aws-java-spring-boot-mwd-85-remote-2","Developer (AWS, Java, Spring Boot) (m\u002Fw\u002Fd) 85% remote",[157,83,84,175,206,119,207,51,128,161,164,162],"Cloud-Infrastrukturen","UI\u002FUX-Design","2026-06-08T07:01:22+00:00",{"id":32,"slug":33,"label":34},{"id":211,"slug":212,"title":204,"skills":213,"budget":26,"duration":165,"location":166,"onsitePercent":167,"contractType":132,"foundAt":218,"category":219},11422,"developer-aws-java-spring-boot-mwd-85-remote",[157,83,84,158,15,214,215,176,175,164,216,217],"GitLab CI\u002FCD","OpenShift","Datenvisualisierung","ISAQB CPSA-A","2026-06-08T07:01:15+00:00",{"id":32,"slug":33,"label":34},{"id":221,"slug":222,"title":223,"skills":224,"budget":26,"duration":165,"location":166,"onsitePercent":167,"contractType":132,"foundAt":229,"category":230},11421,"developer-aws-java-spring-boot-event-driven-architectures-mwd-85-remote","Developer (AWS, Java Spring Boot, Event-Driven Architectures) (m\u002Fw\u002Fd) 85% remote",[157,187,225,226,227,175,161,228,197,15,215,177,158],"Event-Driven Architectures","ISAQB Certified Professional for Software Architecture - Foundation Level","Bundesnetzagentur (BNetzA) Kenntnisse","CI\u002FCD GitLab","2026-06-08T07:01:07+00:00",{"id":32,"slug":33,"label":34},{"id":232,"slug":233,"title":234,"skills":235,"budget":26,"duration":165,"location":166,"onsitePercent":167,"contractType":132,"foundAt":242,"category":243},11420,"solution-architect-aws-java-spring-boot-cpsa-a-mwd-85-remote","Solution Architect (AWS, Java Spring Boot, CPSA-A) (m\u002Fw\u002Fd) 85% remote",[157,187,236,237,238,51,50,214,215,15,239,240,241],"CPSA-A","End-to-End Testing","Cloud Solutions","Bundesnetzagentur (BNetzA) Vorgaben","AWS Certified Solutions Architect","AWS Certified Cloud Practitioner","2026-06-08T06:55:54+00:00",{"id":32,"slug":33,"label":34}]