Senior Python Backend Developer - AI Applications (m/f/d)

Job description

Wir sind Bertrandt. Ein eigenständiger und internationaler Engineering Dienstleister mit langjähriger Expertise. Mit branchenübergreifendem Know-how und einem ganzheitlichen System- und Produktverständnis schaffen wir technologische Lösungen entlang der gesamten Wertschöpfungskette. Wir beschäftigen uns mit den Trendthemen Digitalisierung, E-Mobilität und Autonome Systeme hauptsächlich für die Branchen Automotive, Luftfahrt, Defence und Maschinenbau und ermöglichen hier konsequent die Entstehung passgenauer Lösungen. Unser Ziel: den technologischen Fortschritt beschleunigen und einen relevanten Beitrag zu einer nachhaltigen Zukunft leisten. Daran arbeiten wir jeden Tag – mit rund 12.000 Mitarbeiterinnen und Mitarbeitern an über 50 Standorten weltweit. Your Responsibilities: Take technical ownership of the reliable and stable operation of AI-powered applications in production Monitor application health and investigate incidents using logs, metrics, alerts, and distributed traces Assess the technical impact and business implications of production issues and coordinate their resolution from initial analysis through closure Perform root cause analyses across the entire application stack, including Python backends, React frontends, REST APIs, databases, system integrations, and application configurations Read, review, debug, maintain, and continuously improve existing Python codebases Develop and deploy bug fixes, hotfixes, and technical improvements through established testing, peer-review, and CI/CD processes Troubleshoot end-to-end application flows, including frontend-backend interactions, data-processing pipelines, AI integrations, and external dependencies Implement smaller bug fixes and enhancements in React and TypeScript where required Distinguish application-level issues from platform or infrastructure failures and collaborate closely with the responsible engineering teams Improve application logging, monitoring, alerting, error handling, resilience, performance, and overall observability Maintain application dependencies and support configuration, security, and version updates Develop automated unit and integration tests for bug fixes and technical improvements Implement sustainable corrective measures to prevent recurring production issues Maintain technical documentation, operational runbooks, and troubleshooting guidelines Support knowledge transfer, go-live activities, hypercare phases, and the transition into regular operations Communicate technical status, risks, workarounds, and resolution progress clearly to the AI Service Manager and relevant stakeholders Automate recurring operational, monitoring, and diagnostic activities What You Bring: 5+ years of professional experience in Python backend development, including the design, maintenance, debugging, and optimization of production-grade applications Strong expertise in Python technologies and frameworks such as FastAPI, Flask, asynchronous programming, object-oriented development, REST APIs, OpenAPI/Swagger, OAuth2, JWT, PostgreSQL, SQLAlchemy, and SQL Proven experience working with complex codebases, performing root cause analysis, resolving production incidents, and delivering sustainable solutions in business-critical environments Hands-on experience with automated testing, Git-based development workflows, code reviews, and modern software engineering best practices Strong background in cloud-native and distributed applications, including Docker, CI/CD pipelines, application monitoring, logging, alerting, observability, and production deployments Experience with AWS services such as ECS/Fargate, CloudWatch, S3, load balancing, and queue-based architectures; Infrastructure-as-Code experience (e.g., Terraform) is considered an advantage Solid understanding of AI-powered applications, including LLM integrations, Retrieval-Augmented Generation (RAG), embeddings, vector databases, document processing, AI agents, tool calling, and multi-step orchestration workflows Experience integrating AI and LLM services through APIs and investigating AI-specific production issues related to model behavior, retrieval quality, latency, context limitations, and external dependencies Familiarity with Azure OpenAI, LangChain, LangGraph, LlamaIndex, or similar AI application frameworks is a plus Understanding of frontend-backend interactions with the ability to troubleshoot through browser developer tools, API traces, and application logs; basic React and TypeScript knowledge is beneficial Experience working with enterprise integrations and platforms such as SAP, SAP Gateway, EDI, Snowflake, or comparable enterprise environments is advantageous Proven ability to work independently within complex system landscapes and collaborate effectively with backend, frontend, cloud, platform, data, AI, and business teams Successfully completed vocational training, a university degree, or equivalent practical experience in a relevant technical field Fluent English communication skills, both written and spoken Strong sense of ownership, analytical thinking, and problem-solving capabilities, combined with a structured, pragmatic, and service-oriented approach Ability to communicate complex technical topics clearly to both technical and non-technical stakeholders and to work effectively across backend, frontend, AI, cloud, data, and integration domains Im Rahmen der Arbeitnehmerüberlassung suchen wir für einen namhaften Kunden einen Senior Python Backend Developer – AI Applications (m/w/d) . Sie begeistern sich für moderne Backend-Architekturen, den Betrieb produktiver AI-Lösungen und die Analyse komplexer Anwendungssysteme? Dann erwartet Sie eine spannende Aufgabe an der Schnittstelle von Software Engineering, Cloud-Technologien und künstlicher Intelligenz. Bertrandt legt großen Wert auf Gleichbehandlung und Chancengleichheit. Unsere Recruiting-Entscheidungen basieren auf den Erfahrungen und Fähigkeiten der Bewerber*innen. Schwerbehinderte Menschen bzw. gleichgestellte Menschen im Sinne des SGB IX sind herzlich willkommen und werden bei gleicher Eignung bevorzugt eingestellt. Sie sind interessiert? Wir freuen uns über Ihre Bewerbung!