Senior Backend Engineer / Architect With Platform Focus (F/M/X) - Wien

Our client, an established HR SaaS company based in Vienna, is shaping the future of modern HR across Europe. The platform combines goal management, recognition, development, and incentivization, helping organizations sustainably motivate and retain their employees. As part of its continued growth, an experienced Senior Backend Engineer / Architect with a strong platform engineering focus is sought to elevate the backend and cloud architecture to the next level of scalability.In this role, you will combine software engineering, architecture, cloud infrastructure, reliability, and developer productivity, making a significant contribution to reducing technical debt while sustainably improving performance and scalability.Your Responsibilities:Further development and optimization of backend services using Python, Django, Django REST Framework, and FastAPIRefactoring and modernization of existing systems to reduce technical debt and improve maintainabilityApplying modern architectural principles such as:Domain-Driven Design (DDD)Modular monolith and microservices principlesHexagonal architectureDesign and optimization of RESTful APIs and backend integrationsOptimization of PostgreSQL schemas, query performance, and scalabilityWorking with asynchronous and event-driven systems such as RabbitMQ, Kafka, or comparable technologiesContributing to internal platform services and self-service solutions for developersOperating and further developing the cloud infrastructure on AWS, particularly:EKSS3SESLambdaUsing Docker, Kubernetes, and Terraform in line with modern infrastructure-as-code practicesOptimizing CI/CD pipelines and deployment processes with tools such as GitHub Actions, ArgoCD, or comparable solutionsExpanding observability through logging, metrics, tracing, monitoring, and alertingEnsuring security, access controls, and compliance requirementsClose collaboration with Product, Frontend, QA, and other engineering colleagues in an agile setupEnsuring high quality standards through clean code, testing, code reviews, documentation, and knowledge sharingUsing modern tools such as AI coding assistants and automation to increase efficiencyYour Profile:More than 10 years of experience in backend software development, ideally with architectural responsibilityStrong practical experience with Python and DjangoExperience with Django REST Framework and designing RESTful APIsExperience with FastAPI or willingness to develop deep expertiseDeep understanding of software architecture, scalability, and maintainabilityHands-on experience with:Domain-Driven DesignModular monoliths or microservicesHexagonal architectureHands-on experience with PostgreSQL (schema design and performance tuning)Productive use of RabbitMQ, Kafka, or comparable messaging systemsGood knowledge of Docker and KubernetesPractical experience with AWS, ideally including EKS, S3, SES, and LambdaExperience with Terraform or similar infrastructure-as-code toolsKnow-how in CI/CD and deployment automationFamiliarity with observability tools such as Prometheus, Grafana, or comparable solutionsVery good English skills;

German is a plusPragmatic engineer with openness to new tools, patterns, and technologiesWhat Our Client Offers:A key role in the further development of a growing European HR SaaS platformCreative freedom in architecture, backend, and platform decisionsWorking with a modern tech stack around Python, Django, FastAPI, PostgreSQL, AWS, Kubernetes, Terraform, and CI/CDAn experienced, collaborative team with high quality standardsFull-time permanent position with a hybrid model in ViennaThe opportunity to actively shape the transition from startup structures to enterprise excellenceVerdiene 1000 € für eine erfolgreiche EmpfehlungErstelle dir deinen persönlichen Empfehlungslink und verdiene 1000€ für jede erfolgreiche Empfehlung. Es gibt keine Begrenzung, wie viele Personen du weiterempfehlen kannst. Hier kannst du dir deinen Link für diesen Job erstellen, sende ihn an die passende Person, wenn sie sich darüber bewirbt und eingestellt wird bekommst du die 1000€.