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As a Senior Software Engineer, you are responsible for designing and developing IMCs platform architecture covering both the software and infrastructure aspects of the platform with a key focus on its platform search feature. The role is expected to work closely with the Tech leadership and product teams to define short- and long-term improvements to address the growth of our customer experience.

 

What you'll be doing

  • Plattform & Application Engineering:
    • Partner with Software Architects, Tech Leaders, and Product Managers to analyze and transform business requirements into robust software specifications
    • Design and develop highly scalable, secure, and low-latency RESTful APIs for our platform
    • Contribute to the design of distributed, cloud-native application components, ensuring resilience, observability, and operational excellence
    • Actively participate in architecture decisions and contribute to short- and long-term technical strategies
    • Build, operate, and continuously improve infrastructure and platform services following DevOps and GitOps principles
    • Collaborate in small, agile, cross-functional teams and contribute to knowledge sharing and mentoring
  • Search Technology (Full-Text & Vector):
    • You will be a domain lead or key contributor for the platform’s search capabilities. Responsibilities include:
      • Design, implement, and optimize search pipelines covering full-text indexing, retrieval, ranking, and faceting
      • Vector-based semantic search (ANN: HNSW, IVF, PQ, graph-based indexing, hybrid fusion techniques)
      • Own the architecture and lifecycle of search indexes across multiple modalities (documents, metadata, embeddings)
      • Optimize and tune search engines and vector databases, such as: Elasticsearch/OpenSearch, Pinecone, FAISS, etc.
      • Optimize system-level performance, including: Indexing throughput, refresh strategies, segment merging, query latency, ranking accuracy, and memory/CPU footprint
      • Design hybrid retrieval strategies combining BM25/TF-IDF with vector similarity (RRF, fusion scoring, re-ranking models)
      • Implement monitoring and observability for search systems, including relevancy metrics, degradation detection, and anomaly tracking

What you'll need

  • 5+ years of professional experience in agile software development
  • Strong expertise in Java, Spring Framework, and Spring Boot
  • Experience with Containers and Kubernetes or similar technologies (e.g., Docker)
  • Solid understanding of distributed systems and cloud-native architectural patterns
  • Advocate of Clean Code and the DevOps culture (e.g. one of, GitLab CI, Jenkins, Gradle, Maven, Ant, Gulp, Ansible, Salt, Terraform, Prometheus, Kibana, Grafana, Logstash, Beats, Helm)
  • Experience with cloud-native development technologies and practices is a plus (IaC, GitOps, DevOps, Cloud Computing)
  • Knowledge of Microsoft Azure, AWS or similar cloud computing platforms is a plus
  • Fluency in English is mandatory, Fluency in German would be a big advantage
  • Bring a positive and solution-oriented mindset
  • Self-motivated and self-managing, with strong organizational skills
  • Great communicator that can easily explain ideas and engage people while translating business requirements into technical solutions

What's in it for you

  • You can actively participate in and drive agile approaches and processes for improving our cloud native strategy
  • You build and operate platform and infrastructure core services in a distributed service-oriented architecture in a small autonomous agile team
  • Flexible working hours, flat hierarchies, and a cooperative culture
  • Hybrid working: We offer "Full flexibility, but not 100% remote". You can combine the advantages of both worlds depending on your personal preferences
  • Numerous corporate benefits, such as childcare subsidy, job ticket, sports offer, company pension scheme, employee discounts
  • An individual development plan for each employee guarantees continuous personal growth and learning
  • With a highly sophisticated onboarding program we ensure a smooth integration
  • You have a share in the best practice of the e-learning industry