SS

Senior Backend Engineer

Posted 28 days ago

RemoteWarsaw, Masovian Voivodeship, PolandSE

Job Description

  • Design and develop scalable AI-powered backend systems for SysML-based engineering environments
  • Build and maintain distributed data ingestion and ETL pipelines for large-scale engineering artifacts and technical documentation
  • Develop and optimize LLM-powered workflows for metadata extraction, semantic analysis, and entity resolution
  • Implement AI agents and multi-agent orchestration workflows
  • Design and improve RAG-based architectures and semantic retrieval pipelines
  • Develop graph-based knowledge representation and traceability analysis solutions
  • Work with graph databases, graph processing libraries, and semantic relationship modeling
  • Build and optimize distributed data processing workflows using Apache Spark
  • Collaborate with cross-functional engineering teams to integrate AI capabilities into platform services
  • Design scalable and high-performance APIs and backend services
  • Improve system reliability, scalability, observability, and performance across distributed environments
  • Participate in architecture discussions and technical decision-making processes
  • Contribute to cloud-native infrastructure and deployment workflows
  • Support deployments in secure, air-gapped, or classified environments when required
  • Create and maintain technical documentation and engineering best practices

Qualifications

  • At least 5 years of commercial experience in software engineering, Data Engineering, or AI systems development
  • Experience with at least one JVM language
  • Hands-on experience building distributed and scalable systems
  • Practical experience with LLM-based applications and AI integrations
  • Experience building AI agents and multi-agent systems
  • Strong understanding of RAG architectures and semantic retrieval workflows
  • Hands-on experience with graph technologies, graph libraries, and graph databases
  • Strong understanding of ETL pipelines and large-scale data ingestion workflows
  • Experience with cloud-native infrastructure and distributed environments
  • Practical experience with backend platform development and API integrations
  • Good understanding of semantic search, entity resolution, and metadata extraction
  • Experience working with highly scalable and high-performance systems
  • Strong problem-solving and communication skills
  • Upper-Intermediate level of English

WILL BE A PLUS

  • Background in Data Engineering
  • Experience with  distributed data processing, Apache Spark, or Apache Beam
  • Experience with Knowledge Graphs and graph-based semantic modeling
  • Familiarity with MBSE or SysML environments
  • Experience supporting air-gapped or classified environments
  • Experience with vector databases and embedding pipelines
  • Experience with Kubernetes and cloud platforms such as AWS, GCP, or Azure

Additional Information

PERSONAL PROFILE

  • Analytical mindset with strong problem-solving skills
  • Ability to work independently and in a distributed team
  • Adaptability to secure and classified environments
  • Strong communication and collaboration abilities
  • Passion for AI-driven engineering solutions
Job details
Workplace
Remote
Location
Warsaw, Masovian Voivodeship, Poland
Experience
SE
SS
Sigma Software
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