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Senior Data Engineer (Go)
  • Kraków
Senior Data Engineer (Go)
Kraków, Kraków, Lesser Poland Voivodeship, Polska
N-iX
30. 3. 2026
Informacje o stanowisku

We are a leading European AI company developing large language models and generative platforms for enterprise and government clients.Our products combine high-performance technologies, data security, and transparency, fully aligned with European regulatory and ethical standards.

As a Data Engineer , you will design, build, and maintain high-performance backend services and data pipelines , enabling our teams to deliver scalable, reliable, and production-ready systems.

Responsibilities:

  1. ETL Data Pipelines (Batch & Streaming)

  • Develop and operate ETL pipelines to extract, transform, and load data from multiple sources

  • Support both batch workloads (large-scale periodic data processing) and streaming workloads (real-time or near-real-time data flows)

  • Optimize performance, scalability, and reliability of data processing pipelines

  • Collaborate with data engineers and analysts to ensure high-quality, clean, and accessible datasets

  1. ML Data Pipelines using Temporal

  • Design, implement, and maintain robust ML data pipelines for training, validation, and inference of machine learning models

  • Use Temporal for workflow orchestration, ensuring reliability, retries, and state management across complex ML workflows

  • Collaborate closely with ML engineers and researchers to automate and scale model pipelines

  • Ensure pipelines are reproducible, maintainable, and observable

  1. Backend Services & Infrastructure

  • Design, build, and maintain backend services in Go 

  • Work with PostgreSQL and object storage (S3) to store and manage structured and unstructured data

  • Deploy and manage services using Kubernetes (K8s) and Helm

  • Implement best practices in CI/CD using GitHub Actions

  • Apply system design and data modeling principles, handling concurrency and performance optimization

Requirements:

  • 3+ years of commercial experience in Go (most of which in a production setup with real customers)

  • Strong knowledge of ETL pipeline development (batch and streaming workloads)

  • Experience with Temporal or other asynchronous workflow orchestration tools

  • Experience with PostgreSQL and object storage (S3)

  • Familiarity with Kubernetes (K8s) and Helm

  • Understanding of concurrency patterns and performance optimization in Go

  • Experience building and operating ML data pipelines is highly desirable

  • Strong collaboration skills and attention to detail

Nice to Have:

  • Experience designing APIs/SDKs

  • Experience with complex migrations or data model changes

  • Knowledge of TDD, DDD, or other development best practices

  • Familiarity with resiliency patterns (retries, circuit breakers)

  • Experience integrating backend systems with ML models

  • Experience with OpenFGA or similar tools

  • Familiarity with stakeholder management and brief, concise communication

Technology Stack:

  • Core Backend: Python (FastAPI), Go

  • Data Storage: PostgreSQL, S3 / object storage

  • Workflow Orchestration: Temporal (for ML pipelines)

  • ETL: Batch and streaming pipelines

  • DevOps & Infrastructure: Kubernetes (K8s), Helm, GitHub Actions

  • Internal Tools: TypeScript / Nx for CLI automation (if applicable)

  • Praca Kraków
  • Kraków - Oferty pracy w okolicznych lokalizacjach


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