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Senior Data Engineer (LLM)

3 months, 3 weeks ago
Poland
Full-time
Senior
Data Engineer
Software Development
Apache Airflow AWS CI/CD Docker EC2 FastAPI Git Jenkins Jupyter Kubernetes Linux LLM Machine Learning Neo4j Next.js OAuth OpenID Connect OpenTelemetry Pandas Python React Snowflake SQL Statistics Terraform
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Vecten

Vecten

Vecten specializes in developing proprietary data infrastructure and AI systems tailored for private capital and healthcare sectors, enabling organizations to transform fragmented information into a strategic competitive advantage.

Internet Software & Services
View All Jobs 5

Description

  • Develop proof-of-concepts using modern technologies and third-party integrations.
  • Own and evolve the Next.js/React frontend, including authenticated flows and secure session handling.
  • Deliver production-grade applications after validating proof-of-concepts.
  • Build solutions that help data scientists and business analysts work more independently.
  • Design and implement secure, scalable access patterns, including OAuth2/OIDC and authorization boundaries.
  • Explore and implement GenAI applications with vector and graph data stores.
  • Contribute to FastAPI backend services and agent-driven workflows across the stack.
  • Develop data warehouse and ETL components for batch and streaming data pipelines.
  • Build data flows for data fetching, aggregation, and data modeling.
  • Document design decisions before implementation.

Requirements

  • 5+ years of professional experience in a data-related or full-stack engineering role.
  • An undergraduate or graduate degree in Computer Science, Engineering, Mathematics, or a similar field.
  • Strong proficiency in Next.js and React for frontend development.
  • Expertise in Python and SQL.
  • Experience with data warehouses, especially Snowflake, and other databases including RDBMS, vector, and graph technologies.
  • Proven experience building secure, scalable web applications.
  • Hands-on experience with AWS services and Docker.
  • Experience with infrastructure-as-code tools such as Terraform.
  • Excellent spoken and written English at C1 level or higher.
  • Creative problem-solving skills, strong technical documentation, and ability to work across Windows and Unix-like systems.
  • Experience with FastAPI or other Python web frameworks (preferred).
  • Knowledge of OAuth2/OIDC flows, PKCE, and token/session handling (preferred).
  • Experience integrating LLMs, including OpenAI and possibly open-source models (preferred).
  • Experience with agent frameworks such as OpenAI Agents, Agno, Strands, or MCP-style integrations (preferred).
  • Understanding of fine-tuning, embeddings, and vector semantic search for LLMs (preferred).
  • Experience with Pinecone or Neo4j (preferred).
  • Experience with observability tooling such as OpenTelemetry (preferred).
  • Experience building ETL processes and data pipelines with Airflow or similar platforms (preferred).
  • Experience with AWS ECS, VPCs, and secure networking patterns (preferred).
  • Proficiency in statistics and machine learning with Python libraries (preferred).
  • Experience with repository managers such as JFrog Artifactory (preferred).

Benefits

  • Flexible working hours and remote work possibility.
  • Work alongside a talented team of software engineers.
  • A culture of teamwork, professional development, and knowledge sharing.
  • Comfortable office in central Warsaw.
  • Office equipment including MacBook Pro or Dell laptop, external screen, and ergonomic chairs.

Interested in this position?

Apply directly on the company website

Apply Now

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