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Senior Data Engineer (LLM)

1 month, 1 week 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
Apply Now
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 6

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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