Сергій

Senior Python Backend Engineer (Microservices, AWS, GenAI, RAG App)

Age:
30 years
City of residence:
Kyiv
Ready to work:
Remote

Contact information

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Work experience

Senior Python Backend Engineer

from 08.2021 to 06.2026 (4 years 11 months)
Quintagroup, Львів (IT)

Engineered and launched an AI-driven RAG application from concept to production, building core data ingestion pipelines and optimizing vector search (Weaviate, Qdrant) with metadata enrichment.

Architected an asynchronous backend using Django (DRF), Celery, and Apache Kafka to handle long-running LLM inferences without blocking core microservices.

Integrated third-party AI APIs for automated document processing, extracting structured data from raw files to continuously feed the knowledge base.

Optimized high-load architectures by refining complex PostgreSQL queries, MongoDB aggregations, and implementing robust Redis caching.

Orchestrated event-driven serverless workflows via AWS Lambda and Step Functions, streamlining data retrieval and S3 storage management.

Collaborated with the CTO to shape the AI technical roadmap, managed on-call operations, and ensured system reliability through comprehensive Pytest suites.

Middle Python Backend Engineer

from 10.2019 to 08.2021 (1 year 11 months)
Computools, Запоріжжя (IT)

Developed core backend services for end-to-end web platforms using Django and Django REST Framework (DRF), supporting dynamic client-side applications built with React.js.

Engineered complex data ingestion pipelines and maintained asynchronous Celery tasks for background processing and automated system communications.

Designed and optimized relational database schemas in PostgreSQL to ensure high performance and data integrity.

Implemented secure user authentication flows and authorization mechanisms utilizing JWT

Education

Zaporizhzhya National Technical University

Specialty 151: Automation and computer-integrated technologies., Запоріжжя
Higher, from 2022 to 2026 (4 years)

Knowledge and skills

  • Python
  • GitHub
  • JavaScript
  • MySQL
  • Docker
  • PostgreSQL
  • Django
  • FastAPI
  • Ai
  • Rag
  • Git
  • Наполегливість
  • Адаптивність
  • Неконфліктність

Language proficiencies

English — above average

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