Schedule - PGConf.DE 2025

Josef Machytka

Josef Machytka works as Technical Account Manager at Data Bene.

Born 1969 in Czech republic, dipl. engineer, Technical University Ostrava, Czech rep., field automation and robotics, living since 2014 in Berlin, Germany.

• 33+ years of experience with different databases - PostgreSQL (12y), BigQuery (7y), Oracle (15y), MySQL (12y), Elasticsearch (5y), MS SQL (5y), Sybase, Informix, FoxPro
• 10+ years of experience with high speed and volume data ingestion pipelines, data analysis, data lake and warehouse and related topics
• 3+ years of practical experience with different LLMs / AI including their architecture and principles.

LinkedIn: www.linkedin.com/in/josef-machytka Medium.com: https://medium.com/@josef.machytka ResearchGate.com: https://www.researchgate.net/profile/Josef-Machytka
Academia.edu: https://netapp.academia.edu/JosefMachytka

Speaker portfolio: https://medium.com/@josef.machytka/josef-machytka-speaker-portfolio-efd5a75e6a3b

Latest speaking engagements:

• 2026.08.16 - FrOSCon 2026

  • Linux and PostgreSQL in the Multiverse of Connections (v3)

• 2026.06.25 - Swiss PG Day 2026

  • keynote: The Next Generation Story of PostgreSQL: From Systems Mechanics to Experience Builders

• 2026.06.17 - POSETTE 2026

  • Linux and PostgreSQL in the Multiverse of Connections (v2)

• 2026.05.23-24 - FedCon 2026 Bonn (sci-fi convention)

  • Beyond AI-Generated Rubbish (usage of AI tools for creative writing)
  • The Chosen One is Boring (methods for creative story telling)

• 2026.05.05 - PG Conf Belgium

  • Migrating Legacy & Proprietary Databases to PostgreSQL

• 2026.04.26-28 - HOW2026 Jinan China

  • 3-hours workshop: The Alchemy of Shared Buffers: Balancing Concurrency and Performance
  • talk: Linux and PostgreSQL in the Multiverse of Connections

• 2026.04.21-22 - PostgreSQL Conference Germany

  • Beyond work_mem Myths: A Source‑Code‑Guided Tour Through PostgreSQL Memory Usage (v2)
  • Migrating Legacy & Proprietary Databases to PostgreSQL with credativ-pg-migrator

• 2026.03.28 - Chemnitzer Linux Tage

  • workshop: Everything, Everywhere, All At Once About PgBouncer
  • talk: Migrating Legacy and Proprietary Databases to PostgreSQL

• 2026.03.24 - NORDIC PGDay 2026 Helsinki

  • Beyond work_mem Myths: A Source‑Code‑Guided Tour Through PostgreSQL Memory Usage

• 2026.02.06 - CERN PGDay 2026

  • The Alchemy of Shared Buffers: Balancing Concurrency and Performance

• 2026.01.27 - Prague PostgreSQL Developer Day 2026

  • 3 hours workshop: PgBouncer — Everything, Everywhere, All At Once About This Tool

• 2026.01.26 - Prague PostgreSQL MeetUp

  • Self-Driving PostgreSQL: Should we allow our database to auto-tune itself while we sleep?

• 2025.11.13 - PostgreSQL November Meetup Berlin

  • PostgreSQL 18 — New Features & Improvements

• 2025.11.13 - credativ internal workshop (5 talks)

  • PostgreSQL 18 — New Features & Improvements
  • Database in Distress — Testing and Repairing Different Types of Database Corruption
  • Fast & Prepared — Prepared Statements in PostgreSQL
  • PgBouncer — Guardian of PostgreSQL’s Gates
  • Sorting Out Collations in PostgreSQL — Implementation, Upgrades, Survival Strategies

• 2025.10.24 - PostgreSQL Conference Europe 2025

  • Database in Distress: Testing and Repairing Different Types of Database Corruption

• 2025.10.15 - Postgres Ibiza 2025

  • Iceberg Ahead! PostgreSQL Sailing Confidently in Data Lakehouse Waters

• 2025.09.22 - Prague PostgreSQL Meetup: September Edition

  • PostgreSQL Connections Memory Usage on Linux: How Much, Why, and When?

• 2025.09.12 - PG Day Lowlands 2025

  • Database in Distress: Testing and Repairing Different Types of Database Corruption

• 2025.09.11 - PostgreSQL Usergroup NL MeetUp Rotterdam

  • Lightning talk: Boldly Migrate to PostgreSQL with credativ-pg-migrator

• 2025.07.02 - Armenia PostgreSQL User Group Online MeetUp

  • PostgreSQL Connections Memory Usage: How Much, Why and When

• 2025.06.27 - Swiss PostgreSQL Conference 2025

  • "Building a Data Lakehouse with PostgreSQL: Dive into Formats, Tools, Techniques, and Strategies (version3)"
  • Lightning talk: "Boldly Migrate to PostgreSQL with credativ-pg-migrator"

• 2025.06.19 - PostgreSQL Meetup Berlin - June edition

  • "Database in Distress: Testing and Repairing Different Types of Database Corruption"
  • Lightning talk: "Boldly Migrate to PostgreSQL with credativ-pg-migrator"

• 2025.06.03 - 5. PostgreSQL User Group NRW MeetUp (Mönchengladbach, Credativ GmbH)

  • "Boldly Migrate to PostgreSQL with credativ-pg-migrator"

• 2025.05.08–09 PostgreSQL Conference Germany 2025 (3 talks)

  • “Building a Data Lakehouse with PostgreSQL: Dive into Formats, Tools, Techniques, and Strategies”
  • “PostgreSQL Connections Memory Usage on Linux: How Much, Why, and When?”
  • “Your Data Deserves the Best: Migration to PostgreSQL”

• 2025.01.29 Prague PostgreSQL Developer Day 2025

  • "Building a Data Lakehouse with PostgreSQL: Dive into Formats, Tools, Techniques, and Strategies"

• 2025.01.27 NetApp internal talk

  • "PostgreSQL Connections Memory Usage: How Much, Why, and When?"

• 2025.01.23 NetApp internal talk

  • "Building a Data Lakehouse with PostgreSQL: Dive into Formats, Tools, Techniques, and Strategies"

• 2025.01.08 PostgreSQL MeetUp for All online event

  • “PostgreSQL and DuckDB: Supercharging ad-hoc Data Analysis and ETL”

• 2024.11.26 NetApp internal talk

  • "PostgreSQL and DuckDB: combining for quicker Data Analysis and ETL processing"

• 2024.11.15 - NetApp Tech Talk

  • "Many facets of AI hallucinations: factual errors, deep fakes, and creativity"

• 2024.11.12 - Internal Workshop - 3 talks:

  • "PostgreSQL 17: New Features"
  • "PostgreSQL Architecture: How PostgreSQL functions under the Hood"
  • "PostgreSQL Partitioning: Overview of Solutions, Tips & Tricks, Performance"

• 2024.10.29 Prague PostgreSQL MeetUp

  • "PostgreSQL and DuckDB: Analytics Performance and Use Cases"

• 2024.10.16 NetApp internal workshop - "AI Workshop: Exploring Artificial Intelligence" - 3 talks

  • "The AI Dilemmas: The Philosophical, Ethical, and Legal Implications of AI"
  • "Understanding the Magic of LLMs: A Deep Dive into the Internal Structure of LLMs"
  • "Many facets of AI hallucinations: factual errors, deep fakes, and creativity"

• 2024.10.09 PostgreSQL MeetUp Berlin

  • "GIN, BTREE_GIN, GIST, BTREE_GIST, HASH and BTREE indexes on JSONB data"

• 2024.09.27 NetApp internal talk

  • "Beyond the Buzzwords: A pragmatic explanation of LLM terminology"

• 2024.10.13 NetApp internal talk

  • "The Art and Science of AI Prompt Engineering"

• 2024.07.16 -  PostgreSQL MeetUp Berlin July 2024 - Lightning talk: "Can PostgreSQL have a more prominent role in the AI boom?"

• 2024.06.27 Swiss PG day

  • "GIN, BTREE_GIN, GIST, BTREE_GIST, HASH and BTREE indexes on JSONB data"
  • Lightning talk: "Can PostgreSQL have a more prominent role in the AI boom?"

• 2024.06.05 Prague PostgreSQL Developer Day

  • "GIN, BTREE_GIN, GIST, BTREE_GIST, HASH and BTREE indexes on JSONB data"

Sessions

• Building a Data Lakehouse with PostgreSQL: Dive into Formats, Tools, Techniques, and Strategies
• PostgreSQL Connections Memory Usage: How Much, Why and When?