Bartosz Grabski

Fullstack Developer · Kraków, Poland

Open for workbartoszgrabski.dev
  • hello@bartoszgrabski.dev
  • linkedin.com/in/bgrabski
  • github.com/bartosz-grabski
  • cal.com/bartosz-grabski

experience

Full Stack Engineer at Voyantis

2022-01 — 2026-03

Tel Aviv, Israel (Remote)

Built internal tools for data scientists and customer managers at an Israeli AI startup.

  • Foresight UI — React + NestJS/TypeORM/Postgres admin dashboard used by customer-facing teams, built in an NX monorepo.
  • Dexter's Lab — Dash/Plotly dashboard with FastAPI / Flask backend for monitoring, deploying and managing predictive models and data backfills.
  • Built efficient data loading jobs and dbt transformation scripts to centralize, clean, and model data within Snowflake.
  • Developed batch pipeline jobs to extract complex data from Snowflake and replicate it into user-adjacent Postgres instances
  • Engineered BI event tracking architecture using Mixpanel
  • Implemented properietary Postgres MCP server to streamline development
  • App Monitoring and Alerting using Coralogix

Full Stack Engineer at FQ Enterprises AS

2021-01 — Present

Norway (Remote, Part-time)

End-to-end development of Layn, a queuing management system, using Flutter for client app and Firebase / GCS (BigQuery) for backend and analytics.

Senior Software Engineer at IGT Poland

2018-12 — 2022-07

Warsaw, Poland

Development and maintenance of enterprise-scale gaming platforms powering national lotteries across multiple countries.

  • Engineered a robust lottery backend utilizing Java, Spring, JBoss EAP, integrating DB2, ActiveMQ Artemis, Apache Camel, and JMX for enterprise messaging and monitoring.

HSBC Service Delivery

2018-08 — 2018-02

Kraków, Poland

Acting Tech Lead2018-08 — 2018-12

Led Originations SSP — a programme migrating 150+ customer journeys (loans, cards, mortgages) to a cloud-hosted tech stack.

Senior Fullstack Engineer2018-02 — 2018-08

End-to-end new-to-bank loan application journey; TypeScript/React/Redux frontend, Java/Spring Boot/Mongo backend.

Senior Software Engineer2017-07 — 2018-02

Delivered RACoE — lifecycle management of customer retirement cases, reducing manual processing at the bank.

Freelance Web Developer at ReasonApps

2018-03 — 2018-05

Kraków, Poland

Short-term freelance React development engagement.

Freelance Web Developer at Leanle

2017-03 — 2017-10

Kraków, Poland

Freelance web development — React applications and WordPress sites.

Java Web Developer at Idium Polska

2014-07 — 2017-07

Kraków, Poland

Subsidiary of Norway's leading media house. Developed and maintained Idium Web+ and Editap CMS platforms; launched Editap on the Norwegian market.

  • Technologies: Java 8, OSGi (Apache Felix), Varnish, AWS, ELK Stack, Docker, Node.js, ES6, Dojo.

Software Engineer Intern at IBM Poland

2013-05 — 2014-07

Kraków, Poland

Contributed to Eclipse Orion/JazzHub, an open-source web IDE and CI/CD platform, and IBM Maximo-based Smart Road Maintenance system.