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Senior Node.js Engineer (Big data) @ Acaisoft
  • Warsaw
Senior Node.js Engineer (Big data) @ Acaisoft
Warszawa, Warsaw, Masovian Voivodeship, Polska
Acaisoft
5. 2. 2026
Informacje o stanowisku

Hi there! If you’re looking for a high-impact position in an ambitious software house, we’ve got a match for you!

We are looking for a Node.js Engineer to work with a leading consumer purchase insights company that leverages AI and fully permissioned data from 100M+ consumers to transform purchase signals into actionable business and marketing insights.

You will join our core engineering team and work closely with the Lead Engineer. You’ll help expand and future-proof a mission-critical RESTful API that powers insights from massive-scale credit card transaction data. This is not a standard CRUD environment, because our client processes 200+ billion rows. We are looking for someone who writes high-performance SQL, and understands distributed systems. 

The current stack includes Node.js, Apigee, AWS (Redshift, RDS Postgres, S3). You’ll maintain this high-performance environment while helping drive a migration toward a modern, serverless, Snowflake-based architecture.

Working hours: up to a maximum of 7:00 PM CET, with particular importance placed on availability during the final hours of the workday.


  • At least 5 years of commercial experience with Node.js.
  • Expert SQL skills: indexing, query planning, and performance tuning at massive scale.
  • Strong experience with AWS (S3, RDS/Postgres, Redshift).
  • Experience designing APIs with Swagger/OpenAPI.

Nice to have:

  • Familiarity with Apigee.
  • Experience with Snowflake or other cloud native data warehouses.
  • Exposure to serverless architectures (AWS Lambda, API Gateway).
  • FinTech experience, especially with transactional or credit card data.

Hi there! If you’re looking for a high-impact position in an ambitious software house, we’ve got a match for you!

We are looking for a Node.js Engineer to work with a leading consumer purchase insights company that leverages AI and fully permissioned data from 100M+ consumers to transform purchase signals into actionable business and marketing insights.

You will join our core engineering team and work closely with the Lead Engineer. You’ll help expand and future-proof a mission-critical RESTful API that powers insights from massive-scale credit card transaction data. This is not a standard CRUD environment, because our client processes 200+ billion rows. We are looking for someone who writes high-performance SQL, and understands distributed systems. 

The current stack includes Node.js, Apigee, AWS (Redshift, RDS Postgres, S3). You’ll maintain this high-performance environment while helping drive a migration toward a modern, serverless, Snowflake-based architecture.

Working hours: up to a maximum of 7:00 PM CET, with particular importance placed on availability during the final hours of the workday.

,[Build and maintain scalable RESTful APIs using Node.js., API Development., Define and maintain Swagger / OpenAPI specifications., Write complex, highly optimized SQL for datasets exceeding 200B+ rows., Partner with the Lead Engineer to migrate legacy services into a Snowflake-centric, serverless ecosystem., Data Pipeline Integration., Work across AWS S3, Redshift, and RDS Postgres to ensure high data integrity and efficient data flows., Performance Tuning., Monitor and improve performance across both the Node.js layer and database layer. Requirements: Node.js, AWS, API, Apigee, Snowflake Additionally: Sport subscription, Private healthcare, Flat structure, Small teams, International projects.

  • Praca Warszawa
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