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Senior Node.js Engineer (Big data) Miejsce pracy: Warszawa Technologies we use Expected Node.js SQL AWS Redshift Swagger Optional Apigee Snowflake Operating system macOS About the project 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. Your responsibilities 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. Our requirements 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. Optional 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. This is how we organize our work This is how we work at the clients site you focus on a single project at a time you can change the project you focus on product development agile What we offer Private medical care Multisport Friendly, informal atmosphere, and direct contact with everyone in the company Modern technologies Benefits sharing the costs of sports activities private medical care remote work opportunities flexible working time computer available for private use extra social benefits baby layette school layette employee referral program charity initiatives Gift vouchers for kids (birthdays, Christmas, Childs Day) Recruitment stages HR call (max 15 min.) Tech check with our team (max 60 min.) If needed, meeting with our client (max 60 min.) ACAISOFT POLAND Sp. z o.o. Acaisoft is a Polish company partnering with industry leaders across healthcare, telecom, fintech, and insurance. We specialize in delivering cloud-native, data-driven, and scalable solutions for enterprises operating in fast-moving environments. We currently serve around 30 active customers worldwide, mostly based in the U.S. We specialize mainly in: * Data Engineering & AI * Cloud-Native Solutions, including Cost Optimization * Platform Engineering Since technology is constantly being developed at such a fast pace, we always strive to be one step ahead of the market and keep up with the latest solutions. Wszystkie informacje o przetwarzaniu danych osobowych w tej rekrutacji znajdziesz w formularzu aplikacyjnym, po kliknięciu w przycisk "Aplikuj Teraz".