Senior Software Engineer, Data

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On The Spot Development

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Software Development • B2B • Fintech

On The Spot Development is a boutique software development company that specializes in helping fast-growing startups and tech companies to build and scale their products. With a focus on establishing dedicated R&D teams in Poland, they offer services such as custom software development and CTO as a Service. Their business model emphasizes transparency, long-term partnerships, and dedicated teams that operate as extensions of their clients' operations.

51 - 200 employees

Founded 2016

🤝 B2B

💳 Fintech

📋 Description

• Design, build, and maintain high-performance, reliable data systems, including real-time pipelines, tracking infrastructure, and Feature Store foundations to support analytics and ML production • Develop low-latency, scalable data services capable of handling high-throughput workloads in distributed systems • Collaborate closely with ML teams to ensure features and data are accurate, consistent, and readily available • Design and implement data ingestion pipelines, storage schemas, and data quality frameworks to maintain robust and reliable data infrastructure • Apply software engineering best practices - clean code, testing, and system design - to ensure maintainable, high-quality solutions

🎯 Requirements

• Strong software engineering fundamentals (clean code, testing, system design) • Proven experience building real-time, low-latency data services • Experience operating in production at scale (high throughput, distributed systems) • Strong background with modern data stack (e.g., Kafka/Kinesis, Spark/Flink/Beam,Snowflake/BigQuery/Redshift) • Ability to design schemas, ingestion flows, and data quality frameworks • Experience collaborating with ML teams on feature availability and consistency

🏖️ Benefits

• Work in a highly professional team. Informal and friendly atmosphere in the team • Paid vacation — 20 business days per year, 100% sick leave payment • Equipment provision • Partially compensated educational costs (for courses, certifications, professional events, etc.) • Legal and Accounting support in Poland • Ability to work from our comfortable downtown office in Warsaw • 5 sick days per year • Medical insurance (after the end of the probationary period) • English and Polish classes 2 times a week (online) • Bright and memorable corporate life: corporate parties, gifts to employees on significant dates