Senior Backend Engineer (Python)

StairwaySoft is an Israeli-Ukrainian engineering provider of custom software solutions for SMBs and startups. We’re looking for a Senior Backend Engineer to join a product team building a compliance and business verification platform for financial institutions and fintech companies.

The product helps regulated businesses verify companies, process business data, and automate compliance workflows using real-time data and AI-driven automation. The platform operates in a security-sensitive environment where reliability, performance, and data quality are critical.

Responsibilities:

Design and develop customer-facing REST APIs and supporting documentation

Build and own backend services from architecture through implementation and production support

Develop secure and reliable data ingestion and processing pipelines

Build scraping and parsing components for collecting and structuring external data

Design backend systems with scalability, resilience, and performance in mind

Work with asynchronous processing, queues, pub/sub, retries, idempotency, and eventual consistency

Monitor how features perform in production and improve them based on real usage and customer feedback

Contribute to engineering standards, technical decisions, and development practices

Work closely with product and other stakeholders to understand problems and deliver practical solutions

Requirements:

5+ years of commercial backend engineering experience

3+ years of experience with Python, or strong experience with a similar backend language and willingness to work primarily in Python

Strong experience designing and maintaining REST APIs

Experience owning backend systems end-to-end in production

Good understanding of distributed systems and asynchronous processing

Strong experience with relational databases such as PostgreSQL or MySQL

Solid knowledge of data modelling, indexing, query optimization, and schema evolution

Experience working with cloud environments such as GCP, AWS, or Azure

Experience with CI/CD and production deployments

Strong product mindset and ability to understand the business problem behind a technical task

Upper-Intermediate English proficiency

Would be a strong advantage:

Experience building web scrapers at scale

Experience in fintech, KYC/AML, fraud, compliance, or other regulated domains

Experience with high-throughput data pipelines or stream processing

Experience with Kafka, Pub/Sub, Dataflow, or Flink

Experience with Rust, Go, or C++ for performance-critical components