Backend Engineer (Europe) - Low-Latency APIs & Pipelines

People AI; Polska; On-site; PLN 469,000 - 665,000; Full time

Job summary

Backstory.ai is seeking a Software Engineer for the XCore team to build foundational systems powering identity, authorization, audit logging, and BI exports. You will design low-latency APIs and scalable distributed services in a focused, technically deep environment.

You will contribute to data pipelines, observability, and tooling, collaborating with Product and Engineering to ship reliable features. The role emphasizes ownership, learning, and delivering impact across the company.

Qualifications

• 3+ years of professional experience building backend systems in an enterprise environment.
• 1+ years programming in Python or Scala.
• Solid understanding of microservices and service-oriented architectures.
• Familiarity with databases, caching strategies, and low-latency service design.
• Experience building and consuming REST APIs with reliability and client experience.
• Exposure to data synchronization patterns and high-consistency data pipelines.
• Able to navigate and contribute to an unfamiliar codebase with guidance, working toward incremental improvements.
• Appreciation for automation and reducing manual operational toil.
• Experience with Spark or big data processing is a plus.
• Good communication skills with the ability to participate meaningfully in product and engineering discussions.

Responsibilities

• Build and maintain performant, low-latency APIs and distributed microservices handling identity, authorization, user profiles, settings, and product configurations.
• Implement and maintain data pipelines that move large volumes of data with consistency and reliability, including audit-log systems and BI data exports.
• Maintain and improve existing features based on user feedback and evolving product requirements.
• Follow and promote engineering best practices, including structured logging, cross-service request tracking, and robust error management.
• Contribute to production observability through alerting, dashboards, and runbooks.
• Build tooling to reduce manual operations for engineering teams and support customer support self-service workflows.
• Contribute to feature development end-to-end: from participating in requirement discussions with Product, through implementation, to production monitoring.

Skills

Backend development

Python/Scala

Microservices/SOA

Databases & caching

REST APIs

Data pipelines

Automation

Spark

Communication

Job description

Backstory.ai is seeking a Software Engineer for the XCore team to build foundational systems powering identity, authorization, audit logging, and BI exports. You will design low-latency APIs and scalable distributed services in a focused, technically deep environment.

You will contribute to data pipelines, observability, and tooling, collaborating with Product and Engineering to ship reliable features. The role emphasizes ownership, learning, and delivering impact across the company.