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November 3, 2026
Lead Software Engineer (Data & Distributed Systems)
Senior • On-site
241,750 - 411,650 PLN/yr
Warsaw, Poland
Quick Facts
Role: Lead Software Engineer (Data & Distributed Systems)
Description
Lead the technical design and hands-on development of scalable backend services, data integrations, and distributed applications. You will build event-driven solutions with Kafka, develop high-performance Java/Spring Boot microservices and REST APIs, and drive data modeling and data processing across enterprise systems. You will also mentor engineers, establish engineering standards for quality, reliability, performance, scalability, and collaborate with frontend engineers to deliver end-to-end capabilities and AI-enabled workflows.
Responsibilities
Lead technical design and development of backend services, data integrations, and distributed applications
Stay hands-on with complex backend components, data processing logic, and integration services
Provide day-to-day technical guidance via design reviews, code reviews, and technical problem-solving
Design and build event-driven solutions using Kafka and asynchronous processing patterns
Drive data modeling, ingestion, transformation, and integration across enterprise systems
Develop high-performance APIs and microservices using Java and Spring Boot
Collaborate with frontend engineers (Angular/TypeScript) for end-to-end application capabilities
Support AI-enabled capabilities such as data preparation and retrieval workflows integrated with AI services
Establish engineering standards for data quality, reliability, performance, scalability, and maintainability
Champion automated testing, CI/CD, observability, secure development, and operational resilience
Identify and resolve complex issues involving distributed systems, integration failures, and data processing
Mentor engineers and promote knowledge sharing
Requirements
Strong hands-on experience with Java, Spring Boot, REST APIs, and microservices
Strong experience with SQL, relational databases, data modeling, and data integration
Experience with Kafka, event-driven architecture, and asynchronous messaging
Good understanding of distributed systems, scalability, resilience, and performance optimization
Working knowledge of Angular and TypeScript and frontend-backend integration
Experience with data ingestion, transformation, and processing pipelines
Familiarity with Kubernetes/OpenShift, CI/CD, and automated testing
Exposure to AI/LLM technologies, retrieval systems, or AI-driven data processing is advantageous
Demonstrated ability to lead technical delivery while contributing directly to production code
Bachelor’s degree (or equivalent experience); Master’s preferred
Benefits
Hybrid working model (up to 2 days working from home per week)
Employer-paid defined contribution pension plan contribution (6% of pensionable earnings)
Employer-paid private medical care (and preferred-rate coverage for certain family members)
Employer-paid life insurance (and preferred-rate coverage for certain family members)
Employee Assistance Program
Paid parental leave (including additional paid paternity leave)
Sport card subsidized via Social Benefits Fund (preferred-rate coverage for some family members)
Additional benefits via the Social Benefit Fund (e.g., holiday allowance, support for sport/cultural activities, team-building events)
Additional day off for volunteering
Cafeteria/flex benefits platform
Opportunity for an annual discretionary incentive award
Special employee offers and discounts
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