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November 3, 2026

Lead Java Backend Developer

Senior • On-site

Wrocław, DS, Poland

Quick Facts

  • Role: Lead Java Backend Developer

  • Focus: Distributed systems, real-time streaming/time-series platforms, cloud-native architectures

  • Work model: Hybrid; required to work from the client’s office 3 days per week

Description

Lead the design and architecture of scalable enterprise platforms for high-throughput, mission-critical environments. Build and maintain real-time streaming and time-series data platforms, and develop microservices using modern Java frameworks. Apply security and resilience engineering best practices across backend systems.

Responsibilities

  • Design and architect scalable enterprise platforms using distributed systems and cloud-native architectures

  • Build and maintain high-performance, high-throughput real-time streaming and time-series data platforms

  • Develop microservices and data streaming solutions with modern Java frameworks

  • Apply resilience engineering and security best practices across backend systems

  • Translate business requirements into global technical solutions

  • Collaborate with cross-functional technology teams to deliver integrated solutions

  • Use AI-assisted tools to improve software development efficiency

  • Implement CQRS and Event Sourcing patterns within enterprise architecture

  • Ensure adherence to SDLC best practices and modern software development standards

  • Adapt architecture and engineering approaches to complex business and regulatory domains

Requirements

  • 7+ years of experience in Java and Spring Boot development

  • Expertise in ORM frameworks including JPA and iBatis

  • Knowledge of security protocols such as Azure AD and OAuth

  • Proficiency in Kafka, CosmosDB, PostgreSQL, and Redis

  • Familiarity with REST, Azure, Docker, and Kubernetes

  • Skills with build tools such as Maven and Gradle

  • Background in microservices and data streaming architectures

  • Understanding of CS fundamentals and modern software development practices, including SDLC

  • Demonstrated ability with AI-assisted software development

  • Strong communication skills to translate business needs and collaborate with technology teams

  • English proficiency at B2 level or higher

Benefits

  • Career development programs; thought leadership, mentoring, soft skills, and well-being programs

  • Certifications (Anthropic, Gemini, GCP, Azure, AWS)

  • English classes

  • Stable pay

  • Employee Stock Purchase Plan with a 15% discount

  • Benefits package: health insurance, MultiSport, shopping vouchers

  • Referral bonuses up to $2,000

  • Office amenities and events, including entertainment/relaxation zones, table tennis/football, free snacks, and coffee

  • Corporate, social, and well-being events

  • Opportunity to work abroad for up to 60 days annually; business-driven relocation opportunities

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