Must have

• Java

• Microservices

• Kubernetes

• Docker

• AWS

• English

Nice to have

• Quarkus

• Terraform

• Elasticsearch

• Debezium

• ClickHouse

• AI

Requirements description

What we look for

Required Experience

• 7+ years of software engineering experience with at least 4+ years in senior individual contributor roles
• Proven track record of architecting and building large-scale distributed systems in production environments
• Bachelor's or Master's degree in Computer Science, Engineering, or equivalent practical experience
• Technical mentorship experience with demonstrable impact on junior engineers' growth

Technical Expertise

• Expert-level proficiency in Java, Python, or similar backend languages with deep understanding of performance optimization
• Advanced knowledge of distributed systems architecture, including microservices, event-driven architecture, and data consistency patterns
• Production experience with Apache Kafka, Kubernetes, Docker, and cloud platforms (AWS preferred)
• Strong foundation in database design, optimization, and distributed data management
• Experience with infrastructure as code, CI/CD pipelines, and DevOps practices
• Understanding of system observability, monitoring, and debugging complex distributed systems

Leadership & Soft Skills

• Proven ability to lead technical initiatives and influence engineering decisions across teams
• Excellent communication skills with experience presenting technical concepts to diverse stakeholders
• Growth mindset with enthusiasm for learning new technologies and sharing knowledge with others
• Strong problem-solving abilities with experience debugging complex production issues
• Collaborative approach to engineering with experience working in cross-functional teams
• Fluency in English(speaking and writing) as our company language

Bonus points

• Staff Engineer experience or demonstrated readiness for technical leadership roles
• Experience with Quarkus, Terraform, Elasticsearch, Debezium, ClickHouse, or similar technologies
• Experience with LLMs/MCP/Agents (Claude/Gemini/AWS Bedrock)
• Open source contributions or technical writing/speaking experience
• Previous experience scaling engineering teams or establishing technical standards
• Entrepreneurial mindset with experience in fast-growing technology companies

Offer description

As a Senior Platform Software Enginee r, you will play a key role in designing and building the foundational systems that support our entire platform. You’ll work with modern technologies such as Quarkus, Kafka, RabbitMQ, ClickHouse, AWS, PostgreSQL, Debezium, and LLMs/MCP using Java, Python, JavaScript/TypeScript, and Kotlin. You’ll focus on delivering highly scalable and maintainable platform services, contributing deep technical expertise and driving improvements across codebases and system architecture. You will collaborate closely with cross-functional teams and share your knowledge to raise the technical bar across the organization.

What we offer

• Competitive salary
• Phone & Home Internet costs reimbursement up to 80 PLN/month
• Private health care package with Luxmed – covered for you and partially for your partner / family
• Cafeteria benefits – monthly budget to cover sport cards or other purchases
• Creative Allowance – paid as 1000 PLN gross/month
• Home office set-up reimbursement up to 1000 PLN
• Personal Learning & Development Budget of 1500 USD/year
• Sabbatical Program – 1 month paid leave at 3, 6, 10 year tenure
• 26 days of annual leave/year
• 2 Mental Health days off per year

Benefits listed above are part of the compensation package for a contract of employment.

Your responsibilities

1. Platform Development: Contribute to the design & implementation of complex backend services that support large-scale, business-critical workloads. Focus on scalability, maintainability, and performance
2. System Design: Design and build highly scalable, fault-tolerant distributed systems using microservices architecture and cloud-native patterns. Review architectural docs and provide guidance for cross-team feature implementation
3. Cross-team Collaboration: Work closely with product engineering teams to understand requirements and design platform solutions that accelerate their delivery
4. Mentorship: Guide and develop junior and mid-level engineers through code reviews, pair programming, and technical mentoring
5. Technical Strategy: Contribute to technical roadmap planning and architectural decisions that balance innovation with maintainability
6. Engineering Excellence: Drive best practices in code quality, testing, monitoring, and deployment across the platform organization

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