Senior Full Stack Engineer - Full Stack Development

Our client is a forward-thinking technology company based in Krakow, dedicated to transforming education through innovative digital platforms. They build scalable, user-centred learning solutions that empower students and teachers alike. The organisation values technical excellence, collaborative problem-solving, and continuous improvement. They're growing their engineering team to expand their platform capabilities and deliver impactful educational experiences to a global audience.

• 10+ years of professional software development experience.
• Strong expertise in React, TypeScript and JavaScript for frontend development.
• Proven experience designing and maintaining Python backend APIs.
• Solid understanding of microservices architecture and distributed systems.
• Experience with asynchronous processing, message queues (SQS, Celery) and event-driven systems.
• Hands-on experience with both NoSQL (DynamoDB) and relational (PostgreSQL) databases.
• Familiarity with CI/CD pipelines, deployment automation and infrastructure as code.
• Experience implementing observability solutions (logging, metrics, tracing, alerting).
• Knowledge of API design, REST principles and integration patterns.
• Demonstrated ability to write clean, maintainable, well-tested code.
• Strong communication skills and experience working collaboratively in cross-functional teams.

Nice to have:

• Experience with AI/LLM integration.

• Build and ship production React features for student-facing learning flows and teacher dashboards using TypeScript and JavaScript.
• Write clean, maintainable code across the frontend codebase, managing state with Redux, Zustand or Context API.
• Design and maintain Python backend APIs handling asynchronous processing and distributed services.
• Implement asynchronous processing and queue-based communication between services using SQS and Celery.
• Design data access patterns across NoSQL (DynamoDB) and relational (PostgreSQL) databases.
• Integrate backend services with internal systems, external APIs and AI/LLM-based components.
• Build and maintain operational tooling for day-to-day platform tasks and monitoring.
• Contribute to observability by implementing logging, metrics, tracing and alerting across distributed services.
• Set up and improve CI/CD pipelines and deployment automation to enhance team velocity.
• Ensure UI components are accessible, responsive and performant across all devices.
• Write unit and integration tests for frontend components and backend flows.
• Collaborate closely with design and product teams to translate requirements into polished, usable interfaces.
• Raise the bar through thorough code reviews and clear technical documentation.