Senior Fullstack Engineer – Java, Kotlin, JavaScript

This is a fully remote position, open to applicants in Poland.

📋 Description

• Ensure smooth onboarding processes for external partners through effective API contract design.

• Develop high-quality documentation for developers.

• Establish mock environments to facilitate partner integrations.

• Lead the creation of contemporary web interfaces, including checkout paths, landing pages, and discovery hubs.

• Construct frontend interfaces that utilize integrated partner services.

• Connect Java backend architecture with modern frontend development practices.

• Serve as the technical leader and architectural foundation for integrations within the New Ventures Core Tech sector.

• Assist in launching innovative services in collaboration with external strategic partners.

⛳️ Requirements

• Extensive, hands-on experience with Java and Kotlin.

• Proven expertise in designing, building, and scaling RESTful APIs.

• Familiarity with API-first design methodologies and OpenAPI/Swagger.

• Proficient in modern JavaScript/TypeScript and a contemporary framework, with a strong preference for React.

• Comprehensive understanding of distributed systems and integration patterns.

• Knowledge of secure authentication protocols, including OAuth 2.0 and OpenID Connect.

• Ability to establish coding standards, lead technical discussions, and develop adaptable API contracts for external B2B partners.

• Minimum English proficiency level of B2+.

• Availability for the Incident Response service.

• Experience managing data isolation and security standards is a plus.

• Enthusiasm for exploring and implementing Agentic AI tools like Copilot and LangGraph is a plus.

🏝️ Benefits

• Access to the Worksmile platform.

• A work environment that promotes growth and innovation.

• B2B contract.