
Senior Fullstack Engineer (Java&Kotlin + JavaScript)
Codest Ltd.20 days ago
Remote, PolandSenior
Responsibilities
- Design robust API contracts and facilitate onboarding for external partners.
- Write developer documentation and create mock environments for partner integrations.
- Build modern frontend interfaces including checkout paths, landing pages, and discovery hubs.
- Bridge Java backend architecture with frontend development for cohesive end-to-end implementations.
- Define coding standards, lead technical discussions, and act as the architectural anchor for integrations.
- Support the Incident Response service.
Requirements
- Deep hands-on experience with Java and Kotlin.
- Strong experience designing, building, and scaling RESTful APIs using API-first design, OpenAPI, and Swagger.
- Proficiency in modern JavaScript or TypeScript and a modern frontend framework, preferably React.
- Understanding of distributed systems, integration patterns, OAuth 2.0, and OpenID Connect.
- Ability to design API contracts for external B2B partners and lead technical discussions.
- English proficiency at a minimum B2+ level.
Benefits
- 20–26k PLN on a B2B contract.
- Access to the Worksmile platform.
- A collaborative work environment focused on growth and innovation.
- Recruitment process includes a recruiter screen, technical verification meetings, stakeholder meeting, and offer.