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Backend Developer Senior (Kotlin | Spring Boot | AWS)

Madrid, ES🌐 Remote💼 Full-time🗓 2026-08-24 → 2026-09-11

Core

Senior Backend Developer building and evolving a high-demand international online vehicle sales platform using cloud-native architectures.

Role type

Senior IC Backend Developer

Builds

Scalable backend services, event-driven pipelines, and third-party integrations for a global vehicle marketplace.

Domain

Automotive e-commerce, Cloud Infrastructure

Deliverable

production ML models | product features

Required skills

Kotlin, Spring Boot, AWS, Hexagonal Architecture, Event Driven Architecture, Domain Driven Design, REST APIs, Microservices, CI/CD, TDD/BDD

Preferred skills

Business requirement analysis, Pragmatic decision making, Autonomous work in agile environments, Multidisciplinary collaboration

Technologies

Kotlin, Spring Boot, AWS, Hexagonal Architecture, Event Driven Architecture, Domain Driven Design, REST APIs, Microservices, CI/CD, TDD, BDD

Responsibilities

Design and develop new backend functionalities, Implement audit, traceability, and security solutions, Evolve event-based publishing pipelines, Develop third-party API integrations, Optimize service performance and response times, Manage users and role-based authorization (RBAC), Adapt functionality for multi-language and multi-market environments, Continuously improve technical quality and product architecture

Seniority

Senior, hands-on IC

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