Senior Backend Engineer, Wallets & Payments (Remote)

Jobgether; Spagna; Ibrido; EUR 90.000 - 140.000; Tempo pieno

Vantaggi offerti da questo lavoro

Competitive compensation

Hybrid and remote options

Flexible holidays

International exposure

Professional growth

Creative and collaborative culture

Meaningful technical impact

Descrizione del lavoro

Ledger in Spain seeks a Senior Backend Software Engineer (Wallets) to own and evolve the wallet infrastructure supporting fiat and cryptocurrency operations. You will design and implement services for the complete wallet lifecycle, and collaborate with multiple domains across Digital Assets, Fiat, and Onboarding.

You will work in a distributed, international team, owning technical decisions and contributing to scalable, reliable systems.

Competenze

• 5+ years backend engineering with Java or Kotlin and Spring Boot.
• Strong distributed systems experience and microservices with event-driven patterns.
• Relational DBs (MySQL/PostgreSQL) and Redis expertise.
• Wallet/account/financial domain experience preferred.
• DDD and hexagonal architecture knowledge for bounded contexts.
• RESTful API design with backward compatibility and good DX.
• Production observability and on-call responsibilities.
• CI/CD and infrastructure-as-code practices are familiar.

Mansioni

• Design, develop, and maintain wallet infrastructure for fiat and crypto.
• Own wallet lifecycle services: creation, activation, blocking, suspension, termination.
• Collaborate across Digital Assets, Fiat, Onboarding, Billing, and other domains.
• Build scalable, hexagonal architecture-based services with good performance.
• Maintain production reliability with monitoring, incident response, and on-call.
• Ensure code quality with tests and clear documentation; participate in design reviews.
• Drive continuous improvement in system performance and developer experience.

Conoscenze

Java/Kotlin

Spring Boot

Distributed systems

Event-driven architecture

Kafka/AWS SQS

Relational databases (MySQL/PostgreSQL

Redis

DDD & Hexagonal

RESTful APIs

Observability (Grafana/Prometheus/Micr

CI/CD & IaC

On-call ownership

Strumenti

Grafana

Prometheus

Micrometer

Descrizione del lavoro

Ledger in Spain seeks a Senior Backend Software Engineer (Wallets) to own and evolve the wallet infrastructure supporting fiat and cryptocurrency operations. You will design and implement services for the complete wallet lifecycle, and collaborate with multiple domains across Digital Assets, Fiat, and Onboarding.

You will work in a distributed, international team, owning technical decisions and contributing to scalable, reliable systems.