Senior Backend Engineer: Wallets & Crypto Payments Remote

Jobgether; Switzerland; Hybrid; CHF 150,000 - 210,000; Full time

Benefits offered by this job

Competitive compensation

Hybrid and remote options

Flexible holidays

International exposure

Professional growth

Creative and collaborative culture

Meaningful technical impact

Job summary

Ledger – Wallets in Switzerland seeks a Senior Backend Software Engineer to own wallet infrastructure and build scalable services for fiat and crypto wallets. You will work in a distributed, security‑driven environment with on‑call responsibilities and production ownership.

Responsibilities include wallet lifecycle services, cross-domain integrations, and evolving hexagonal architecture with Kafka/SQS, MySQL/PostgreSQL, Redis, and observability tooling. Collaborative, international team.

Qualifications

• At least 5 years of professional backend engineering experience with Java or Kotlin and Spring Boot.

Responsibilities

• Design, develop, and maintain wallet infrastructure for fiat and crypto wallets.
• Collaborate across Digital Assets, Fiat, Onboarding, Billing, and other domains.
• Build horizontally scalable services using hexagonal architecture patterns and DLQ/HPA concepts.
• Take technical ownership of wallet-related services and ensure reliability and security.
• Participate in on-call rotations, production monitoring, and incident response.
• Write well-tested, maintainable code and clear documentation.
• Contribute to architecture reviews and design proposals.
• Identify opportunities to improve system performance and development workflows.

Skills

Java or Kotlin

Spring Boot

Distributed systems

REST APIs

DDD and hexagonal architecture

On-call ownership

Communication and collaboration

Tools

Kafka

AWS SQS

MySQL

PostgreSQL

Redis

Grafana

Prometheus

Micrometer

Kubernetes

Job description

Ledger – Wallets in Switzerland seeks a Senior Backend Software Engineer to own wallet infrastructure and build scalable services for fiat and crypto wallets. You will work in a distributed, security‑driven environment with on‑call responsibilities and production ownership.

Responsibilities include wallet lifecycle services, cross-domain integrations, and evolving hexagonal architecture with Kafka/SQS, MySQL/PostgreSQL, Redis, and observability tooling. Collaborative, international team.