Backend Engineer (Typescript) (50K€-65K€)

Joppy; Barcelona; On-site; EUR 50,000 - 65,000; Full time

Job summary

A technology recruitment platform is seeking a Backend Engineer to own backend systems for a crypto and self-custody platform. This role involves designing, implementing, and operating scalable backend services using Go and TypeScript, while ensuring high code quality and performance. Candidates should have experience with Kubernetes and messaging architectures like RabbitMQ. The position offers a full-time contract within a dynamic tech environment located in Barcelona.

Qualifications

• 3+ years of backend experience building production systems in Go or TypeScript.
• Proven track record designing message-driven architectures with RabbitMQ or Kafka.
• Strong knowledge of Kubernetes: deploying, scaling, and troubleshooting.

Responsibilities

• Design, implement, and operate scalable backend services handling millions of API requests.
• Author high-performance microservices in Go and TypeScript, ensuring clean code.
• Architect messaging workflows using RabbitMQ, optimizing for throughput and fault tolerance.

Skills

Go

TypeScript

RabbitMQ

Kubernetes

Cryptography

Tools

Terraform

Prometheus

Grafana

OpenTelemetry

Job description

Join to apply for the Backend Engineer (Typescript) (50K€-65K€) role at Joppy

We’re hiring a Backend Engineer for our client — someone who’ll own the backend systems that power our crypto and self‑custody platform. You’ll bring deep expertise in Go, TypeScript, RabbitMQ, and Kubernetes, paired with a passion for distributed systems, cryptography, and fintech.

What you’ll do

• Design, implement, and operate scalable, resilient backend services handling millions of API requests per month.
• Author high‑performance microservices in Go and TypeScript, ensuring clean, maintainable code and robust test coverage.
• Architect messaging workflows using RabbitMQ (or similar), optimizing for throughput, latency, and fault tolerance.

Your profile

• 3+ years of backend experience building production systems in Go or TypeScript.
• Proven track record designing message‑driven architectures with RabbitMQ, Kafka, or similar.
• Strong knowledge of Kubernetes: deploying, scaling, and troubleshooting at scale.
• Familiarity with cryptographic concepts (key management, signatures, encryption) and a curiosity to dig deeper.
• You’re an individual contributor who loves solving hard problems, writing code end‑to‑end, and shipping reliable services.

Nice to haves

• Background in Rust, or systems programming.
• Experience with Infrastructure as Code (Terraform, Cloud Deployment Manager).
• Open‑source contributions or side projects showcasing your distributed systems chops.
• Familiarity with observability tools (Prometheus, Grafana, OpenTelemetry).

Hiring Process

• Culture fit
• Technical challenge (4h)
• Technical interview
• Reference calls

About Joppy

Joppy is a technology recruitment platform built for developers by developers.

✅ No CV is required. Just say what you know and what you want.

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Seniority level

Associate

Employment type

Full-time

Job function

Business Development

Industries

Technology, Information and Internet

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