Roles & Responsibilities

4+ years of professional software development experience at mid to senior level.
Strong TypeScript proficiency with either Node.js for backend services or React for frontend applications.
Experience designing and scaling distributed systems and working with event-driven architectures (Kafka, RabbitMQ) and cloud platforms (AWS or GCP).
Experience in payments, fintech, or high-volume transaction systems and comfortable integrating with external payment providers.

Requirements:

Build and maintain high-throughput payments infrastructure, including provider and banking-rail integrations.
Design and evolve distributed systems and event-driven messaging on AWS or GCP.
Collaborate with backend/frontend teams to implement robust payment flows, APIs, and real-time UX considerations.
Own features end-to-end in a fast-moving, remote, async environment with a strong emphasis on reliability and scale.

Job description

ABOUT THE OPPORTUNITY

Work on the payments infrastructure of one of the world's leading cryptocurrency exchanges — a platform operating at massive scale, processing millions of transactions across global banking rails and crypto networks. This is not a greenfield project: it's a live, high-throughput payments domain where engineering decisions have immediate, measurable impact.

2 open positions — one leaning Backend, one leaning Frontend — both embedded in the same Payments team. Fully remote, Portugal.

PROJECT & CONTEXT

You'll be joining the Payments domain team, focused on integrations with payment providers and banking rails, optimising deposit and withdrawal flows, and improving the reliability, scalability, and performance of core payment infrastructure.

The work spans integrations with external providers, internal optimisations, and growth initiatives — in an environment where uptime, latency, and correctness are non-negotiable. The backend runs on Node.js / TypeScript with event-driven architectures, Kafka or RabbitMQ for messaging, and cloud infrastructure on AWS or GCP. The frontend is built with React + TypeScript, tightly integrated with payment APIs and backend services.

This team is growing — more positions are expected before summer, so this is a good moment to get in early.

WHAT WE'RE LOOKING FOR (Required)

For the Backend role:

Mid to Senior level — 4+ years of professional backend development
Strong Node.js + TypeScript — production-grade API and service development
Experience designing and scaling distributed systems
Hands-on with event-driven architectures and messaging systems (Kafka, RabbitMQ, or equivalent)
Cloud infrastructure experience: AWS or GCP
Experience in payments, fintech, or high-volume transaction systems is a strong differentiator
Comfortable working with external payment provider integrations (banking APIs, card rails, or crypto infrastructure)

For the Frontend role:

Mid to Senior level — 4+ years of professional frontend development
Strong React + TypeScript — scalable, production web applications
Experience building payment flows or financial interfaces — forms, validation, real-time state, error handling
Comfortable working closely with backend APIs and understanding the payment domain end-to-end
Attention to reliability and UX precision in high-stakes financial interactions

Both roles:

English B2+ — fully remote team, async communication is the norm
Strong sense of ownership — you drive things to completion without hand-holding
Comfortable operating in a fast-moving, high-scale product environment

NICE TO HAVE (Preferred)

Prior experience in crypto, blockchain, or digital assets infrastructure
Familiarity with banking rails (SEPA, SWIFT, open banking protocols)
Exposure to compliance and regulatory requirements in payments (PCI-DSS, AML flows)
Experience with microservices architecture at scale
Background in observability tooling — monitoring, alerting, tracing in distributed payment systems
Full-stack profile comfortable crossing the backend/frontend boundary when needed