Senior Node.js/TypeScript Engineer for Real-Time FinTech

OANDA; Kraków; On-site; PLN 240,000 - 360,000; Full time

Job summary

OANDA is seeking a Senior Software Engineer to build scalable, low-latency TypeScript/Node.js microservices powering our next-generation Trading Platform. You will work on real-time financial APIs—from price streaming to order execution—on Google Cloud Platform.

You will join an agile, global team developing a cloud-native trading API layer and contribute to architectural decisions while owning feature development end-to-end.

Qualifications

• Production experience with Node.js microservices (Node 18+, ideally Node 22).
• Experience designing and operating real-time or event-driven systems (Kafka, Redis, SSE, WebSockets).
• Familiarity with CI/CD pipelines and automated release workflows.

Responsibilities

• Design and implement low-latency, high-availability APIs using Node.js 22, TypeScript, Koa, and GCP.
• Work with real-time data pipelines built on Kafka, Redis, ZeroMQ, and SSE streaming.
• Write reusable, testable code across a TypeScript monorepo with Lerna.
• Monitor and improve service performance using Prometheus metrics and Grafana dashboards.
• Lead initiatives and contribute to architectural decisions.
• Share knowledge and review colleagues' code to raise engineering quality.
• Contribute to all stages of the software development lifecycle.

Skills

Node.js

TypeScript

Koa

Real-time systems

CI/CD

Monorepo

SQL

Tools

Kafka

Redis

ZeroMQ

SSE

GCP

GKE

Cloud Run

Artifact Registry

Prometheus

Grafana

OpenAPI

Job description

OANDA is seeking a Senior Software Engineer to build scalable, low-latency TypeScript/Node.js microservices powering our next-generation Trading Platform. You will work on real-time financial APIs—from price streaming to order execution—on Google Cloud Platform.

You will join an agile, global team developing a cloud-native trading API layer and contribute to architectural decisions while owning feature development end-to-end.