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

OANDA Corporation; Kraków; Hybrid; PLN 180,000 - 260,000; Full time

Job summary

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

You’ll join a highly agile, multi-country team owning a microservices suite forming the Universal Platform. This contract role emphasizes architectural input and end-to-end delivery with a strong emphasis on quality and

Qualifications

• Production experience with Node.js microservices (Node 18+, ideally Node 22).
• Strong TypeScript skills.
• Experience designing and operating real‑time or event‑driven systems (Kafka, Redis, SSE, WebSockets, or similar).
• Practical experience with metrics, monitoring, and observability (Prometheus, Grafana, or equivalent).
• Experience with GCP or another major cloud platform (GKE, Cloud Run, Artifact Registry).
• Familiarity with CI/CD pipelines and automated release workflows (semantic-release, CircleCI, or equivalent).
• Comfortable working in a monorepo with shared internal packages and versioned integrations.
• Practical knowledge of relational databases and SQL (querying, schema design, indexing).

Responsibilities

• Design and implement low-latency, high-availability APIs using Node.js 22, TypeScript, Koa, and GCP (GKE, Cloud Run, Artifact Registry).
• Work with real-time data pipelines built on Kafka, Redis, ZeroMQ, and SSE streaming.
• Write reusable, testable, and maintainable code across a TypeScript monorepo with Lerna.
• Monitor and improve service performance using Prometheus metrics and Grafana dashboards.
• Lead PoC efforts for candidate architectures and contribute to architectural decisions.
• Share knowledge, review colleagues' code, and raise the bar for engineering quality across the team.
• Contribute to all stages of the software development lifecycle.
• Onboard, understand our microservices architecture, and deploy your first code to production within your first month.
• Take full ownership of feature development, contribute to architectural improvements, and drive cross-team technical initiatives.

Skills

Node.js

TypeScript

Real-time systems

Cloud platforms

Monorepo/Lerna

CI/CD

GCP

Tools

Koa

GKE

Cloud Run

Artifact Registry

Kafka

Redis

ZeroMQ

SSE

Job description

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

You’ll join a highly agile, multi-country team owning a microservices suite forming the Universal Platform. This contract role emphasizes architectural input and end-to-end delivery with a strong emphasis on quality and