Senior Full-Stack Engineer: Node.js/React, Cloud-Native

PassFort; Brussel Hoofdstad; On-site; EUR 70,000 - 110,000; Full time

Job summary

Moody’s is seeking a Senior Full Stack Software Engineer to join our Brussels-based team. You will work across backend (Node.js) and frontend (React), designing scalable APIs and AI-enabled workflows within cloud-native, serverless architectures.

You will own the SDLC end-to-end, collaborate with product and engineering peers, and contribute to architecture decisions that optimize performance, security, and cost. A strong emphasis on modern practices and responsible AI is expected.

Qualifications

• Demonstrated experience delivering production-grade software in complex environments.
• Strong backend with Node.js and scalable API design.
• Full-stack capabilities using TypeScript/JavaScript and React.
• Experience with cloud-native/serverless architectures and AWS.
• Familiarity with SQL and NoSQL databases and performance considerations.
• Ability to translate ambiguous requirements into scalable solutions.

Responsibilities

• Design and deliver scalable cloud-native software for financial data platforms.
• Develop serverless and event-driven architectures and ensure reliability.
• Own full SDLC from design to monitoring and iteration.
• Collaborate with product managers, designers, and engineers to meet business goals.
• Address complex technical challenges and define solution approaches.
• Contribute to system architecture decisions for scalability and cost efficiency.
• Uphold code quality, testing, reviews, and security standards.
• Share knowledge and mentor engineers across teams.

Skills

Node.js backend

React frontend

TypeScript/JavaScript

API design

Cloud-native architectures

CI/CD & testing

Databases (SQL/NoSQL)

Cross-functional collaboration

AI concepts usage

Education

Undergraduate degree in Computer Science or related field

Tools

AWS

Job description

Moody’s is seeking a Senior Full Stack Software Engineer to join our Brussels-based team. You will work across backend (Node.js) and frontend (React), designing scalable APIs and AI-enabled workflows within cloud-native, serverless architectures.

You will own the SDLC end-to-end, collaborate with product and engineering peers, and contribute to architecture decisions that optimize performance, security, and cost. A strong emphasis on modern practices and responsible AI is expected.