Staff Software Engineer

Brussels, Brussels Capital

At Moody's, we unite the brightest minds to turn todays risks into tomorrows opportunities. We do this by striving to create an inclusive environment where everyone feels welcome to be who they arewith the freedom to exchange ideas, think innovatively, and listen to each other and customers in meaningful ways. Moodys is transforming how the world sees risk. As a global leader in ratings and integrated risk assessment, were advancing AI to move from insight to actionenabling intelligence that not only understands complexity but responds to it. We decode risk to unlock opportunity, helping our clients navigate uncertainty with clarity, speed, and confidence.

If you are excited about this opportunity but do not meet every single requirement, please apply! You still may be a great fit for this role or other open roles. We are seeking candidates who model our values: invest in every relationship, lead with curiosity, champion diverse perspectives, turn inputs into actions, and uphold trust through integrity. 

Skills and Competencies

• Must have
  • You've set technical direction for teams, influenced org-wide standards, and solved novel problems at scale
  • Proven experience shipping production software (minimum 7 years, end-to-end feature ownership).
  • Strong proficiency in TypeScript for both frontend and backend development.
  • Experience building responsive web applications using modern React patterns.
  • Comfortable working across the stack: UI components, API design, and database queries.
  • Knowledge of serverless architectures (AWS Lambda, ECS, or equivalent).
  • Comfortable collaborating in a cross-functional environment.
  • Curiosity about emerging technologies (AI, infrastructure, developer tools).
  • Strong problem-solving mindset; ability to turn vague requirements into working solutions.
  • Exposure to search platforms (OpenSearch, Elasticsearch) or ETL pipelines.
  • Familiarity with AWS services or equivalent cloud platforms.
  • Experience with SQL (Postgres) and NoSQL (DynamoDB, DocumentDB) databases.
  • Experience building .net framework asp.net websites.
• Good to have
  • Ability to evaluate trade-offs between data models and query patterns.
  • Exposure to search platforms (OpenSearch, Elasticsearch) or ETL pipelines.
  • Familiarity with CI/CD practices and tools (Git, Docker, Jira; Terraform is a plus).
  • Understanding of event-driven systems, asynchronous processing, and distributed architectures.
  • Experience with serverless architectures (Lambda, ECS, or equivalent)

Responsibilities

• Design and implement scalable serverless solutions leveraging AWS Lambda, ECS, and event-driven architectures to handle unpredictable traffic spikes without performance degradation.
• Influence cross-team architecture and standards across 40+ squads, balancing autonomy with platform consistency and managing complex dependencies.
• Own the full development lifecyclefrom ideation and design through implementation, testing, deployment, and monitoring in production.
• Solve ambiguous and complex problems, including unclear requirements, evolving business needs, and production incidentsgoing beyond ticket-based work to define what needs to be built.
• Collaborate extensively with product managers, designers, data engineers, and other developers to align on technical and business solutions.
• Ensure high-quality code and maintainability through best practices in testing, code reviews, and continuous integration/deployment.
• Contribute to architectural decisions that optimize for scalability, reliability, and cost efficiency in a cloud-native environment.
• You've set technical direction for teams, influenced org-wide standards, and solved novel problems at scale Deliver full-stack features across a modern TypeScript ecosystem (React + Module Federation frontend, NodeJS serverless backend) serving millions of users making critical financial decisions.
• Champion performance and security standards, ensuring robust solutions for sensitive financial data.
• Stay proactive in knowledge sharing, mentoring peers, and contributing to documentation and internal tooling improvements.
• Adapt quickly to changing priorities, new technologies, and evolving business requirements in a fast-paced environment.

About the team

You'll build the technology infrastructure that powers financial decision-making for banks, lenders, and institutional investors worldwide. Moody's Analytics provides decision intelligence to clients managing trillions in assets. When our platforms go down, clients lose money. When our GenAI products deliver bad outputs, trust erodes. Your code has real consequences.

We're the innovation engine of a 100+ year-old company. Legacy brand, startup energy. That means cutting-edge technology (40 squads, 8 dedicated GenAI teams) backed by the resources and domain expertise to do it right. You'll have the autonomy of a startup (40 squads moving fast) with the distribution of an enterprise (your work immediately reaches clients managing trillions).

If you want to work on hard problems at scale, with actual impact, this is it.

Moodys is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected veteran status, sexual orientation, gender expression, gender identity or any other characteristic protected by law.

Candidates for Moody's Corporation may be asked to disclose securities holdings pursuant to Moodys Policy for Securities Trading and the requirements of the position. Employment is contingent upon compliance with the Policy, including remediation of positions in those holdings as necessary.