Senior Software Engineer - Full Stack and Python

At Moody's, we unite the brightest minds to turn today’s risks into tomorrow’s opportunities. We do this by striving to create an inclusive environment where everyone feels welcome to be who they are—with the freedom to exchange ideas, think innovatively, and listen to each other and customers in meaningful ways. Moody’s is transforming how the world sees risk. As a global leader in ratings and integrated risk assessment, we’re advancing AI to move from insight to action—enabling 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

6+ years of full stack experience with Python and frameworks such as Django, FastAPI, or Flask and React, JavaScript, HTML, and CSS

Proven experience in developing containerised or serverless applications on AWS and Azure; familiarity with creating and maintaining CI/CD pipelines is a plus

Proficient in working with both SQL and NoSQL databases

Basic understanding of artificial intelligence concepts, with curiosity and enthusiasm for learning how AI tools can be used to improve processes and drive efficiency

Interest in exploring AI systems and a willingness to develop awareness of responsible AI practices, including risk management and ethical use

Hands-on experience with testing frameworks (unittest, Pytest, Jest, Cypress) and API testing tools like Postman

Knowledge of MS Teams app development (tabs, bots, extensions) is an advantage

Strong experience with Git and managing Docker images and containers

Solid understanding of system architecture, secure coding practices, authentication, authorization, and encryption

Comfortable working in Unix-like environments

Excellent problem-solving and debugging abilities, attention to detail, strong communication and teamwork skills, and ability to thrive in a fast-paced environment while meeting deadlines

Education

Master’s or Bachelor’s degree in Computer Science, Software Engineering, or a related field

Responsibilities

We are seeking an accomplished Senior Software Engineer to join our dynamic team. The ideal candidate will bring deep expertise in backend development using Python frameworks and frontend development with React. This role involves driving technical excellence and collaborating closely with developers, designers, and product managers to architect, deliver, and optimise scalable, innovative solutions that drive business impact while continuously enhancing existing systems

Design, develop, and maintain robust backend and frontend solutions using Python, React, JavaScript, HTML, CSS, and modern web frameworks

Architect and implement cloud-native applications on AWS and Azure, ensuring scalability, reliability, and cost efficiency

Build and maintain apps on collaborative platforms such as MS Teams

Contribute to the design and development of AI-driven solutions to enhance product capabilities

Collaborate with designers and product managers to deliver responsive, user-friendly interfaces aligned with business requirements

Write secure, performant, reusable, testable, and efficient code following industry best practices

Lead and participate in code reviews to uphold quality standards and mentor junior developers

Provide technical guidance and mentorship to junior team members

Design, enhance, and test REST APIs and application integrations for seamless interoperability

Debug and troubleshoot complex issues across the full stack, ensuring timely resolution

Contribute to CI/CD pipeline improvements and DevOps practices for streamlined deployments

Ensure compliance with security standards, authentication, authorisation, and data protection guidelines

Document technical designs, workflows, and APIs for maintainability and knowledge sharing

Ensure applications are optimised for performance, scalability, and maintainability

Collaborate with stakeholders to translate business requirements into technical solutions

Stay current with emerging technologies, frameworks, and tools, and advocate for their adoption where beneficial

Engage in team meetings, sprint planning, and cross-functional discussions to align technical solutions with strategic goals

About the team

The Corporate Systems team, part of the Technology Services Group, supports Moody’s core business and technology operations by enabling reliable day to day execution, strong coordination, and effective governance across corporate platforms and shared services. The team partners closely with senior leaders, product teams, and key stakeholders across the enterprise to drive operational excellence while also advancing innovation, including the adoption and enablement of AI driven capabilities. By bringing structure, clarity, and rigor to complex environments, Corporate Systems team members contribute to high impact work that improves how technology is delivered, operated, and evolved across the organization—helping ensure Moody’s systems are resilient, forward looking, and positioned for continued growth.

Candidates for Moody's Corporation may be asked to disclose securities holdings pursuant to Moody’s 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.