Senior FullStack Developer
Marsh McLennanMexico City, Mexico City, Mexico
Posted March 6, 2026
Full Time
About the Company
Marsh McLennan (NYSE: MMC) is a global leader in risk, strategy and people, advising clients in 130 countries across four businesses: Marsh, Guy Carpenter, Mercer and Oliver Wyman. With annual revenue of $23 billion and more than 85,000 colleagues, Marsh McLennan helps build the confidence to thrive through the power of perspective. Follow us on X at @MarshMcLennan.
Job Description
We are seeking a Senior FullStack Developer to join our team at Marsh. This role will be based in Mexico City and requires a hybrid work arrangement, with at least three days a week in the office. As a Senior Fullstack Developer at Marsh, you will play a key role in evolving solutions from early proof of concept through scalable, production-ready systems used by internal stakeholders.
Requirements
- 6+ years of professional software engineering experience
- 2+ years of hands-on experience working with Large Language Models (LLMs)
- Strong proficiency in a modern frontend framework
- Deep hands-on experience with NodeJS / NestJS and/or Python
- Strong understanding of API design, distributed systems, and service-oriented architectures
- Proven experience deploying, operating, and supporting systems in cloud environments
- Experience working in Agile delivery teams and collaborating across disciplines
- Strong communication skills
- Advanced Level of English
Benefits
- Professional development opportunities
- Interesting work
- Supportive leaders
- Vibrant and inclusive culture
- Career opportunities
- Benefits and rewards