Applications Developer
We are seeking an Applications Developer to join our team at Marsh. This role will be based in Mexico City. This is a hybrid role that has a requirement of working at least three days a week in the office. As an Applications Developer at Marsh, this role involves maintaining, enhancing, and supporting existing applications to ensure optimal performance, reliability, and scalability.
We will count on you to:
Maintain and enhance existing applications built on the MEAN stack (MongoDB, Express.js, Angular, Node.js).
Develop and maintain back-end services and APIs using Python and Node.js.
Manage and optimize Postgres databases, including writing efficient queries and ensuring data integrity.
Collaborate with cross-functional teams including QA, DevOps, and front-end developers to deliver high-quality solutions.
Document application changes, processes, and procedures.
Monitor application performance and implement improvements as needed.
Stay updated with emerging technologies and best practices relevant to application maintenance and development.
What you need to have:
+5 years of proven experience with the MEAN stack (MongoDB, Express.js, Angular, Node.js) or MERN stack (MongoDB, Express.js, React, Node.js).
Strong proficiency in Python programming for back-end development.
Experience with Postgres database design, development, and optimization.
Solid understanding of RESTful API design and development.
Familiarity with version control systems such as Git.
Strong problem-solving skills and attention to detail.
Bachelor’s degree in computer science, Information Technology, or a related field, or equivalent work experience.
Advanced Level of English is a Must
What makes you stand out:
Experience with containerization technologies such as Docker.
Knowledge of cloud platforms (AWS, Azure, or GCP).
Why join our team:
We help you be your best through professional development opportunities, interesting work and supportive leaders.
We foster a vibrant and inclusive culture where you can work with talented colleagues to create new solutions and have impact for colleagues, clients and communities.
Our scale enables us to provide a range of career opportunities, as well as benefits and rewards to enhance your well-being.
Skills Required
- More than 5 years of experience with the MEAN or MERN stack
- Strong proficiency in Python for back-end development
- Experience with PostgreSQL database design, development, and optimization
- Solid understanding of RESTful API design and development
- Familiarity with Git or another version control system
- Strong problem-solving skills and attention to detail
- Bachelor's degree in computer science, information technology, or a related field, or equivalent work experience
- Advanced level of English
- Experience with Docker or other containerization technologies
- Knowledge of AWS, Azure, or GCP
Marsh McLennan Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Marsh McLennan and has not been reviewed or approved by Marsh McLennan.
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Leave & Time Off Breadth — Leave offerings are described as generous, including sizable PTO, paid holidays, paid sick days, and additional time off such as paid volunteer time and “Summer days.” These time-off benefits are portrayed as a standout part of the overall rewards package.
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Healthcare Strength — Healthcare coverage is characterized as comprehensive, spanning medical, dental, and vision options, with additional supports like disability and life insurance and access to mental health resources and an EAP. The breadth of plan options is positioned as a core strength of the benefits package.
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Retirement Support — Retirement benefits are framed as solid, with 401(k) programs and employer matching frequently highlighted alongside other financial programs. Stock purchase options are also referenced as an additional wealth-building component of the total rewards mix.
Marsh McLennan Insights
What We Do
Marsh McLennan (NYSE: MMC) brings together nearly 78,000 experts in risk, strategy, and people across Marsh, Guy Carpenter, Mercer, and Oliver Wyman, serving clients in over 130 countries. Marsh enables enterprise worldwide by helping clients manage risks, transforming uncertainty into opportunity. Guy Carpenter helps clients grow profitably with reinsurance broking expertise, advisory services, and advanced analytics. Mercer helps organizations advance the health, wealth, and careers of their most vital asset — their people. Oliver Wyman’s expertise in strategy, operations, risk, and organization transformation changes what is possible for our clients, their industries, and society. Together, we combine a unique range of capabilities to help our clients solve problems, seize opportunities, and build lasting success in increasingly complex operating environments.









