# Oliver Wyman - Senior Applications Developer  - Mexico City at Marsh McLennan

Marsh McLennan is hiring an Oliver Wyman - Senior Applications Developer  - Mexico City (Mexico). Level rates it Works on AI ●●●○; you can [apply on Level](https://jobsbylevel.com/go/aad9f097-e4b4-4ca8-a030-94579ba1ca2e).

AI Level 3, AI centrality 66 out of 100. Mexico City - Paseo.

## Details

- Company: [Marsh McLennan](https://jobsbylevel.com/companies/marsh-mclennan)
- AI level: AI Level 3 (score 66 out of 100)
- Location: Mexico City - Paseo
- Posted: October 9, 2026
- Apply: https://jobsbylevel.com/go/aad9f097-e4b4-4ca8-a030-94579ba1ca2e

## Description

Company: Oliver Wyman Description: Job Overview: The Senior Applications Developer is a senior technical contributor responsible for designing, developing, and delivering modern enterprise applications that simplify business processes, improve user experiences, and increase operational efficiency. The role combines strong full-stack application development using the MERN stack — MongoDB, Express.js, React, and Node.js — with workflow engineering, API and system integration, cloud technologies, and emerging agentic AI capabilities . The ideal candidate is an experienced software engineer who can translate complex business requirements into intuitive, scalable, secure, and maintainable applications. This individual will own solutions across the application lifecycle—from architecture and user experience through business logic, workflow orchestration, integrations, data, deployment, monitoring, and continuous improvement. A key focus of the role will be designing applications that orchestrate work across users, systems, data, APIs, automation, and increasingly AI agents and intelligent services . The Senior Applications Developer will help establish patterns for incorporating generative AI and agentic technologies into enterprise applications where they deliver measurable business value. Key Responsibilities Lead the design and development of enterprise-grade applications from concept through production, supporting business, analytics, automation, and data-driven use cases. Design, build, and maintain full-stack applications using the MERN stack: MongoDB, Express.js, React, Node.js, JavaScript, and TypeScript . Develop modern, responsive, accessible, and high-performing user experiences using React and contemporary front-end development patterns. Design application architecture spanning user interfaces, business logic, workflows, APIs, integrations, data services, cloud components, and AI-enabled capabilities . Design and implement application workflows that coordinate activities across users, business rules, approvals, APIs, data, automated processes, and external systems. Build secure, reusable, and well-documented REST APIs, microservices, webhooks, and integration services using Node.js/Express and, where appropriate, Python/FastAPI. Design applications for performance, scalability, reliability, resiliency, maintainability, and operational efficiency , identifying bottlenecks and continuously optimizing application performance. Work with SQL and NoSQL databases , including MongoDB and enterprise data platforms, designing effective schemas, queries, data access patterns, and integrations. Develop event-driven and asynchronous application capabilities where appropriate using queues, messaging, background processing, and resilient integration patterns. Evaluate opportunities to incorporate generative AI, intelligent agents, and agentic workflows into applications and business processes. Determine the appropriate technical approach for a business problem across custom application development, APIs, automation, workflow technologies, cloud services, data platforms, and AI/agentic technologies rather than defaulting to a single technology. Troubleshoot complex production issues across application, integration, workflow, data, and infrastructure layers. Contribute to architectural decisions and establish reusable components, development standards, application patterns, and engineering best practices . Conduct code reviews, provide technical guidance, and mentor developers to improve engineering quality and consistency. Partner closely with product owners, analysts, designers, business stakeholders, data teams, and technology teams to translate business needs into scalable technical solutions. Ensure applications comply with enterprise requirements for security, privacy, resiliency, testing, documentation, governance, and production support . Basic Qualifications Bachelor’s degree in Computer Science, Software Engineering,

The description is cut here. Read the full offer: https://jobsbylevel.com/jobs/oliver-wyman-senior-applications-developer-mexico-city-at-marsh-mclennan-05c167

Source: https://jobsbylevel.com/jobs/oliver-wyman-senior-applications-developer-mexico-city-at-marsh-mclennan-05c167

## Cite this page

Level. https://jobsbylevel.com/jobs/oliver-wyman-senior-applications-developer-mexico-city-at-marsh-mclennan-05c167.

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