Senior Software Engineer - .NET
We are seeking a Senior Software Engineer 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 a Senior Software Engineer at Marsh, you will be responsible for the design, development, implementation, and support of performant, highly scalable software solutions. This is a hands-on role that requires the candidate to work collaboratively in a squad following a Scaled Agile development methodology.
We will count on you to:
- Ensure that solution requirements are gathered accurately, understood, and that all stakeholders have transparency on impacts
- Hands-on; write code, peer review and test alongside your teams
- Champion good agile practices that are foundational to product delivery
- Be an active member of the MMC Technology community – contribute, collaborate, and learn
- Build strong relationships with product owners, solutions architects, analysts and pod leadership
- Work with state-of-the-art technologies to solve genuine, real-world problems
- Troubleshoot and resolved development issues
- Recommend and execute code improvements based on current solutions
What you need to have:
- BSc or MSc Computer Science, Software Engineer or related field, or related experience
- The ability to communicate effectively to both technical and non-technical colleagues in a cross-functional environment
- 6+ years of hands-on experience in .Net Development.
- Extensive experience of development technologies including .NET MVC, C#, Entity Framework, .NET Core, SQL Server, Web API, JavaScript, jQuery and JSON.
- Experience working with REST APIs
- Experience with CI/CD pipelines and infrastructure as code, specifically using Azure DevOps or GitHub.
- Problem-solving skills and the ability to troubleshoot complex issues.
- Excellent communication skills in English is a Must (C1 level).
What makes you stand out:
- Identify application security requirements and brainstorm solutions factoring in industry best practices
- Assess the tooling and remediation of threats and vulnerabilities within our software/applications, and the hosting environment
Why join our team:
- Experience designing and deploying applications on Sitecore CMS platform
- Experience designing and programming with LLM and RAG AI framework such as OpenAI, Gemini
- Experience with container technologies such as Docker and Kubernetes.
Similar Jobs
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.





