Company:

Marsh Corporate

Description:

We are seeking a talented individual to join our Applications Development team at Marsh. This role will be based in México city. This is a hybrid role that has a requirement of working at least three days a week in the office.

We will count on you to:

• Design, implement, and maintain desktop applications and VSTO add-ins using clean code principles (SOLID, dependency injection, layered architecture). Apply best practices for Office object model automation and COM interoperability.
• Write unit and integration tests for desktop and Office solutions. Engage in thorough code reviews and maintain comprehensive technical documentation for Office add-ins and desktop apps.
• Security & reliability: Follow identity and access best practices; logging and metrics; assist in incident resolution.
• DevOps: Contribute to CI/CD pipelines (build, test, deploy) and environment configuration.
• Collaboration: Work with product owners, QA, and UX, fellow engineers and stakeholders to refine requirements and deliver features.
• The work is 100% hands on development or implementation.

What you need to have:

• Bachelors degree in computer science, Information Technology, or a related field.
• 3-5 years of experience in .NET development (ASP.NET Core, REST APIs, Desktop Applications).
• Experience with development of VSTO add-ins/extensions (Word, PowerPoint, Excel) and knowledge of Office.js
• Proficiency with Git/GitHub, Mongo DB.
• Familiarity with front-end technologies (HTML/CSS/JavaScript) and a modern framework (React or Angular) is a plus.
• Experience implementing CI/CD with GitHub Actions.
• Strong communication and ability to work effectively with cross-functional teams.

Technical Skills

• Experience with C# desktop application architecture, including event-driven programming and Office object model automation via VSTO. Familiarity with COM interop, JSON serialization/deserialization. Understanding of dependency injection patterns in .NET desktop apps.
• Familiarity of MongoDB.
• Git/GitHub workflows; CI/CD via GitHub Actions.
• Observability basics (structured logging, tracing, dashboards) and configuration management.
• Knowledge of services offered by AWS and Azure environments.

Certifications

• Will be a plus if you have already or required within first months: AWS Cloud Practitioner

What makes you stand out:

• Strong analytical and problem-solving skills.
• Excellent communication and interpersonal skills.
• Detail-oriented with focus on quality and maintainability.
• Proactive, self-motivated, and growth minded.
• Practical LLM usage for productivity (code assistance, test scaffolding) and implementation where appropriate.

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.

Marsh (NYSE: MRSH) is a global leader in risk, reinsurance and capital, people and investments, and management consulting, advising clients in 130 countries. With annual revenue of over $27 billion and more than 95,000 colleagues, Marsh helps build the confidence to thrive through the power of perspective. For more information, visit corporate.marsh.com, or follow us on LinkedIn and X.

Marsh is committed to creating a diverse, inclusive and flexible work environment. We aim to attract and retain the best people and embrace diversity of age, background, disability, ethnic origin, family duties, gender orientation or expression, marital status, nationality, parental status, personal or social status, political affiliation, race, religion and beliefs, sex/gender, sexual orientation or expression, skin color, or any other characteristic protected by applicable law.

Marsh is committed to hybrid work, which includes the flexibility of working remotely and the collaboration, connections and professional development benefits of working together in the office. All Marsh colleagues are expected to be in their local office or working onsite with clients at least three days per week. Office-based teams will identify at least one “anchor day” per week on which their full team will be together in person.