Principal Engineer - Applications Development

Company: Marsh Description: We are looking for a skilled .NET Developer with strong SQL knowledge and preferred exposure to the MEAN stack, along with familiarity with AI tools and AI-assisted development practices. Role summary The .NET Developer will design, develop, and support enterprise applications and services with a strong focus on .NET, SQL, and solution reliability. The role also values experience with modern web technologies, cross-functional delivery, and the ability to use AI-enabled tools to improve productivity and quality. Key responsibilities Develop and maintain scalable applications using .NET technologies. Design, write, and optimize SQL queries, stored procedures, and database objects. Build and support secure, high-quality backend services and APIs. Collaborate with product, QA, and infrastructure teams to deliver enhancements and production support. Participate in code reviews, testing, debugging, and performance tuning. Support troubleshooting and root-cause analysis for application and database issues. Contribute to design discussions, technical estimation, and delivery planning. Use AI tools and AI-assisted development capabilities to improve development speed, code quality, testing, and documentation. Apply secure coding practices and follow engineering standards throughout the delivery lifecycle. Required skills and experience Strong hands-on experience in .NET development. Strong SQL knowledge, including queries, stored procedures, and relational database concepts. Good understanding of object-oriented programming, API development, and software engineering principles. Experience with debugging, unit testing, and performance optimization. Ability to work effectively in a collaborative, global delivery environment. Strong communication skills and a proactive approach to problem-solving. Preferred skills Exposure to the MEAN stack, especially Angular, Node.js, and MongoDB. Familiarity with web application development and modern UI integration patterns. Experience with CI/CD pipelines, Git, and DevOps practices. Exposure to cloud environments, containerization, or Kubernetes is an added advantage. Experience using AI coding assistants, prompt-based tools, or AI-assisted testing/documentation workflows. What you need to have: Minimum 12 months experience as Principal Engineer/Senior Principal Engineer Should have at least “On track” or above in last appraisal Should not be under any Performance Continuity Plan, or had any official Disciplinary action within the last 3 months Should not have applied for any other IJP within Marsh McLennan in the last 3 month What success looks like Delivers reliable and maintainable .NET solutions with strong database support. Improves delivery efficiency through effective use of AI tools and automation. Works well across teams and supports business priorities on time. Contributes to a stable, scalable, and collaborative engineering environment. 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 marsh.com, or follow us on LinkedIn and X. Marsh is committed to embracing a diverse, inclusive and flexible work environment. We aim to attract and retain the best people and embrace diversity of age, background, caste, disability, ethnic origin, family duties, gender orientation or expression, gender reassignment, 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.