Marsh McLennan

Senior Applications Developer

Marsh McLennan$120K — $150K *
Information Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • 10+ years of software development experience.
  • Expert-level proficiency in C# (v12), .NET (v8), and Visual Studio 2022/2023.
  • Strong knowledge of threading, async/await, LINQ, pattern matching, interoperability, and REST API design.
  • Experience architecting maintainable, flexible, scalable, cloud-native solutions, especially in Azure.
  • Excellent communication and teamwork skills, with Agile experience.
  • Proven ability to ship commercial software or customer-facing online experiences.
  • Willingness to travel occasionally and ability to work both remotely and in person.

Responsibilities

  • Develop customer-facing online experiences, including portals and licensing tools.
  • Build high-performance applications in C#/.NET following modern standards.
  • Support migration and development across Azure and other cloud platforms.
  • Collaborate with actuaries, QA, and product partners to design and test software tools.
  • Enhance telemetry and reporting to improve product usability and performance.

Benefits

  • Flexible work arrangements, allowing both remote and in-person options.
  • Opportunities for professional development and skill enhancement.
Full Job Description
Company:
Guy Carpenter

Description:

As a Senior Software Developer, you will design, develop, implement, and support high-performance, scalable .NET scientific simulation platforms using agile practices. This hands-on role requires both independent work and collaboration to enhance usability, performance, automation, and scalability.

We will count on you to:
  • Develop customer-facing online experiences, including portals, licensing tools, help content, and news features.
  • Build high-performance applications in C#/.NET using modern development standards and best practices.
  • Support migration and development efforts across Azure and other cloud platforms.
  • Collaborate with actuaries, QA, domain experts, and product partners to design, test, and support software tools.
  • Enhance telemetry, reporting, dashboards, and user feedback loops to improve product usability and performance.


What you need to have:
  • 10+ years of software development experience.
  • Expert-level proficiency in C# (v12), .NET (v8), and Visual Studio 2022/2023.
  • Strong knowledge of threading, async/await, LINQ, pattern matching, interoperability, and REST API design.
  • Experience architecting maintainable, flexible, scalable, cloud-native solutions, especially in Azure.
  • Excellent communication, teamwork, and self-motivation skills, with experience working directly with users in an Agile environment.
  • Proven ability to ship commercial software or customer-facing online experiences.
  • Ability to work both remotely and in person, with willingness to travel occasionally.
  • Experience with SQL, Protobuf, and interactive charting/graphing packages.


What makes you stand out:
  • Experience with Object-Oriented Analysis and Design (OOAD).
  • Familiarity with Angular, WebAssembly, HTML, CSS, TypeScript, JavaScript, and jQuery.
  • Additional background in Python, Kubernetes, C++, C++/CLI, or a strong mathematics foundation.
  • Experience working with LLMs and AI agent technologies.


About Marsh McLennan

Marsh McLennan Careers

Join the exceptional team at Marsh McLennan, a global leader in professional services, offering unparalleled job opportunities in insurance, risk management, and consultancy. As the company propels forward, it invites dedicated professionals to contribute to a culture of innovation, leadership, and growth.

Work You’ll Do

At Marsh McLennan, you will engage with complex challenges that push the boundaries of your skills and knowledge. Our team thrives on diversity and the shared goal of delivering impactful solutions to our clients worldwide. By joining us, you will be part of a culture that values diversity training and leadership development, ensuring every team member is equipped for success.

Explore Professional Growth

Marsh McLennan is committed to the professional growth of its employees. Whether you are seeking a position that offers a path to leadership or looking for robust internship programs to kickstart your career, Marsh McLennan provides the resources and global platform to propel your ambitions into achievements. Our benefits package is designed to support the well-being and continuous professional development of all staff, from entry-level to senior leadership roles.

Innovative Work Environment

Our company is at the forefront of industry innovation. The collaboration between experienced professionals and fresh talent generates dynamic solutions that keep Marsh McLennan at the cutting edge of the industry. Our team is encouraged to lead with creativity and embrace new ideas, driving the company’s legacy of pioneering industry-first solutions.

Join Our Team

Marsh McLennan is hiring! Explore the multitude of job opportunities on our careers page, from strategic advisory roles to operational excellence positions. We look for passionate, curious, and solution-driven team players. Enhance your career with Marsh McLennan, where your skills will be honed through challenging projects and high-impact strategies.

Networking and Career Advancement

Networking at Marsh McLennan opens doors to enriching connections and countless opportunities within the industry. Our professionals benefit from an environment that fosters networking through events, professional groups, and collaborative projects. With Marsh McLennan, career advancement is not just a possibility—it is an expectation.

Prepare for Your Interview

Ready to apply? Make sure your resume highlights your most relevant experiences and skills tailored to the position you are applying for. Our interview process is designed to understand your capabilities and fit with our team’s goals and values. Prepare to discuss how your background, experiences, and professional aspirations align with the opportunities at Marsh McLennan.

Stay Connected

Keep up to date with the latest from Marsh McLennan: - **Career Insights**: Gain insider perspectives and industry-leading insights through our careers blog. - **Job Alert Emails**: Personalize your subscription to receive job alerts and the latest news tailored to your preferences. Discover the rewarding career opportunities awaiting at Marsh McLennan, where your professional journey is just the beginning. Join us in shaping a future defined by insight, integrity, and innovation.
Learn more about Marsh McLennan
Size
83,000 employees
Market Cap
$82.6 billion
Industry
Net Income
$2 billion
Founded
1914
5 Year Trend
+8.5%
Revenue
$17.2 billion
NASDAQ

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