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Marsh & McLennan Companies

Senior Javascript Developer

This is an opportunity to join a fast growing, strategically vital department of Marsh and McLennan Companies (MMC) during an exciting time for our in-house application development team. You will have a key role in delivering in innovative mobile and web apps for our clients, brokers and advisors.

You will be responsible for leading the design, development and roll-out of applications on MMC"EURTMs digital technology stack, with a focus on delivering solutions using an Agile framework. Ensuring solutions are innovative and of the highest quality, you will take a leadership role in ensuring that working practices and the technology stack evolve through continuous improvement of standards, practices and processes.

Main responsibilities will include:

  • Developing new insurance mobile and web apps, with a focus on maximising business value delivered.
  • Promoting and adopting good practices in software development.  We are passionate about clean code practices and test-driven development.
  • This is a new journey for MMC; and as such this position will involve helping us to drive and shape what that will look like
  • Collaborating with team members and customers, sharing opinions and listening to others.
  • Mentoring more junior team members
  • Contributing to improving our global technology approach, in areas such as:
    • Cloud Platforms, Container Technology, API Gateways, Microservices, Logging and Messaging Platforms
    • New Tech Stack i.e. Javascript, Angular, React, Node.js
    • Agile and DevOps delivery methodologies

Skills and Experience:

  • Comprehensive development experience
  • Likely degree in Computer Science or related field, or corresponding experience
  • Development of business facing, full stack Javascript applications
  • Passion for adopting good technical practices, enabling agility
  • Able to self-start the technical aspects of small scale projects
  • Experience working in teams using Agile working approach
  • Technical mentoring of more junior developers and offshore developers
  • Strong problem solving & analytical skills
  • Evidence of a strong team player
  • Strong communication skills and have proven experience working in a global team with in-house, contract, and 3rd party off-shore team members
  • Able to summarise complex technical issues to senior management


  • Javascript and related frameworks such as React or Angular
  • Node web platform
  • Test Frameworks such as Mocha, Jest
  • CI/CD and Devops platforms such as Jenkins "EUR~
  • NoSQL databases such as Mongo
  • Container and orchestration platforms such as Docker and Kubernetes
  • API Development such as REST and Graph QL
  • Agile delivery methodologies such as Scrum
  • GIT version control
  • Microservices, API Gateway, Cloud

About MMC:

Marsh & McLennan Companies is a global professional services firm offering clients advice and solutions in the areas of risk, strategy and people. Marsh is a leader in insurance broking and risk management; Guy Carpenter is a leader in providing risk and reinsurance intermediary services; Mercer is a leader in talent, health, retirement and investment consulting; and Oliver Wyman is a leader in management consulting. With annual revenue of $13 billion and approximately 60,000 colleagues worldwide, Marsh & McLennan Companies provides analysis, advice and transactional capabilities to clients in more than 130 countries. The Company is committed to being a responsible corporate citizen and making a positive impact in the communities in which it operates. We embrace a culture that celebrates and promotes the many backgrounds, heritages and perspectives of our colleagues and clients. For more information, please visit us at: more information and follow us on LinkedIn and Twitter @MMC_Global

Marsh & McLennan Companies offers competitive salaries and comprehensive benefits and programs including: health and welfare, tuition assistance, 401K, employee assistance program, domestic partnership benefits, career mobility, employee network groups, volunteer opportunities, and other programs. For more information about our company, please visit us at: embrace a culture that celebrates and promotes the many backgrounds, heritages and perspectives of our colleagues and clients. For more information, please visit us at:

Marsh & McLennan Companies and its Affiliates are EOE Minority/Female/Disability/Vet/Sexual Orientation/Gender Identity employers.

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