Applications Developer

Job ID: R_353171Company: Marsh McLennanLocation: Tower Place West, Tower Place, London, EC3R 5BU, United KingdomJob Type: RegularCategory: TechnologyIndustry: Real EstateSalary: 80000Posted Date: 2026-06-19Contact Email: reasonableaccommodations@marsh.comMercer is seeking candidates for the following position based in the London office:Applications DeveloperWhat can you expect This is a hands-on technical role focused on improving the robustness, stability, and performance of our technology systems. You will work across the technology platform, with an initial focus on data pipelines, helping to redesign and enhance data processes to make them more fault tolerant, scalable, and efficient. The role offers broad exposure to investment management data, systems, and the wider business.We will count on you to:Work closely with the Head of Production and support teams to identify areas for improvementLearn our technology architecture and systems, with a focus on trading systems and the data lake used for regulatory reportingCollaborate with the broader Engineering team to understand practices and architecturePerform technical analysis to identify root causes of issuesDesign and implement technical changes and improvementsTake part in coding and code reviewsWork closely with business teams as neededWhat you need to have: BSc or MSc in a financial, technological, mathematical, or scientific discipline, with a strong analytical foundationCurrent experience with C# and Python and a passion for software developmentStrong SQL skillsExperience in designing robust data flows and systemsStrong, clear, and concise communication skills, both verbal and writtenA strong sense of responsibility and commitment to qualitySelf-driven, motivated work ethicEnergetic and enthusiastic personalityWhat makes you stand out:IMC or another investment management qualificationExperience with Apache AirflowExperience with DatabricksExperience with asset management dataPassion for design and architectureWhy join our team:We help you be your best through professional development opportunities, interesting work and supportive leadersWe foster a vibrant and inclusive culture where you can work with talented colleagues to create new solutions and have impact for colleagues, clients and communitiesOur 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 embracing a diverse, inclusive and flexible work environment. We aim to attract and retain the best people and embrace diversity of age background, civil partnership status, 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. We are an equal opportunities employer. We are committed to providing reasonable adjustments in accordance with applicable law to any candidate with a disability to allow them to fully participate in the recruitment process. If you have a disability that may require reasonable adjustments, please contact us at reasonableaccommodations@marsh.com.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.Skillscommunication skillsdata flowsapache airflowdata pipelinesfixed incomederivativesbondspythontechnical analysisc#collaborationquality commitmentsqldatabricksinvestment managementproblem solving