Applications Developer

Marsh; Greater London; Hybrid; GBP 55,000 - 75,000; Full time

Benefits offered by this job

Professional development opportunities

Supportive leaders

Inclusive culture

Job summary

Marsh is seeking an Applications Developer based in their London office. This hands-on technical role focuses on improving data processes, enhancing robustness and performance of technology systems, and redesigning data pipelines. The successful candidate will join a vibrant culture promoting professional development and inclusion.

The ideal candidate will have a BSc or MSc, experience with C# and Python, and strong analytical skills. The job promotes a hybrid work environment, blending remote and in-office collaboration.

Qualifications

• Current experience with C# and Python and a passion for software development.
• Strong SQL skills.
• Experience in designing robust data flows and systems.

Responsibilities

• Work closely with the Head of Production and support teams to identify areas for improvement.
• Learn our technology architecture and systems, focusing on trading systems.
• Collaborate with the broader Engineering team.

Skills

C#

Python

SQL

Analytical skills

Technical analysis

Education

BSc or MSc in a relevant discipline

Tools

Apache Airflow

Databricks

Job description

Mercer is seeking candidates for the following position based in the London office:

Applications Developer

What 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 improvement
• Learn our technology architecture and systems, with a focus on trading systems and the data lake used for regulatory reporting
• Collaborate with the broader Engineering team to understand practices and architecture
• Perform technical analysis to identify root causes of issues
• Design and implement technical changes and improvements
• Take part in coding and code reviews
• Work closely with business teams as needed

What you need to have:

• BSc or MSc in a financial, technological, mathematical, or scientific discipline, with a strong analytical foundation
• Current experience with C# and Python and a passion for software development
• Strong SQL skills
• Experience in designing robust data flows and systems
• Strong, clear, and concise communication skills, both verbal and written
• A strong sense of responsibility and commitment to qualitySelf‑driven, motivated work ethic
• Energetic and enthusiastic personality

What makes you stand out:

• IMC or another investment management qualification
• Experience with Apache Airflow
• Experience with Databricks
• Experience with asset management data
• Passion for design and architecture

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 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 [e-mail].

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.

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