On Lead - D365 Engineer (Finance)

On
London
In the dynamic landscape of On, the tech thrives much like a spirited runner: always moving, always improving. We are building technology that continues to supercharge the growth of On, helping to ignite the human spirit through movement. As an integral part of our D365 F&O team at On, you'll find yourself at the heart of a fast-paced, diverse environment. Our ecosystem thrives on collaboration - a confluence of curious minds challenging and learning from one another, always seeking the uncharted. Here, we venture into new territories of technology, continuously refining our approach and embracing challenges head-on. In this role, you will play a critical part in designing, developing, and implementing D365 solutions that optimize our finance operations and enhance our customer experiences. You will be a technical leader, providing guidance and mentorship to team members.

Your Mission

D365 Implementation and Customization:
• Lead and participate in the full lifecycle of D365 projects, including requirements gathering, design, development, testing, deployment, and support.
• Develop custom solutions within D365 F&O (Finance and Operations)to meet specific business needs in the retail industry.
• Configure and customize D365 modules relevant to finance
• Integrate D365 with other business systems (e.g., CRM, ERP, e-commerce platforms). Technical Expertise:
• Possess deep technical understanding of D365 architecture, development frameworks (X++, .NET), and data management.
• Write clean, efficient, and well-documented code.
• Conduct code reviews and ensure adherence to development best practices.
• Stay current with the latest D365 features, updates, and industry trends. Solution Design:
• Translate business requirements into technical specifications and design documents.
• Propose and evaluate different technical solutions to address complex finance challenges.
• Contribute to the overall architecture and design of D365 solutions. Teamwork and Mentorship:
• Collaborate effectively with cross-functional teams
• Provide technical guidance and mentorship to developers.
• Share knowledge and best practices with the team. Problem Solving and Support:
• Troubleshoot and resolve technical issues related to D365 implementations.
• Provide ongoing support and maintenance for existing D365 systems.
• Proactively identify and address potential system performance bottlenecks.

Your Story

• 6+ years of experience in Dynamics 365 development and implementation, with a specific focus on the retail industry.
• Strong proficiency in X++, TypeScript, .NET, C#, and related technologies.
• Experience with D365 F&O modules relevant to finance (GL,AP,AR etc.)
• Knowledge of D365 data management and integration tools.
• Experience with Azure DevOps/Jira or similar tools for source control and CI/CD.
• Understanding of finance business processes (e.g., accounting, controlling, financial planning & reporting).

Meet The Team

You will be part of a highly specialized D365 F&O team that implements features from design to deployment, being responsible and in charge of the full process and delivery. You have a lot of freedom to be creative and experiment with new technologies within the Microsoft stack. We encourage you to continuously improve efficiency, finding new ways of working with the team members, while at the same time enjoying work with passionate people. We live agile values, not just talk about it.

What We Offer

On is a place that is centered around growth and progress. We offer an environment designed to give people the tools to develop holistically - to stay active, to learn, explore and innovate. Our distinctive approach combines a supportive, team-oriented atmosphere, with access to personal self-care for both physical and mental well-being, so each person is led by purpose. On is an Equal Opportunity Employer. We are committed to creating a work environment that is fair and inclusive, where all decisions related to recruitment, advancement, and retention are free of discrimination.
Posted 2026-05-15

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