Senior Developer (Microsoft Dynamics & Integration)

JCDecaux North America; Greater London; On-site; GBP 65,000 - 90,000; Full time

Job summary

JCDecaux North America is seeking a hands-on software engineer to design, develop, and maintain integrations and customisations within Microsoft Dynamics 365, Dataverse, and Power Platform. You will build C#/.NET server-side plugins, create API integrations, and develop frontend components with JavaScript/TypeScript.

You’ll collaborate with architects, product teams, and external suppliers to deliver scalable, secure solutions, participate in code reviews, and mentor junior developers while

Qualifications

• Extensive experience with Microsoft Dynamics 365, Power Platform or Dataverse.
• Back-end and integration development using C#/.NET.
• Experience with APIs (REST/SOAP) and authentication methods.

Responsibilities

• Design, develop, and maintain customisations and extensions within Dynamics 365 and Dataverse.
• Build and maintain C# server-side plugins, workflows, and integration services.
• Develop integrations with external APIs with robust error handling.
• Create front-end components using JavaScript/TypeScript, HTML, and CSS.
• Collaborate with architects to translate designs into scalable solutions.
• Mentor junior developers and Promote best practices.

Skills

Dynamics 365

Power Platform

Dataverse

C#/.NET

APIs (REST/SOAP)

JavaScript/TypeScript

Azure

CI/CD

Databases

Communication

Mentoring

Tools

Azure DevOps

Job description

This role supports the design, development, and continuous improvement of our technology solutions across Microsoft Dynamics 365, Power Platform, and Azure environments. You’ll work closely with architects, product teams, and external suppliers to deliver scalable, secure, and high-quality technical solutions. Along the way, you’ll contribute to transformation initiatives, strengthen integration capabilities, and help improve system performance and reliability.
Reports to: Enterprise & Solution Architect

What you’ll be doing…

What you’ll be doing…

Design, develop, and maintain customisations and extensions within Microsoft Dynamics 365 and Dataverse

Build and maintain C# (.NET) server-side plugins, workflows, and integration services

Develop integrations with external APIs (REST, SOAP, webhooks) with strong error handling and resilience

Create and enhance front-end components using JavaScript/TypeScript, HTML, and CSS

Work closely with architecture teams to translate designs into scalable technical solutions

Collaborate with third-party suppliers to ensure quality and alignment with internal standards

Support live operations including issue resolution, releases, and performance improvements

Develop and maintain CI/CD pipelines and apply DevOps best practices

Contribute to data modelling, integration strategies, and performance optimisation

Participate in code reviews, design reviews, and technical documentation

Troubleshoot and resolve complex technical issues across systems

Provide input into planning, estimation, and technical risk assessment

Mentor junior developers and promote best practice across the team

A little about you…

Strong experience with Microsoft Dynamics 365, Power Platform, and Dataverse

Proficient in C# and .NET for back-end and integration development

Experience working with APIs (REST/SOAP) and authentication methods

Strong knowledge of JavaScript/TypeScript and modern web technologies

Experience with CI/CD, DevOps practices, and Azure services

Good understanding of databases and data modelling principles

Strong problem-solving skills and ability to manage complex technical issues

Excellent communication skills with both technical and non-technical stakeholders

Collaborative mindset and experience working with multiple stakeholders

Proactive approach with a focus on continuous improvement

A little bit about you…

n/a

A little bit more about us…

• We believe in building a diverse and inclusive culture and positive employee experience.

• We are One Team, more than just ourselves.

• We are customer first, we understand, and help solve our customers’ problems.

• We Test & Learn, we are empowered to learn and grow, unafraid of change.

• We choose to care, we are committed to doing the right thing, the right way.

It’s really important to us that we give as much to our colleagues as they give to us.

Our latest Belonging Survey showed that our colleagues feel valued and listened to as we continue to build an environment where everyone can thrive, grow, belong and be their authentic selves.

We believe that diversity of thought, experience and background provides the platform for great creativity,

We are committed to equal employment opportunities regardless of race, colour, ancestry, religion, national origin, sexual orientation, age, citizenship, marital status, disability or gender identity.

Many of our Colleagues work flexibly in many different ways. Please talk to us at interview about the flexibility you need. We can’t promise to give you exactly what you want, but we do promise not to judge you for asking.

About our recruitment process….

1. You find or get sent this job advert, read it, and feel like you’re you’d be a great addition to the JCD family.

2. You send in your application to let us know you’re interested.

3. We see your application, get excited, and give you a call.

4. You’ll meet us twice, depending on the role prepare a presentation and we’ll get to know each other.

5. You’ll begin your journey with us, we’re excited to support and develop you throughout your career.