Senior Developer (Microsoft Dynamics & Integration)

jcdecaux; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

jcdecaux in London is seeking an experienced software engineer to design, develop, and extend Microsoft Dynamics 365, Dataverse, and Power Platform solutions. You will build server-side plugins in C#/.NET, create integrations with REST and SOAP APIs, and craft responsive front-end components using JavaScript/TypeScript.

Working with architects and suppliers, you will implement CI/CD pipelines, mentor junior developers, and drive performance and security improvements across Azure environments.

Qualifications

• Strong experience with Dynamics 365, Power Platform and Dataverse.
• Proficient in C# and .NET for backend/integration work.
• Experience with REST/SOAP APIs and authentication methods.
• Solid JavaScript/TypeScript and modern web tech knowledge.
• Experience with CI/CD, DevOps practices and Azure services.
• Good understanding of databases and data modelling.
• Strong problem-solving and complex issue handling.
• Excellent communication with technical and non-technical stakeholders.

Responsibilities

• Design, develop, and maintain customisations and extensions in Dynamics 365 and Dataverse.
• Build and maintain C#/.NET server-side plugins, workflows, and integrations.
• Develop integrations with external APIs (REST, SOAP) with error handling.
• Create front-end components using JavaScript/TypeScript, HTML, CSS.
• Collaborate with architecture teams to translate designs into scalable solutions.
• Work with third-party suppliers to align with internal standards.
• Support live operations including issue resolution, releases, and performance improvements.
• Develop and maintain CI/CD pipelines and apply DevOps practices.
• Contribute to data modelling, integration strategies, and performance optimisation.
• Participate in code/design reviews and document technical decisions.
• Mentor junior developers and promote best practices.

Skills

Dynamics 365

Power Platform

Dataverse

C#/.NET

APIs REST/SOAP

JS/TS

Azure

CI/CD

DevOps

Data modelling

Stakeholder comms

Mentoring juniors

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...

• 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. We see your application, get excited, and give you a call.
3. You'll meet us twice, depending on the role prepare a presentation and we'll get to know each other.
4. You'll begin your journey with us, we're excited to support and develop you throughout your career.