Mulesoft Lead Engineer; SC Clearance required

Team you’ll be working with

NTT DATA UK is seeking a Mule Soft Engineer to join our growing practice. You will be part of an agile team building digital products, enhancing and developing software components.

Your main responsibility will be to deliver clean, maintainable, and well‑tested code that adheres to SOLID principles. You will work collaboratively across Quality Assurance, Dev Ops, and other development teams, sharing knowledge, supporting onboarding, and contributing to code reviews.

Due to the nature of the work/client you must have or be eligible for SC Clearance (British Passport holder or 5 years continuous residence in the UK).

• Deliver high‑quality, maintainable code and development outcomes.
• Manage data exchange between backend services, front‑end applications, and third‑party APIs.
• Develop server‑side logic in collaboration with Business Analysts and QA, ensuring requirements are met and code is testable.
• Lead and contribute to technical user stories, focusing on integration and service optimisation.
• Document solutions using diagrams, flowcharts, and clear code comments.
• Ensure compliance with quality standards, including automated testing and code reviews.
• Address non‑functional requirements such as performance, monitoring, and operational support.
• Support releases through all development environments, maintaining quality and reliability.
• Contribute to skill development and technology adoption within the team.
• Present technical concepts in demos and participate in user feedback sessions.
• Provide accurate work estimates and support agile planning.
• Balance delivery pace with documentation, test automation, and technical debt reduction.

• Experience delivering integration microservices using Mule Soft best practices.
• Proven ability to write clean, maintainable code following SOLID principles.
• Designing RAML, REST APIs, flow control, and error handling.
• Hands‑on experience with the Anypoint Platform (Cloud Hub, VPC, VPN, DLB, firewalls, and cloud technologies).
• Securing and managing APIs using API Manager.
• Developing frameworks for error handling and logging.
• Managing the API development lifecycle from design to governance and management.
• Working with batch message processing, Salesforce, file, and database connectors.
• Using MUnit and practising test‑driven development.
• Experience with REST, HTTP, MQ, JSON, XML, and SOA.
• Familiarity with CI/CD pipelines (Maven, Jenkins, Bitbucket, Git, Mule Soft).

• Experience working in consulting or public sector environments.
• Experience as a microservices developer.
• Mule Soft certification.

• Typically, candidates have substantial experience in Mule Soft integration development, but we welcome applicants with a range of backgrounds and relevant skills.
• Degree in a relevant field (e.g. Computer Science, Statistics) or equivalent practical experience.
• Eligible for SC clearance (requires 5 years’ residency in the UK; citizenship is not mandatory).
• Able to adapt to changing priorities and client needs.

We’re a business with a global reach that empowers local teams, and we undertake hugely exciting work that is genuinely changing the world. Our advanced portfolio of consulting, applications, business process, cloud, and infrastructure services will allow you to achieve great things by working with brilliant colleagues, and clients, on exciting projects.

Our inclusive work environment prioritises mutual respect, accountability, and continuous learning for all our people. This approach fosters collaboration, well‑being, growth and agility, leading to a more diverse, innovative and competitive organisation. We are also proud to share that we have a range of Inclusion Networks such as: the Women’s Business Network, Cultural and Ethnicity Network, LGBTQ+ & Allies Network, Neurodiversity Network and the Parent Network.

For more information on Diversity, Equity and Inclusion please :
Creating Inclusion Together at NTT DATA UK

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