Backend Engineer (Node.js)

Contract | Hybrid | North Dublin

We are currently partnering with a leading organisation undergoing a major digital transformation programme to recruit an experienced Senior Back-End Developer on a contract basis.

This is an exciting opportunity to join a high-profile project focused on enhancing customer experience and operational efficiency through innovative web and mobile solutions. You'll play a critical role in designing, developing, and maintaining the server-side architecture that powers a large-scale digital ecosystem used by thousands of customers daily.

The Opportunity

As a Senior Back-End Developer, you will be responsible for building scalable, secure, and high-performing back-end services, APIs, and integrations. Working closely with architects, developers, and programme stakeholders, you'll help deliver robust solutions that support a modern digital platform.

This role would suit someone who thrives in complex technical environments and enjoys taking ownership of backend architecture, performance, and security.

Key Responsibilities

• Design, develop, and maintain server-side applications and microservices using Node.js.
• Build and manage secure, scalable APIs (REST and/or GraphQL) for web and mobile applications.
• Integrate solutions with third-party platforms, legacy systems, and internal services.
• Design and optimise database structures across SQL and NoSQL technologies.
• Troubleshoot production issues, conduct root cause analysis, and implement long-term solutions.
• Ensure backend services meet security, performance, and reliability standards.
• Collaborate with Enterprise Architects to align solutions with cloud, security, and governance frameworks.
• Provide technical input during sprint planning, backlog refinement, and estimation sessions.
• Support programme delivery by managing technical dependencies and providing visibility on development progress.

Required Experience

• 5+ years' experience in Back-End Development within enterprise or complex technology environments.
• Strong hands-on expertise with Node.js and JavaScript/TypeScript.
• Experience developing and maintaining RESTful APIs and microservices architectures.
• Strong database experience including technologies such as SQL Server, PostgreSQL, and MongoDB.
• Knowledge of caching solutions such as Redis.
• Experience working with cloud technologies, ideally Microsoft Azure.
• Familiarity with CI/CD pipelines and automated deployment practices.
• Strong understanding of software engineering best practices, testing, and code quality standards.
• Experience working within Agile delivery environments using tools such as Jira or Azure DevOps.

Desirable Skills

• Experience with additional programming languages such as Python or Go.
• Previous experience working on large-scale digital transformation programmes.
• Exposure to high-availability, customer-facing digital platforms.

Personal Attributes

• Strong problem-solving and analytical skills.
• Excellent communication and stakeholder engagement abilities.
• Highly organised with strong attention to detail.
• Self-motivated with a strong sense of ownership and accountability.
• Ability to work collaboratively across technical and non-technical teams.