Senior Web Developer (Node.js) - Contractor Role

Stelfox Limited; Dublin; Hybrid; EUR 111,000 - 166,000; Part time

Job summary

Stelfox Limited is seeking a Senior Web Backend Developer (Node.js) on a daily rate contractor basis. The role is hybrid and focuses on building scalable server-side logic, APIs, and data-driven services for complex environments.

You will design secure APIs, work with cloud platforms (Azure), and contribute to production reliability while collaborating with architects and project managers. Strong Node.js, JS/TS, and database skills are essential for success.

Qualifications

• Minimum 5 years’ experience as a Back End Developer in complex environments.
• Strong Node.js and JavaScript/TypeScript expertise for server-side development.
• Proficiency with databases (SQL/NoSQL) and caching (Redis).
• Experience with cloud platforms (Azure preferred) and CI/CD pipelines.

Responsibilities

• Design, develop, and maintain server-side apps and microservices using Node.js.
• Architect and manage secure APIs (REST/GraphQL) for web and mobile.
• Integrate with third-party suppliers, legacy systems, and internal data sources.
• Maintain database schemas (SQL/NoSQL) to support data-driven apps.
• Ensure production stability and security; perform root cause analysis.
• Collaborate with Enterprise Architects on data governance and cloud standards.
• Provide technical leadership during sprint planning and refinement.
• Support the Programme Manager with visibility on progress and backend dependencies.

Skills

Node.js

JavaScript/TypeScript

Azure Cloud

CI/CD

REST/GraphQL

SQL/NoSQL DB

Redis

Agile

Jira

Job description

Senior Web Developer (Node.js) - Daily Rate Contractor Role - Hybrid Working Model - NEW Role

The Senior Web Back End Developer will be responsible for building scalable, secure, and efficient server-side logic and APIs.

The successful candidate will ensure that the back-end infrastructure is resilient, well-documented, and seamlessly integrated with various front-end applications and third-party systems.

Key Responsibilities

• Design, develop, and maintain server-side applications and microservices using Node.js.
• Architect and manage secure, high-performance APIs (REST or GraphQL) for web and mobile consumption.
• Integrate applications with third-party suppliers, legacy systems, and internal data sources.
• Design and maintain database schemas (SQL or NoSQL) to support data-driven applications.
• Perform root cause analysis of technical issues and ensure the stability and security of the production environment.
• Collaborate with Enterprise Architects to ensure alignment with data governance, security protocols, and cloud infrastructure standards.
• Provide technical leadership during sprint planning and refinement, ensuring back-end tasks are well-defined and estimated accurately.
• Support the Programme Manager by providing transparency on technical progress and managing backend-related dependencies.

Knowledge, Skills and Experience

• A minimum of 5 years’ experience as a Back End Developer working in complex technical environments.
• Strong expertise in Node.js and JavaScript/TypeScript for server-side development.
• Proficiency in other relevant languages (e.g., Python, Go) or frameworks is an advantage.
• Deep understanding of database management (e.g., MSSQL, PostgreSQL, MongoDB) and caching strategies (e.g., Redis).
• Experience with cloud platforms (Azure preferred) and CI/CD pipelines for automated deployment.
• Highly organized and detail-oriented, with a focus on writing clean, maintainable, and well-tested code.
• Strong communication skills, enabling you to build trust within technical teams and translate complex technical concepts for stakeholders.
• Self-driven and accountable, with a strong sense of ownership over the server-side architecture.
• Experience working in an agile project delivery model, plus experience of relevant tools such as Jira or DevOps.

Please note:

We have a number of similar positions currently, and in the future, which we would like to discuss with you should you indicate your interest in this role. When we receive your application for this role, we will contact you to advise you of our process for other similar positions.

Stelfox is fully compliant with GDPR regulations and you can read more in our privacy policy here: https://www.stelfox.com/privacy-policy-gdpr/

Your shared data will not be disclosed or transferred to a third party data controller or data processor located outside the EEA unless we have obtained your express consent.

We look forward to working with you.