Senior Software Engineer

CREGG; Galway; On-site; EUR 90,000 - 120,000; Full time

Job summary

CREGG in Co. Galway, Ireland is seeking a Senior Software Engineer to join our growing tech team. You will leverage Next.js, Node.js, .NET/C#, and TypeScript to build secure, scalable web applications for real-world use.

You will collaborate with product and design teams, contribute to CI/CD pipelines, cloud deployments on Azure, and help shape architecture and best practices while mentoring junior developers. Our environment values problem-solving and teamwork.

Qualifications

• 5+ years of professional full-stack experience.
• Strong experience with Next.js, React.js, and Node.js.
• Backend development with .NET/C#.
• Experience with Azure Functions, Service Bus, Cosmos DB.
• Familiarity with SQL (MSSQL, PostgreSQL) and NoSQL (MongoDB).
• Experience with RESTful APIs and GraphQL.
• Experience with Docker and CI/CD pipelines.
• Excellent communication and problem-solving skills.

Responsibilities

• Design, develop, and maintain full-stack apps with Next.js, Node.js, .NET/C#, and TypeScript.
• Build responsive interfaces for customer-facing ecommerce platforms.
• Implement backend services and APIs using REST and GraphQL.
• Write testable code with Jest, xUnit, or NUnit.
• Optimize apps for speed, scalability, and reliability.
• Integrate with third-party platforms and Azure services.
• Participate in CI/CD workflows and automated testing.
• Participate in Agile ceremonies and sprint planning.

Skills

Full-stack development

Next.js

React.js

Node.js

NET/C#

TypeScript

Azure

GraphQL

REST APIs

Docker

Tools

Jest

xUnit

NUnit

Job description

Senior Software Engineer
Excellent opportunity for a Senior Software Engineer to join a thriving company in Co. Galway

The Senior Software Engineer will useNext.js,Node.js,.NET/C#, andTypeScriptto build performant, secure, and scalable web applications. This role is ideal for someone who enjoys solving real-world problems with modern technologies and collaborating closely with product and design teams.

Key Responsibilities

• Design, develop, and maintain full-stack applications using Next.js, Node.js, .NET/C#, and TypeScript


• Build responsive, accessible, and performant user interfaces for customer-facing eCommerce platforms


• Implement backend services and APIs using REST and GraphQL


• Write clean, testable, and maintainable code using frameworks such as Jest, xUnit, or NUnit


• Optimize applications for speed, scalability, and reliability


• Integrate with third-party platforms and services


• Work with cloud-native components including Azure Functions, Service Bus, and event-driven architecture


• Participate in Agile ceremonies, code reviews, and sprint planning


• Contribute to CI/CD workflows and automated testing and deployment pipelines


• Participate in the team’s on-call support rota, with coverage mostly focused on daytime hours

Key Requirements

• 5 plus years of professional experience in full-stack development


• Solid experience withNext.js,React.js, andNode.js


• Backend development experience with.NET/C#


• Experience withAzure, includingFunctions,Service Bus, andCosmos DB


• Familiarity with SQL (MSSQL, PostgreSQL) and NoSQL (MongoDB)


• Experience with RESTful APIs, GraphQL, and asynchronous data flows


• Comfortable working with Docker and CI/CD pipelines


• Strong communication and problem-solving skills