Senior Software Engineer: Own a Full‑Stack Platform (AWS)

MCS Group; Dublin; On-site; EUR 70,000 - 80,000; Full time

Benefits offered by this job

Comprehensive benefits

Job summary

MCS Group is hiring a Senior Software Engineer to take ownership of a core software platform across a modern TypeScript stack, including a Node.js/NestJS backend, React admin portal and Next.js customer site hosted on AWS.

You’ll work with an external partner initially, then help bring development in-house, shaping engineering practices and delivering practical platform improvements and features.

Qualifications

• 5+ years of software development experience with TypeScript, Node.js/NestJS and React/Next.js.
• Experience building production applications on AWS with infrastructure as code (AWS CDK).
• Strong MySQL knowledge including schema design, indexing and performance.
• Experience integrating third‑party APIs, payments or identity verification services.
• Strong focus on automated testing, CI/CD and application security.
• Experience using AI-assisted development workflows and clear testing practices.
• Ability to work independently and communicate clearly with technical and non‑technical colleagues.
• Stamp 4 or EU Citizenship required.

Responsibilities

• Develop new features, enhancements and bug fixes across backend services and frontend applications.
• Maintain APIs, MySQL databases and third‑party integrations such as payments and identity verification.
• Improve performance, accessibility, reliability and customer experience.
• Support real‑time functionality, search and content delivery.
• Collaborate with external partners and transfer knowledge for in-house ownership.
• Contribute to automated testing, CI/CD pipelines and AWS infrastructure as code.
• Monitor production services with a focus on security and maintainability.

Skills

TypeScript

Node.js/NestJS

React/Next.js

AWS

MySQL

TypeORM

CI/CD

AI-assisted development

Testing

Security

Tools

AWS CDK

Socket.IO

OpenSearch

Next.js

Claude Code

Job description

MCS Group is hiring a Senior Software Engineer to take ownership of a core software platform across a modern TypeScript stack, including a Node.js/NestJS backend, React admin portal and Next.js customer site hosted on AWS.

You’ll work with an external partner initially, then help bring development in-house, shaping engineering practices and delivering practical platform improvements and features.