Full Stack Developer

Job Description: Full Stack Engineer

Position Overview

We are seeking a skilled Full Stack Engineer to contribute to the development of our enterprise-grade, multi-tenant SaaS platform. You will design and implement features across the entire stack, collaborate on architectural decisions, and ensure code quality and scalability. Working with product, design, and infrastructure teams, you will help drive best practices in modern full stack development while growing your technical leadership skills.

Key Responsibilities

• Design and develop frontend features using React.js with hooks, context API, and performance optimization techniques
• Design and develop backend features using Node.js 20+ and TypeScript
• Build and maintain scalable multi-tenant architectures with proper tenant isolation and data security
• Architect modular, maintainable components and services following SOLID principles
• Implement state management solutions using Redux, Zustand, or similar tools
• Design and implement database schemas and queries using Prisma ORM and PostgreSQL
• Implement UI designs using Material UI, ensuring exceptional UI/UX quality
• Design and implement RESTful APIs, ensuring data integrity, security, and good developer experience
• Build serverless applications using AWS Lambda, API Gateway, SQS, EventBridge, and other AWS services
• Implement authentication and authorization flows (JWT, OAuth) with proper security measures
• Write comprehensive tests (Jest, React Testing Library, Cypress) and optimize application performance
• Participate in code reviews and contribute to team knowledge sharing
• Collaborate cross-functionally to translate requirements into scalable technical solutions
• Stay current with technology trends and contribute to technical discussions

Ideal Candidate Profile

Education: Bachelor’s or Master’s degree in Computer Science, Engineering, or related field

Experience:

• 3-5 years of professional full stack development experience with React and Node.js/TypeScript
• 1+ years building production APIs with TypeScript and Node.js
• 1+ years hands-on experience with AWS Lambda and serverless architecture
• Experience with multi-tenant SaaS systems
• Proven track record of delivering features in enterprise applications
• Experience working in agile environments with cross-functional teams

Skills:

• Strong proficiency in React.js, including hooks, context API, and component patterns
• Strong proficiency in TypeScript and Node.js
• Hands-on experience with AWS Lambda and serverless technologies (API Gateway, SQS, EventBridge)
• Understanding of multi-tenant SaaS architecture including tenant isolation and data security
• Experience with state management patterns using Redux, Zustand, or MobX
• Solid knowledge of PostgreSQL including queries, optimization, and schema design
• Experience with Prisma ORM or similar ORMs for database interactions
• Experience with Material UI or similar design systems and component libraries
• Experience designing RESTful APIs
• Familiarity with authentication flows (OAuth, JWT) and security best practices
• Experience with Express or similar Node.js frameworks
• Strong testing methodology including unit, integration, and end-to-end testing
• Experience with CI/CD pipelines
• Experience with AI/ML API integrations is a plus
• Field service management or B2B SaaS background is a plus
• AWS certifications are a plus
• Excellent problem-solving, communication, and collaboration skills

Tech Stack

TypeScript, React.js, Node.js 20+, Material UI, Redux/Zustand, AWS Lambda, API Gateway, SQS, EventBridge, PostgreSQL, Prisma ORM, Express, S3

Job Types: Full-time, Permanent

Please note that ONEngine is currently unable to provide visa sponsorship for this position. Candidates must be authorized to work in Ireland without sponsorship now or in the future.

Job Types: Full-time, Permanent

Pay: €70,000.00-€110,000.00 per year

Benefits:

• Work from home

Application question(s):

• Are you an Irish citizen?

Experience:

• TypeScript: 1 year (preferred)
• React.js: 1 year (preferred)
• Node.js: 1 year (preferred)
• Material UI: 1 year (preferred)
• AWS Lambda: 1 year (preferred)
• API Gateway: 1 year (preferred)
• SQS: 1 year (preferred)
• EventBridge: 1 year (preferred)
• PostgreSQL: 1 year (preferred)
• Prisma ORM: 1 year (preferred)
• Express: 1 year (preferred)

Work Location: Hybrid remote in Dublin, County Dublin