Job VC
Senior Fullstack (React.JS/.NET) Engineer
Technologies
Description
Our client is a 20-year-old Dublin-based software services company specializing in custom Learning Management Systems for clients across Europe and the US. Through a joint venture with Nucleus AI, the client is now embedding AI/ML capabilities into its LMS — currently powering a v2→v3 upgrade for the largest remote-online-learning provider in Pennsylvania.
You’ll join a mature engineering org with a long-running product, working alongside an AI/ML team brought in via the JV to modernize the platform.
Role
We’re looking for a
Senior Fullstack .NET Engineer
to take ownership of end-to-end application delivery across backend architecture, frontend implementation, cloud infrastructure, and production-quality engineering.
This is
not a backend-only role
. The position requires strong .NET backend expertise, but the engineer is also expected to contribute directly to frontend development, user-facing features, API integration, debugging across the full application flow, and collaboration with product and frontend teams.
This role is hands-on and requires experience in distributed systems, cloud environments, scalable API design, and practical frontend delivery. You’ll work closely with product, architecture, frontend, backend, and AI/ML teams to deliver reliable, secure, maintainable, and user-facing systems.
Responsibilities
Fullstack Product Development
Build and maintain end-to-end product features across backend services and frontend application layers.
Work with frontend frameworks such as React, Angular, or Blazor to deliver user-facing functionality.
Integrate frontend applications with backend APIs and ensure smooth client-server communication.
Debug issues across the full application stack, including frontend behavior, API contracts, backend logic, database interactions, and deployment environments.
Collaborate with product, design, frontend, backend, and AI/ML teams to translate requirements into working product features.
Ensure frontend and backend changes are aligned, tested, and production-ready.
Backend Development & Architecture
Design and build scalable backend services using .NET Core / .NET Framework.
Develop RESTful APIs and microservices using ASP.NET Core.
Apply clean architecture principles and enforce coding standards.
Ensure systems are performant, secure, and maintainable.
Cloud & Infrastructure
Build and operate services on Microsoft Azure, including App Services, Functions, Azure SQL, and AKS.
Implement CI/CD pipelines using Azure DevOps or GitHub Actions.
Work with containerized environments such as Docker and Kubernetes.
Ensure system reliability, monitoring, and disaster recovery strategies.
Code Quality & Performance
Conduct code reviews and enforce best practices across backend and frontend codebases.
Implement unit, integration, and end-to-end testing where appropriate.
Monitor, profile, and optimize system performance across application layers.
Security & Compliance
Implement secure authentication and authorization using OAuth, JWT, or similar approaches.
Follow OWASP best practices.
Ensure data protection and system integrity.
Documentation & Improvement
Document technical decisions, API contracts, system behavior, and development workflows.
Continuously improve system design and development workflows.
Stay current with .NET, frontend, and cloud ecosystem developments.
Requirements
5+ years of professional engineering experience, with strong commercial experience in .NET / C#.
Strong experience with ASP.NET Core, Web API, Entity Framework, and SQL Server.
Hands-on frontend experience with React, Angular, Blazor, or a comparable modern frontend framework.
Ability to build fullstack features from database and backend logic through API design and frontend implementation.
Experience integrating frontend applications with REST APIs and debugging client-server issues.
Hands-on experience with Microsoft Azure.
Experience with CI/CD pipelines and Git.
Experience with Docker and Kubernetes.
Strong understanding of SDLC, SOLID, and design patterns.
Experience with unit testing frameworks such as xUnit, NUnit, or MSTest.
Ability to debug and resolve complex issues across the full application stack.
Strong communication skills and ability to work closely with cross-functional teams.
Nice to Have
Strong experience with React.
Experience with messaging systems such as RabbitMQ, Kafka, or Azure Service Bus.
Familiarity with NoSQL databases such as Cosmos DB or MongoDB.
Azure certifications.
Experience in LMS, edtech, legal-tech, fintech, or data-heavy platforms.
Experience working with AI-assisted systems, AI/ML integrations, or data-driven product features.
What Matters for This Role
Ownership mindset
— ability to take responsibility for features and systems end-to-end.
Strong backend engineering foundation combined with practical frontend delivery skills.
Comfort working in ambiguous, fast-moving environments.
Strong engineering judgment and pragmatic decision-making.
Ability to collaborate across backend, frontend, cloud, product, and AI/ML teams.
You’ll join a mature engineering org with a long-running product, working alongside an AI/ML team brought in via the JV to modernize the platform.
Role
We’re looking for a
Senior Fullstack .NET Engineer
to take ownership of end-to-end application delivery across backend architecture, frontend implementation, cloud infrastructure, and production-quality engineering.
This is
not a backend-only role
. The position requires strong .NET backend expertise, but the engineer is also expected to contribute directly to frontend development, user-facing features, API integration, debugging across the full application flow, and collaboration with product and frontend teams.
This role is hands-on and requires experience in distributed systems, cloud environments, scalable API design, and practical frontend delivery. You’ll work closely with product, architecture, frontend, backend, and AI/ML teams to deliver reliable, secure, maintainable, and user-facing systems.
Responsibilities
Fullstack Product Development
Build and maintain end-to-end product features across backend services and frontend application layers.
Work with frontend frameworks such as React, Angular, or Blazor to deliver user-facing functionality.
Integrate frontend applications with backend APIs and ensure smooth client-server communication.
Debug issues across the full application stack, including frontend behavior, API contracts, backend logic, database interactions, and deployment environments.
Collaborate with product, design, frontend, backend, and AI/ML teams to translate requirements into working product features.
Ensure frontend and backend changes are aligned, tested, and production-ready.
Backend Development & Architecture
Design and build scalable backend services using .NET Core / .NET Framework.
Develop RESTful APIs and microservices using ASP.NET Core.
Apply clean architecture principles and enforce coding standards.
Ensure systems are performant, secure, and maintainable.
Cloud & Infrastructure
Build and operate services on Microsoft Azure, including App Services, Functions, Azure SQL, and AKS.
Implement CI/CD pipelines using Azure DevOps or GitHub Actions.
Work with containerized environments such as Docker and Kubernetes.
Ensure system reliability, monitoring, and disaster recovery strategies.
Code Quality & Performance
Conduct code reviews and enforce best practices across backend and frontend codebases.
Implement unit, integration, and end-to-end testing where appropriate.
Monitor, profile, and optimize system performance across application layers.
Security & Compliance
Implement secure authentication and authorization using OAuth, JWT, or similar approaches.
Follow OWASP best practices.
Ensure data protection and system integrity.
Documentation & Improvement
Document technical decisions, API contracts, system behavior, and development workflows.
Continuously improve system design and development workflows.
Stay current with .NET, frontend, and cloud ecosystem developments.
Requirements
5+ years of professional engineering experience, with strong commercial experience in .NET / C#.
Strong experience with ASP.NET Core, Web API, Entity Framework, and SQL Server.
Hands-on frontend experience with React, Angular, Blazor, or a comparable modern frontend framework.
Ability to build fullstack features from database and backend logic through API design and frontend implementation.
Experience integrating frontend applications with REST APIs and debugging client-server issues.
Hands-on experience with Microsoft Azure.
Experience with CI/CD pipelines and Git.
Experience with Docker and Kubernetes.
Strong understanding of SDLC, SOLID, and design patterns.
Experience with unit testing frameworks such as xUnit, NUnit, or MSTest.
Ability to debug and resolve complex issues across the full application stack.
Strong communication skills and ability to work closely with cross-functional teams.
Nice to Have
Strong experience with React.
Experience with messaging systems such as RabbitMQ, Kafka, or Azure Service Bus.
Familiarity with NoSQL databases such as Cosmos DB or MongoDB.
Azure certifications.
Experience in LMS, edtech, legal-tech, fintech, or data-heavy platforms.
Experience working with AI-assisted systems, AI/ML integrations, or data-driven product features.
What Matters for This Role
Ownership mindset
— ability to take responsibility for features and systems end-to-end.
Strong backend engineering foundation combined with practical frontend delivery skills.
Comfort working in ambiguous, fast-moving environments.
Strong engineering judgment and pragmatic decision-making.
Ability to collaborate across backend, frontend, cloud, product, and AI/ML teams.