Senior Fullstack Engineer: Cloud, APIs & React

Numerator; Indiana (PA); On-site; USD 110,000 - 160,000; Full time

Job summary

Numerator seeks a Senior Fullstack Developer to join our development team, delivering a key global platform for Worldpanel. You will work on a cloud-first transition, implement best practices, and mentor juniors while using modern software engineering approaches.

You will deliver frontend and backend code, build RESTful APIs with ASP.NET Core, and create responsive React UIs. The role emphasizes collaboration, estimation, and proactive product delivery.

Qualifications

• Strong C# / .NET skills (including ASP.NET Core).
• Frontend development with TypeScript and React.
• Experience with relational databases (SQL Server or PostgreSQL) and EF Core.
• Experience with Microsoft Azure Cloud services and Azure AD.
• Familiarity with Agile methodologies (Scrum/Kanban).

Responsibilities

• Deliver tested, high-quality code across frontend and backend.
• Design and build RESTful APIs and MVC web applications using .NET and ASP.NET Core.
• Develop modern, responsive frontend experiences using React and TypeScript.
• Build and maintain automation test suites within Azure DevOps.
• Collaborate with BAs and Senior Developers to achieve sprint goals.
• Assist in estimation of sprint-by-sprint stories and tasks.

Skills

C# / .NET

TypeScript / React

Azure Cloud

Agile / Scrum

Tools

React

TypeScript

Vite

Redux Toolkit

React Hook Form

Zod

SQL Server / PostgreSQL

Entity Framework Core

Azure AD / MSAL

ASP.NET Core

Job description

Numerator seeks a Senior Fullstack Developer to join our development team, delivering a key global platform for Worldpanel. You will work on a cloud-first transition, implement best practices, and mentor juniors while using modern software engineering approaches.

You will deliver frontend and backend code, build RESTful APIs with ASP.NET Core, and create responsive React UIs. The role emphasizes collaboration, estimation, and proactive product delivery.