Senior Full Stack Developer

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

Senior Fullstack Developer We’re currently looking for a Senior Fullstack Developer to join our development team engaged in delivering a key global platform for Worldpanel by Numerator – a key element of our business strategy. One of our continuous goals is to secure a smooth and efficient transition to a more digitally focused cloud environment. In this role, you will be responsible for supporting its delivery, implementing best engineering practices, and mentoring more junior team members. This is also a great opportunity to work with the latest tech and modern software engineering practices. If you're willing to go beyond the obvious, using intelligence, passion and creativity to inspire new thinking and shape the world we live in.

In this role you will:

• Be responsible for the delivery of tested, high quality code across both 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
• Work closely with BAs and Senior Developers to consistently achieve sprint goals
• Assist in estimation of sprint-by-sprint stories and tasks
• Pro-actively take a responsible approach to product delivery

Requirements:

• Strong C# / .NET skills (.NET 8+), including ASP.NET Core (Web API + MVC)
• Experience with frontend development using TypeScript, React 19, and modern tooling (Vite, Redux Toolkit, React Hook Form, Zod)
• Proficiency with relational databases — SQL Server and/or PostgreSQL — and Entity Framework Core
• Experience working with Microsoft Azure Cloud services (App Service, Key Vault, Blob Storage, Application Insights, Azure Functions, Data Factory, Databricks, Redis Cache)
• Experience with Microsoft Entra ID / Azure AD (MSAL, JWT)
• Experience with Agile methodologies (Scrum/Kanban)