Senior Software Engineer (C#/React)

Jahnel Group’s mission is to provide the absolute best environment for software creators to pursue their passion by connecting them with great clients doing meaningful work. We get to build some of the most complex and compelling applications for our clients located across the country.

We’re a fast-growing INC 5000 recognized company, yet we still work as a very close-knit team (100+ employees). We’re growing like crazy, and if you’re looking for the next place to call home, hit us up for a beer or coffee.

Who We're Looking For

We’re looking for a Senior Software Engineer with strong C# backend experience and modern frontend skills to join a high-performing team. This role is ideal for someone who enjoys working across the stack, building scalable APIs, and contributing to high-quality user experiences.

Primary Responsibilities

• Design and implement backend services using C#
• Build and maintain frontend applications using React (Vite/Vitest)
• Develop and maintain APIs for scalable, high-performance applications
• Implement monitoring and observability across systems
• Collaborate with engineers through pair programming and code reviews
• Contribute to automated testing strategies and improve test coverage
• Participate in architecture discussions and system design decisions
• Ensure code quality, performance, and reliability across the platform

Some Must-Haves:

• 5+ years of professional software engineering experience
• Strong experience with C# backend development
• Experience building frontend applications with React
• Familiarity with modern tooling such as Vite/Vitest
• Experience designing and consuming APIs
• Strong understanding of automated testing practices
• Experience with monitoring and observability in production systems
• Comfortable working in collaborative environments (pair programming)
• Strong communication skills and ability to work remotely

Nice to Have:

• Experience with AI agents or code assistance tools
• Familiarity with CI/CD pipelines (Azure DevOps, YAML)
• Experience with Azure B2C for authentication
• Experience with Cosmos DB or other NoSQL databases
• Familiarity with design tokens and scalable design systems
• Experience with micro frontends
• Exposure to event-driven architectures (Service Bus, messaging systems)

Where We're Looking For It:

Other Information

The work hours will be approximately 9:00 am to 5:00 pm EST. We work for security-conscious clients, thus background checks will be required.

Position available immediately.