Middle Full-Stack Engineer (.Net)

About the Role

We’re looking for a Middle Full-Stack Engineer (.NET) to join the Integra team. In this role, you’ll help build and improve payment-related experiences and supporting systems, with a stronger emphasis on frontend development and meaningful backend contribution where needed for integrations and service collaboration.

This is a hands-on engineering role for someone with solid production experience who is comfortable working across the stack, writing automated tests, and contributing in an iterative team environment. You’ll work on important product and platform capabilities connected to payments, integrations, and user experience improvements.

What You’ll Do

• Design, build, and improve frontend experiences that support payment flows and customer interactions (React)
• Contribute to backend development for integrations, service coordination, and enhancements across existing systems using C# and .NET
• Write, maintain, and improve automated tests to support reliable, scalable delivery
• Work with internal systems and third-party providers to implement and support payment-related integrations
• Collaborate with engineers and cross-functional partners in an iterative development environment to deliver product and platform improvements
• Work with complex SQL queries and data flows in a high-load environment where quality and performance matter.
• Help identify and implement technical improvements that strengthen payment experience, system reliability, and operational efficiency
• Collaborate with teammates to understand business needs and translate them into reliable technical solutions.
• Use AI-assisted development tools to support engineering productivity and delivery.
• Participate in code reviews and contribute to strong engineering standards across the team.

What We’re Looking For

• Minimum of 3 years of professional experience in software engineering, with a frontend focus
• Proficiency in .NET frameworks, C#, and data access technologies.
• Proficiency in front-end technologies such as HTML5, CSS3, JavaScript, TypeScript and React.
• Knowledge of MS SQL, including working with more complex queries and performance-sensitive data scenarios.
• Familiarity with writing unit and integration tests (e.g., using Jest, NUnit, Playwright, React Testing Library, or similar frameworks).
• Interest in learning the payments domain and developing an understanding of the business logic behind payment flows.
• Experience with LLMs / Generative AI tools (e.g., OpenAI, Copilot, Cursor).
• Upper-intermediate level of English or higher.

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