Senior Full Stack Engineer (.NET + React)

Entrilia – Kyiv, Ukraine / Warsaw, Poland

About the Job

Entrilia is a fast-growing invest-tech company building next-generation software for Private Equity, Venture Capital, and Fund Administrators.

We’re looking for a Senior Full Stack Engineer (.NET + React) to join our engineering team. In this role, you’ll design and implement scalable features across the stack, help evolve our platform architecture, and deliver best-in-class user experiences for our clients.

You’ll collaborate closely with product managers, designers, and other engineers to deliver impactful solutions that make complex financial operations seamless. We value engineers who take initiative, think beyond code, and drive meaningful product outcomes.

What You’ll Do

• Design, develop, and enhance Entrilia’s core platform using .NET Core, C#, and React
• Take ownership of end-to-end feature development—from ideation and design through implementation, testing, and deployment
• Build and integrate backend services hosted in Azure, using both SQL Server and MongoDB
• Collaborate with product managers and clients to translate business requirements into technical solutions
• Ensure scalability, performance, and maintainability across frontend and backend systems
• Participate in architectural discussions and contribute to engineering best practices
• Conduct code reviews, automate testing, manage releases, and maintain CI/CD pipelines as part of full development ownership
• Contribute to Entrilia’s AI efforts, developing features and workflows that leverage LLMs and intelligent automation for fund operations and analytics
• Continuously improve code quality, observability, and system reliability

You, Ideally

• 5+ years of professional experience with .NET Core and C#
• Solid experience in single-page application development in React & TypeScript (state management, hooks, react-router, vitest/jest)
• Experience building and integrating RESTful APIs and working with Azure cloud services
• Proficiency with both SQL and NoSQL databases (SQL Server, MongoDB)
• Understanding of CI/CD processes and hands-on experience with automated testing and deployment
• Excellent problem-solving, debugging, and analytical skills
• Strong communication skills and the ability to collaborate in a cross-functional team
• Passionate about clean code, scalability, and delivering high-quality user experiences
• Upper-Intermediate English or higher

What to Expect from Us

• Competitive compensation based on experience and expertise
• Unlimited vacation, with a recommended minimum of 4 weeks per year
• All necessary equipment to perform at your best
• Support for continuous learning, certifications, and professional development
• A motivated and supportive team that values humor, transparency, and direct communication
• A culture of autonomy, ownership, and fast decision-making
• Interesting technical challenges, with the freedom to innovate and make a real impact

Why Entrilia

At Entrilia, you’ll work with a highly skilled, motivated team using modern technologies to solve complex challenges in Private Equity and fund management. You’ll have the opportunity to drive AI-powered innovation, take ownership of impactful projects, and help redefine how investment firms operate. We value initiative, craftsmanship, and teamwork—and we’d love for you to grow with us.