Senior Full-Stack Engineer (Angular & C#/.NET)

Description About the Role We are looking for a talented and experienced Senior Full-Stack Engineer to join our R&D team at Colmex, a company operating in the dynamic financial markets industry. This is an opportunity to take a meaningful role in a growing technological environment, work on challenging projects, and contribute to the evolution of our digital solutions. We are looking for a hands-on engineer with strong expertise in both frontend and backend development, who thrives on technical challenges, takes initiative, and enjoys building scalable, high-quality solutions. Key Responsibilities Design, develop, and maintain scalable, high-performance Angular applications. Build responsive, user-friendly interfaces for desktop and mobile devices. Develop and maintain backend services and REST APIs using C# and ASP.NET Core. Independently deliver end-to-end features across frontend, backend, API integrations, and automated testing. Collaborate with R&D team members to design and deliver reliable, maintainable solutions. Take ownership of features from initial requirements through production delivery. Contribute to technical decisions, code quality, and continuous improvement. Requirements Requirements 5+ years of professional software development experience, with strong hands-on expertise in Angular and TypeScript. Strong hands-on experience with C#, ASP.NET Core, and REST API development. Proven ability to independently design, develop, and deliver features across both frontend and backend. Strong knowledge of HTML, CSS, responsive design, frontend architecture, and performance optimization. Experience working with relational databases and SQL. Solid understanding of authentication, authorization, and secure API development. Strong problem-solving, debugging, and analytical skills. High level of independence, accountability, and ownership. Excellent communication and collaboration skills. Advantages B.Sc. in Computer Science, Software Engineering, or a related field. Experience with Docker, CI/CD pipelines, and GitHub Actions. Experience using AI-assisted development tools such as GitHub Copilot, Cursor, Claude Code, or similar. Experience in FinTech, trading platforms, or payment systems.