Job Summary: A Senior Back-End Developer is responsible for designing, developing, and maintaining high-performance backend systems. This position plays a key role in contributing to the definition of architecture, improving system efficiency, and ensuring seamless integrations. This role requires a strong technical background, hands-on experience with backend development technologies, and the ability to solve complex problems. A Senior Back-End Developer will collaborate closely with cross-functional teams, mentor junior developers, and contribute to the continuous improvement of best practices, system reliability, and code quality. Duties and Responsibilities: Development of Backend Solutions Implement and maintain high-quality backend components, ensuring they meet performance, security, and scalability requirements. Code Quality & Standards: Follow production, productivity, and quality standards to maintain high coding excellence. Write clean, maintainable, and well-documented code. Contribution to Architecture Provide input on architectural decisions, collaborating with the development team to design sustainable and efficient solutions. Error Monitoring and Issue Resolution Continuously monitor system performance and proactively identify potential errors. Implement necessary corrections in a timely manner to maintain system stability and reliability. Technical Documentation Prepare and maintain clear, high-quality technical documentation as per company standards to support development, maintenance, and knowledge sharing. Ensure documentation is accessible to relevant internal and external stakeholders. Communicate essential technical information effectively to ensure smooth collaboration. Mentorship and Collaboration Support junior developers through code reviews, knowledge sharing, and best practices adoption. Cooperate with team members and other departments to align development efforts with business needs. Education and Experience: At least 5 years of relevant work experience. Must have AI experience - developing prompts. Must have at least 3 years of enterprise-level experience specializing in the architecture of tools utilizing low-code or internal application development platforms, such as Superblocks, Retool, Appsmith, Palantir Foundry, Lovable, or other AI rapid development tools. Strong proficiency in Kotlin, Java / Spring. Bachelor's or master's degree in CS, Engineering, or equivalent practical experience. Experience with relational and non-relational databases (MySQL, MongoDB, or similar). Experience with CI/CD tools, repositories, and build processes. Knowledge of Agile methodologies Strong design and problem-solving skills, with a focus on engineering excellence. Good knowledge of the software development lifecycle (SDLC) and operational best practices. Excellent written and verbal communication skills. Nice to Have: Previous experience with HR and/or Payroll software Payroll-related knowledge