A leading software innovation company is seeking a Senior Backend Engineer in San Miguel de Tucumán, Argentina. This role involves designing and optimizing multi-threaded systems, transforming legacy workflows into scalable architectures using advanced C#, SQL, and AWS skills. Idóneo candidates will have over four years of experience, strong problem-solving abilities, and a proven track record in performance tuning and application profiling. Competitive compensation package and flexible working options are offered.