Senior Full-Stack Engineer (Remote Contractor in Mexico)

Research Solutions, Inc. (NASDAQ: RSSS) provides cloud-based technologies to streamline the process of accessing, managing, and creating intellectual property. Since its founding, the company has been a pioneer in developing solutions to serve researchers. Today, more than 70 percent of the top pharmaceutical companies, prestigious universities, and emerging businesses rely on our family of products, powered by AI and NLP technologies, to support the innovation process from end to end with the most comprehensive information and knowledge tools on the market. For more information and details, please visit www.researchsolutions.com . POSITION SUMMARY: We are seeking a Senior Full-Stack Engineer (+8 years experience) with a strong backend focus who thrives in a fast-paced, remote environment. This role is primarily backend-oriented (~60–70%), focused on designing, building, and optimizing scalable services, APIs, and data systems. The ideal candidate has deep expertise in .NET/C# and Microsoft SQL Server, along with experience in AWS and performance optimization. Frontend experience with React or Vue is expected, but secondary. Experience with Elasticsearch is a plus. The role also includes a meaningful operational component (~20–30%), supporting production systems, troubleshooting issues, and improving system reliability. Strong ownership, problem-solving skills, and the ability to collaborate effectively with Product, UI/UX, and Operations teams are essential. Location & Work Status This is a remote, full-time contractor position based in Mexico . As an independent contractor, you will be responsible for invoicing for your services. You'll work closely with our team across departments, participating in meetings and contributing to company initiatives. ESSENTIAL RESPONSIBILITIES, DUTIES, AND FUNCTIONS: • Continuously improve the performance, reliability, and scalability of the platform, focusing on enhancing throughput and reducing latency. • Implement new features, improvements, and fixes to the software, ensuring its accuracy, reliability, and user experience. • Maintain and Improve Web Applications. Address bugs and enhance functionality to improve user interaction and overall performance. • Contribute to infrastructure improvements and DevOps tasks to support scaling, security hardening, and system resilience. REQUIREMENTS: • Strong command of written and spoken English • 8+ years of hands-on experience in full stack software development • Self-starter mentality: Must be proactive and willing to dive deep into the code to troubleshoot, optimize, and build solutions independently. • Ownership of work: Ability to take full responsibility for tasks and projects, ensuring that outcomes align with business objectives. • Outcomes-based approach: Capable of focusing on delivering results in a fast-paced environment with rapidly evolving requirements. • Adaptability: Comfortable working in an agile environment where priorities and requirements can shift quickly. • Proficient knowledge in .NET/C# and Microsoft SQL Server • Proven expertise in JavaScript (ES5+), React/Vue • Experience building and deploying applications in AWS environments • Strong understanding of RESTful APIs, and microservices architecture • Familiarity with DevOps practices and tools (CI/CD, version control, etc.) Good to have: • Familiarity with Python 3+ and NodeJS • Working knowledge of Elasticsearch • Bachelor’s degree in Computer Science, Software Engineering, or a related field. Or equivalent work experience is also considered. Master’s degree in a related field is a plus but not required.