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SD Solutions at SD Solutions. Location Information: Worldwide. . On behalf of Atlas Invest, SD Solutions is looking for a talented . Senior Full-Stack Developer. (backend-oriented) with a proven track record of building scalable backend systems and APIs. You will play a key role in designing, developing, and maintaining our core backend services, with a focus on performance, reliability, and scalability.. . SD Solutions is a staffing company operating globally. Contact us to get more details about the benefits we offer.. . Responsibilities:. . Design, develop, and maintain backend services using TypeScript, Node.js, and Python. Architect and optimize RESTful APIs and integrate with external/internal systems. Work with PostgreSQL, MongoDB, GraphQL to manage and optimize data models and queries. Implement scalable WebSocket-based communication and message queues (e.g., RabbitMQ, Redis, or similar). Collaborate closely with product, frontend, and data teams to deliver high-quality solutions. Ensure smooth CI/CD . pipelines. and contribute to infrastructure-as-code and deployment strategies. Drive performance tuning, security hardening, and system monitoring for backend services. Troubleshoot complex issues and lead root cause analysis and resolution. Write clean, maintainable, and well-tested code with a strong emphasis on quality and performance. Integrate with AI tools, generate prompts, test & evaluate prompts results will be an advantage. React.js experience will be an advantage. . Requirements:. . 4+ years. of backend development experience, with at least 3 years in . TypeScript/Node.js. Solid experience with . Python. for scripting or service-level backend components. Strong understanding of . PostgreSQL. , . MongoDB,. and . GraphQL. - query optimization, indexing, data modeling. Proficiency with . REST API. design and best practices. Deep knowledge of . WebSocket protocols. and real-time data handling. Experience with . messaging systems/queues. such as RabbitMQ, Kafka, or Redis streams. Familiarity with . CI/CD pipelines. (e.g., GitHub Actions, GitLab CI, Jenkins). Cloud deployment experience (AWS, GCP, or Azure) with emphasis on scalability and availability. Excellent . problem-solving skills,. debugging experience, and systems thinking. Strong communication skills and ability to mentor junior engineers. . About the company:. . Atlas Invest is transforming the bridge loan landscape, seamlessly connecting investors with real estate developers using advanced big data analytics for a personalized investment experience.. . By applying for this position, you agree to the terms outlined in our Privacy Policy. Please take a moment to review our Privacy Policy . https://sd-solutions.breezy.hr/privacy-notice. , and make sure you understand its contents. If you have any questions or concerns regarding our Privacy Policy, please feel free to contact us.. .