Middle Full Stack Engineer (Frontend Focus)

Job description

Company Description Are you a Middle Full Stack Engineer passionate about building high-performance, scalable systems? Join our team at Sigma Software, where we create cutting-edge solutions for a leading online marketplace in the pet products domain. This is an opportunity to work on a high-load, distributed platform that connects millions of pet owners with suppliers worldwide. The role offers flexibility in work format — remote, onsite, or hybrid — to suit your lifestyle. At Sigma Software, we value innovation, quality, and teamwork. You will be part of a collaborative environment with access to challenging projects, modern technologies, and professional growth opportunities. CUSTOMER Our client is a leading online marketplace specializing in pet products. The platform connects pet owners with suppliers offering food, accessories, and healthcare products. Known for its intuitive interface and strong logistics network, the company is committed to enhancing the pet care experience through technology. PROJECT We are developing a high-performance, scalable customer-related platform capable of processing substantial data volumes with low latency and fault tolerance. The solution leverages Java, Spring, AWS services, and React to deliver a reliable and engaging user experience for pet owners and suppliers. Job Description Design, develop, and implement large-scale distributed systems to ensure scalability, low latency, and fault tolerance Develop and maintain front-end features using React JS, ensuring responsiveness and usability Implement APIs and event-driven solutions to meet system requirements and enhance functionality Create and execute unit tests, API tests, regression tests, and performance tests to ensure reliability and efficiency Optimize solutions for scalability, reliability, and high performance across both front-end and back-end components Collaborate closely with cross-functional teams to address and resolve production incidents promptly Participate in architectural discussions and contribute to technical documentation Qualifications At least 4 years of experience in software development with JavaScript and object-oriented programming Strong experience with frontend frameworks such as React JS Working experience with Java in production environments Strong understanding of OOP principles, design patterns, algorithms, and data structures Experience in building multi-tier web applications and REST APIs Hands-on experience in Linux/Unix environments Practical knowledge of cloud platforms (AWS, Google Cloud, or Azure) Familiarity with relational and NoSQL databases (HBase, Cassandra, MongoDB, Redshift) Bachelor’s or Master’s degree in Computer Science, Engineering, or related field WILL BE A PLUS Experience with microservices architecture Knowledge of CI/CD pipelines and DevOps practices Familiarity with containerization tools (Docker, Kubernetes) Additional Information PERSONAL PROFILE Strong problem-solving skills and analytical thinking Ability to work effectively in a team and communicate clearly Passion for building high-quality, scalable software solutions