Location: Lviv, UkraineAbout SCIMUSSCIMUS is a software company providing a full range of services in the software development lifecycle. Our team has successfully delivered projects in various domains, including SaaS, e-commerce, career & education, healthcare, banking, telecommunications, and more.We are a small but dynamic and ambitious team where ideas, creativity, and initiative are highly valued and supported. We foster a friendly and open atmosphere, free from unnecessary bureaucracy, where collaboration and a good sense of humor thrive.RequirementsBe part of the Support Team, maintaining and enhancing various applications. Quickly address customer requests and resolve system issues. Develop and maintain scalable and reliable backend applications using Node.js (Express). Build and optimize RESTful APIs for integrations with third-party platforms. Work on frontend applications using React and Next.js, improving user experience. Manage and optimize databases (MongoDB with Mongoose, MySQL with Sequelize). Troubleshoot and fix performance, security, and scalability issues. Collaborate with the team to implement new features and process improvements. Maintain Git repositories, ensuring clean and structured code. Experience & Skills2+ years of experience in full-stack development. Strong proficiency in Node.js (Express) for backend development. Experience with React and Next.js for frontend development. Good knowledge of MongoDB (Mongoose) and MySQL (Sequelize). Experience developing RESTful APIs and working with third-party integrations. Familiarity with version control (Git, GitHub) and CI/CD pipelines. Understanding of HTTP request flow and client-server architecture. Strong problem-solving and troubleshooting skills. English level: A2-B1 (basic to intermediate for effective team communication). Nice To HaveExperience with server-side rendering (SSR) and static site generation (SSG) in Next.js. Knowledge of GraphQL APIs and microservices architecture. Experience with Docker and containerized deployments. Familiarity with cloud platforms (AWS, GCP, or Azure). Exposure to eCommerce applications or SaaS platforms. What We OfferYou can fully realize your potential in a supportive environment where your experience is valued. We believe in continuous learning and development - you’ll have access to an office library, weekly tech talks, and English classes compensation; If you love sharing knowledge, we’ll fully support you! 20 paid vacation days; A team with a great sense of humor, where creativity and initiative are encouraged; Regular team events, including Friday pizza parties More About SCIMUS Company site: https://thescimus.com Company profile on DOU: https://jobs.dou.ua/companies/scimus-solution/ If you want to grow, contribute, and work in a friendly, creative, and ambitious team, we’d love to hear from you!