Senior Full-Stack Developer, TSCM-43171, TSCM-43174

ELEKS Software Engineering and Development Office is looking for a Senior Full-Stack (Node.js and React) Developer in Poland or Croatia.
About ProjectOur customer is a global life sciences & healthcare organization whose mission is to improve the quality of people’s lives worldwide. Their digital products directly support life-saving therapies and healthcare research used by millions of patients and their families.This company works with leading pharmaceutical, biotech, and government partners and plays a critical role in accelerating the delivery of new treatments to the market.I’m recruiting for a Senior Full-Stack (Node.js + React) role for company from Ireland. It`s a modern web systems that support life-saving therapies. Long-term remote role. Tech Stack: React, Node.js, Typescript, Next.js, Fastify.

REQUIREMENTS

• 5+ years of professional experience in software engineering
• A strong interest in AI and hands-on daily use of AI tools is required.
• Strong hands-on experience with Node.js and React in building and maintaining production-grade applications
• Experience with Fastify is a strong advantage
• Excellent knowledge of JavaScript, HTML, and CSS (experience with SCSS/LESS is a plus)
• Proven experience in designing and consuming RESTful APIs (GraphQL knowledge is a plus)
• Solid understanding of cloud-native development, CI/CD pipelines, and containerization (Docker, Kubernetes)
• Strong grasp of software architecture, SOLID principles, and security best practices
• Experience working with databases such as PostgreSQL, MongoDB, and Redis
• Familiarity with monitoring and observability tools (Prometheus, OpenTelemetry) – nice to have
• Exposure to AI/ML tools (e.g., GitHub Copilot, OpenAI API) is a plus
• Strong problem-solving skills with a proactive ownership mindset
• Upper-intermediate or higher level of English (written and spoken)
• Willingness to travel occasionally to Ireland

RESPONSIBILITIES

• Design, develop, and maintain reliable software in line with technical requirements, focusing on performance and availability
• Analyze requirements, review designs, and estimate user stories following project methodology (Agile, Waterfall, etc)
• Proactively propose code refactoring and optimization improvements according to the best software development practices and coding standards
• Help maintain and improve high-quality standards within the developer community by sharing knowledge, conducting tech talks, and participating in the internal promotion verification process
• Stay up-to-date with modern technology and obtain professional certifications
• Support less experienced developers by providing training, distributing, and monitoring tasks