Full-Stack Developer for BA's client (B2B contract)

Baltic Amadeus is a technology partner helping organisations build and scale their IT solutions. With a team of 300+ IT professionals, we turn complexity into systems that actually work.

Our expertise spans the full IT lifecycle, from IT consulting and custom software development to mobile app development, mobile banking, cyber security, including penetration testing, and web portal development. We create internal systems and customer-facing platforms, including mobile applications, self-service, eCommerce, and banking solutions.

Our team has proven experience in industries where reliability and compliance are critical, such as banking and finance, public sector, telecommunications, logistics, and insurance.

With 37+ years in the industry, we partner with clients across the globe, including Fortune 500 and Forbes Global 2000 companies, helping them achieve measurable business results.

Project/Client: Marketplace

Location: Lithuania

Start Date: ASAP

Language: Lithuanian

Baltic Amadeus client is looking for a Full-Stack Developer to join the team under a B2B (business-to-business) contract with strong expertise in Node.js, React.js, and MySQL. The ideal candidate has hands-on experience building and maintaining scalable applications, working with large-scale datasets and batch/bulk operations. Familiarity with on-premises infrastructure, AI solutions, proxy infrastructure, and web scraping techniques is essential for this role.

Key Responsibilities

• Develop and maintain backend services using Node.js, including handling async processes and Event Loop optimization
• Build and maintain frontend components with React.js, ensuring clean component architecture and efficient state management
• Design, optimize, and manage MySQL databases, including query optimization, indexing, and handling large-scale datasets
• Work with batch/bulk operations involving millions of data records
• Maintain and support on-premises infrastructure environments
• Integrate and work alongside AI solutions within the product ecosystem
• Manage and work with proxy infrastructure setups
• Implement and maintain web scraping pipelines and solutions
  
  

Must-Have Requirements

• Proven experience with Node.js — deep understanding of async processes and the Event Loop
• Strong proficiency in React.js — component architecture and state management
• Solid MySQL skills — query optimization, indexing, and experience with large volumes of data
• Hands-on experience with million-record datasets and batch/bulk operations
• Understanding of on-premises infrastructure
• Background in e-commerce or marketplace projects
• Experience working with AI solutions
• Experience with proxy infrastructure
• Web scraping skills and practical knowledge of scraping techniques
  
  

Hourly rate: up to 40 eur/h (Gross). If you have different expectations, please let us know — we are open to discussing compensation based on your skills and experience.