Senior Fullstack Engineer (Node.js/React)

TL;DR

Senior Fullstack Engineer (Node.js/React/GraphQL): Design, implement, and maintain fullstack features for high-performance customer-centric experiences on the B2B diamond and gemstone marketplace platform with an accent on scalability, reliability, and security. Focus on building intuitive frontend interfaces, robust backend systems, and resolving complex technical issues.

Location: Barcelona, remote-first

Company

Leading B2B diamond and gemstone marketplace connecting jewelry retailers and suppliers globally with an award-winning platform.

What you will do

• Design, implement, and maintain fullstack features ensuring scalability, reliability, and security.
• Build and iterate on fast, accessible frontend interfaces.
• Collaborate with product managers, architects, and stakeholders to define requirements and translate business needs into solutions.
• Debug complex issues and provide support to teams and customers.
• Mentor junior developers and improve engineering quality.
• Participate in discussions to enhance customer experience.

Requirements

• 5+ years in fullstack development with strong Node.js proficiency.
• Solid frontend experience with React.
• At least 2 years with GraphQL.
• 4+ years with relational databases like PostgreSQL.
• Proficient in TDD and writing high-quality code.
• B.S. or M.S. in Computer Science or related field.

Culture & Benefits

• Remote-first team with flexible working hours.
• Low-hierarchy, vibrant company culture.
• Unlimited holiday allowance.
• Opportunities for growth, learning, and system design experience on AWS.
• Work in a rapidly growing company with intellectually challenging tasks.