Senior Fullstack Developer

Summary

Join Zelh, a rapidly growing outsourcing company dedicated to providing high-quality services and fostering strong relationships. We are seeking a talented backend engineer to lead the design and development of our client's API-first architecture. This role requires expertise in TypeScript/JavaScript, database schema design, and technical leadership. You will be responsible for building scalable data models, resolving technical debt, and mentoring junior engineers. The position offers flexible working hours, a remote/hybrid work model, and a comprehensive benefits package including paid time off and English classes.

Requirements

• 6+ years of backend development with expert TypeScript/JavaScript proficiency
• Proven experience with API-first architectures, core business object models, and database schema design
• Deep understanding of authentication, authorization, and role-based access control
• Demonstrated technical leadership, including high-impact decision-making, code review, mentorship, and technical debt reduction

Responsibilities

• Lead Stripe-like API-first architecture design, establish standards, and build scalable core business data models
• Resolve critical technical debt, transform service request workflows, and implement robust access patterns
• Design and optimize database schemas for scalability and performance
• Mentor junior engineers, establish best practices, and lead technical discussions
• Ensure system reliability and performance through robust error handling, monitoring, and comprehensive testing

Preferred Qualifications

Logistics experience a plus, but focus on strong engineering

Benefits

• Working hours: flexible
• Working mode – remote/hybrid
• 20 days of PTO, 7 days of National Holidays and 3 sick leaves
• English classes
• Paid taxi after 10 PM