SDE III, Backend

Position Overview

As an SDE III – Backend, you will be a highly hands-on individual contributor responsible for designing, developing, and scaling backend systems that power ZoTok's products.

You will work on complex technical challenges involving microservices, APIs, databases, cloud infrastructure, and distributed systems, while contributing to architectural decisions and engineering best practices.

This role is ideal for someone who enjoys solving challenging engineering problems, owning systems end-to-end, and building production-grade software at scale.

Key Responsibilities

• Design, develop, and maintain scalable, high-performance backend services and APIs.
• Take end-to-end ownership of complex backend modules and technical initiatives.
• Design and implement RESTful APIs and Microservices architecture.
• Build backend applications using Node.js, LoopBack, and/or NestJS.
• Design and optimize MySQL/RDBMS schemas, queries, and database architecture.
• Build, deploy, and optimize applications using AWS services such as Lambda and ECS.
• Develop highly reliable and fault-tolerant systems capable of handling scale and growing workloads.
• Participate in system design and architecture discussions and contribute to key technical decisions.
• Identify performance bottlenecks and drive improvements in latency, scalability, reliability, and resource utilization.
• Troubleshoot complex production issues and implement robust long-term solutions.
• Write clean, maintainable, well-tested, and optimized code following engineering best practices.
• Conduct code reviews and contribute to maintaining high engineering standards.
• Collaborate closely with Product, Frontend, QA, DevOps, and other stakeholders to deliver solutions end-to-end.
• Evaluate and adopt appropriate technologies, tools, and engineering practices to improve system performance and development efficiency.
• Contribute to AI/ML and GenAI-powered capabilities where applicable.