Sr. Backend Engineer (Golang + MongoDB)

The Mission

We are looking for a heavy-hitting Senior Backend Engineer who thrives at the absolute intersection of distributed systems architecture, high-performance data pipelines, and cutting-edge AI engineering.

This is not a role for someone who simply writes code against a checklist. We are scaling a high-throughput, event-driven ecosystem built primarily on Golang, Node.js, and Kafka , and we need a systems specialist to build scalable services, optimize core data layers, and bring advanced automation features to life. Our systems are robust, scalable, and clean—your job will be to champion further technical improvements, elevate product capabilities, and push our backend limits to support a massive global user base.

If you have a true builder's grit, an obsession with clean code architecture, and love working with modern data frameworks and AI patterns, this role was built for you.

Key Responsibilities

High-Throughput Backend Architecture: Design, optimize, and maintain mission-critical backend microservices utilizing Golang as the primary language, supplemented by Node.js (TypeScript) .

Event-Driven Systems: Evolve our highly event-driven architecture using Kafka to seamlessly handle massive asynchronous workflows and high-volume data streams.

Database Optimization: Manage, scale, and optimize core product data storage layers, focusing heavily on MongoDB and Redis for sub-millisecond data reads and high availability.

Agentic AI & Meta-Prompting: Architect and implement complex AI-powered systems, autonomous agentic workflows, and meta-prompting frameworks that drive core product automation.

API Systems Design: Design, secure, and document robust, clean GraphQL and RESTful APIs capable of serving a global, highly active user base.

Complex Problem Solving: Apply deep logical thinking to solve sophisticated algorithmic, product, or quantitative challenges natively within backend business logic.