Senior Backend Engineer (Business-Driven)

About the client: Our client is a fast-growing startup building a digital billboard player system that manages and delivers multimedia content across distributed devices. They are looking for a Senior Backend Engineer with a strong business mindset to work closely with company founders in shaping product direction and translating business needs into scalable technical solutions. This role requires hands-on development experience across backend systems, with the ability to think beyond code and contribute to product and system design decisions. Job Responsibilities: Work closely with founders and stakeholders to understand business goals and user requirements Translate user and business requirements into system architecture, APIs, and data models Design, develop, and maintain backend APIs using NestJS and TypeScript Design and maintain relational databases using MariaDB (using Knex SQL Builder) Manage media asset workflows using AWS S3 Deploy and maintain applications using Docker on AWS EC2 Ensure system performance, reliability, and security Write clean, maintainable, and well-structured code Participate in technical decision-making and system improvement initiatives Requirements: Minimum 5 years of experience as a Backend Engineer or similar role Strong proficiency in TypeScript Solid experience with NestJS Experience building and consuming RESTful APIs Strong SQL knowledge and experience with MariaDB or equivalent databases (using Knex SQL Builder) Hands-on experience with Docker and cloud deployment (AWS preferred) Ability to work independently and handle ambiguous requirements Strong communication skills and ability to work closely with non-technical stakeholders Business-oriented mindset with focus on solving real-world problems Optional / Good to Have (Frontend Skills): Experience with React and Next.js Experience building frontend interfaces that consume REST APIs Familiarity with modern frontend tooling and frameworks Basic understanding of responsive UI and frontend performance