Senior Backend Software Engineer

About this role

*Opiniion is a resident satisfaction software that partners with property management companies to create better living experiences for their residents. Our platform has helped thousands of property managers collect and act on real-time feedback, improve resident experiences, and enhance their online reputation. Opiniion is committed to exceptional service and innovation, earning recognition as one of America’s fastest-growing private companies. Driven by a forward-thinking team, we’re shaping the future of resident engagement. Our continued growth and commitment to innovation make this an exciting time to be part of our team!*

### POSITION OVERVIEW:

Opiniion is seeking a backend software engineer with strong SQL and Node.js skills. We are migrating from MongoDB to PostgreSQL across a complex Node.js application. We need someone who can own this — not just run scripts, but design the schema, execute a safe migration, and guide us to write better application code on the other side. We also need someone who has experience writing fast, secure, and clean APIs and application code in Node.js. The absolute floor for experience is 5 years.

### RESPONSIBILITIES:

• Write and maintain Node.js API services
• Architect the relational schema from our existing document-based data model
• Design and execute a zero-downtime migration strategy (dual-write, expand-contract, etc.)
• Own DB performance — indexing, query analysis, connection pooling
• Work with Node.js to read, process, and optimize MongoDB and SQL
• Work inside Docker locally and on AWS

### QUALIFICATIONS:

• Have shipped a production NoSQL relational migration, and can walk us through it
• Have a strong background in backend software engineering, and understand relevant computer science fundamentals
• Know PostgreSQL deeply (JSONB, CTEs, window functions, transactions, EXPLAIN ANALYZE)
• Are competent and autonomous at writing Node.js code
• Have used schema migration tooling
• Are comfortable in AWS ...