Go & Postgres App Update

I am in need of a skilled developer to help me update an existing application. This application is built using Go and Postgres.

Your responsibilities will primarily include:
- Updating the functionality of the application
- Fixing any existing bugs
- Ensuring the application is performant and scalable

Ideal candidates for this project should possess:
- Proficiency in Go and Postgres
- Experience with software development life cycle
- Ability to work with an existing codebase

Please provide examples of previous similar projects you've worked on.