A full-stack developer works across the frontend and backend of an application, from the user interface to server logic and the database. Small teams often hire one to take a feature from idea to production without hand-offs.
An API (application programming interface) is a defined contract that lets one piece of software request data or actions from another. It hides internal details behind agreed operations, inputs and responses.
A minimum viable product (MVP) is the smallest version of a product that real users can use and that tests the most important assumption about it. It aims to learn quickly with the least effort.
A backend developer builds the server-side systems that store data, apply business rules and serve applications through APIs. Hiring one is how a team secures correctness, security and room to grow in the layer users never see.
A frontend developer builds the parts of a website or web app that people see and use in the browser, turning designs into fast, accessible interfaces. Teams usually bring one in when the interface is how customers judge the product.
A software engineer designs, builds, tests and maintains software systems using engineering discipline. The title spans specialisms from user interfaces and server code to data and machine learning, so hiring well starts with naming the one you need.
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