Micro-services architecture to integrate heterogeneous nodes for digital feed generation

A method of presenting opportunities from third-party applications, comprising:

• identifying, by a data processing system comprising one or more processors via an interface of the data processing system, a third-party application of a plurality of third-party applications configured with application programming interfaces (“APIs”) compatible with the interface of the data processing system;
• transmitting, by the data processing system to the third-party application, a query constructed based on a template that is compatible with an API of the third-party application;
• receiving, by the data processing system responsive to the query, a response from the third-party application comprising an opportunity event and a participant profile object, the participant profile object being linked with the participant object and generated in response to importing participant information from a third-party administrator device;
• selecting, by the data processing system, a participant object that satisfies one or more parameters associated with the opportunity event;
• and
• providing, by the data processing system to a computing device linked with the participant object, an indication of the opportunity event.