Not getting feedback from the employer

Gaining visibility in the workplace is important, which is why you need to make sure people know your name and what you are doing. So a manager who hides your existence from the rest of the company can be really bad for your career. Piercing that veil might require that you do some things to make sure people notice your accomplishments:

• Make sure your work has your name on it. Whenever you create a document, presentation or other work artifact, make sure it mentions you as the author.
• Don't be afraid of sending emails to people directly, even those who are a level higher in the company hierarchy. Don't communicate with the rest of the company solely through your manager. When you are asked to do something, find out who you are doing it for and communicate with them directly (CC your manager so they don't feel out of the loop). Should someone ask you to stop, tell them you wanted to save time by making sure the information goes to the people it concerns as soon as possible.
• Make sure you are sitting in meetings which concern your work. Tell those people who organize them that you will take part because you might have something important to contribute. Also don't be afraid of inviting people to a meeting yourself from time to time when there is something important to discuss.
• Use such meetings to present your work results in person. When you don't yet know how to do good slideshows and how to present them well in person, learn it.

This can be a very demotivating and complex situation, as a former manager who was a new manager once and knowing that most workplaces do not have formal New Manager Training and often Start-ups have not invested the up front time in setting up a proper HR system or outlined expectations as a manager I would suggest the following to be sure you create visibility for your work and to set expectations with your Manager:

1. Set reoccuring 1-1 sessions with your Manager (if you feel the need, cc that persons manager as optional) -- Be sure to set the expectations of the 1-1s and send an agenda for the session -- Create a 1-1 Doc, o 15-5 to track notes and feedback; if your company uses Confluence they have great templates
2. Track your work -- if your company uses Jira, Trello, Basecamp etc. begin outlining and tracking your work. Provide highlevel information (Problem, Scope, Goal, Collaborators). -- The main point is visibility not only for your manger but mostly for others in the company. If your company doesn't have a platform - signup for free and share your link with others! (now you have taken an initiate to improve communication company wide! ;)
3. Chat with your higher ups to understand not only what they expect from you but what they expect from your manager and how they would like to see communication handled.

Good Luck!