Do Son 
Front end development is a very popular field, so naturally, there are going to be a ton of professionals to choose from when you are looking to have front end work done. Naturally, if there is a lot of competition, then there are probably some lackluster front-end developers out there.
Hopefully, I will break down a few of the things to look for so you do not run into any of them and only work with the best developers for your project! A front-end agency can be a big investment, so you should be working with absolute professionals in your field.
Proof of Work History
Nowadays, it seems like there are a lot of agencies that are just not legit. Even if they are, they are wildly inexperienced. Inexperience is not a bad thing, but make sure that they are at least charging clients like they are not experienced.
You can tell if a front-end development agency is legit if they can show you some of their past projects and if they were successful in the end. Great places to check out an agency’s work is on their website or on review sites. Their work history goes hand in hand with their reputation, and make sure it is a good one.
Agencies are too much of an investment for your project to not have great feedback and experience.
Communication
Arguably the most important aspect to consider is how great their communication is. Front-end development is so dependent on a client having good communication to the agency and vice versa. Bad communication is how bad relationships are.
In any review of a company, I would value their communication at the top of your list because without it the project is at a massive disadvantage. Another great way to tell if an agency has great communication is to have a few conversations with them and see how their response time is.
Along with expertise, there needs to always be a point of contact in a timely manner with an agency. How else will you elaborate on the project and get exactly what you want when you want it?
Authority in Your Space
Front-end development is a pretty broad niche. Some agencies might not even offer what others do. For instance, one agency might not have any experience or knowledge of UX prototyping.
If your job involves UX prototyping, then you must consider agencies that also offer it. Using one agency for everything and then needing to hire another for other services you need is a great way to mess up your process.
Most business owners would rather use an agency that is an expert at everything that they need, so the project is as seamless and not as complicated as possible. Make sure that the agency is an authority in all aspects of your job with front-end development.
Please share this post if you found it useful and think that someone else could benefit from it!