"Stalin's knowledgeable and very easy to work with. It's my first time dealing with a chemist directly, and it's also my first time hiring via Upwork as well and Stalin was very patient throughout the process. Hope we can work together again soon!"

"Stalin was extremely patient with me as well as extremely thorough. I was new to the creating formulations so I had a lot of questions and needed a better understanding outside of the formulation process and he was able to take his time with me, answer my questions and share his knowledge in the cosmetic industry. Most importantly, he made himself available at various hours so I did not feel the time difference and was very responsive to my questions. I am really happy with the deliverable and will certainly engage with Stalin again."

"Great Freelancer, excellent communication, delivered on time, on budget, fast, efficient and effective, HIGHLY RECOMMENDED"

"It was a pleasure to work with this gentleman. He is very knowledgeable in this subject matter."

"Excellent knowledge and a very helpful person."

"Stalin was very accommodating and patient with my requests. He made sure to do all the assigned tasks for him. He is excellent when it comes to communicating with his clients ! Very professional! I will surely hire him again!"

"Stalin has provided good quality work and is always available to adapt and provide further input. Delivered to specification. Can recommend Stalin."

"I will hire him again great work"

"I was very happy with the work given to the freelancer. Stalin has good and knowledgeable experience to do a job. I had a formulation requirement and he understood the requirement perfectly."