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Category: Big Data Reviews

There’s a massive demand for professionals who can extract meaningful insights from the vast data companies have. Build your data skills with courses from leading universities, industry partnerships, & job-ready training with real-world datasets. Want to see the results? Here are some reviews by our past learners who’ve made it big.

Alumni stories

Christian Lopez

Data Scientist - Data Strategy & Governance

Data Scientist - Data Strategy & Governance

Credit One Bank

Data Scientist - Data Strategy & Governance

Data Scientist - Data Strategy & Governance



I am Christian Lopez, a cognitive neuroscience graduate from UC San Diego, equipped with strong problem-solving skills and collaborative abilities. With a keen interest in data science, I’ve honed my expertise in various areas including data acquisition, statistical analysis, and machine learning. Currently serving as a data scientist at a prominent bank in Las Vegas, I embarked on the PGP in Data Engineering-Purdue program offered by Simplilearn to further advance my career and gain hands-on experience in data engineering projects.

My Professional Journey

After completing my bachelor’s degree, I pursued a data science bootcamp online and secured a position as a data analyst at a financial institution. My journey eventually led me to my current role as a data scientist at a bank, where I find immense fulfillment in leveraging data to drive insights and decision-making processes.

Career Impact of Completing the Course

Completing the data engineering program opened up new opportunities and projects in my current role. Additionally, it contributed to a significant salary hike of 10-15%, reflecting the value and impact of the skills acquired through the program.

Gayathri Ramesh

Associate Data Analyst L1

Associate Data Analyst L1

Publicis Sapient

Associate Data Engineer

Associate Data Engineer

Publicis Sapient

As documented by Gayathri Ramesh

I have the zeal to learn different skills to upgrade myself. Once I came across the responsibilities and job requirements of a data analyst, I was driven to learn this skill and make a shift from an EMM Trading Tool Analyst position.

The Journey

I completed my master’s in Electrical Engineering from New York University. Following this, I got an offer letter for an EMM Trading Tool Analyst at SGCIB in 2017. After working here for some time, I felt the need to upgrade myself and learn the skills needed for a data analyst role. For this purpose, I chose the Data Analytics course from Simplilearn. After completing this course, my manager saw the potential in me and helped me shift to the data analyst position in the organisation.

Later I pursued Big Data Hadoop and Spark Developer courses from Simplilearn and got selected to be an Associate Data Engineer at Publicis Sapient.

The Challenges

I was driven to learn data science to upgrade my skills for the role of data analytics when I learned about this domain from my friends and colleagues. Eventually, I wanted to shift to this sector to improve my career prospects. To upskill myself, I started searching for online platforms that offered the best data analytics certification. When I compared the course features of Simplilearn with other platforms, I found Simplilearn to be the best. Therefore, I started my learning. 

Simplilearn Solution

My experience with Simplilearn was great. I faced some issues with the course completion date, and I am thankful the support team extended the course completion deadline, which offered me great flexibility. 

As I was a complete beginner in the chosen course, I was skeptical if I would be able to understand all the concepts. However, the course was well-structured, and the instructors explained every topic in the simplest way. This helped me complete the course with a thorough understanding.

Ney Fred Jimenez Campos.

Systems Analyst

Systems Analyst


System Business Analyst

System Business Analyst

Crux Consultores

As documented by Ney Fred Jimenez Campos.

I am Ney Fred Jimenez Campos, a computer science engineer from The University of Costa Rica, residing in Costa Rica. I have primarily been working for the healthcare sector, with companies focused on leveraging technology and medical products to enhance patient care. In addition to my healthcare experience, I have also worked at the Costa Rica Central Bank, where I conducted manual and automated QA testing for automated server deployment.

Enrollment Decision and Career Goals:

Having a keen curiosity and a strong drive to learn, I am always seeking new challenges and opportunities for personal and professional growth. My expertise lies in various areas, including IT, QA testing, databases, process reports, documentation, and industrial processes for creating and streamlining products within workflows.

Presently, I hold the position of a System Business Analyst at GSK, a prominent Pharmaceutical Manufacturing company, specifically in the contract operations department. I secured this position after successfully completing the Professional Certificate Program In Data Engineering from Simplilearn. In my current role, I am responsible for supporting continuous operations by overseeing data creation, reviewing and generating financial, commercial, and customer bill reports, and ensuring smooth business operations.

Furthermore, I actively contribute to maintaining the operational continuity of SAP business applications. I engage in QA activities, participate in SAP system enhancements, and act as a systems analyst liaison between analysts and other business units or clients. Currently, I am also involved in QA efforts related to the migration of SAP to the Azure cloud, conducting comprehensive test cases to ensure seamless processes.

Jorge Mario Guzman Olaya

Program and Channel Partner Manager

Program and Channel Partner Manager

Smiths Detection

Senior Instructor

Senior Instructor

British Digital LLC

As documented by Jorge Mario Guzmán Olaya

I have over 20 years of experience in data management. I first came across Simplilearn’s courses during the pandemic when I wanted to know more about the tech domain and take advantage of the data science boom.

At that time, I was working with Smith’s Detection as a program and channel partner manager. My job was to recruit and maintain relationships with channel partners and to design commercial strategies. While studying channel partners, I handled a lot of data and wanted to find an effective way to streamline my work. Simplilearn’s Big Data Hadoop & Spark Developer online course helped me accomplish that. 

Upskilling is Part of Career Growth

I started upskilling myself 11 years ago and have continually applied the new skills and knowledge acquired to the job. I believe upskilling is necessary to thrive and grow in one’s career. 

I have taken several other courses with Simplilearn, such as Data Science with Python, Data Science with R, ITIL 4, Tableau, and Professional Certificate Program in AI and Machine Learning. My LinkedIn profile gets views, and interviewers are impressed with my resume wherever I apply. Six months after completing Simplilearn’s Big Data Hadoop & Spark Developer in October 2021, I started working as a partner manager with Simetrik, a Colombia-based FinTech start-up.

Applying New Skills

I have been able to apply the knowledge I gained from Simplilearn’s Big Data course at my current job. As a partner manager, I help provide my company with the vision to grow outside the commercial space by recruiting partners in Latin America. This recruiting process requires a lot of data analysis, and I have to see how many companies are willing to become partners and review their numbers. Once I finish recruiting, I will be working to grow the partnership, including working on a lot of data. 

After I took Simplilearn’s Big Data course, I was able to solve a problem for my previous company. We were unsure how to evaluate the performance of channel partners on a year-on-year basis. We had sales data, but it was not a complete picture of the channel partners’ performance.