I had a call with Sachin. He explained things so clearly, shared useful resources, even reviewed my resume, and made sure I had proper direction.
Aseem
Pinned
Sachin provided a thorough and insightful mentoring session, setting the right environment from the start. His suggestions were spot-on, and his feedback was constructive and actionable. He helped identify key areas to focus on and provided valuable inputs to kick-start preparation. His guidance was clear, concise, and highly effective. Highly recommended for anyone looking to improve their skills and knowledge.
Avinash Anantarapu
Pinned
My Topmate session with Sachin was extremely insightful and well-structured. He provided a clear, step-by-step strategy for preparing for data engineering interviews, covering key areas like system design, DSA, SQL, cloud data pipelines, and even machine learning concepts. What stood out was how he connected these topics to real-world scenarios and aligned them with resume-building strategies. His guidance was practical, focused, and perfectly tailored to my current skill level and career goals.
souvik Nag
Pinned
It was amazing interaction. Sachin explained me full on interview preparation, things to learn, where to practice problems and right approach for joining big product companies. We also talked post life of joining microsoft which cleared things which I had in my mind. He was friendly and I am able to connect instantly. Would totally recommend to get guidance from him. Sachin, I hope we can connect again and develop meaningful friendship. Looking forward to learn more new things and support from you. Cheers 🥳
Hi, I’m Sachin Gajwa – a Data Engineer at Microsoft with over 5 years of experience designing and building large-scale data systems.
Before joining Microsoft, I went through 30+ interview processes at top product companies like Amazon, Oracle, Tiger Analytics, Impetus, and more — successfully clearing multiple rounds along the way.
Through this journey, I developed a deep, firsthand understanding of how to crack data engineering interviews at top-tier tech companies.
Now, I mentor data engineers and aspiring professionals to:
* Strategically prepare for technical and behavioral interviews
* Master key concepts like SQL, Python, Data Modeling, System Design, and Big Data tools
* Build high-impact resumes that get shortlisted
* Navigate the interview journey with confidence and clarity
Whether you're targeting FAANG or fast-growing startups, I help you bridge the gap between preparation and offer with a focused, real-world approach.
Let’s turn your preparation into an offer letter.