I'm Sachin Tiwari, a Software Development Engineer currently building Recon-SaaS at Razorpay—a 0→1 reconciliation platform powering automated financial operations for top merchants. I’ve engineered scalable, production-grade systems across fintech, cruise tech, and HR tech, with real-world impact: At Razorpay, I designed ingestion pipelines, dynamic schedulers, configurable rule engines, and large-scale microservices to reduce manual ops by 80% and processing time by 40%. At Signzy, I integrated UIDAI & NSDL APIs with banking platforms, enforced TDD, and streamlined deployments using Docker. At DeCurtis, I delivered high-impact cruise industry apps and backend automations. At Blitz Jobs, I built full-stack onboarding systems from scratch. I specialize in backend dev (Golang, Node.js), system design, DSA, resume & interview prep, and mentoring engineers to land tech jobs at top companies. If you're looking to crack product-based interviews, build resume-worthy projects, or want guidance in your dev journey—let’s connect. I’ll help you upskill with structure, clarity, and real-world insights.