Engineer. Architect. Consultant.
Building practical solutions for complex problems.
I'm Sagar Nayak — an engineer, architect, and consultant who has spent nearly a decade building everything from Android apps to fintech platforms that move money across borders.
I've worked across frontend, backend, mobile, infrastructure, and cloud, which means I don't get stuck in one way of thinking. Real-world projects change, requirements shift, and problems don't come with a manual — that's where adaptability matters most.
When I work with clients, I love hearing ideas and understanding the vision. But once we agree on the what, you can relax and take a backseat — I'll handle the how. That's the value of hiring an expert: you don't just get code, you get decisions made with years of hands-on experience across the entire stack.
My approach is pragmatic: I don't over-engineer for the sake of trends. If containers and Kubernetes add real value, I'll use them. But often, simple Linux deployments with smart cloud scaling are faster to debug, easier to maintain, and just work. In fintech, where client growth is predictable, simplicity wins.
Hands-on experiments with global read/write patterns, conflict resolution, and replication strategies. It’s powerful but operationally complex, and best applied selectively per project.
Refining pragmatic deployment patterns on bare-metal/Linux with cloud-native scaling for faster debugging and reliability without unnecessary overhead.
Designing internal automations and integrations with n8n to streamline ops: alerts, data syncs, and workflow glue between services with versioned, auditable flows.
In-house telemetry to monitor API latency and surface slow endpoints in real time for proactive debugging and SLA visibility.
Bots for FX-rate queries and quick information retrieval using Retrieval-Augmented Generation over internal knowledge bases.
Designing and scaling platforms for international payments, multi-tenant white-label solutions, and secure, compliant fintech environments.
I stick to bare-metal Linux deployments with cloud-native scaling for reliability and fast debugging. Because when something breaks at 3 AM, simplicity beats hype.
Java, Spring Boot, PostgreSQL — building solid backends that scale, stay secure, and handle multiple regions with minimal latency.
6+ years of experience in Android, iOS, and Flutter, including white-label fintech apps serving multiple clients on the same platform.
Guiding distributed teams of Java, Angular, Flutter, iOS, and Android developers — ensuring scalable, secure, and maintainable systems.
Fintech, 2021 – Present
Leading cross-functional teams, architecting remittance platforms, managing infrastructure, and building secure, scalable fintech systems.
2015 – 2020
Developed and shipped multiple Android apps, expanded into backend Java and iOS, and mastered full-stack development across industries.
I enjoy solving messy real-world problems with elegant, practical solutions. I don't chase buzzwords — I build systems that actually work.
Outside of work, I explore distributed systems, multi-region databases, and cloud scaling strategies, always looking for better ways to keep things simple yet powerful.
Lately, I’ve been digging into practical AI/ML — especially Retrieval-Augmented Generation (RAG) and LLM integrations — to enhance internal tools and workflows where they provide clear leverage over classic automation.
Ready to work together? Tell me the destination — I'll handle the route.