Hello, World
Senior Software Engineer • Distributed Systems Architect
Crafting high-performance distributed systems and microservices that scale effortlessly with demand. Mastering event-driven architectures and cloud-native deployments to drive innovation and reliability.
Proven expertise in powering platforms that process millions of transactions daily—delivering speed, security, and unbreakable uptime.
3+
Years
30M+
Txns
100%
Satisfaction
Building Scalable Applications
I'm Roshan Sahani, a Fullstack Software Engineer based in Bengaluru, India. With a proven track record in crafting high-stakes platforms, I design and deliver resilient architectures that power millions of transactions with unyielding performance and precision.
I've orchestrated transformative migrations from monolithic legacies to cutting-edge TypeScript microservices, engineered Kafka-fueled pipelines devouring 30M+ records daily, and architected settlement engines mastering 200+ concurrent streams with flawless deterministic ordering. The outcome? A 40% plunge in failures through battle-hardened resilience patterns like circuit breakers and adaptive backoff—unleashing systems that scale fearlessly and outperform under pressure.
My drive extends beyond code: I mentor teams to embrace modern development practices, fuel open-source innovation with real-world rigor, and fuse AI/ML into cloud-native ecosystems at the forefront of tech evolution. As a Google Agentic AI Hackathon 2025 finalist (top 3.3% of 200,000 teams), my Raseed project—a seamless AI receipt engine blending microservices and vector databases—exemplifies turning visionary concepts into production-ready powerhouses.
Let's engineer the future: From elegant frontends to resilient backends and intelligent architectures, I build what endures, excels, and elevates—driving impact at every scale.
Core Expertise
Fullstack Software Engineer
Frontend • Backend • System Architecture
Google Hackathon 2025 Finalist
Bengaluru, India
Driving fullstack engineering excellence across global time zones.
My Technical Expertise
Distributed systems architect with expertise in microservices, event-driven architectures, and high-performance data platforms.
Work Experience
My professional journey in software development, from distributed systems architecture to mentoring engineering teams on building scalable, production-grade applications.
Experience
Backend & DevOps Engineer
Raveum
Engineer responsible for architecting scalable fintech backends, cloud infrastructure automation, and secure payment integrations using Stripe and Plaid. Built production-ready LLM microservices, orchestrated data pipelines, and optimized deployments in AWS.
Key Achievements:
- Integrated payment providers (Stripe, Plaid) with secure API flows, supporting real-time bank account linking and transaction processing
- Designed and deployed FastAPI microservices for LLM/NLP applications, with structured JSON outputs for downstream proposal automation
- Automated AWS infrastructure using ECS, Lambda, and Secrets Manager for robust deployments and credential management
- Implemented CI/CD pipelines for zero-downtime releases, monitoring (CloudWatch), and rollback strategies
- Scaled backend systems for high-concurrency fintech operations (1M+ transactions/month), tuned latency and throughput using Redis, Kafka, and containerization
- Supported frontend pilot testing via React interfaces for LLM-powered API endpoints and payment flows
Senior Software Engineer (SDE-2)
Neokred
Senior Software Engineer specializing in distributed systems and microservices architecture. Led architectural transformations, designed high-throughput data pipelines, and mentored junior engineers on systems thinking and code quality standards.
Key Achievements:
- Migrated JavaScript monolith to TypeScript microservices (30+ independent services) enabling parallel deployment cycles with zero downtime and backward compatibility across payment, settlement, and reporting domains
- Built distributed data pipeline processing 30M records via Redis, Kafka, and S3, reducing latency by 25% and enabling real-time transaction reporting
- Architected settlement engine handling 200 concurrent transactions with deterministic ordering, GraphQL bulk APIs with validation schemas, and T+1 hourly reconciliation
- Implemented resilience patterns: Kafka DLQ, exponential backoff, circuit breakers, and environment parity validation, reducing transaction failures by 40%
- Designed GraphQL gateway with query complexity analysis, rate limiting, authentication, and request batching for 10K QPS
- Mentored junior engineers on distributed systems, code review standards, and architectural decision frameworks
Full Stack Engineer
Sibin Group
Full Stack Engineer working on disease management systems and clinical workflows. Designed backend architecture using ASP.NET Core, optimized database performance, and built responsive frontend components.
Key Achievements:
- Designed disease management system using ASP.NET Core with repository patterns and dependency injection for clean, testable code
- Engineered optimized SQL stored procedures reducing report latency by 35% through advanced index strategies and query optimization
- Built responsive Angular UI components with real-time validation, change detection optimization, and complex form state management for clinical workflows
Featured Projects
Featured projects showcasing expertise in distributed systems, microservices architecture, and AI integration. Google Hackathon 2025 finalist with innovative solutions.
Eleven11 - Smart Product Companion App
All-in-one mobile companion app for Eleven11 smart products featuring real-time device control, IoT integration with ESP32, and seamless backend architecture built with Supabase for secure device management.
Key Features:
- Complete backend architecture with Supabase for scalable device management
- Real-time bidirectional communication between Flutter app and ESP32 devices
- Secure device pairing and authentication with encrypted channels
Eleven11 - Smart Product Companion App
Detailed Description:
Eleven11 is a comprehensive smart product companion app designed for effortless control and personalization of Eleven11 smart devices. I architected and developed the entire backend infrastructure using Supabase, implementing secure real-time communication between the Flutter mobile app and ESP32-based IoT devices. The app enables seamless device pairing, real-time monitoring, smart automation, and firmware management. Features include encrypted device communication, real-time data synchronization, automated scheduling, and the unique 11:11 wish notification feature that transforms daily moments into meaningful rituals. The backend handles device authentication, data persistence, real-time updates, and secure firmware management across all connected devices.
Technologies Used:
Key Features:
- Complete backend architecture with Supabase for scalable device management
- Real-time bidirectional communication between Flutter app and ESP32 devices
- Secure device pairing and authentication with encrypted channels
- Real-time data synchronization and instant device control
- Smart automation with customizable schedules and routines
- Firmware over-the-air (OTA) updates for seamless device maintenance
- 11:11 wish notification feature for daily mindfulness moments
- Multi-device management with centralized dashboard and monitoring
Amazona - E-Commerce Platform
Full-stack e-commerce web application featuring product catalog, shopping cart, user authentication, and seamless checkout experience. Built with modern web technologies for a responsive and intuitive shopping experience.
Key Features:
- Full-stack e-commerce solution with React and Node.js
- Product catalog with categories and detailed product pages
- Shopping cart functionality with persistent state management
Amazona - E-Commerce Platform
Detailed Description:
Amazona is a complete e-commerce platform that provides a seamless online shopping experience. The application features a comprehensive product catalog with categories, detailed product pages, shopping cart functionality, and user authentication. Built with modern web technologies, it offers a responsive design that works seamlessly across all devices. The platform includes features like product search, cart management, order processing, and a clean, intuitive user interface that makes online shopping effortless and enjoyable.
Technologies Used:
Key Features:
- Full-stack e-commerce solution with React and Node.js
- Product catalog with categories and detailed product pages
- Shopping cart functionality with persistent state management
- User authentication and session management
- Responsive design optimized for all devices
- RESTful API architecture for scalable backend
- Clean and intuitive user interface
- Deployed on Vercel for high performance and reliability
GitHub Contributions
My coding activity and contribution history
Total Repositories
30+
Total Commits
500+
Followers
130+
Starred
50+
Contribution Activity
Contribution Activity
View my GitHub profile to see more projects, contributions, and open-source work
Visit GitHubLeetCode Progress
My problem-solving journey and coding challenges
Get In Touch
I'm always interested in new opportunities and interesting projects. Whether you have a question or just want to say hi, I'll try my best to get back to you!
Let's Connect
Whether you have a project in mind, want to collaborate, or just want to say hello, I'd love to hear from you. Here are the best ways to reach me: