Saurabh N.

Senior Java/Spring Boot Expert, Kafka | Fintech | CRM | Stripe

Are you building a product that needs scalable backend microservices, event-driven architecture, and seamless integration, without compromising on performance? Senior Java Backend Engineer with 11+ years of experience building large-scale, secure, and high-performance backend systems for US, Canada, Singapore, and India-based clients. Past clients include Stripe (OpenChannel migration), Sprouts.ai CRM platform, Orchestro AI (US logistics), and independent fintech/logistics products for US clients. Available for long-term contracts. Let's build something reliable. I specialize in Spring Boot, Microservices, Distributed Systems, and complex API integrations, and have supported both startups and enterprise teams in designing, building, and optimizing mission-critical applications from the ground up. Over the years, I have worked on a wide range of backend systems, CRM pipelines, large-scale payment ecosystems, enterprise marketplaces, data processing engines, and multi-service architectures. I enjoy solving deep backend challenges and making systems faster, cleaner, and more scalable. What I Do Best: - Java & Spring Boot Backend Development - Scalable microservices architecture - REST APIs design, development & documentation - Spring Security, OAuth2, Auth0, JWT, SSO - Optimization of slow APIs, DB queries & system performance Enterprise-Grade Integrations: - Payment gateways: Stripe, Braintree, Authorize.net, FreedomPay - CRM Systems (Salesforce, HubSpot, Zoho, custom CRMs) - 3rd-party APIs, webhooks, event-based systems - Queue systems: RabbitMQ, Kafka Database & Data Engineering: - MongoDB, MySQL, PostgreSQL - Large data processing (Java Streams, parallelization, pipeline design) - Backup/restore mechanisms - Redis caching for low-latency microservices Architect-Level Experience: - System design, technical planning, sprint leadership - Mentoring juniors & code review - Clean architecture, modular services, best practices - Cloud experience (AWS S3, RDS, CloudWatch) - Docker-based deployments Who I Usually Work With: - CTOs and founders looking for a reliable senior backend developer - Teams building SaaS platforms, CRM pipelines, enterprise apps or payment systems - Startups needing hands-on development + architecture guidance - Companies wanting to modernize, optimize, or refactor backend systems Why Clients Hire Me: - 10+ years of hands-on Java engineering - Strong ownership & independent delivery - Excellent communication and transparent progress updates - Ability to work end-to-end: architecture → development → optimization - Experience working remotely with US, Singapore & Canada clients for years I enjoy long-term collaborations and working as an extension of your engineering team. If you’re building something complex and backend-heavy, I can help you deliver it with quality and stability.