Harshal Wagh

Software Engineer @ Ace Turtle | JavaScript • TypeScript • Node.js • Express.js • React • AWS • Docker • CI/CD • MongoDB • Redis • REST APIs • System Design | n8n | MERN Stack Developer · Bengaluru, Karnataka, India

Hi, I’m Harshal Wagh — a focused full stack developer currently working as an Associate Software Engineer at Ace Turtle Pvt Ltd. I build scalable backend systems, reliable APIs, and asynchronous workflows that power e-commerce and logistics operations. My core stack includes Node.js, Express.js, MongoDB, and TypeScript, with a strong focus on system reliability, performance, and clean architecture. My work involves designing and optimizing complex business workflows such as Sales Order (SO) processing, Return Order (RO) pipelines, cancellation handling, shipment patching, and partner API integrations. I regularly work with high-volume data flows and distributed async systems where correctness and fault tolerance are critical. What I’ve worked on: • End-to-end SO & RO workflows with validation layers and business rule enforcement • Advanced MongoDB aggregation pipelines for analytics, reporting, and variance tracking • Retry-safe queue processing using AWS SQS • Large-scale CSV ingestion and batch-based data pipelines • AWS S3 integrations for file storage and automation • Cron-based operational workflows and availability checks • Partner integrations including Cashfree (Cashgram refunds), Rubicon Ace Omni, and Delhivery status mapping How I approach engineering: I focus on building backend systems that remain stable under failure and high load. I care about modular design, clean async handling, and ensuring consistency across distributed workflows. I enjoy breaking down complex operational problems into smaller, testable components and designing systems that are predictable, maintainable, and scalable. Technical Strengths: Backend: Node.js, Express.js, JavaScript, TypeScript, REST APIs, Mongoose Databases: MongoDB, MySQL, Aggregation Pipelines, Query Optimization Cloud & DevOps: AWS S3, AWS SQS, Docker, Git, GitHub, Linux, CI/CD basics Frontend: React Concepts: Asynchronous Programming, Distributed Workflows, Automation Systems, Retry Mechanisms, Performance Optimization I’m deeply interested in backend architecture, scalable systems, async patterns, database performance tuning, and solving operational engineering challenges through code. Let’s connect and build reliable systems that scale. 📧 [email protected] 🔗 GitHub: github.com/8309h