Amit Das

Backend Developer with 4 years of experience in the Laravel ecosystem (v8 through v12) and PHP 8.x. Specialised in designing scalable multi-tenant SaaS architectures, optimising database performance through indexing and query refactoring, and offloading heavy workloads via AWS SQS, Lambda, and Laravel Queues. Proven track record of building robust webhook processors, event-driven APIs, and clean SOLID codebases in Dockerised environments. Immediate joiner — zero notice period.

Freelance Backend Developer at Independent Consultant (2026-02 – 2026-04)

• Codebase Rescue: Audited and stabilised a failing Laravel application abandoned by a third-party developer, resolving critical runtime errors and restoring core business functionality.
• SOLID Refactoring: Refactored poorly structured controllers and tightly coupled business logic to align with SOLID principles, significantly improving maintainability and readability.
• Performance Optimisation: Diagnosed and resolved severe N+1 query problems and unoptimised Eloquent relationships, materially reducing page load times and database overhead.

L2 Software Developer at Focalworks Solutions Pvt. Ltd. (2022-01 – 2025-04)

Worked across five live products within the company's portfolio. Key highlights:

• Multi-Tenant Architecture: Upgraded the core SaaS platform from Laravel 8 to 9 and PHP 8.3. Managed a database-per-tenant model using stancl/tenancy, ensuring strict data isolation across US and Canadian clients.
• Database Optimisation: Refactored legacy monolithic controllers using SOLID principles and introduced composite indexes on slow MySQL queries, reducing complex reporting load times by 40%.
• High-Volume Ingestion: Engineered a webhook processor to handle live event payloads exceeding 50,000 records. Bypassed Eloquent memory overhead using array chunking and bulk DB::upsert(), eliminating memory exhaustion during peak loads.
• Async Pipelines: Offloaded heavy reporting workflows from main web servers using AWS SQS, Lambda, and Laravel Queues, keeping core applications highly responsive under load.
• Payment Reconciliation: Built a Razorpay payment reconciliation system via automated console commands to detect dropped webhooks and correct historical payment statuses, ensuring accurate order fulfilment.
• Access Control: Implemented custom RBAC middleware to restrict sensitive job modifications and secure payment pipelines, preventing unauthorised system changes.

Junior Web Developer at B3NET Technologies Pvt. Ltd. (2021-10 – 2021-12)

• UI Integration: Implemented dynamic data loading and asynchronous form submissions using AJAX and Bootstrap within a Laravel application.
• Backend CRUD: Built and maintained foundational CRUD modules and assisted in debugging legacy codebase segments for better maintainability.

BCA