Open to opportunities

ajay singh

@ajaysingh20

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Senior full-stack developer building secure, scalable Laravel/React platforms and AI-powered SaaS products.

India

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What I'm looking for

I’m looking to build secure, scalable SaaS and enterprise web systems—especially where I can integrate AI via LLM APIs, optimize performance with Redis/queues, and collaborate with distributed teams to deliver reliable production outcomes.

I’m a Senior Full Stack Engineer with 10+ years of experience designing, developing, and scaling enterprise web applications, SaaS platforms, and AI-powered products. I bring proven expertise in Laravel, React.js, REST APIs, MySQL, Redis, Docker, and cloud-ready architectures, with a strong focus on system design and performance.

In the Nokia GDC Project (Vertex Plus Technologies), I developed enterprise-grade applications supporting 500+ global users across multiple organizations. I designed RBAC to strengthen security and governance, built and maintained 80+ RESTful APIs, improved API performance by 30% using Redis caching and query/database tuning, and reduced report generation time by 45% while helping maintain 99.9% uptime.

At Arustu Technology, I spearheaded backend development for two AI-powered SaaS products—Kwurd and uSpeek—from architecture to production launch. I integrated OpenAI/third-party AI APIs for real-time text analysis and communication insights, implemented asynchronous Laravel Queues & Redis job processing for 10,000+ daily tasks, and delivered multi-tenant SaaS architecture with per-tenant data isolation and Stripe billing integration.

I also bring a practical builder’s mindset from earlier WordPress development, delivering 15+ custom themes and plugins and performance-focused WooCommerce work. I actively use AI tools like Claude, ChatGPT/OpenAI API, Cursor IDE, and GitHub Copilot as part of my workflow to move faster on prototyping, debugging, and architecture decisions.

Experience

Work history, roles, and key accomplishments

Senior Backend Developer

Vertex Plus Technologies (Nokia GDC Project)

Sep 2022 - Mar 2026 (3 years 6 months)

Built an enterprise portal with multi-organization workflows and secure, role-based authentication used by 500+ users. Designed RBAC, optimized REST APIs with Redis caching, and improved database query performance and production reliability.

RBAC REST APIs Microservices Redis Query Optimization MySQL CI CD Agile Scrum Claude ChatGpt

Senior Full Stack Developer

Vertex Plus Technologies

Sep 2022 - Mar 2026 (3 years 6 months)

Developed enterprise web applications for 500+ global users, including a Role-Based Access Control (RBAC) system. Built and maintained 80+ RESTful APIs, improving API performance by 30% and reducing report generation time by 45%, while maintaining 99.9% uptime through deployments and troubleshooting.

Laravel REST APIs RBAC Query Optimization Reporting Systems Performance Optimization Distributed Teams Agile Scrum CI CD System Stability

Senior Full Stack Developer

Arustu Technology

Jul 2017 - Aug 2022 (5 years 1 month)

Spearheaded backend development of two AI-powered SaaS products (Kwurd and uSpeek) from architecture to production launch. Integrated OpenAI/third-party AI APIs, implemented async job processing with Laravel Queues and Redis for 10,000+ daily tasks, and designed multi-tenant SaaS architecture with improved performance via queue tuning.

Laravel Redis OpenAI API SaaS architecture Billing Cycles API Design Performance Optimization Mentorship

Senior Backend Developer

Arustu Technology

Jul 2017 - Aug 2022 (5 years 1 month)

Led backend development of AI-powered SaaS products (Kwurd and uSpeek) from architecture to production launch. Integrated OpenAI/third-party AI APIs, implemented asynchronous processing with Laravel Queues and Redis, and delivered multi-tenant SaaS performance improvements.

OpenAI API Redis API Design Performance Optimization Mentorship

WordPress Developer

Web Logic Technology

Jun 2016 - Jun 2017 (1 year)

Developed 15+ custom WordPress themes and plugins based on client requirements. Built WooCommerce e-commerce sites with SEO optimization, achieving a 40% improvement in page load speeds, and implemented custom post types and ACF integrations.

WordPress WooCommerce Custom Theme Development Plugin Development SEO Optimization Plugin Customization ACF