Abdur R.

🏆 Top Rated Plus | 100% Job Success | Senior SaaS Engineer & Team Lead at Aqrendev

🥇 Trusted by startups, enterprises & global SaaS companies

I’m Abdur Rahman — a full-stack engineer and technical lead specializing in scalable, production-ready SaaS platforms. I architect, build, deploy, and maintain complete applications with a strong emphasis on multi-tenancy, performance, reliability, and long-term maintainability.

Over the past few years, I’ve delivered complex systems for startups, enterprise clients across Europe and the US, and multiple SaaS companies. At Aqren.dev, I lead architecture, guide a small engineering team, and ship high-quality, production-grade software on a consistent basis.

I don’t just write code — I design systems that last.

🟢 What I Build

I specialize in multi-tenant SaaS, serverless platforms, and data-heavy applications, including:

• Multi-tenant SaaS (RLS, tenant isolation, permissions, audit logs)

• E-commerce & payment systems (Stripe Connect, fees, onboarding flows)

• Real-time platforms (LiveKit, WebSockets, Supabase Realtime)

• AI-powered applications (OpenAI, Gemini, custom LLM pipelines)

• Complex workflow engines (dynamic forms, automation, validations)

• Dashboards for enterprises (analytics, scheduling, reporting)

• Marketplaces, IoT systems, booking & service-based platforms

If you need something complex, scalable, and built to grow, that’s my zone.

🟢 Backend Engineering (Core Expertise)

I build highly scalable, clean, and maintainable backend systems:

• Node.js / Express / Fastify

• PostgreSQL + Prisma (optimized schemas, indexes, migrations)

• Supabase (RLS, Edge Functions, RPCs, Realtime)

• Redis caching, queues, rate-limiting