Abin S Chandran is a freelance full-stack software developer and solution architect based in Kerala, India, building custom software, SaaS platforms, web applications, Node.js APIs, mobile apps and AI-powered systems for businesses in India and worldwide.
“Good Software Creates Opportunities.”
Abin S Chandran
Kerala, India · Remote
In-depth architectural breakdowns, verified production platforms, and real-world system benchmarks.
Architected and engineered a comprehensive, production-ready CRM SaaS platform featuring multi-stage sales pipelines, automated WhatsApp customer engagement, role-based access control (RBAC), and operational analytics.
Engineered an enterprise Retrieval-Augmented Generation (RAG) platform incorporating hybrid dense-sparse vector search, streaming LLM responses, and document-level permission enforcement.
Built a high-performance cross-platform Flutter mobile app for iOS and Android, backed by a Node.js Express REST API, PostgreSQL database, JWT authentication, and automated Stripe subscription billing.
Designed and implemented a multi-region API Gateway and service mesh capable of handling 50,000+ requests per second with sub-8ms routing overhead and zero-downtime blue/green deployments.
Comprehensive software engineering and technical architecture services tailored to business growth.
Modern, scalable and high-performance web applications.
Engineered with Next.js 15 & React 19 for instantaneous page loads, high organic search rankings, and rock-solid conversion.
Integrate AI, build intelligent workflows and automate repetitive tasks.
Deploy private RAG search, autonomous agents, and WhatsApp automation that save dozens of team hours weekly.
Design robust architectures, secure APIs and scalable backend systems.
Low-latency Node.js microservices, JWT authentication, and compound database indexing handling high concurrent loads.
From idea to launch — complete product development support.
Take SaaS MVPs and commercial platforms from concept to production with 100% IP ownership and clean Git handovers.
Core Web Vitals 95+, Schema.org JSON-LD, Google 3-Pack, and ChatGPT / Perplexity search visibility.
Experience Aura live — Abin's production-grade AI architecture concierge. Grounded in production architectures, hybrid vector RAG retrieval, and strict guardrails.
Live RAG Retrieval Sandbox
Hello! I am Aura, Abin S Chandran's AI technical concierge powered by Google Gemini 3.8 Flash.
I am grounded in Abin's 4+ years of production architectures, Flutter 60fps mobile SaaS, enterprise RAG meshes, and commercial pricing. What would you like to explore?
Sub-second generative inference powered by Google's latest frontier model with intelligent fallback hierarchy and streaming resilience.
Zero hallucinations. Aura retrieves exact facts across 42+ verified case studies, tech stack benchmarks, and commercial rates before synthesizing answers.
Automated lead qualification, citation extraction, dynamic quotation estimates, and pre-filled WhatsApp routing with zero manual friction.
Session quota (15 questions / 10 mins) and burst protection (5 queries / 30s) prevents denial-of-wallet spam and keeps the portfolio lightning-fast for legitimate clients.
Looking to deploy custom customer support bots, internal document RAG search, or automated workflow agents?
I'm Abin S Chandran, a freelance software developer based in Kerala, India. I specialize in building scalable web applications, AI-powered systems and automation tools that solve real business problems.
I enjoy working with businesses and founders to turn ideas into products, with a strong focus on clean architecture, performance and long-term value.
Software engineered around conversion, customer retention, and operational efficiency.
Strict TypeScript, modular component design, and zero technical debt handovers.
Predictable milestones, transparent async updates, and disciplined delivery timelines.
Direct architectural ownership with post-launch maintenance and continuous support.
“Technology is most powerful when it helps people.”
— ABIN S CHANDRAN
Direct feedback from founders, CTOs, and product leaders partnering on production SaaS, AI systems, and mobile applications.
“Abin re-engineered our daily reconciliation batch processor from the ground up. He implemented row-level pessimistic locking and idempotent ledger events that completely stopped duplicate ledger postings during bank network timeouts. Working directly with him saved us months of coordination overhead.”
“We needed a production RAG system that respected document-level access permissions. Abin designed a hybrid vector and keyword search pipeline in PostgreSQL using pgvector, complete with citation chunking and guardrails. He delivered clean code, thorough documentation, and met every milestone ahead of schedule.”
“Abin delivered our Flutter cross-platform mobile app for iOS and Android on an aggressive 8-week timeline. The offline-first SQLite sync engine he built allowed field technicians to log jobs in remote basements without cell signal and sync seamlessly once reconnected.”
Let's discuss how we can turn your ideas into real-world solutions. Whether you need a web app, an internal tool, or AI workflows.
Deep-dive architectural breakdowns on Flutter performance, low-latency Node.js REST APIs, and Next.js App Router engineering.
Engineering 60fps Flutter applications requires careful widget rebuilding control, isolate thread offloading, and effective local caching with Hive. Here is how I structure enterprise Flutter apps.
Scaling a Node.js backend requires more than basic Express routes. Learn how connection pooling, Redis query caching, rate limiting, and centralized error handling power production APIs.
Next.js 15 brings powerful Server Components, Server Actions, and enhanced caching controls. Explore how to build clean, fast, SEO-friendly SaaS web applications.
Common questions about hiring me for freelance software development, tech stack, remote collaboration across India & worldwide, and project estimation.
I specialize in full-stack web applications, SaaS platforms, Node.js & Express REST APIs, React and Next.js frontends, custom admin dashboards, third-party API integrations, and database performance optimization for startups, small businesses, and growing digital brands.
Start a project discussion on WhatsApp, use the UNIX CLI shell, or submit a direct inquiry form below.
Prefer immediate messaging? Start a project discussion directly on WhatsApp.
