Subhash Mahimaluri
Solution Architect | React Architect | Frontend Lead | Next.js | React Native | AI Engineer | 15+ Yrs
Professional Summary
Solution Architect & React Architect with 15+ years building high-scale SaaS platforms and cloud-native applications for Fortune 500 enterprises. Expert in Frontend Architecture (React, Next.js, Micro Frontends), React Native mobile development, and AI/LLM Integration (RAG, Vector DBs). Proven hands-on engineering leader driving end-to-end product development and cross-functional and distributed team delivery across web, iOS, and Android. Track record of optimizing system performance by 40%, reducing infrastructure costs by 25%, and delivering production-grade AI solutions. Open to relocation across EU (Netherlands, Belgium, Ireland, Sweden, Denmark).
Professional Experience
Solution Architect at Aeries Technology
- Solution Architect on a strategic enterprise client engagement, defining the multi-frontend (Micro-Frontend) architecture and shared platform standards for a large-scale application landscape
- Designing an AI Agentic Architecture — copilot agents that assist users and automate workflows across the product suite using modern LLM orchestration patterns
- Establishing frontend architecture, reusable component standards, and AI-integration guidelines across distributed engineering teams
Solution Architect at Yexaa Technologies FZCO
- As Solution Architect and hands-on individual contributor, designed and developed GatheredHQ, RexQR, PlanBPass, production-grade AI-driven SaaS apps delivering structured decision support across Web, iOS, and Android
- Architected the complete product stack including Next.js / React web frontend, React Native mobile applications, Node.js services, Supabase/PostgreSQL backend, and cloud infrastructure
- Designed and implemented a production-ready AI Advisor system, leveraging LLM orchestration, Retrieval-Augmented Generation (RAG), and advanced prompt engineering to deliver context-aware, reliable responses
- Built and shipped React Native CLI mobile apps with Push Notifications (FCM/APNs), Social Authentication (Google, Apple), Subscriptions, and In-App Purchases, ensuring full App Store and Play Store compliance
- Successfully published and managed live mobile applications on Apple App Store and Google Play Store, owning release pipelines, versioning, and store review processes
- Delivered high-performance web experiences, achieving 100/100 Lighthouse scores through optimized React, Next.js, and TypeScript implementations with sub-second load times
Projects:
GatheredHQ — Digital Menu & Restaurant POS (2025)
- Led the end-to-end migration of GatheredHQ from a Base44 prototype to a production-grade Next.js SaaS platform, establishing a scalable foundation for long-term growth
- Architected a multi-restaurant, role-based SaaS backend using Supabase (PostgreSQL) with Row Level Security (RLS), supporting Owners, Managers, and Waiters across multiple restaurants
- Designed and implemented a centralized backend architecture, enabling seamless consumption by Web (Next.js) and future mobile applications, independent of frontend uptime
- Built a secure onboarding and restaurant setup flow, allowing owners to create and manage multiple restaurants, staff roles, menus, and QR-based public menu pages
- Implemented high-performance, SEO-friendly public menu pages with optimized Next.js rendering and mobile-first UX
- Established Agile delivery process as Product Owner, working closely with the client through weekly sprints, pilot feedback, and iterative feature refinement
- Delivered a live MVP within one week, enabling real-world pilot deployment in a restaurant environment
- Ensured production readiness through schema design, migrations, defect stabilization, and QA workflows during pilot rollout
Technologies: Next.js, React, TypeScript, Supabase, PostgreSQL, RLS, Tailwind CSS
RexQR — Multi-Tenant Hospitality & Services SaaS (2025 – 2026)
- Architected RexQR, a multi-tenant SaaS spanning two verticals from a single vertical-aware platform — Hospitality (restaurants, cafés, bars) and Services (salons, car wash, clinics)
- Designed the backend on NestJS + Fastify with strict domain-driven modules, JWT / RBAC guards, Zod validation, and a consistent API response contract over Supabase / PostgreSQL
- Built an AI Sales Agent (Google Gemini) with proactive upsell, smart pairing, and menu-grounded suggestions, plus AI reports, AI menu extraction, and AI translations metered through a per-venue AI-credit system
- Shipped full guest ordering, payments (Stripe Connect, split bill, tips), bookings, waitlist, loyalty & CRM, KDS, and queue/token management across owner, staff, and guest apps
Technologies: NestJS, Fastify, React, Vite, TypeScript, Supabase, PostgreSQL, Stripe, Redis, Google Gemini, Turborepo, Docker
Principal Engineer | Technical Lead at Zensar Technologies
- Led enterprise-grade SaaS applications and cross-functional engineering teams for Fortune 500 clients including Shell and National Grid
- Designed CI/CD pipelines reducing deployment cycles from weekly to daily with 90%+ test coverage
Projects:
National Grid UK (1+ Year)
- Built enterprise UI with Next.js (SSR), React 18, TypeScript with reusable component architecture
- Designed AWS CI/CD pipelines (CodePipeline, Lambda, S3, CloudFront) → weekly to daily deployments
- Achieved 90%+ test coverage with Vitest & Playwright and 25% faster API responses
- Owned frontend architecture decisions, standards enforcement, and cross-team collaboration
Technologies: Next.js, React 18, TypeScript, Node.js, AWS, Vitest, Playwright
Shell AI Assistant (1 Year)
- Designed enterprise AI assistant using OpenAI-based LLMs and production RAG pipelines, FAISS/Pinecone, Node.js microservices
- Fine-tuned GPT models → reduced support tickets by 20% with context-aware responses
- Integrated Azure services (CosmosDB, Redis Cache) → 25% lower latency, 15% infrastructure savings
Technologies: React, TypeScript, LLMs, RAG, FAISS, Pinecone, Azure, Node.js
Shell FleetHub Modernization (1.5 Years)
- Led React 18 + TypeScript modernization with Redux Toolkit + RTK Query → 40% faster load times
- Adopted Micro-Frontend architecture with Module Federation for independent deployments
- Optimized Azure cloud infrastructure with Auto Scaling, Load Balancers, Redis caching
Technologies: React 18, TypeScript, Redux Toolkit, Module Federation, Azure, Jest, Playwright
Technical Expertise
Core Skills: React • Next.js • TypeScript • JavaScript • React Native • Frontend Architecture • Micro Frontend • Module Federation • Node.js • REST API • GraphQL • AWS • Azure • Docker • CI/CD • AI Integration • LLM • RAG • Agent Architecture • Harness Engineering • SaaS Architecture • Cloud Native
Frontend: React.js (8+ years), Next.js, TypeScript (6+ Years), Redux/Context API, HTML5, CSS3, Tailwind CSS, Styled Components, Webpack, Vite, Module Federation, React Native (iOS & Android), Design Systems, Monorepos (Nx/Turbo)
Backend & APIs: Node.js (5+ years), Express.js, Python (3+ Years), GraphQL, REST APIs, Microservices, MongoDB, PostgreSQL, Redis, Supabase
Cloud & DevOps: AWS (3+ Years), Azure (3+ Years), Azure DevOps, Docker, Kubernetes, CI/CD, GitHub Actions
Testing & Quality: Jest, Vitest, React Testing Library, Cypress, Playwright, TDD/BDD, 95%+ code coverage
AI & Automation: OpenAI, LangChain, LLMs, RAG, AI Agents, n8n, Prompt Engineering, Agentic Architecture, AI Harness Engineering, Multi-Agent Systems
Architecture & Design: Micro-Frontends, Distributed Systems, Cloud-Native, API/BFF Patterns, Event-Driven Systems, AI-Augmented Solutions, Agentic & AI-Augmented Systems
Core Competencies: Technical Leadership, Cross-Functional Team Delivery, Agile / Scrum, Product Ownership, Mentoring & Coaching, Stakeholder Management
Work Authorization
Requires EU work authorization / visa sponsorship
Education
Bachelor of Technology in Computer Science & Engineering
MBA in Technology Management
Certifications
- AWS Certified Developer
- NodeJs Developer Certification
- React JS Advanced
Languages
English (Fluent)
References
References and detailed portfolio available upon request