Resume - Germany
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Subhash Mahimaluri
Lead Software Engineer | React Architect | Frontend Lead | Next.js | React Native | AI Engineer | 15+ Yrs
Professional Summary
React Architect & Lead Software Engineer 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 Germany/EU relocation with EU Blue Card sponsorship.
Professional Experience
Principal Product Engineer (Hands-on)
Yexaa Technologies FZCO
- Built PlanBPass, a full-stack AI-driven SaaS platform delivering structured decision support across web, iOS, and Android
- Architected end-to-end product stack: React/Next.js frontend, React Native mobile apps, Node.js backend, AI workflows, and cloud infrastructure
- Designed production-ready AI Advisor system using LLM orchestration, RAG pipelines, and prompt engineering for context-aware responses
- Developed React Native CLI mobile apps with Push Notifications (FCM/APNs), Social Auth (Google, Apple), Subscriptions, and In-App Purchases
- Published production mobile applications to Apple App Store and Google Play Store, managing release pipelines and store compliance requirements
- Achieved 100/100 Lighthouse scores with React, Next.js, TypeScript delivering sub-second page loads
- Deployed scalable services using Docker, CI/CD pipelines, PostgreSQL (Supabase) with row-level security
Principal Engineer | Technical Lead
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
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
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
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
Lead Software Engineer
Yexaa Consultancy Services
- Delivered full-stack SaaS projects for fintech and e-commerce clients using React, TypeScript, Node.js, GraphQL, AWS
- Architected Node.js APIs with MongoDB & DynamoDB serving 100K+ daily users
- Deployed serverless microservices (AWS Lambda) with CloudFront CDN → 40% performance improvement
- Built component libraries & design systems reducing development effort by 25%
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 • SaaS Architecture • Cloud Native
Frontend Technologies
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
Architecture & Design
Micro-Frontends, Distributed Systems, Cloud-Native, API/BFF Patterns, Event-Driven Systems, AI-Augmented Solutions
Work Authorization
Right to Work: Requires EU Blue Card / Visa Sponsorship | Degree Recognized in Germany
Education
MBA - Technology Management
Bachelor's - Computer Science
Certifications
Languages
References and detailed portfolio available upon request