Hari L.
Fractional CTO & Full-Stack Engineer | AI App Security & Scale
Struggling to get that app across the finish line? Worried about hidden security gaps and scaling bottlenecks? Or just not happy with the current state of your build? Your app works in the demo. Then a real user shows up and it breaks. I fix that. I’ve been building software for 10+ years. Right now, I focus on two core areas: AI App Hardening & Cleanup: Taking apps built fast in Lovable, Bolt.new, v0, Replit, or Claude Code and getting them production-ready for real users, real scale, and real money. Fractional CTO: Serving as the technical lead for founders who need high-level engineering leadership, architectural strategy, and developer oversight—without the full-time executive overhead. Beyond client work, I build and ship my own iPhone apps—handling product design, pricing strategy, global launches, paywall optimization, and analytics myself. When I advise you on user acquisition, pricing tiers, or paywall placement, it comes from hands-on founder experience, not blog posts. 🚨 What’s Usually Broken in AI-Built Apps Exposed Data & Weak Security: Your data looks secure, but unconfigured Row Level Security (RLS) or public endpoints leave your database open to anyone who knows where to look. Database Bottlenecks: Queries structured for 50 test users completely fall apart at 5,000 or 50,000 users. Fixing this early prevents costly emergency rewrites. Runaway AI Costs: Missing rate limits, lack of caching, and unhandled retries can turn a $40 monthly AI bill into a $4,000 weekend surprise. Zero Test Coverage: Without automated tests, every new feature risks quietly breaking core workflows until an angry customer emails you. Hidden Performance Leaks: Unoptimized database calls and redundant API requests slow down your UI. I profile and measure performance first instead of guessing. 🛠️ How We Can Work Together 1. Code & Architecture Audit (Fixed Price) I perform an in-depth code review of your application and deliver a plain-English diagnostic report: Critical security vulnerabilities & data leaks Scalability bottlenecks & performance risks Estimated cost breakdown and priority roadmap to fix them You keep this report regardless of whether we continue working together. 2. Fixed-Price App Cleanup We lock in a defined scope, clear deadline, and fixed budget to fix all security gaps, optimize database queries, implement caching/rate-limiting, and prepare your app for production launch. 3. Fractional CTO (Monthly Retainer) I take ownership of your technical strategy and execution: Architectural decisions & tech stack selection Code reviews and oversight for junior/mid-level devs AI API cost optimization and quality control Honest timelines, risk assessments, and build-vs-buy decisions 💻 Technical Stack Frontend & Web: Next.js, React, TypeScript, Tailwind CSS, shadcn/ui Mobile: React Native / Expo, iOS & Android, In-App Purchases, RevenueCat Backend & Data: Node.js, Laravel, Postgres, Supabase, Firebase, MySQL AI & Integrations: OpenAI, Anthropic, RAG pipelines, AI Agents, Prompt Optimization DevOps & Cloud: Docker, CI/CD, Vercel, AWS 🌟 Proven Track Record Million+ App Downloads: Shipped and scaled mobile apps across global markets. Open-Source Creator: Author of Animata (2.7K+ GitHub stars), an open-source UI component library. Tech Writer: Technical author on Dev.to covering frontend development, UI components, and software engineering best practices. "Hari is a first-rate developer—skilled, creative, and always delivers beyond expectations!" "Top-quality work, proactive problem-solving, and a fantastic communicator." "One of the best developers I've worked with. Highly skilled, always on time and on budget." 📩 Ready to Get Started? Send over your repository or your prototype link (Lovable, Bolt, v0, Replit) along with your launch goals. I’ll give you an honest evaluation of whether it needs a cleanup, a rewrite, or nothing at all.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $2.8k
Billed in all: $169,317$169k
$2.8k in the last 6 months
Across 86 contracts
Earnings, last 30 days
Skill rankings: Top 16% in Laravel
Ranked by MRR among everyone on Upwork with the skill.
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