Karun K.

🏆 Top Rated on Upwork 🏆 35+ Projects Delivered | $10k+ Earned | 450+ Hours Worked 🏆 Proven Expertise in Mobile Development & AI/LLM Training I am a results-driven Mobile App Developer (iOS & Flutter) and AI/LLM Training Specialist with over a decade of experience delivering technology solutions for startups, enterprises, and global clients. My expertise spans end-to-end iOS development, cross-platform Flutter solutions, and AI-powered integrations, as well as large language model (LLM) training and reinforcement learning from human feedback (RLHF) for conversational AI systems. With a background that combines technical depth, product ownership (CSPO certified), and business alignment, I ensure that every solution I deliver is robust, scalable, and tailored to achieve client goals. Mobile App Development (iOS & Flutter) I design and develop high-quality, scalable, and user-centric mobile applications for iOS and cross-platform needs. Core Expertise: - iOS (Swift, Objective-C, SwiftUI): UIKit, CoreData, AVFoundation, MapKit, Push Notifications, In-App Purchases, App Store deployment - Flutter (Dart): Cross-platform apps for iOS & Android, optimized for speed and cost efficiency - AI-Powered Apps: CoreML, Firebase ML, OpenAI/ChatGPT APIs, voice-to-text, recommendation engines, chatbots - Integrations: Payment gateways (Stripe, Braintree), REST/GraphQL APIs, Social logins (Google, Facebook, Twitter) - Tools & Processes: Git workflows, CI/CD (Bamboo, App Center), Agile Scrum, Jira, Bitbucket, Confluence - Architecture: MVC, MVVM, clean scalable codebases Whether you need a new app built from scratch, feature enhancements, or AI-enabled functionality, I provide solutions that meet business objectives while maintaining technical excellence. AI & LLM Training Services In addition to mobile development, I contribute to advancing AI and intelligent automation through LLM training and data annotation. Core Expertise: - LLM Training & Fine-Tuning: Preparing conversational AI models for improved accuracy and contextual understanding - Reinforcement Learning with Human Feedback (RLHF): Guiding AI systems toward human-aligned responses - Data Annotation & Curation: Building structured datasets for natural language processing and machine learning - Conversational AI Development: Enhancing chatbots, virtual assistants, and AI-driven customer support systems I help organizations strengthen their AI capabilities by ensuring that models are well-trained, human-aligned, and ready for real-world deployment. Why Clients Hire Me ✔️ Proven Track Record: Top Rated with repeat clients on Upwork ✔️ Dual Expertise: Strong foundation in Mobile Apps & AI/LLMs, enabling cross-disciplinary solutions ✔️ Corporate Mindset: Skilled in Agile and CSPO-certified, ensuring business alignment and structured delivery ✔️ Transparent Collaboration: Formal communication, milestone clarity, and a focus on long-term partnerships If you are seeking a reliable partner for: - Mobile App Development (iOS & Flutter), or - AI/LLM Training & Conversational AI Click “Invite” or “Contact”, and let’s discuss how I can contribute to your success.