Kosha S.
Senior iOS & Android Developer | AI/ML, LLMs, IoT
✅ 100% Job Success Rate | 🏆 Top Rated Developer | 🏆 10+ Years of Experience I am a Senior Mobile Application Engineer with over 10 years of experience in iOS (iPhone & iPad) and 7+ years in Android development, delivering enterprise-grade and utility applications used by thousands of users worldwide. I specialize in building scalable, secure, and high-performance mobile apps for industries such as Healthcare, Logistics, Automotive, and Social Media. 📱 Mobile App Development Native iOS (Swift / SwiftUI) & Android (Kotlin) High-traffic, production-ready apps Long-term app updates & maintenance 🌐 IoT & Hardware Integrations BLE & Wi-Fi-enabled applications Arduino & custom hardware integrations Real-time device communication & monitoring 🧠 AI / ML Capabilities I have hands-on experience integrating AI/ML capabilities into mobile and web applications, including: ✔️ LLM Integrations – GPT-4, Claude, Gemini, LLaMA (OpenAI SDK, AWS Bedrock) ✔️ AI-Powered Workflows – Agentic bots, automation & AI assistants ✔️ Speech & Vision AI – Whisper STT, OCR, image recognition ✔️ RAG Pipelines & Custom APIs – LangChain, LlamaIndex, Vector Databases ✔️ Voice Assistants & Chatbots – NLP-based conversational systems I work with a dedicated team of UI/UX designers, backend/API engineers, and PHP, Node.js, and Python developers, enabling end-to-end product delivery. 📩 Let’s connect and discuss how I can help bring your app idea to life.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $5.8k
Billed in all: $188,401$188k
$5.8k in the last 6 months
Across 29 contracts
Earnings, last 30 days
Skill rankings: Top 8% in iPhone UI Design
Ranked by MRR among everyone on Upwork with the skill.
- #12iPad UI Design130 freelancers · 🇮🇳 #3Top 9%🇮🇳#3 of 49
- #51iPhone UI Design622 freelancers · 🇮🇳 #17Top 8%🇮🇳#17 of 180
- #76iPad App Development446 freelancers · 🇮🇳 #32Top 17%🇮🇳#32 of 201
- #841Android App Development6,395 freelancers · 🇮🇳 #265Top 13%🇮🇳#265 of 2,261
- #932iOS Development6,533 freelancers · 🇮🇳 #289Top 14%🇮🇳#289 of 2,286
- #1,021API Development6,848 freelancers · 🇮🇳 #288Top 15%🇮🇳#288 of 2,016
- #1,387HTML514,581 freelancers · 🇮🇳 #328Top 10%🇮🇳#328 of 3,981
- #2,700PHP24,835 freelancers · 🇮🇳 #800Top 11%🇮🇳#800 of 7,967