Salman Hossain S.

Expert UI UX Designer, Writer and Design Engineer

I'm a certified UI/UX professional ranked as Top Rated Plus (⚡Top 3%) on Upwork, with more than a decade of experience turning complex, high-stakes workflows into clear cross-platform products. I connect user research, product strategy, scalable design systems, and implementation-ready design — bridging the gap between design and engineering. My expertise sits in two areas where I've held long-term ownership: - Regulated products — Senior UX Engineer at a healthcare tech company since 2021, leading UX for a clinically validated pain-management platform that has supported hundreds of thousands of users across 100+ countries. I work with patient-centric design, clinical data visualization, and HIPAA/GDPR-aware workflows. - Complex B2B SaaS — Lead UI/UX Designer for a complex B2B enterprise SaaS product since 2020, owning design for quality management, audit, risk, and operational workflows, including a cross-platform design system. A few facts: - Top Rated Plus on Upwork with a 100% Job Success Score and 6,200+ marketplace hours. - Product and UX writing work for companies including Airtel, Axiata, UXPin, and UserGuiding (a mix of design and content engagements). - Builder of Vara Koto, which grew to 100,000+ registered users and received the 2016 mBillionth Award. What I can own on your product: - Product discovery — user research, interviews, personas, journey maps, and usability testing. - Complex workflows and information architecture for dense operational domains. - Design systems and cross-platform UX (Atomic Design, Material Design, HIG). - Data visualization and regulated experiences. - Prototyping and design-to-engineering delivery with front-end fluency (ReactJS, Ionic, Capacitor, AstroJS, Tailwind CSS, and shadcn-style component libraries). - UX writing and technical documentation. AI Proficiency: I design AI into products, not just use the tools. I designed and architected an AI companion for a clinically validated health app and shipped AI features in a live App Store app, Mestogo. I'm experienced in AI UX patterns — conversational design, trust and transparency, human-in-the-loop systems, and uncertainty handling — and I'm a daily practitioner of agent harnesses (Claude Code, Cursor, Codex), prompt engineering, and AI evaluation. By working with me, you get an individual contributor who learns complex domains quickly, drives work independently, and ships alongside engineering. I'm open to long-term product design engagements and selected consulting work. If you're building consumer tech or a complex SaaS product, let's talk.