I help startups and product teams turn product ideas into real, launch-ready iOS and Android apps. "I like Hieu for his smarts, his understanding of quality software, and his communication. He has been available for a discussion at any time of the day, and is always thoughtful and interested." "Fantastic work. Not only has Hieu completed the work I asked, he gave insightful ideas for the project and added suggestions we included in the final version. Hieu makes himself very available, and he is very communicative. 10/10 would hire him again. Quality work, experienced, reliable, and fast." I'm a full stack mobile engineer with 10+ years of experience building iOS and Android apps from idea to launch. I'm a strong fit for founders and product teams who need someone to step in quickly, understand the product goals, make practical technical decisions, and ship stable work. I work well independently or with existing teams. Whether it's building a new app from scratch or turning prototypes / vibe coded apps into working products, I can help you shape the technical plan, build the mobile app, create the backend, launch the product, and iterate after real users start using it.

I bring over 12 years of experience in mobile and systems engineering, with a strong focus on iOS development and cross-platform SDKs. Currently, I am building AI-powered products, honing my skills at the forefront of technology. My track record includes leading teams at prominent companies where I've developed large-scale mobile applications that serve millions of users. I specialize in app reliability, audio and video engines, and I possess deep knowledge of Rust, C++, and Android development. My engineering leadership experience drives my ability to deliver robust, high-impact solutions tailored to client needs. If you're looking for a skilled developer who can create reliable, user-focused applications, let's connect and discuss how I can contribute to your project.

I help SaaS and HealthTech companies design, build, and scale polished, high-performing websites that build trust, communicate value clearly, and support growth. With 10+ years of experience across brand, web, and digital design, I bring a strategic, senior-level approach to every project — from sharpening messaging and improving UX to designing and developing scalable Webflow websites built to perform. My work sits at the intersection of visual design, user experience, and low-code execution, helping teams move from idea to launch with less friction and without the overhead of a large agency. I’ve partnered with startups and growing teams across SaaS, HealthTech, FinTech, and emerging tech, including Webflow, Project Healthy Minds, Apartment List, Stronghold®, and Kept, Inc. Whether you need a new marketing website, a thoughtful redesign, ongoing Webflow support, or a design partner who can add value quickly, I bring both the creative and technical expertise to help make it happen. What I can help with-- Web design + Webflow: •Webflow website design and development •High-converting marketing websites and landing pages •Brand-aligned UI and visual design •UX improvements and site structure refinement •Responsive design and development across desktop, tablet, and mobile •CMS builds and scalable content systems •Website performance, accessibility, and SEO best practices •Third-party integrations •Cleanup and optimization of Webflow builds and systems, including Client-First •Ongoing design and Webflow support for growing teams Branding: •Brand strategy •Brand identity design •Brand development •Visual design systems •Ongoing brand and graphic design support My style is thoughtful, modern, human-centered, and conversion-aware. I care about creating websites that not only look polished, but also feel intuitive, credible, and ready to scale with your business. If you’re looking for a reliable senior partner who can combine strategy, design, branding, and Webflow development in one streamlined process, I’d love to connect.

I build production-ready products fast - using AI tools (Codex, Claude Code) to cut delivery time without cutting quality. 10+ years shipping Node.js, Next.js, React, PHP products that scale and stay maintainable. Average client engagement: 3+ years What I bring that vibe-coding can't: → I review and own every line that ships → Architecture decisions that don't bite you in 6 months → Long-term partner, not a one-sprint contractor

A creative, empathetic, and thorough Engineering Leader with diverse experience across Advertising Analytics, Consumer Hardware, Marketing Automation, Institutional Investment Management, and Startup leadership. Driven to create enterprise software products and services well suited for mass adoption and rapid growth.

I am a full stack developer that could develop any software you can imagine. I handle and build anything tech related for businesses, which includes AI, websites, apps, and automations, and currently handle the tech for tens of businesses. I keep everything I build running, so that is one less thing you ever have to worry about, and I send clear updates on everything. Most importantly, I respect your time. Where others need five meetings, I need one, because I think things through before I ask, and come to you with options, not just questions. Most of my recent work is AI products already shipped and in use. I helped build Hilt Health, an AI platform that integrates 9 AI agents into clinics. I create full stack apps in React, Next.js, React Native, Node.js, and PostgreSQL, and I handle AI and LLM integration end to end: chatbots, voice AI, automations, and more. So whether you want to take an idea from nothing to a live app, add AI to your product, or automate the manual work slowing your team down, I can help. Message me with your idea and let us figure out the first step together.

I’m a Mobile App UI/UX Designer with a decade of experience specializing in Figma app design for iOS and Android platforms. I create modern, clean, and engaging user experiences that help startups, SaaS businesses, and entrepreneurs build successful mobile applications. My Expertise Includes: - Figma Mobile App Design (iOS & Android). - App UI/UX Design and Prototyping. - User Flow & Wireframe Design. - Interactive Figma Prototypes. - App Redesign & UX Optimization. - Design Systems & Style Guides. - App Logo, App Store Screenshots & Presentation Mockups Why Choose Me: ✅ 100% Custom Figma Design (no templates) ✅ Focused on User Experience and Conversion ✅ Quick Turnaround & Clear Communication ✅ Pixel-Perfect, Developer-Ready Design Files Whether you need a complete app UI/UX design, an MVP prototype, or just want to improve your app’s usability, I can help you create a design that’s both visually appealing and strategically effective. Please kindly look at my Upwork portfolio and recently completed projects to get a better idea of my working quality. I would be happy if I could assist you in your very next project! :) Let’s collaborate to design an app that not only looks great but also delivers an outstanding user experience! Thanks By Riaz Uddin

Hello! I'm Alex, a full stack blockchain developer with expertise in smart contract development, bot creation, and front-end integration. Here are some of the skills I bring to the table: Bot Development I’ve built custom bots to monitor DeFi positions, track NFT ownership, and automate transactions across EVM-compatible chains. Smart Contract Development I’ve written, tested, and deployed smart contracts for DeFi protocols, NFT projects, and custom dApps. NFT Projects I've successfully launched multiple NFT projects, handling everything from metadata creation to deployment.​ Front-End Integration I am experienced with ethers/web3.js, and can seamlessly connect smart contracts with front-ends. Technical Consulting I’ve helped dev teams troubleshoot complex issues and keep projects moving efficiently. My goal is to understand your problem and work with you to deliver a clean, effective solution. Looking forward to working together, Alex

AI Development / LLMs / Agents Development Hey guys, I am Volodymyr - Python and Nodejs Software Engineer 👋 My expertise lies in both frontend and backend development, utilizing modern frameworks and tools to deliver high-quality solutions Services: 🔹Discovery Phase 🔹POC / MVP development 🔹Web development 🔹AI/ML solutions 🔹Support and Maintenance Why Work With Me? 🔷 Honesty & Transparency – I believe trust is the foundation of a successful long-term partnership. Clear communication and integrity are my top priorities. 🔷 Thorough Discovery Process – Before starting any project, I conduct an in-depth analysis to ensure a full understanding of your goals and deliverables. 🔷 Security & Quality Standards – I follow industry-standard security practices and rigorous quality assurance processes throughout development. 🔷 Expert Insights & Best Practices – With years of experience, I analyze the market and business objectives to provide a well-rounded, strategic approach tailored to your project. 🔸Technologies: • JavaScript, TypeScript • MERN, Node, Express, Nest, Next • React, Redux • Langchain, Pinecone, ChromaDB • GPT 4o, GPT o1, GPT o3, OpenAI, LLaMA, Google Bard, T5, Roberta.. • DALL-E, MidJourney, Stable Diffusion, Hugging Face • YOLO, Faster R-CNN, Mask R-CNN • DeepSpeech, Jasper, Kaldi, XLNet, T5, ERNIE • ChatGPT integration • Socket.io • Amazon Connect, AWS, EC2, S3, Lambda, DynamoDB • Firebase, Google Filestore • MySql, PostgreSQL, MongoDB, MariaDB, Redis • Kafka • OpenAI API, Stripe API, Paypal API, Google Maps API, Mapbox API • Docker __________ Other keywords to find me: Software development, web development, mobile development, senior developer, CTO, chief technical, technical officer, team-leader, team-lead, lead developer, PWA, User Interface, User Experience, Mock-up, Web, Server, Desktop, Android, iOS, iPhone, Application, Usability, Website, Responsive, Adaptive, Website Prototyping, Wireframe, Update, IT, agile, kanban, scrum.

At IPCS Software we develop custom software for your small to mid-size business with the greatest attention of detail to your business process possible. We will first fully grasp your business process before designing a custom software solution that fits your needs. This allows you to get exactly everything you need out of the software and nothing more. You will not have to pay for features that you will never use. When developing your software solution we will always use the tools that fit your solution the best. This allows for the most efficient and secure software solution. Services: • Software Solution Design • Web Application Development • Desktop Application Development • Mobile Application Development