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10 years of progressive work experience in software development and product management in the fintech industry. Interested in AI and Web3 projects. I design and build AI-powered applications. Hold Bachelor's degree in Computer Science. Live in Calgary, Canada. • AI: Google AI Studio, Gemini API, Imagen for generative image pipelines, Anthropic Claude API, OpenAI API for LLM integration, prompt engineering, AI-powered product development • AI-Assisted Dev Tools: Claude Code, GitHub Copilot, Codex • Web3: Solidity, Foundry, Web3.js/Ether.js, ERC-20, ERC-721, EVM, dApps, DeFi, NFT, Blockchain APIs • Languages: HTML/CSS, JavaScript, TypeScript, JSON, PHP, MySQL, PostgreSQL, Python • Developer Tools: Next.js, Git, Figma, Jira, Trello, Scrum, Cloudflare, Azure, Visual Studio Code

Top Rated Full Stack Engineer | Fintech, AI, SaaS, Mobile, WordPress & Shopify Over the past 8+ years, I've helped startups, enterprises, and government organizations build scalable software products across fintech, travel, eCommerce, AI, Web3, and SaaS. My experience includes Mastercard/Visa payment-switch systems, government platforms, mobile applications, blockchain products, AI integrations, and high-traffic web applications serving users worldwide. Whether you need a React application, mobile app, AI integration, blockchain solution, SaaS platform, WordPress website, or Shopify store, I bring the technical expertise and product mindset needed to turn ideas into reliable, scalable products. 📌 Selected projects are listed by name due to Upwork profile guidelines on external links. Project links, screenshots, and details are available in my Portfolio section. I can also share relevant case studies and technical examples based on your requirements during our conversation. 🚀 Featured Projects • Busbud (Global Travel Marketplace) Contributed to a large-scale travel platform serving global users, built with React, Next.js, Node.js, React Native, and AWS. • AXR Wallet / Axir Wallet Blockchain-powered wallet ecosystem with secure Web3 integrations and mobile applications. • EVDC Network Mobile application supporting EV charging infrastructure, network management, and user engagement. • Proud Profits Business growth and operational management platform focused on performance and efficiency. • OxyFit eCommerce platform for fitness and wellness products with optimized customer experience and conversion-focused design. • MD Fashion Enterprise-scale fashion eCommerce platform delivering premium online shopping experiences. 🏢 Enterprise & Government Projects • TPS Worldwide Worked on banking switch systems and payment-processing infrastructure supporting Mastercard and Visa transaction networks. • Tahaluf Al Emarat Built and maintained government applications with strict security, performance, and reliability requirements. • MoonGaming Developed Web3 gaming infrastructure, blockchain integrations, and backend services supporting digital asset ecosystems. From startup MVPs to enterprise-grade platforms, I enjoy solving complex technical challenges and building products that balance scalability, performance, and user experience. 💡 Core Expertise ✔ Full Stack Development (React, Next.js, Node.js, TypeScript) with scalable frontend & backend architecture ✔ AI, Automation & SaaS/MVP Development for modern product builds and rapid launches ✔ Mobile App Development (React Native, iOS & Android) for cross-platform applications ✔ E-commerce Development (WordPress, WooCommerce & Shopify) with custom integrations and performance focus ✔ Blockchain, Web3 & Crypto Applications including wallets and decentralized systems ✔ APIs, System Integrations & Backend Engineering (REST, GraphQL, third-party services) ✔ UI/UX Implementation, Performance Optimization & Cloud-based Scalability Industries I've worked with include Fintech, Government, Travel, Healthcare, eCommerce, Web3, SaaS, Logistics, and Startups. Why clients hire me: ✔ Top Rated Freelancer with a proven delivery record ✔ Clear communication and transparent project management ✔ Strong focus on code quality, scalability, and maintainability ✔ Ability to contribute from product planning through deployment ✔ Long-term support and technical partnership If you're looking for a developer who can contribute beyond coding and help turn your vision into a scalable, successful product, let's discuss your project.

📞 Free 15-minute Exponentially Helpful Consultation (not selfish sales call) 📞 Free technology audit for your business 📊 Just invite me to your job!✅ Technologies ✅Blockchain, Ethereum, Solidity, Smart Contracts ✅ Java, Python, PHP (Wordpress, Laravel), C#, ASP.net, C++. Databases: MySQL, PostgresSQL, MSSQL, Oracle. ✅ VueJS, Angular, Javascript, other design frameworks. Figma and Adobe XD for designing UI and then translating them to HTML/CSS ✅ Flutter, Ionic as well as PWA (Progressing Web Applications). 🏆Expert Developer and CTO for your business growth🚀 "Shai is the right person for my organization, When I need any kind of software development or tech consulting. Shai is always available and there to help me and my team. What I love the most working with him is the accuracy of his product development estimation and his high motivation for new projects, making my projects easier and much more actionable." - Daniel P., serial entrepreneur Does your business or startup need its technology built out with a strict deadline? ❗️Stop ✋ ❗️ Have you ever over-paid for an app only to receive: 🚨 buggy features 🚨 🚨 badly written code 🚨 🚨 not very high-quality app / software product 🚨 And been super frustrated🤯 And angry 😡 — Just because you now had had to once-again pay somebody to clean up the mess? 😥 ⚠️ Warning - here are the pitfalls of software development most development would rather you not know: ⚠️ The painful truth is, that when dealing with software development, there are many 💣minefields 💣 we must navigate: ✅ In order For the project to be a success! ✅ In order for the product to be delivered on-time⏳ and on-budget💰! ✅ In order that the users, clients, and customers and other stakeholders to be using the system or the app, and to be happy with it, and come back for more! In order for the above goals to be accomplished, you need not just a developer: ✅ You need a seasoned product manager ✅ Systems analyst ✅ Development manager ✅ Research and Development director ✅ and Chief Technology Officer - a true insider, that will walk you through all of the above pitfalls, to avoid: 💵 losing money, ⏱ losing time, and 📊 losing resources; to make sure that your software not only rolls out in time, but also works well and draws users into the system and has them come back and use your product. In short - for your project to be a success! Hi! 💁‍♂️ Nice to meet you :) I’ve spent the last 20 years, in various roles and capacities, building: ✅ Smart Contracts & Blockchain Development ✅ Web Applications (including dynamic websites, as well as simple websites) ✅ Mobile Applications (native and web-based) ✅ e-Commerce Development And other technology systems — to the satisfaction of my many corporate, and private, clients. Working with me, you’ll get access to 20+ Years of Proven App Development Experience. "Shai is a fantastic developer and CTO. He is dedicated to your cause, understands your desires and also your needs- even the ones you don't know yet. Strongly recommend!" - Gilad Israeli, founder of WeBus Much more than a software developer: ✍ I walk my clients through a discovery process at the beginning of each project, we communicate often about progress and do periodic demos, all the way to project completion. ✍ ✍ Using my experience and many years of “learning the hard way” navigating the software world, I help my clients with consulting and coaching as they go through the process of developing their technology ✍ ✍ most importantly- I advise on aligning your technology to your business needs - to make sure that the product is in line with you business so that you can be profitable in the long run.✍ 🏅Why Work With Me? Reliability Pledge.🏅 If you work with me, we will have frequent meetings in which we test your product together, and you'll provide me with feedback and any changes or improvements. A few extra strengths that could help you by specifically working with me: ✅ I've lead and have the ability to lead a team of developers, or a group of developers, for larger projects ✅ I can analyze your business, and find the most optimal way for you to use technology based on your business needs ✅ I have a system-wide, business-swide vision which adds to the improvement of business processes and product quality ✅My goal is your success. Your success is my success! I've you've come this far in reading my profile, as a gift of appreciation, allow me to offer you a free 30 minute coffee session on the house :) Just invite me to your job!

I am a full-stack and mobile engineer who builds systems that hold up in production , not just in demos, 8+ years , 60+ apps shipped , 30+ live on App Store & Play Store. My edge is not the stack. It's the architecture mindset , modular code, clean API contracts, scalable cloud infrastructure, and CI/CD pipelines that let you ship fast without breaking things. 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈 𝐬𝐞𝐫𝐯𝐞𝐝: 🏥 Healthcare · 🛒 eCommerce · 🚚 Logistics · 📲 On-demand · 🏢 Enterprise SaaS · 💰 Fintech · 🎓 EdTech · 🏠 Real Estate · 🍔 Food & Restaurant · 🚗 Ride-hailing · 💪 Fitness & Wellness · 🔒 Cybersecurity · 🏗️ Construction & Field Service 📱 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 ✅ Flutter (Dart) & React Native, production-grade cross-platform development ✅ Background geofencing · Real-time BLE sync · Offline-first architecture · Live location tracking ✅ State management (BLoC, Riverpod, Redux, MobX) · Push notifications · Deep linking ✅ Stripe · PayPal · In-app purchases · Google Maps · Firebase ✅ Real-time chat · WebSockets · Social auth (Google, Apple, Facebook) ✅ REST APIs · GraphQL · Third-party SDK integration 🌐 𝐖𝐞𝐛 & 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 ✅ Front-end: React.js · Next.js · Vue.js · TypeScript · Tailwind CSS ✅ Back-end: Node.js · NestJS · Express.js · FastAPI · Django · GraphQL ✅ Databases: PostgreSQL · MySQL · MongoDB · Firebase · Redis ✅ Cloud: AWS (EC2, S3, Lambda, RDS) · Google Cloud · Heroku ✅ Microservices · REST & GraphQL APIs · Serverless architecture ✅ CI/CD · Docker · Kubernetes · Git · Agile 𝐖𝐡𝐚𝐭 𝐲𝐨𝐮 𝐠𝐞𝐭: ✅ Clean, documented, handover-ready code ✅ Architecture explained, not hidden ✅ Communication that doesn't vanish mid-project 𝐌𝐞𝐬𝐬𝐚𝐠𝐞 𝐦𝐞 𝐰𝐢𝐭𝐡 𝐲𝐨𝐮𝐫 𝐛𝐫𝐢𝐞𝐟 , 𝐭𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐚𝐩𝐩𝐫𝐨𝐚𝐜𝐡 𝐛𝐚𝐜𝐤 𝐰𝐢𝐭𝐡𝐢𝐧 𝟐–𝟒 𝐡𝐨𝐮𝐫𝐬. 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬 Flutter Developer · React Native Developer · Full-Stack Engineer · Mobile App Development · Cross-Platform Development · Next.js · Node.js · NestJS · FastAPI · Django · REST API · GraphQL · API Integration · Firebase · AWS · Google Cloud · PostgreSQL · MongoDB · Redis · Docker · Kubernetes · CI/CD · TypeScript · BLoC · Riverpod · WebSockets · Microservices · Serverless · iOS · Android · App Store · Play Store

I'm an HR recruiter who turns hiring headaches into hiring wins. Need an IT recruiter who actually delivers? I've helped tech companies cut time-to-hire by 32-46% while improving candidate quality - not sacrificing it. What I do as a Recruiter🎯 As your IT recruiting and talent sourcing partner, I handle everything from LinkedIn recruiting to executive search. I'm a headhunter and talent acquisition specialist who fills engineering, product, C-level, and go-to-market roles for Web3, SaaS, fintech, blockchain, and cybersecurity companies worldwide. My recruiter approach combines aggressive candidate sourcing with a systematic process. I function as your virtual assistant for recruitment operations - managing sourcing, screening, interview coordination, offer negotiation, and onboarding. This recruiter doesn't just send resumes and vanish. Services & Recruitment Expertise 💼 📌IT Recruiting & Technical Talent Sourcing: As your dedicated Talent Sourcer, Recruiter, HR and Headhunter, I build industry-specific candidate pipelines through advanced LinkedIn recruiting, Boolean search mastery, competitor mapping, and community infiltration. My talent acquisition strategies reach passive candidates your competitors miss. 📌Full-Cycle Recruitment Management: Beyond candidate sourcing, I coordinate interviews, conduct video prescreens, align stakeholders, and maintain weekly pipeline monitoring. Think recruiter + virtual assistant + HR partner in one. 📌Executive Search & Leadership Hiring: When recruiting senior talent, I bring headhunter-level discretion and sophisticated compensation negotiation. My executive search methodology targets CTOs, VPs of Engineering, Chief Product Officers, and technical founders with proven scaling experience. 📌Interview Calibration & Hiring Process Optimization: This recruiter builds standardized assessment protocols, ensuring consistent evaluation criteria across your team. Better interview-to-offer ratios through systematic talent acquisition, not guesswork. Real Recruiter Results 📊 My IT recruiting and talent sourcing track record: ⚡ 46% faster hiring velocity for precision equipment tech company (3 placements) ⚡ 33% time-to-hire improvement for data security software firm ⚡ 32% faster closes for advertising tech platform ⚡ 21-day average fill time across concurrent recruitment engagements ⚡ Built a sustainable hiring infrastructure enabling 10x growth scalability These numbers come from disciplined recruiter execution - aggressive candidate sourcing, relentless LinkedIn recruiting, and headhunter persistence regardless of market difficulty. Technical Recruiting Specializations 🚀 Engineering Roles: As an IT recruiter specializing in technical talent sourcing, I fill full-stack developers, blockchain engineers, protocol architects, DevOps specialists, security researchers, and technical co-founders. Product & Growth: My recruiting expertise covers product managers, growth marketers, agile coaches, business development leaders, and go-to-market executives. Executive Search: When you need C-level talent acquisition, I, as a headhunter, deliver, targeting leadership with proven track records in competitive markets. How I Work as Your Recruiter 🤝 I integrate as your embedded talent sourcer and HR Recruiter, not a distant vendor. You get weekly pipeline reviews, proactive problem-solving, and transparent candidate sourcing metrics. My LinkedIn recruiting, interview coordination, and offer management run seamlessly alongside your internal recruitment team. As both recruiter and virtual assistant for recruitment operations, I handle the administrative burden - job descriptions, ATS management, candidate experience, hiring analytics - so your leadership focuses on evaluation and selection. Why Choose Me As An IT Recruiter? ✨ Specialized Headhunter Focus: I'm not a generalist recruiter dabbling in IT recruiting. I exclusively serve tech companies competing for scarce technical talent. My candidate sourcing channels reflect years of relationship-building in specific communities. Complete Talent Acquisition Ownership: You're hiring a recruiter who owns the entire process -assessment design, interview calibration, reference checks, offer negotiation, closing support. Not just LinkedIn profiles dumped in your inbox. Speed Meets Quality: My talent sourcing balances headhunter urgency with thorough evaluation. Aggressive recruitment timelines don't compromise candidate quality. Every engagement maintains the same standard of excellence. Long-Term HR Partnership: Post-hire, I support onboarding and provide replacement guarantees. This recruiter relationship extends beyond signatures into an ongoing talent acquisition partnership. Ready to Hire Smarter? 💪 If your hiring velocity lags expectations, if candidate sourcing produces generic applicants, or if you lack a dedicated recruiter, let's fix it. Your competition already has its recruiter advantage. Time to build yours. 🎯

I'm a Senior Consultant with 10+ years of experience in diverse industries. I am a good team player who loves to work on interesting missions, using my expertise to provide value to customers. I lead and get involved in human-sized teams, where I propose and enforce architectural decisions to deliver better solutions while ensuring they scale. My flexibility is one of my greatest assets; I'm defined as sociable, a team player, someone who knows how to adapt to any environment, and always willing to put in the work required for continuous improvement. I'm very professional whenever needed and at other times a good joker, soccer player, and writer. Taking initiatives that will advance the team and/or the project is what defines me the most while working collaboratively. My main skills are oriented toward Solutions Architecture, System Integration, Salesforce, Cloud computing, Software Development, Apache Camel, and Apache Airflow. Other accomplishments: - I coached over 100 people in tech. - Crossed +1 million people reached on StackOverflow in 2023. - Top contributors in the NumericaIdeas community (2022). - Top 3% of Upwork freelancers in 2021 (Top Rated Plus badge). - Top 20% Google Translate Contributors in 2017. - More than 100 tech articles/videos published on the internet.