Hire Vetted Design and Creative Engineers at Upstaff - Page 1

• 11+ years in native iOS (Swift), Android (Kotlin), and cross-platform (.NET MAUI, Xamarin) mobile development.
• Expert in platform migration (Xamarin to .NET MAUI, PCL to .NET Standard) and performance optimization.
• Proficient in MVVM architecture, RESTful APIs, custom controls, and AI-assisted development tools.
• Collaborated with international teams, notably German engineering teams at Miele and IBM Romania
• Engineering diploma in Electrical Engineering, skilled in C#, C++, .NET technologies, and DevOps tools like Git and Azure DevOps.

• Ranked among the Top 10 local freelance Python engineers at the age of 17.
• Contributed to projects with a multi-million user base, focusing on backend scalability and production stability.
• Successfully launched and supported a USA educational platform used by students, tutors, and academic institutions.
• Represented the development team at the international Wefi Beyond Banking Summit, presenting a fintech product to a global audience.
• Built and maintained production-grade backend systems, automation tools, Telegram bots, and API integrations for fintech, crypto, payments, and business operations.

• Senior product designer with 10+ years in enterprise SaaS, AI, healthcare, and consumer products, specializing in complex workflow design and AI-driven user experiences.
• Led AI onboarding and agent-assistance workflows at Nextiva, achieving up to 50% reduction in missed calls and 20% faster call handling.
• Proficient in Figma, Adobe CC, Cursor, Claude, ChatGPT, GitHub Copilot, HTML, CSS, JavaScript, and design systems like Sedona.
• Experienced in design systems, human-AI interaction, conversational UX, prototyping, usability testing, and data-driven UX strategies.
• Mentored 80+ designers via ADPList and led design teams through critiques, coaching, and cross-functional collaboration.

• Expertise in end-to-end UX/UI design with strong skills in Figma, prototyping, and design systems for mobile and web platforms.
• Applied inclusive design principles and accessibility standards (WCAG, AODA) in product development from research to implementation.
• Led mixed-methods research and co-design workshops, translating insights into personalized, user-centered digital solutions.
• Experience collaborating with product and engineering teams to optimize usability and technical feasibility through iterative prototyping.
• Skilled in information architecture, user flows, and interaction design, demonstrated by redesigning complex media and sustainability platforms.

• Expertise in AI education and generative AI tools, facilitating practical training for diverse audiences.
• Proficient in live streaming workflows, digital media production, and AI-powered content creation.
• Skilled in managing digital media operations and leading teams in high-pressure live broadcast environments.
• Experience integrating emerging AI technologies into digital content strategies to enhance engagement.
• Background in Chemistry Technology with additional training in Radio and Television Broadcasting Technology.

• Senior Software Engineer with 10+ years in cross-platform mobile development (.NET MAUI, Xamarin, Flutter), C#, and .NET.
• Led migration of legacy Xamarin apps to .NET MAUI and Flutter, modernizing enterprise mobile solutions.
• Designed reusable mobile architectures, integrated REST APIs, Azure AD, Microsoft Intune MDM, and native iOS libraries.
• Implemented CI/CD pipelines with Azure DevOps and GitHub Actions, enhancing automation and deployment workflows.

• Expert in designing scalable systems with dark/light modes and auto-layout precision for SaaS and AI platforms.
• Proven track record in building complex, data-dense dashboards and AI-powered middleware systems that enhance operational efficiency and eliminate downtime.
• Skilled in creating developer-ready deliverables including pixel-perfect handoffs, interactive prototypes, and detailed UI logic specifications.
• Experience in automating workflows such as OAuth token lifecycle management and AI-driven data ingestion triage, ensuring zero service disruptions and data integrity.
• Strong focus on bridging product strategy with high-conversion UI execution, specializing in enterprise AI platforms.

• Founding design engineer with 6+ years in product design and full-stack delivery specializing in AI-native products and LLM integration.
• Expertise in React, Next.js, TypeScript, Golang, Python, Flutter, Tailwind, and AI tools like OpenAI API, Genkit, and Transformers.js.
• Led AI chat feature at KW Berlin with 4M+ MAU, driving 100-min user sessions and $30k/week projected revenue via A/B testing and MDE analysis.
• Built and launched dramance.app solo, an AI-powered interactive visual novel platform with end-to-end system architecture and monetization design.
• Skilled in design systems (Figma tokens, auto-layout), and UX methodologies including CJM, SUM, and A/B testing with MDE.

• Senior Software Engineer & Associate Technical Lead with 9+ years in Flutter/Dart, leading scalable mobile/web apps for 18,000+ users.
• Expert in Clean Architecture, CI/CD (GitHub Actions, Codemagic), Agile methodologies, and cross-functional team leadership.
• Proven track record in modernizing legacy systems, mentoring engineers, and integrating RESTful APIs and Google Maps API.
• Author of flutter_date_kit package, enhancing date/time utilities for Flutter developers.
• Strong background in cross-platform development (iOS, Android, Web) using Flutter, React Native, and Xamarin, with experience in testing, DevOps, and performance optimization.

• Mobile developer with 7+ years in Android, iOS, Xamarin, Flutter, and .Net technologies.
• Experienced in backend API and microservices development using ASP .Net Core and Azure.
• Led architectural design and tech support across multi-platform mobile projects.
• Proficient in Kotlin, .Net 6, Xamarin.Forms, and cross-platform frameworks like MvvmCross.
• Strong foundation in computer science with degrees in Information Systems and Multimedia Web Design.

• Lead Software Engineer with 10+ years in cross-platform enterprise app development using .NET MAUI, Xamarin, and Blazor.
• Expertise in C# (.NET 6/7/8), XAML, React Native, Azure, Firebase, and microservices architecture.
• Proven impact: 35% latency reduction in mobile workforce apps and 40% stability improvement via Firebase Crashlytics integration.
• Skilled in CI/CD pipelines, automated testing (Katalon), and cloud deployments on AWS and Azure.
• Strong background in offline-first mobile solutions, AI agent workflows, and multi-platform app lifecycle management.

• Data Analyst and Software Engineer skilled in Python, SQL, Power BI, and modern web technologies (JavaScript, HTML, CSS) for data-driven solutions.
• Experienced in exploratory data analysis, building responsive software, and creating impactful graphic designs for branding.
• Proficient in Microsoft Excel and computer graphics design, integrating technical and creative skills to enhance decision-making.
• Strong background in data visualization and software development best practices, delivering efficient and scalable products.
• Committed to continuous learning and applying innovative methodologies to solve complex real-world problems.

• Technical Team Lead with experience in designing and delivering scalable mobile applications using Kotlin, Java, Flutter, React Native, and Kotlin Multiplatform (KMP).
• Proficient in Android development with expertise in MVVM, MVI, Clean Architecture, and backend API development using Node.js and Ktor.
• Skilled in integrating complex features such as payments, location services, and real-time communication (WebSockets, WebRTC, Agora) across diverse domains
• Experienced in mentoring teams, managing client expectations, and delivering production-ready applications with high code quality and performance optimization.

Designed and delivered scalable web and mobile applications using React, Next.js, Node.js, Flutter, and Supabase. Built secure APIs, AI-powered solutions, authentication systems, payment integrations, and responsive user interfaces. Improved application performance, optimized databases, automated workflows, and successfully delivered multiple full-stack projects while collaborating with cross-functional teams to create reliable, user-focused software that met business goals and enhanced customer experiences.

I am a senior software architect and blockchain automation engineer , with over 20 years of professional development experience and 4+ years dedicated to crypto, trading bots, WebSocket systems, and SaaS automation platforms.

My career spans enterprise systems, mobile applications, cloud analytics, authentication infrastructure, and large-scale data platforms — evolving into high-performance blockchain automation and bot engineering across Solana and Ethereum ecosystems.

I specialize in building:

• Real-time token tracking systems
• Telegram trading bots
• Solana Token Bundling, Deployment and tracking platforms,
• Rug detection & dev-sell intelligence
• MongoDB-driven analytics platforms
• Event-driven SaaS backends

All systems are designed for 24/7 uptime, restart persistence, and real trader usage — not prototypes.

Core Expertise

Blockchain & Crypto

• Solana Web3.js
• Ethereum (EVM)
• Pump.fun SDK
• Token metadata indexing
• Market cap & liquidity tracking
• Dev-sell detection
• Rugpull analysis
• ATH / ROI analytics
• Wallet behavior monitoring

Bot & Automation Systems

• Trading bots
• Token sniper trackers
• Telegram bots
• Volume simulation bots
• Alert engines
• Subscription lifecycle managers

Real-time ranking systems

• QA with 4+ years of experience in manual testing for mobile and web applications, specializing in functional, regression, integration, and API testing using tools like Jira, Swagger, and Postman.
• Strong expertise in SDLC and STLC processes, Agile methodology, and defect management, ensuring high-quality product delivery in financial, industrial, logistic and healthcare domains.
• Proficient in RESTful and SOAP API testing, validating request-response structures, authentication, and performance under various scenarios.
• Hands-on experience in designing and executing test cases for complex applications such as financial management, business valuation, and waste management systems..

• Senior Web Designer with 15+ years in front-end development, specializing in HTML5, Bootstrap 4&5, CSS/SCSS, Angular Material Design, React.js, WordPress, and Shopify development.
• Proven expertise in full HTML development lifecycle for dynamic web projects, integrating responsive design and UI/UX best practices.
• Skilled in design tools including Photoshop, Adobe XD, Figma, and Adobe Illustrator, enhancing creative and technical project delivery.
• Strong background in project management and client relations, delivering high-impact web solutions for diverse industries.
• Experience with version control (GitHub) and modern web frameworks, ensuring maintainable and scalable codebases.

• 5+ years in customer service and administration with hands-on experience in digital communication tools and CRM systems like Gorgias and Shopify.
• Proficient in data management, order tracking, and issue resolution using platforms such as ShipHero and Shopify,
• Experience collaborating in UI/UX design projects, applying user research and feedback to enhance digital product usability and customer engagement.
• Skilled in Microsoft Office, Google Workspace, and CRM software, supporting efficient administrative and procurement operations.
• Strong background in coordinating digital communications and managing online community engagement, leveraging technical tools to optimize customer satisfaction.

• Over 5 years of experience in customer service and digital communication, with hands-on involvement in UI/UX design and online community coordination.
• Proficient in CRM tools like Gorgias and Shopify, with practical skills in managing order tracking systems such as ShipHero.
• Skilled in user research and interface design, contributing to enhanced customer engagement and experience improvements.
• Strong background in administrative and procurement processes, supporting operational efficiency and vendor management.
• Certified in UI/UX Design and Customer Relationship Management, leveraging multidisciplinary expertise to bridge technical and customer-focused solutions.

Senior Front-End Developer (React Native mobile / React web) with 10+ years of experience. Skilled at JavaScript, TypeScript, and React. I’ve worked on various projects and have extensive expertise. I have experience developing projects from scratch through to market release.

• Senior React Native engineer with 9+ years in mobile and web development, including 6+ years with React Native in production.
• Delivered cross-platform applications across healthcare, fintech, real estate, and logistics domains, including patient-facing clinical trial apps (HIPAA-compliant).
• Experience includes real-time features using WebRTC, offline-first data handling, and performance optimisation for mobile apps.
• Worked with React, Next.js, GraphQL, and AWS; contributed to mobile architecture and led frontend teams.

• 6+ years with Front-end/Mobile: cross-platform applications, React Native, React.
• IoT & hardware: BLE and Wi-Fi device pairing (Soft-AP, Protobuf), custom native bridges (iOS/Android) for hardware communication - Ninja Pro Connect app with 100K+ downloads
• Short-form video: TikTok-style educational app with HLS playback (Expo Video), player pooling, lazy loading of video batches, and quality fallback for low-end devices
• Production tooling: push notifications (Firebase + Notifee, Android foreground/keep-alive services), analytics/session replay (Mixpanel, LogRocket, Sentry, Bugsnag), CI pipelines, ESLint + pre-commit quality gates.
• Familiar with New Architecture (Fabric, TurboModules, JSI, Hermes)

• Senior React Native Developer with 16 years in software development, specializing in cross-platform mobile applications for iOS and Android using React Native and Expo.
• Proficient in JavaScript, TypeScript, Node.js, and backend technologies including Express.js, MongoDB, and MySQL, with extensive experience in API design and integration.
• Expertise in AI-assisted development tools (Claude Code, Cursor, GitHub Copilot) to accelerate delivery and improve code quality.
• Skilled in modern CI/CD pipelines (GitLab, GitHub Actions, Fastlane, Azure DevOps) and testing frameworks (Jest, Detox) ensuring robust, maintainable software.

• Full-Stack Developer with 3 years of experience specializing in Python (FastAPI, Flask), Java (Spring Boot with Hibernate), and modern JavaScript frameworks (React, Next.js), delivering scalable web applications and microservices.
• Proficient in API integrations, real-time communication (WebSockets, SSE), and cloud-native development using Docker, AWS, and CI/CD pipelines with GitHub Actions.
• Hands-on expertise in RDBMS (PostgreSQL, MySQL), NoSQL (MongoDB, Redis), and advanced front-end state management (Redux, Redux-Saga, RTK Query) with UI/UX optimization and performance tuning.

currently growing my tiktok page with edits of sermon messages i edited myself, i trained myself also had a good teacher who taught me, i also edit videos of my pastors sermon in church also with our sunday highlights as smart edits to post on our church group. its been a good journey so far and im lookng forward to get great opportunitues and also try my best to secure a good jobs and do my best also

Innovative Senior Software and AI Engineer with 13+ years of experience across backend, frontend, mobile development, and system design. Skilled in Python, Node.js, PHP, C#, Java, cloud-native architectures, and modern frameworks including React, Next.js, Angular, React Native, and native Android. Experienced in building scalable applications, developer tools, and intelligent automation that improve SDLC efficiency. Strong background in CI/CD, OOP, performance optimization, and testing frameworks for high-impact engineering teams.

Innovative Senior Software and AI Engineer with 13+ years of experience across backend, frontend, mobile development, and system design. Skilled in Python, Node.js, PHP, C#, Java, cloud-native architectures, and modern frameworks including React, Next.js, Angular, React Native, and native Android. Experienced in building scalable applications, developer tools, and intelligent automation that improve SDLC efficiency. Strong background in CI/CD, OOP, performance optimization, and testing frameworks for high-impact engineering teams.

• Senior .NET / Full-Stack Engineer with 12+ years delivering scalable enterprise and mobile solutions using .NET Core, MAUI, Flutter, and React.
• Expertise in microservices, cloud-native architectures (AWS/Azure), and WISP network design with MikroTik and PPPoE.
• Proven track record building ERP systems, AI-driven microservices, and cross-platform mobile apps with real-time APIs.
• Strong leadership in remote Agile teams, managing full SDLC, CI/CD pipelines, and distributed system deployments.
• Ongoing B.Sc. in IT Engineering, skilled in C#, Kotlin, Swift, Docker, Git, and advanced networking for ISP infrastructure.

• iOS Developer with 2+ years of experience delivering high-performance VPN and utility apps, proficient in Swift, Objective-C, and modern concurrency (async/await).
• Skilled in multiple architectures and design patterns including MVVM, MVC, VIPER, TCA, and Coordinator.
• Expertise in full mobile development lifecycle from UI implementation based on Figma designs to App Store deployment, with strong integration experience (Adapty, Amplitude, AppsFlyer, Firebase).

• Proficient in front-end and back-end development with expertise in HTML, CSS, Ruby, Java, and Vim, complemented by 3+ years of hands-on experience in software engineering.
• Currently engaged in networking projects, applying practical knowledge of system integration and network protocols to enhance infrastructure reliability.
• Strong foundation in Information Technology from Karatina University, emphasizing software development lifecycle (SDLC) and modern programming paradigms.
• Skilled in using Blender for 3D modeling, demonstrating versatility in both software development and digital content creation.
• Fluent in English and Kiswahili, facilitating effective communication in diverse team environments and cross-functional collaborations.