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Japan
$65/hr
$4K+ earned
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iOS Engineer, Tech lead at SmartNews, Inc.
【Summarized Professional Experiences】
- While attending the graduate school of Tokyo Metropolitan University, experienced part-time jobs and internship programs in more than one company including Talknote Inc. CyberAgent, Inc. and GREE, Inc.
- After graduating from the graduate school, entered CyberAgent, Inc. and seconded to AbemaTV, Inc. where responsible for the development of iOS applications
- In 2018, transferred to an in-company professional organization named CATS when it is newly established and involved in the launch of multiple new businesses
- Launched WINTICKET, Inc. from scratch in 2019 and established CyberLDH, Inc. being a joint venture company with LDH JAPAN Inc. in 2020
- Working on SmartNews, Inc. since 2021. I'm focus on payment feature for JP users as tech lead
【Skills】
- iOS development with Objective-C and Swift (7 years of work experience)
- Work experience of reactive programming (RxSwift, ReactiveSwift)
- OSS activities (publication and contribution)
- Flux, Redux, MVVM, VIPER-based architecture understanding and work experience
- Work experience of CI / CD (Bitrise / CircleCI, GithubActions)
- Managed a team (5-6 members) as its sub-leader
【Awards and Grants】
- 2018 【CATS MVP Award】
Received this award to be given to an employee who had achieved particularly significant results in the launch of WinTitcket
- 2017 【Monthly MVP, AbemaTV, Inc. 】
Only 3 months after my staffing, won the best player award to be given to an employee among all members of Development Headquarters including engineers, designers and directors
- 2017 【Highest Award in Training Program for New Graduates】
The problem of how to complete an iOS application in 2 weeks was given to all teams consisting of 2 members responsible for the server and 1 member for the iOS application; Responsible for the development of iOS applications as a member of the team which received the highest award to be given to the best one among about 50 members
- 2015 【First Prize in Swift2 UI/UX Challenge】
Awarded the first prize in the development of UI-related libraries in a hackathon when participating in an internship program hosted by CyberAgent, Inc.
United States
$85/hr
100%
Job Success
$2K+ earned
Available now
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Click Here!
Always ready to take on eCommerce and front-end development projects, including full UI/UX design.
🛒 eCommerce Development
- Shopify (Custom Themes, Liquid, Apps, Sections)
- WordPress / WooCommerce (PHP Development, Custom Plugins, Custom Themes, Speed Optimization)
- BigCommerce, Wix, Squarespace, OsCommerce
- Store setup, redesign, migrations, checkout optimization
💻 Frontend Development
- HTML5, CSS3, JavaScript, TypeScript
- React.js, Next.js
- Tailwind CSS, Bootstrap
- Responsive & mobile-first development
- Cross-browser optimization
- Clean, scalable component-based architecture
🎨 Design & UX
- Mobile App UI/UX (iOS & Android)
- Web UI/UX (Landing pages, dashboards, eCommerce flows)
- Figma, Adobe XD, Photoshop
💡 Why Clients Hire Me
- Strong combined skillset: PHP + Frontend + eCommerce + UI/UX
- Clean, scalable, and fast development
- Pixel-perfect design implementation
- Conversion-focused mindset
- Excellent communication and timely delivery
- Ability to handle entire project lifecycle: idea → design → development → launch
Over 10 years of experience for IT.
$60/hr
100%
Job Success
$100K+ earned
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Arnis V.
has worked
.
Hey there!
I am highly experienced Firebase, Ember.js and Node.js software developer. Been working exclusively with Ember.js since 2014. I enjoy making beautiful software, love good design and have necessary HTML, CSS skills to implement that.
Since 2017 I've also been working with Google Firebase.
In total I've been writing software for last 20 years. Started with JavaEE, moved to Ruby, then iOS and now – Ember.js (single page Javascript) apps mostly with Google Firebase, Firestore, Cloud Functions as a serverless solution and database. Also worked with MongoDB and SQL – PostgreSQL, MySQL.
$89/hr
$0 earned
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Flutter, iOS, Team Leader, 5+ experienced Mobile developer with confidence in Enterprise solutions and integration
Taiwan
$60/hr
$0 earned
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As a senior developer with 8+ years of experience in building high-performance mobile applications, I specialize in creating seamless user experiences using Flutter and Native iOS (Swift).
What sets me apart is my ability to bridge the gap between complex business logic and elegant technical execution. Having managed my own software projects and business operations, I understand that a successful app isn't just about clean code—it's about scalability, user retention, and time-to-market.
My Core Expertise:
Mobile: Flutter (Riverpod, Drift, GetX) & Native iOS (Swift/SwiftUI).
Backend: Node.js (Express/NestJS) for robust API development.
Frontend: React.js for internal dashboards and web admin panels.
Architecture: Clean Architecture, MVVM, and performance optimization.
DevOps: CI/CD pipelines, App Store/Google Play deployment.
Whether you are a startup looking to build a Minimum Viable Product (MVP) or an established business needing to scale your existing app, I provide end-to-end development services that prioritize code quality and maintainability.
$60/hr
Available now
Offers consultations
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I design innovative software solutions and tackle technical challenges head-on, leveraging over 35 years of diverse experience in the tech industry. My journey includes roles such as CEO, CTO and Executive Director of Engineering. I have developed strategies that not only enhance productivity for clients but also drive profitability for startups and companies alike. I excel at absorbing new technologies and quickly turning ideas into actionable plans. I have successfully directed (and built hands-on) complex projects across various sectors, focusing on delivering value and ensuring customer satisfaction. If you need a results-oriented professional who can navigate any technical landscape, let’s connect to discuss how I can help you achieve your goals.
$100/hr
$0 earned
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I am an iOS developer with over 8 years of experience building mobile applications for a variety of clients from individuals to corporations to the government sector. I have a wide range of experience when it comes to all things iOS development. My home base is in Canada, but I spend half of my year working remotely while travelling to various countries.
• 90% of my projects have been with Swift and UIKit
• 10% of my projects have been with SwiftUI and Combine
• I am a strong communicator, and I look for regular communication in a client.
$90/hr
$0 earned
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iOS develop base on objective C
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iOS develop base on objective C
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iOS develop base on objective C
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United States
$70/hr
$0 earned
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I’m a software developer experienced in building iOS apps, websites, dashboards, and custom software for businesses of all sizes. I’ve worked with major brands like Papa John’s, as well as small businesses and organizations that need reliable, modern software solutions.
Whether you need a new app, a modern website, improvements to existing software, or custom integrations, I can help.
Knows Swift, SwiftUI, Combine, React, JavaScript, Python, Java, Ruby, Firebase, Google APIs, App Store integrations, Uber integrations, TestFlight, App Store submissions, and modern web frameworks.
Experienced with full-stack development, backend development with Python/Java, custom dashboards, user management, document uploads, order management systems, email routing, automation, API integrations, iOS release support, beta testing workflows, and getting apps ready for launch.
Highly responsive, supportive, and easy to work with. I also bring a strong UX/design eye to every project, so your product works well and feels polished.
$80/hr
100%
Job Success
$400K+ earned
Offers consultations
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Sergey S.
has worked
.
Greetings! I am a 3D Web Developer and graphics engineer (🔥 among the Top 1% of developers on Upwork 🔥) with over 10,000 hours of expertise. My focus is on creating high-performance, immersive applications. Whether you need a WebGL Three.js interactive experience or a cutting-edge WebGPU engine, I bridge the gap between desktop-grade graphics and the browser.
🚀 𝐓𝐡𝐞 𝐒𝐲𝐧𝐞𝐫𝐠𝐲 𝐨𝐟 𝟑𝐃 𝐖𝐞𝐛 & 𝐆𝐚𝐦𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭
As a senior 3D Web Developer, I don't just build sites; I engineer complex ecosystems. For the past 7 years, I have been actively programming game servers. This deep experience in Multiplayer allows me to handle complex networking tasks like rollback, snapshots, and state sync. Recently, I spent 2 years building a web-based game platform with a custom ECS, where I was responsible for WebGPU integration and a custom WebTransport server protocol. This background as a C++ Game Developer ensures that every WebGL Three.js project I touch is optimized at a systems level.
🛠 𝐌𝐚𝐬𝐭𝐞𝐫𝐲 𝐢𝐧 𝐖𝐞𝐛𝐆𝐋 𝐓𝐡𝐫𝐞𝐞.𝐣𝐬 & 𝐖𝐞𝐛𝐆𝐏𝐔
In the realm of a 3D Web Developer, performance is everything. I leverage WebGPU to push the limits of modern browsers, utilizing WGSL and GLSL for custom pipelines.
◾WebGL Three.js: I create stunning 3D product rendering, photorealistic 3D animation, and interactive 3D design.
◾WebGPU: Expertise in render bundles, compute shaders, and advanced Web application architecture.
◾React & Next.js Ecosystem: I specialize in React Three Fiber (R3F) to integrate WebGL Three.js into modern, scalable applications. As a front end developer, I ensure seamless state management and high-speed delivery for every Web application.
🎮 𝐌𝐮𝐥𝐭𝐢𝐩𝐥𝐚𝐲𝐞𝐫 & 𝐂++ 𝐆𝐚𝐦𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞
My journey as a C++ Game Developer covers large-scale desktop application and standalone application development. I understand the needs of an Xbox developer or a video game studio. As a Multiplayer specialist, I focus on:
◾Game Networking: Implementing Online multiplayer game design with high-performance protocols.
◾Engine Tech: Working with Babylon and custom C++ frameworks.
◾Multi-Platform: Bringing Multiplayer logic to mobile game environments (iOS/Android).
💎 𝐀𝐝𝐯𝐚𝐧𝐜𝐞𝐝 𝐆𝐫𝐚𝐩𝐡𝐢𝐜𝐬 & 𝐎𝐩𝐭𝐢𝐦𝐢𝐳𝐚𝐭𝐢𝐨𝐧
An elite 3D Web Developer must master the math behind the pixels. Using Vectors, Quaternions, and Matrices, I implement:
◾Rendering: PBR, Shadow mapping, Ray tracing, and Path tracing.
◾Optimization: LOD, Spatial acceleration structures (BVH, Octree), and GPU Instancing.
◾Geometry: 3D modeling in Blender, Autodesk 3ds Max, or Maya, and procedural generation.
🤝 𝐖𝐡𝐲 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞?
Being both a C++ Game Developer and a 3D Web Developer means I offer architectural certainty. Whether I’m collaborating with a Python developer on high-performance backends or assisting a Unity web developer team with complex graphics, I solve the hardest tasks. If you are looking for a Multiplayer expert to build a mobile app development hit or a WebGPU pioneer for a technical Web application – let’s chat.
I provide the same level of care whether I'm acting as a graphic design consultant for 3D modeling or as a lead C++ Game Developer. As an Expert-Vetted talent, I offer free consultations to ensure we are an excellent fit. Let's bring your WebGL Three.js vision to life with Multiplayer capabilities that scale.