Hire the best Kotlin Developers in Lisbon, PT
Check out Kotlin Developers in Lisbon, PT with the skills you need for your next job.
- $25 hourly
- 4.9/5
- (77 jobs)
✅ 2500+ hours and still counting ✅ 70+ jobs completed successfully ✅ 100% Job Success (Client Satisfaction Ratio) ✅ High-Quality Work ✅ Budget-friendly ✅ Fluent English Hello! I'm Ahmad Naeem Zaidi, a seasoned mobile developer with over 8 years of hands-on experience in creating robust, user-centric mobile applications. I specialize in Android, iOS, Flutter, React Native, and other cross-platform frameworks, delivering top-tier solutions tailored to meet client goals and user expectations. During the last 8+ years, I have developed many different types of iOS and Android mobile apps. 𝗧𝗮𝘀𝗸 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝗔𝗽𝗽 (𝗹𝗶𝗸𝗲 𝗧𝗼-𝗗𝗼), 𝗙𝗼𝗼𝗱 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝘆 𝗔𝗽𝗽, 𝗥𝗲𝗮𝗹 𝗘𝘀𝘁𝗮𝘁𝗲 𝗟𝗶𝘀𝘁𝗶𝗻𝗴 𝗔𝗽𝗽, 𝗜𝗻𝘃𝗲𝗻𝘁𝗼𝗿𝘀 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝗔𝗽𝗽, 𝗥𝗶𝗱𝗲 𝗜𝗻𝘀𝘁𝗿𝘂𝗰𝘁𝗼𝗿 𝗕𝗼𝗼𝗸𝗶𝗻𝗴 𝗔𝗽𝗽, 𝗢𝗻-𝗱𝗲𝗺𝗮𝗻𝗱 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽, 𝗦𝗽𝗼𝗿𝘁𝘀 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽, 𝗘𝘃𝗲𝗻𝘁 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽, 𝗚𝗿𝗼𝗰𝗲𝗿𝘆 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽, 𝗜𝗻𝘃𝗲𝗻𝘁𝗼𝗿𝘆 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝗔𝗽𝗽, 𝗦𝗼𝗰𝗶𝗮𝗹 𝗠𝗲𝗱𝗶𝗮 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽, 𝗘-𝗖𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽, 𝗙𝗿𝗲𝗲𝗹𝗮𝗻𝗰𝗲 𝗠𝗮𝗿𝗸𝗲𝘁𝗽𝗹𝗮𝗰𝗲 𝗔𝗽𝗽, 𝗔𝗽𝗽𝗼𝗶𝗻𝘁𝗺𝗲𝗻𝘁 𝗕𝗼𝗼𝗸𝗶𝗻𝗴 𝗔𝗽𝗽, 𝗛𝗼𝗺𝗲 𝗦𝗲𝗿𝘃𝗶𝗰𝗲 𝗕𝗼𝗼𝗸𝗶𝗻𝗴 𝗔𝗽𝗽, 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽, 𝗩𝗲𝗻𝘂𝗲 𝗕𝗼𝗼𝗸𝗶𝗻𝗴 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽, and many more. ---------------------------------------------- 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐞𝐬 ✔ Android App Development ✔ iOS App Development ✔ Flutter App Development ✔ React Native App Development ✔ Ionic & AngularJS ✔ Cordova & Cross-Platform Development ✔ UI/UX Design & Integration ✔ API Integration ✔ Mobile App Testing & Debugging ✔ Performance Optimization ✔ App Maintenance & Updates 𝐖𝐡𝐲 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞? Proven Track Record: With 8 years of experience, I’ve successfully delivered a wide range of mobile applications across various industries. My work is characterized by high-quality code, efficient architecture, and a user-focused approach. **Cross-Platform Mastery:** My expertise in Flutter and React Native enables me to develop apps that function seamlessly on both Android and iOS, ensuring a consistent user experience across platforms. **Design-Centric Approach:** I have a keen eye for UI/UX design, ensuring that the apps I develop are not only functional but also aesthetically pleasing and intuitive to use. **Effective Communication:** I prioritize clear, consistent communication, keeping you informed at every stage of the project. Your feedback is integral to the development process. **Commitment to Excellence:** I’m dedicated to delivering high-quality work on time and within budget. Your project’s success is my top priority. ----------------------------- 𝐖𝐡𝐚𝐭 𝐈 𝐎𝐟𝐟𝐞𝐫: **Full-Cycle Development:** From initial concept to deployment, I manage every aspect of the development process, ensuring a seamless experience and a product that meets your needs. **Performance Optimization:** I focus on optimizing app performance, ensuring fast load times, smooth navigation, and a top-notch user experience. **Problem Solving:** I excel at troubleshooting and problem-solving, ensuring your app runs smoothly across different devices and platforms. **Continuous Support:** I offer ongoing maintenance and updates to keep your app relevant and performing optimally as technology evolves. 𝐋𝐞𝐭’𝐬 𝐁𝐫𝐢𝐧𝐠 𝐘𝐨𝐮𝐫 𝐕𝐢𝐬𝐢𝐨𝐧 𝐭𝐨 𝐋𝐢𝐟𝐞: Whether you're looking to build a new mobile app, enhance an existing one, or resolve technical challenges, I have the skills and experience to make it happen. Let’s discuss your project and how I can help you achieve your goals. 𝐆𝐞𝐭 𝐢𝐧 𝐓𝐨𝐮𝐜𝐡: I’m passionate about leveraging cutting-edge technologies to create innovative mobile solutions. If you’re looking for a dedicated mobile developer who can turn your vision into reality, let's connect and explore how I can contribute to your project's success.
Kotlin
Android SDKLaravelMobile App DevelopmentAndroid StudioDartAPI IntegrationQR & Barcode ScannerFlutterSwiftReact NativeJavaAndroidiOS - $35 hourly
- 4.7/5
- (10 jobs)
As the CEO of In-Flight Teams, I specialize in helping Retail and E-commerce businesses scale with omnichannel automation, CRM solutions, and custom software development. My goal is to empower your business with efficient, scalable, and high-impact technology solutions that drive growth and streamline operations. With over six years of experience in full-cycle software development, I bring expertise in building high-performing web applications, integrating seamless automation, and optimizing customer engagement through tailored digital solutions. Whether you're a startup or an established enterprise, I'm here to be your trusted tech partner 🤝. What I Offer: ✅ Custom CRM Solutions to enhance customer engagement and retention ✅ Omnichannel Automation for seamless retail and e-commerce operations ✅ Scalable Web & Mobile Applications tailored to your business needs ✅ Integration of APIs & Third-Party Services to optimize workflows ✅ Data-Driven Strategies for improving customer experience and sales ✅ Ongoing Maintenance & Support for long-term business growth Key Technical Skills: ☑️ Languages: JavaScript, TypeScript ☑️ Frameworks: React, Next.js, Node.js ☑️ Databases: MongoDB, Firebase, PostgreSQL ☑️ APIs: REST, GraphQL, WebSockets ☑️ Tools: Docker, CI/CD, Webpack, Vite ☑️ Automation & CRM: HubSpot, Salesforce, Custom-built solutions Why Work With Me? 🔹 Proven Track Record – Delivered 50+ successful projects globally 🔹 Industry Expertise – Deep understanding of retail & e-commerce challenges 🔹 Tailored Solutions – Focused on custom automation & growth-driven tech 🔹 Scalability & Performance – Ensuring long-term success of your business 🔹 Clear Communication – Transparent, proactive approach with regular updates Let’s collaborate and build high-impact solutions that take your business to the next level! 🚀
Kotlin
FlutterFlowAzure DevOpsAWS ApplicationSupabaseSwiftFirebaseNext.jsMobile AppNodeJS FrameworkReactAndroid App DevelopmentiOS DevelopmentFlutterDart - $35 hourly
- 5.0/5
- (8 jobs)
Hello, I'm Julia, CEO and Founder of GROUP325, a Top Rated Plus Agency. At GROUP325, we specialize in designing and developing cutting-edge digital products using the latest technology. Custom Software Development 💻 We build tailored software to meet your business needs, handling everything from consultation to deployment. Mobile & Web Development 📱💻 We create high-performance mobile and web apps, offering both native and cross-platform solutions. AI & ML Integration 🤖 We implement AI and ML to automate processes, enhance decision-making, and generate insights from your data. UI/UX Design 🎨 We design intuitive and visually appealing interfaces to improve user engagement and satisfaction. Hardware & Sensors Integration 🔌 We connect hardware and sensors with software for real-time data and IoT-driven solutions. Data Science & ML 📊 We turn data into actionable insights with advanced analytics and machine learning. QA and Testing 🛡️ We ensure your software is reliable, secure, and user-friendly through comprehensive testing. MVP Development 🚀 We build MVPs to validate your product idea with essential features quickly. Prototype Development 🛠️ We create prototypes to test and refine your ideas before full development. 📱💻 Technologies We Use: iOS: Swift, Objective-C Android: Java, Kotlin Hybrid App Development: React Native, Flutter, Ionic Web3: Rust & Solidity Backend: Node.js, PHP, Firebase Design: Figma, Adobe Photoshop, Adobe Illustrator, Sketch With no limitations on our tech stack, we deliver the best possible solutions for your digital projects. Let’s create something remarkable together.
Kotlin
Next.jsUX & UIWeb DevelopmentReact NativeJavaReactNode.jsSwiftObjective-CMobile App DevelopmentNative App DevelopmentiOS DevelopmentAndroid App Development - $45 hourly
- 4.9/5
- (53 jobs)
✅ React Native Developer 10+ years of experience ✅ SaaS Mobile App Expert 5+ years ✅ 32 Mobile App Released ✅ React Native Mobile Expert ✅ Built 25+ UX-first Mobile App for 20 companies ✅ On-Time and Cost-Effective Delivery ✅ Future-Proof Solutions Showing a Minimum 42% ROI 🏄🏼♂️ I’m Mykyta, a dedicated Mobile App Developer with 5+ years of experience in SaaS Mobile App Development. Whether it’s building your app from the ground up or modernizing an existing product for iOS and Android, I’m here to help you craft scalable, intuitive, and cross-platform mobile applications. My solutions have contributed to 30%+ user retention growth and helped businesses scale to 100K+ active users. Let’s build something impactful together! 🚀 🏄🏼♂️As a Mobile App Developer and Full Stack Developer with deep expertise in SaaS Mobile App, I bring over a decade of experience in building high-performance cross-platform mobile application. Whether you're looking for a skilled Mobile App Designer or need assistance with Hybrid App Development, I have the right tools and expertise to deliver outstanding products. 🏄🏼♂️I specialize in React Native development, crafting high-performance mobile apps for both iOS and Android platforms. I leverage JavaScript and React JS to deliver user-friendly and scalable solutions, ensuring seamless performance and an exceptional user experience across all devices. ✔️ As a full stack developer, I can build an MVP SaaS mobile application from scratch—one that successfully raised $750k in the first seed round. ✔️ As a Flutter developer and React Native expert, I can redesign an app to boost downloads by over 30% within the first month. ✔️ I can transform an outdated application into a sleek, user-friendly product that became App of the Day on the App Store. ✔️ As a web developer, I help develop a custom business model to double your Gross Profit Margin (GPM). ✔️ I design user-centric mobile apps that have won Dribbble Awards for exceptional UX/UI. 💻 Core Strengths & Technologies React Native, Expo: For rapid, cross-platform development on iOS and Android, saving time and cost. Node.js, AWS: Secure, scalable backends that grow with your user base. API Integration: Experience with Stripe, PayPal, real-time data APIs, and push notifications. CI/CD Pipelines: Efficient, automated deployments to ensure your project stays on track. 🚀 MVP & Product Launch From feature planning to app store deployment, I’ll ensure a smooth launch and rapid market entry with: Clear Milestones & Rapid Iterations for quicker time to market. Robust Authentication and user management for secure access. High-Quality UX/UI to increase conversion rates and retain users. ⚙️ End-to-End Collaboration As a React native Developer, I specialize in React Native development, crafting high-performance mobile apps for both iOS and Android platforms. Architecture & Planning: Translating your idea into actionable plans, focusing on scalability and user-centric designs. Mobile App Developer Implementation: Prioritizing performance, reliability, and creating future-proof solutions. Post-Launch Support: Ensuring your app’s continuous evolution through seamless updates and ongoing improvements. 🤝 Why Partner With Me? Proven ROI: My work consistently delivers at least a 42% ROI for SaaS businesses. Speed & Reliability: With 32 successfully released apps, I showcase a dedication to on-time and cost-effective delivery. Collaborative Process: I value transparent communication, and my experience can help you double your GPM or secure critical funding for your product. Let’s build a Mobile Application that stands out, scales with your business, and creates an exceptional user experience. 📱 Platforms I Work On as a Hybrid App Developer iOS App Development Android Development SaaS Application Development ⚙️ Technologies: React Native, Flutter, Bubble, Kotlin, Expo.io, React, TypeScript, AWS, Firebase, React Native Firebase, React Native WebRTC, Ionic, Full Stack Development, Full stack Python, SaaS Development, React JS, JavaScript, React Native Expo Web Development: I’m also skilled in creating robust, modern web apps using Laravel, WordPress, Shopify, React JS, and JavaScript. Additionally, I can leverage my expertise as a Business Analyst, perform Data Scraping, develop with Python, integrate WebRTC for real-time communication, work with JSSIP protocols, After Effects Animator, provide FinTech consultant payment systems, and Roku developer app to expand your platform. Let’s collaborate to bring your Mobile App Development project to life. Contact me today to start planning your next SaaS mobile success story!
Kotlin
Web Design PluginSmartphoneHybrid App DevelopmentMobile App DesignMobile App DevelopmentFirebaseWeb DesignAPI IntegrationReactJavaScriptAndroid App DevelopmentiOS DevelopmentReact NativeAndroid - $35 hourly
- 5.0/5
- (6 jobs)
I'm the first point of contact of your future coding\design cowboys team. My mission is to swoop in and save the day by solving your design & development problems. Key facts and skills: 🥇 I’ve been on the market for 14 + years; 🌋 Big Data, Node JS, Swift, Java, React Native, Flutter, Blockchain: Solidity, Rust; 🌐 Web3; 💰 E-commerce; 🎬 OTT & Media Entertainment; 💸 AdTech; SSP,DSP, RTB, Adservers 🏠 Real Estate & Proptech. Our team is a pack of the quickest coders on both sides of the Mississippi. They are loaded with experience, and eager to ride to the rescue whenever you're in need of a software solution or web design. Whether you're facing a tight deadline, a tough problem, or just need some extra help, our team is ready to hit the ground running. 🚨 Extra Dets 🚨 - Working experience with plucky startups or seasoned companies; - Finding qualified resources in a short period of time after receiving a request; - Providing clients with personal approaches at reasonable rates. - Having the know-how in the Adtech sphere. Capable of developing DSP, RTB, and SSP.
Kotlin
GolangUX & UIProduct DevelopmentWeb DevelopmentBig DataMobile App DevelopmentAmazon Web ServicesReactPythonJavaNode.jsPHPMySQLPostgreSQL - $50 hourly
- 5.0/5
- (9 jobs)
10 years in Mobile App Development. Leading mobile and cross-functional teams. Growing, supporting and mentoring team members. Well know how business works and help to reach the goals. Transparent communication, clear deadlines and estimates as your expectations. Best combination of speed, quality and costs for you. Experienced of prototyping, designing and development of mobile application. Clear understanding client-server interaction, designing of database, designing of backend (server side) and UI/UX pattens and best practices. Developed mobile applications with server side API, authorization, databases, geo services, maps, in-app purchases etc. in such areas as eCommerce, Fitness, Delivery, Realty Estate, Datings. Hybrid Mobile Development on Flutter (Dart). Backend Development on Python. Telegram bots. Android tech stack: - Kotlin / Java - RxJava / Kotlin coroutines - Jetpack Compose - Dagger 2 / Hilt / Koin - MVVM / MVP / MVI - Databases and ORMs - Clean Architecture - Gradle & much more Other tech stack: - Flutter (Dart) - Python (Django) - PostgreSQL / MySQL
Kotlin
CoroutineCross Functional Team LeadershipProject ManagementTeam ManagementObject-Oriented ProgrammingGitAndroid SDKSmartphoneDartSQLiteFlutterJavaAndroid App DevelopmentAndroid - $50 hourly
- 5.0/5
- (9 jobs)
Hi, I'm Andrey – a full-stack developer with 15+ years of experience in mobile, web, and cloud technologies. I develop end-to-end applications using Swift/Kotlin for mobile, React/TypeScript for web, and AWS for backend services. Working across the entire development stack helps me maintain consistent code quality and eliminate integration problems. My background spans multiple technical domains including embedded systems, graphics programming, and low-level systems development. Core Expertise: - Building native mobile and web applications with cloud backend integration - Managing software projects from initial architecture to deployment - Developing scalable systems with reliability and performance in mind - Adapting to new technologies and technical requirements Significant Project: As lead developer for a startup, I built a messaging platform for thousands of daily users. I developed: - Native iOS (Swift) and Android (Kotlin) mobile apps - React web frontend interface - AWS backend infrastructure with data storage The platform features included: - Text, image, and video messaging - User authentication and profiles - Push notifications across platforms - Secure data storage and transmission The system continues to operate with minimal maintenance, allowing the business to focus on growth. Technical Skills: - Mobile: Swift/SwiftUI (iOS), Kotlin/Jetpack Compose (Android) - Web: React, TypeScript, JavaScript - Backend: AWS (Lambda, API Gateway, S3, DocumentDB) - DevOps: Terraform, CI/CD pipelines - Additional: Firebase, Cloud Messaging, Algolia Search Specialized Experience Professional: - Embedded Systems: Developed GIS/mapping solutions with ARINC standards using C/C++ - Graphics Programming: Built OpenGL libraries and drivers for Radeon using C/C++ - Low-level System Development: Created performance-critical applications Personal Projects: - Computer Vision: Built a CNN-based detection system for a manicure app (2017) - Game Development: Created mobile games using C++ with SDL library - Blockchain: Developed smart contracts on Ethereum, TON, and Zilliqa platforms My Approach: I focus on delivering working solutions that meet business requirements. I've helped startups launch products on time and within budget, and I'm comfortable working independently on projects that span multiple technical domains.
Kotlin
ChatGPT API IntegrationDApp DevelopmentPrompt EngineeringArtificial IntelligenceAWS LambdaFirebaseVue.jsTypeScriptSwiftJavaPythonJavaScriptC++C - $56 hourly
- 0.0/5
- (0 jobs)
Love computer technologies, practice running and surfing in Atlantic Ocean. Cryptography & blockchain is my passion. Proud student of Moscow State University (Faculty of Computational Mathematics and Cybernetics, post graduate diploma in Computer Science, 2020). 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝘀𝘁𝗮𝗰𝗸 Protocols: WebSocket, HTTP2, gRPC Programming Languages: Java 17+, Kotlin 2+, C#, Python 3+, Go Frameworks: Camel, Cassandra Databases and releated: Redis, GraphQl, Mongo/Timescale/PostgreSQL, H2, Scylla Cloud: Apache CloudStack, AWS, Azure CI/CD: Gitlab/TeamCity Config Mgmt: Ansible Web Servers and related: Nginx, Tomcat, Jetty Containers: Docker Compose, Kubernetes DevOps: Custom Unix Bundles
Kotlin
DevOpsProblem SolvingArchitectureDatabase ManagementDatabaseArchitectural DesignPythonJava - $40 hourly
- 0.0/5
- (0 jobs)
Mobile software developer with more than 5 years of experience. I have experience in the development of mobile software on the Android platform and cross-platform, from small applications to giants in the IT industry. Participation in all stages of project development, from project taking to support. I have a broad view in setting up the processes on the project and maintaining a healthy climate in the team. Participation in mentoring and internship programs. I have a great desire to develop as a specialist, to help the development of innovative developers, as well as a desire to design and create masterpieces in the world of mobile applications.
Kotlin
FFmpegRESTful APIArchitectural DesignMobile AppVideo StreamGitDatabaseAndroid SDKFirebaseJavaAugmented RealityFlutterAndroidGraphQL - $35 hourly
- 0.0/5
- (0 jobs)
I'm a developer experienced in writing C/C++ code and designing PCB for embedded platforms. I also have experience in Audio, manly recording and editing.
Kotlin
3D PrintingPCB DesignSTM32ArduinoStudio OneJavaC - $7 hourly
- 0.0/5
- (3 jobs)
My name is Duarte Barbosa, I am 19 years old, and I am a proactive young person who enjoys teamwork and constant learning. I am fluent in English, with an IELTS certification of 6.5. I have a strong ability to adapt and am always open to criticism and learning new things. My academic background includes secondary education in a professional course as a Technician and Manager of Computer Systems Programming. I am currently in the 2nd year of my Bachelor's degree in Computer Engineering at IADE. During my professional course, I had the opportunity to develop projects in various areas of programming, such as web development and mobile application development. As for personal qualities, I would highlight the fact that I am a good listener, not impulsive, and have good analytical skills. Regarding weaknesses, I would mention my low tolerance for injustices and occasionally misinterpreting what people are saying to me.
Kotlin
FiveMLuaDiscord Bot DevelopmentPythonGame DevelopmentCSSHTMLCC++C#JavaScriptDesktop ApplicationWeb ApplicationWeb Development - $20 hourly
- 0.0/5
- (0 jobs)
Experienced Android developer with a strong background in developing and maintaining high-quality mobile applications using Java and Kotlin. Ability to lead development projects from concept to launch, effectively collaborating with QA, development, designer and product management teams to deliver innovative solutions. Experience in developing apps that are optimized for performance, identification and addressing technical challenges.
Kotlin
Mobile AppAndroid AppAndroid SDKAndroidMobile App DevelopmentAndroid App Development - $20 hourly
- 0.0/5
- (0 jobs)
I’m a developer with foundational experience in building mobile and web applications. Whether you’re exploring Kotlin-based Android apps, learning front-end development with React, or managing back-end databases, I’m here to grow and assist with your project. Skills and Tools: * Programming languages: Kotlin, Java, JavaScript, Python, C * Front-end: React * Mobile development: Android * Database: PostgreSQL What I Offer: * Assistance with beginner to intermediate coding challenges * A collaborative mindset to build and learn together * A focus on clear communication to ensure smooth progress
Kotlin
Web ApplicationWeb DevelopmentAndroid App DevelopmentSpring BootSoftware - $10 hourly
- 0.0/5
- (0 jobs)
I'm an Android developer experienced in building Android applications for small and big size companies. - Add new features or fix bugs. - Full project management from start to finish
Kotlin
Mobile AppMobile App DevelopmentApp DevelopmentAndroid App DevelopmentJavaAndroidAndroid App Want to browse more freelancers?
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