Hi, I am james Haruki, a highly accomplished full-stack developer with over 6 years experience, specializing in Web, Mobile, AI agent development, as well as Desktop applications. Skilled in building scalable SaaS web platforms using modern front-end and back-end technologies. Highly proficient in developing intelligent AI agents and desktop apps with Electron, Tauri. Known for consistently delivering projects on time and within budget, with a strong ability to work both independently and collaboratively in fast-paced environments.…Hi, I am james Haruki, a highly accomplished full-stack developer with over 6 years experience, specializing in Web, Mobile, AI agent development, as well as Desktop applications. Skilled in building scalable SaaS web platforms using modern front-end and back-end technologies. Highly proficient in developing intelligent AI agents and desktop apps with Electron, Tauri. Known for consistently delivering projects on time and within budget, with a strong ability to work both independently and collaboratively in fast-paced environments.

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App DeveloperApp Store Optimization SpecialistApp Designer

Sumit Singh

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 Ghaziabad, India

App DeveloperApp Store Optimization SpecialistApp Designer

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Expert in: Kotlin, SQLite

Hi there! I am Sumit Singh, an Android developer with over 4 years of experience in mobile app development. I enjoy turning complex problems into clean, user-friendly apps and collaborating with cross-functional teams to deliver features that delight users. I have shipped multiple Android apps with offline storage, navigation, and thoughtful UI improvements, and I stay curious about new technologies and best practices. I am dedicated to building robust, scalable apps, integrating RESTful APIs and third-party libraries, and ensuring accessibility and usability for all users. I thrive in team environments and love sharing knowledge with colleagues to drive quality and innovation.…Hi there! I am Sumit Singh, an Android developer with over 4 years of experience in mobile app development. I enjoy turning complex problems into clean, user-friendly apps and collaborating with cross-functional teams to deliver features that delight users. I have shipped multiple Android apps with offline storage, navigation, and thoughtful UI improvements, and I stay curious about new technologies and best practices. I am dedicated to building robust, scalable apps, integrating RESTful APIs and third-party libraries, and ensuring accessibility and usability for all users. I thrive in team environments and love sharing knowledge with colleagues to drive quality and innovation.

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Web DeveloperApp DeveloperFull Stack Developer

Web DeveloperApp DeveloperFull Stack Developer

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Expert in: Dart, Flutter, GitHub + 8 more

I am a Flutter developer with 3 years of experience building and shipping cross-platform applications across mobile, web, and desktop using Flutter and Dart. I am experienced in business systems, location-based products, REST API integration, Firebase, Supabase, and scalable architecture. I focus on performance optimization, maintainable code, and production-ready delivery.…

Expert in: Flutter, Dart, Rust + 11 more

I'm Aref Mozafari, a Flutter Application Developer with 5+ years building decentralized mobile apps, Web3 video call SDKs, blockchain-powered P2P apps, and financial tools. I specialize in secure, high-performance solutions using Flutter, Dart, and blockchain tech. I'm collaborative, agile, and passionate about delivering robust, scalable products. I enjoy exploring open-source, building encryption plugins in Rust, and crafting intuitive UI/UX.…I'm Aref Mozafari, a Flutter Application Developer with 5+ years building decentralized mobile apps, Web3 video call SDKs, blockchain-powered P2P apps, and financial tools. I specialize in secure, high-performance solutions using Flutter, Dart, and blockchain tech. I'm collaborative, agile, and passionate about delivering robust, scalable products. I enjoy exploring open-source, building encryption plugins in Rust, and crafting intuitive UI/UX.

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App DeveloperBack-End DeveloperProgrammer

 London, United Kingdom

App DeveloperBack-End DeveloperProgrammer

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Expert in: Android, Dart, Flutter + 8 more

Hi, I’m Jason Elder, a seasoned iOS/Android app developer and consultant who thrives on turning ideas into reliable mobile solutions. I’ve led projects across startups and large agencies, from initial concept through architecture and deployment, with a strong focus on clean code, scalable design, and delightful user experiences. My background spans cross‑platform development (Flutter, Dart, native iOS/Android), 3D/Unity work, and integration with back‑end services like Supabase and various CMS/e‑commerce platforms. I enjoy solving complex problems and delivering robust mobile experiences that meet real business goals.…Hi, I’m Jason Elder, a seasoned iOS/Android app developer and consultant who thrives on turning ideas into reliable mobile solutions. I’ve led projects across startups and large agencies, from initial concept through architecture and deployment, with a strong focus on clean code, scalable design, and delightful user experiences. My background spans cross‑platform development (Flutter, Dart, native iOS/Android), 3D/Unity work, and integration with back‑end services like Supabase and various CMS/e‑commerce platforms. I enjoy solving complex problems and delivering robust mobile experiences that meet real business goals.

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App DeveloperFull Stack Developer

App DeveloperFull Stack Developer

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Expert in: Android, Dart, Flutter + 7 more

I'm a polyglot Software Engineer with over 12 years of experience building software and technology used by millions globally. I have experience building greenfield products for startups as well as contributing new features to already shipped products. I have experience building different kinds of applications: ride-hailing and mobility applications, e-commerce applications, dating applications, last mile delivery applications, land mapping applications to mention a few. My super power comes not just from my technical ability but also from my deep understanding of business needs and how to translate them into products and features that ultimately drive business growth. This gives my clients the feeling of not just another freelancer but a technical team member.…I'm a polyglot Software Engineer with over 12 years of experience building software and technology used by millions globally. I have experience building greenfield products for startups as well as contributing new features to already shipped products. I have experience building different kinds of applications: ride-hailing and mobility applications, e-commerce applications, dating applications, last mile delivery applications, land mapping applications to mention a few. My super power comes not just from my technical ability but also from my deep understanding of business needs and how to translate them into products and features that ultimately drive business growth. This gives my clients the feeling of not just another freelancer but a technical team member.

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Full Stack DeveloperBack-End DeveloperFront-End Developer

 Melbourne, Australia

Full Stack DeveloperBack-End DeveloperFront-End Developer

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Expert in: TypeScript, JavaScript, Ruby on Rails + 15 more

I am a versatile Full Stack Software Engineer with strong backend development and cloud architecture experience across healthcare, finance, and SaaS through consulting engagements. I specialize in delivering scalable solutions from inception to production within aggressive timelines and operate with an AI-first engineering workflow, leveraging AI tooling to accelerate delivery while owning architecture, code quality, and reviews. I value pragmatic engineering, stakeholder relationships, and reliability. I have led multi-tenant Rails platforms, built AI-assisted workflows, and implemented CI/CD pipelines and observability to support rapid growth and safer production.…I am a versatile Full Stack Software Engineer with strong backend development and cloud architecture experience across healthcare, finance, and SaaS through consulting engagements. I specialize in delivering scalable solutions from inception to production within aggressive timelines and operate with an AI-first engineering workflow, leveraging AI tooling to accelerate delivery while owning architecture, code quality, and reviews. I value pragmatic engineering, stakeholder relationships, and reliability. I have led multi-tenant Rails platforms, built AI-assisted workflows, and implemented CI/CD pipelines and observability to support rapid growth and safer production.

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Full Stack DeveloperWeb DeveloperFront-End Developer

Full Stack DeveloperWeb DeveloperFront-End Developer

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Expert in: Dart, Flutter, SQL + 8 more

I’m Moundhir Bachene, a Flutter developer with over four years of experience delivering production-grade mobile solutions. I’m passionate about clean architecture, offline-first design, and robust financial logic, and I enjoy turning complex requirements into reliable, scalable apps. I’ve built distribution, inventory management, and food delivery platforms with hardware integrations and strong local persistence. I thrive in cross-functional teams, care about code quality and performance, and love crafting delightful user experiences across both consumer and merchant apps.…I’m Moundhir Bachene, a Flutter developer with over four years of experience delivering production-grade mobile solutions. I’m passionate about clean architecture, offline-first design, and robust financial logic, and I enjoy turning complex requirements into reliable, scalable apps. I’ve built distribution, inventory management, and food delivery platforms with hardware integrations and strong local persistence. I thrive in cross-functional teams, care about code quality and performance, and love crafting delightful user experiences across both consumer and merchant apps.

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App DeveloperWeb DeveloperFront-End Developer

 Cluj-Napoca, Romania

App DeveloperWeb DeveloperFront-End Developer

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Expert in: iOS, Swift, C++ + 3 more

I am a Senior iOS Engineer with 8+ years of experience building secure, scalable, and user-focused apps at Revolut, Strike, and Halcyon Mobile. I am passionate about clean, high-performance native experiences using Swift, SwiftUI, Combine, and modern architectural patterns. I excel at leading projects end to end, mentoring teammates, and shipping features that improve security, usability, and growth for millions of users.…I am a Senior iOS Engineer with 8+ years of experience building secure, scalable, and user-focused apps at Revolut, Strike, and Halcyon Mobile. I am passionate about clean, high-performance native experiences using Swift, SwiftUI, Combine, and modern architectural patterns. I excel at leading projects end to end, mentoring teammates, and shipping features that improve security, usability, and growth for millions of users.

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Web DeveloperFront-End DeveloperBack-End Developer

 Oldham, United Kingdom

Web DeveloperFront-End DeveloperBack-End Developer

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Expert in: JavaScript, Node.js, HTML5 + 25 more

I'm Junaid Imtiaz, an IT professional with over 25 years of experience designing and delivering enterprise web applications. I have spent more than a decade in leadership roles, guiding teams through complex technical challenges and delivering high-quality solutions. Based in Oldham, UK, I balance business needs with technical excellence, driving robust architectures, secure implementations and scalable delivery processes.…I'm Junaid Imtiaz, an IT professional with over 25 years of experience designing and delivering enterprise web applications. I have spent more than a decade in leadership roles, guiding teams through complex technical challenges and delivering high-quality solutions. Based in Oldham, UK, I balance business needs with technical excellence, driving robust architectures, secure implementations and scalable delivery processes.

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SingerDouble BassistArranger

 Manchester, United Kingdom

SingerDouble BassistArranger

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Expert in: Acapella, Backing Vocal, Freelance Gig + 8 more

Andrew Paterson is a singer, double-bass player, music arranger and choral director from Manchester, UK. With over 30 years experience of singing and playing at a high level, Andrew plays double bass (jazz and classical) and has a wide enough vocal range to sing most tenor or bass parts. He also loves arranging his favourite music, having particular interests in choral music, brass ensembles, jazz, and making performable English translations of obscure folk fusion songs.…Andrew Paterson is a singer, double-bass player, music arranger and choral director from Manchester, UK. With over 30 years experience of singing and playing at a high level, Andrew plays double bass (jazz and classical) and has a wide enough vocal range to sing most tenor or bass parts. He also loves arranging his favourite music, having particular interests in choral music, brass ensembles, jazz, and making performable English translations of obscure folk fusion songs.

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Data AnalystData ScientistData Visualizer

Mohammed Ah Hassan Rayon Hussain

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 New York City, United States

Data AnalystData ScientistData Visualizer

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Expert in: SQLite, Tableau, PostgreSQL + 13 more

I am a Senior Data Engineer with extensive experience across diverse industries, currently optimizing data processes at Walmart, and resolving over 60 data incidents monthly across iOS, Android, and Web platforms. I extract and process large datasets to ensure reliability and accuracy. I excel in SQL, Python, and ETL, implementing real-time data solutions and predictive modeling to accelerate decision-making, improve data integrity, and enhance customer insights.…I am a Senior Data Engineer with extensive experience across diverse industries, currently optimizing data processes at Walmart, and resolving over 60 data incidents monthly across iOS, Android, and Web platforms. I extract and process large datasets to ensure reliability and accuracy. I excel in SQL, Python, and ETL, implementing real-time data solutions and predictive modeling to accelerate decision-making, improve data integrity, and enhance customer insights.

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Back-End DeveloperWeb DeveloperData Scientist

 London, United Kingdom

Back-End DeveloperWeb DeveloperData Scientist

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Expert in: Python, API, JavaScript + 18 more

Hi, I'm Brendon Stead. I am a full-stack developer with a unique background in elite sports coaching, blending resilience, strategic planning, and a drive for excellence with technical expertise in Python, JavaScript, and ML to build scalable web and cloud-based solutions. I have designed and deployed systems across the Python ecosystem with applications in Full Stack Development, Machine Learning, and Data Science, and I have a strong track record of leading cross-functional teams, managing client relationships, and delivering technology solutions that align with complex business needs. Today I focus on backend architecture and end-to-end delivery for healthcare and health-tech apps, mentor junior developers, and collaborate across product, research, and design to ensure user privacy, security, and regulatory compliance while driving innovation and robust CI/CD practices.…Hi, I'm Brendon Stead. I am a full-stack developer with a unique background in elite sports coaching, blending resilience, strategic planning, and a drive for excellence with technical expertise in Python, JavaScript, and ML to build scalable web and cloud-based solutions. I have designed and deployed systems across the Python ecosystem with applications in Full Stack Development, Machine Learning, and Data Science, and I have a strong track record of leading cross-functional teams, managing client relationships, and delivering technology solutions that align with complex business needs. Today I focus on backend architecture and end-to-end delivery for healthcare and health-tech apps, mentor junior developers, and collaborate across product, research, and design to ensure user privacy, security, and regulatory compliance while driving innovation and robust CI/CD practices.

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Web DeveloperApp DeveloperBack-End Developer

Web DeveloperApp DeveloperBack-End Developer

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Expert in: .NET, Xamarin, API + 9 more

As a skilled full stack developer with extensive experience in designing, developing, and deploying robust web and mobile applications, I excel in leveraging technologies such as .NET, C#, Xamarin, MAUI, and Azure. My expertise in HTML, CSS, JavaScript, and jQuery allows me to create responsive and dynamic user interfaces, while my proficiency in Angular and Ionic enhances my ability to develop high performance, cross platform applications. I am adept at building and integrating RESTful Web APIs and have a strong background in database management using SQL Server. My experience extends to cloud services with Azure and includes foundational knowledge in AWS and Firebase, enabling me to deliver scalable and reliable solutions. Additionally, I possess a basic understanding of React, WinForms, and Figma. My commitment to continuous learning and innovation drives me to adopt new technologies and methodologies, ensuring the delivery of cutting edge solutions.…As a skilled full stack developer with extensive experience in designing, developing, and deploying robust web and mobile applications, I excel in leveraging technologies such as .NET, C#, Xamarin, MAUI, and Azure. My expertise in HTML, CSS, JavaScript, and jQuery allows me to create responsive and dynamic user interfaces, while my proficiency in Angular and Ionic enhances my ability to develop high performance, cross platform applications. I am adept at building and integrating RESTful Web APIs and have a strong background in database management using SQL Server. My experience extends to cloud services with Azure and includes foundational knowledge in AWS and Firebase, enabling me to deliver scalable and reliable solutions. Additionally, I possess a basic understanding of React, WinForms, and Figma. My commitment to continuous learning and innovation drives me to adopt new technologies and methodologies, ensuring the delivery of cutting edge solutions.

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Back-End DeveloperFull Stack DeveloperProgrammer

Back-End DeveloperFull Stack DeveloperProgrammer

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Expert in: JavaScript, MySQL, PHP + 7 more

Professional with a degree in Mechatronics Engineering (UNICAMP), specialization in France, and an MBA from FGV. Has 13 years of experience as a full-stack developer, building complete systems with business intelligence, smart routing, and ERP integration. International experience in companies focused on digital security, telecommunications platforms, and high-availability systems. Developed ERP projects, systems, and web solutions since 2000, working with various technologies in both UNIX and Windows environments. Fluent in four languages, with strong command of multiple programming languages, databases, and IT infrastructure. Also recognized for strong communication and team management skills, leading projects and aligning solutions with business needs.…Professional with a degree in Mechatronics Engineering (UNICAMP), specialization in France, and an MBA from FGV. Has 13 years of experience as a full-stack developer, building complete systems with business intelligence, smart routing, and ERP integration. International experience in companies focused on digital security, telecommunications platforms, and high-availability systems. Developed ERP projects, systems, and web solutions since 2000, working with various technologies in both UNIX and Windows environments. Fluent in four languages, with strong command of multiple programming languages, databases, and IT infrastructure. Also recognized for strong communication and team management skills, leading projects and aligning solutions with business needs.

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