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freelance Application developers

John G.

United States

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Senior Freelance Application Developer

More than 8 years of experience and four years of specialization in cloud technology, DevOps, and lidar point clouds. I design, develop, and maintain cloud computing systems that support the organization's innovative vision and mission of connecting local service providers and customers. I use platforms such as AWS and GCP to implement cloud adoption plans, determine cloud application design, and create systems for managing, monitoring, and maintaining the cloud system. I also ensure high availability, load balancing, and redundancy for the cloud system, eliminating single-point failures and achieving a 99.9% service level agreement. One of my core competencies is lidar point cloud, which I apply to various projects involving segmentation and clustering. Also, I mentor and consult students on how to use the Point Cloud Library, program the RANSAC algorithm, draw bounding boxes around objects, and integrate with self-driving car and flying car technologies. I have earned nano degrees in self-driving car engineering, flying car engineering, and React from Udacity, as well as a post-graduate program in cloud computing and DevOps from Caltech. I am passionate about solving complex problems and delivering impact at a global scale for the local service marketplace.

Application Architecture • 8 yrsAI • 8 yrsPython • 8 yrsSQL • 10 yrsJavaScript • 10 yrsKubernetes • 8 yrsDocker • 8 yrsC++ • 5 yrsSoftware architecture • 4 yrsMachine learningData ScienceNode.jsAzureGoogle Cloud PlatformCloudflareAWS LambdaCloud ArchitectureAWSHTML/CSSDatabaseServer managementServer AdministrationMicrosoft SQL Server

+19

Dom D.

Canada

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Senior Freelance Application Developer

Serverless technologies (especially AWS one) offer cheap and scalable solutions to any client developer (Web or mobile). Doing it right with IaaS is still however difficult. I'm looking forward to sharing my know-how to boost developers productivity.

Application Architecture • 10 yrsAWS • 10 yrsAWS CDK • 3 yrsJava • 10 yrsLit Element • 10 yrsAWS DynamoDB • 6 yrsAWS Lambda • 6 yrsUnity 2D • 4 yrsAWS CloudFrontAWS API GatewayUnityAmazon EC2TypeScriptTerraformHTML/CSSGoogle App EngineGoogle Cloud Platform

+13

Christian C.

Argentina

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Senior Freelance Application Developer

I'm Christian Carnero, a seasoned software architect with over 20 years of experience in leading and coaching engineering teams. Specializing in back-end development and data/application integration, I've worked across a wide range of environments, from startups to more traditional companies. This has equipped me with a balanced view for tackling both technical and business challenges. As you can verify in my resume, I have a strong focus on developing multitenancy SaaS platforms in Cloud environments. Beyond technology, I excel in coordinating teams and overseeing the comprehensive planning and execution of projects, doing everything within my power to meet set objectives, costs, and timelines. I particularly enjoy architecting solutions and writing code alongside my team.

Application Architecture • 10 yrsSoftware Architecture • 10 yrsLeadership • 10 yrsKubernetes.NET CoreLLMLLaMANode.jsMongoDBRedisRabbitMQTypeScriptDockerApache KafkaCI/CDAWSJiraGraphQLRESTful API

+15

Dimitrios V.

Greece

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Senior Freelance Application Developer

I’m passionate about computer architecture design, distributed computing, HPC and anything related to low-level engineering or requiring to achieve low latency performance. For programming languages I’m using C, C++-17/20 and Python3 on a daily basis. From time to time I also implement CUDA kernels. My preferred compiler is clang along with its tools (clang-tidy and so on) and for build systems I prefer to use Makefiles/CMAKE or Meson+Ninja. I'm comfortable writing assembly in any architecture and I’m familiar with Vector extensions for various architectures(x86/64, Risc5, ARM). In general I have a solid understanding of the underlying hardware components and how to utilize them for performance gains. This also includes concurrency, synchronization primitives and crafting bare metal kernels. In the past I also had to implement compiler infrastructures (including JIT using LLVM-C++-API) for various architectures and emulators. **Finally, one of my #1 skills is that I have many years of different startup environment experience. I believe startups are the best way to progress fast in your career as long as you are able to absorb and process the massive amount of information broadcasted. In the end a startup is no different than a big corporation without the available resources.**

Application Architecture • 3 yrsC++ • 10 yrsC • 10 yrsAssembly • 10 yrsMakefile • 7 yrsCMake • 6 yrsCUDA • 4 yrsConsulting • 4 yrsSoftware architecture • 3 yrsPython 3 • 3 yrsARMContinuous IntegrationContainersDockerStartupsContinuous DeploymentStartup developmentTensorFlowCI/CDPyTorchRisc VLinuxLLVMPythonGit

+21

Kritul R.

United States

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Freelance Application Developer

• 14+ years of enterprise application development, maintenance and migration experience • Ability to look at the bigger picture and think creatively keeping the whole product view • Clear understanding of micro-service architecture and design solutions using various architecture patterns • Extensive Domain Knowledge of Health Care (Specialty Care, Pharmaceutical) • Strong technical knowledge in Microsoft .NET framework, C#, MVC, WCF and ASP.NET coding • Constructed a RESTful API to manage infrastructure services using C#. • Excellent knowledge of source control concepts such as Branching, Merging, Labeling/Tagging and Integration • Develop Clean Code using architectural patterns, principles of Functional and Object Oriented paradigm, with SOLID Proven track record of wearing many hats to get the job done • Worked on SDLC Methodologies like Agile (Scrum, Kanban), Waterfall, and other processes. • I am detail-oriented, self-motivated, team oriented professional who can work independently, also I am confident of my ability to quickly learn and implement modern technologies • Team player with the ability to work in a fast-paced environment

Windows Application • 10 yrsAWS • 3 yrsNode.js • 3 yrsVue.js • 2 yrsSQL • 10 yrs.NET Core • 5 yrsJavaScript • 5 yrsAzure • 2 yrsAngular • 2 yrsPython • 2 yrsLESSMicrosoft SQL ServerWCF (Windows Communication Foundation) ServiceADO.NETASP.NET MVC 5APIElasticsearchDynamoDBAWS DynamoDBAWS LambdaASP.NET CoreASP.NETASP.NET Web API

+19

Anderson F.

Brazil

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Senior Freelance Application Developer

I am a software engineer with strong frontend development experience. I have extensively learned and used React in my past 7 years as a software engineer. I'm good at understanding business rules, solving problems and building pixel-perfect UIs, with an eye on usability and testing coverage. In the realm of backend, I have a lot of experience with PHP and significant experience also with Node Express & Nest.js. In addition, I am also proficient with relational databases (MySQL, PostgreSQL) and MongoDB. Have worked most of the time in startups, but also in large teams. More details about my experience with the main technologies I've worked with so far: * 10 years of software engineering experience; * 5+ years working as a full-time frontend engineer, plus 5 years working as full-stack developer; * 7+ years of React library experience + related libraries (Redux, Zustand, Router, DOM); * 7+ years of experience with Typescript; * 4+ years of experience setting up Webpack applications; * 10+ years using CSS, HTML5 and variants; * 9+ years using Git; * 5+ years of experience using Jest, Enzyme and React Testing Library for tests; * 7+ years of PHP/Javascript/MySQL stack experience; * 5+ years of experience PHP frameworks such as Zend, Laravel, Lumen, PhalconPHP, Codeigniter; * 4+ years of experience creating and consuming Rest APIs / Web services; * Significant experience with MongoDB; Docker; Amazon Web Services and Nest.Js, GraphQL; * Experience working with Linux (9+ years) and MacOS (3 years) systems; * 6+ years of experience with SQL Databases (Mysql or Postgres); * Knowledge of Design Patterns, SOLID Principles and Algorithms; * A lot of experience using Jira and working in Agile teams; * Familiarity with SOA, microservices and micro-frontends architectures;

Web Application • 10 yrsReact • 10 yrsAuthentication • 10 yrsAWS • 4 yrsRedux • 4 yrsHTML/CSSPHPSQLMySQLUnit TestingGitHubTypeScriptJiraJavaScriptJestWebpackApache HTTP ServerFront-EndBabelMicro FrontendsWordPressLaravelPayment gatewayReact NativeVue.jsSass

+22

Albert G.

Armenia

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Senior Freelance Application Developer

I am a highly skilled software architect and developer with 19+ years of expertise in various languages and frameworks such as C#, Java, C++, Angular, and React. I have experience working with both RDBMS and NoSQL databases, as well as cloud computing services like AWS and Azure. Throughout my career, I have held positions as a Technical Lead, Principal Software Engineer, Chief Software Architect where I have successfully implemented various improvements and optimizations to enhance system performance and stability. I have also played a key role in architectural decisions and training team members on different technologies and patterns. I hold a Master's and Bachelor's degree in Information Technologies and Applied Mathematics.

Application Architecture • 10 yrsDatabase • 10 yrsSoftware Architecture • 10 yrs.NET • 10 yrsSolution Architecture • 10 yrsMicroservices • 10 yrsAWS • 8 yrsAngular • 7 yrsAzure • 6 yrsMySQLMongoDBJavaScriptCircleci.NET CoreArchitectural DesignASP.NET CoreAWS ArchitectC#SilverlightTypeScriptOctopus DeployRESTful APIAzure Blob StorageAzure logic appsElectronic Design AutomationAzure WebsitesOraclePostgreSQLAmazon EC2JenkinsAmazon S3Windows ServicesActiveMQAmazon RDSDynamoDBMicrosoft SQL ServerApache KafkaAWS CloudFrontAWS LambdaAws route 53

+36

Emir K.

Serbia

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Senior Freelance Application Developer

I'm a seasoned software architect and developer located in Sarajevo, Bosnia and Herzegovina. With over 20 years of experience under my belt, I'm well-versed in everything from leading teams to flying solo on projects. I get a kick out of taking customer ideas and transforming them into something even better during the development journey. One of my specialties is identifying potential design flaws and refining user interfaces until user manuals become a thing of the past. My journey has taken me through a variety of roles and projects. I've done everything from software consultation and app design to data scraping, data mining, and full-stack development. Notable ventures include my work with the RapTToR agency, where I've developed large-scale systems, UI/UX enhancements, and marketing software. At Dare2Play, I took the lead on building an online crypto multiplayer gaming platform, managing game development teams, and architecting CI/CD setups. I've also lent my expertise to ventures like Goleudy Ventures, LLC, where I tackled image processing and created tools for image segmentation. I have worked with various platforms, languages, and frameworks. I'm well-acquainted with technologies like HTML5, PHP, Node.js, Python, Unity, Blockchain, and more. In the ever-evolving world of technology, I find myself constantly energized to take on new challenges and make innovative contributions. My goal is to not only meet but exceed expectations, and my extensive track record speaks for itself. Looking forward to the next exciting venture.

Application Architecture • 10 yrsApplication SecurityPHP • 15 yrsHTML/CSS • 10 yrsSQL • 10 yrsJavaScript • 10 yrsSoftware Architecture • 10 yrsDatabase • 10 yrsNode.js • 5 yrsPython • 3 yrsSEOAutomationMachine LearningApp StoreWeb ScrapingPayment gatewayReverse EngineeringE-commerceUI designWeb DevelopmentFull StackDevelopmentAndroid SDKBack-EndSoftware DevelopmentGame DesignBlockchainProblem solving skillsUser ResearchUX/UI DesignData EngineeringDesktop ApplicationsMobile App DevelopmentAIDevOpsHTML5APIDesignHTML5 CanvasTypeScriptBootstrapGameDockerReactWeb ServiceCryptocurrencySolidityApi testingTailwind cssMySQLPostgreSQLShellScrapyServer managementData AnalysisServer AdministrationData ScienceData VisualizationData structureData analyticsTerraformData ModelingCI/CD

+59

Antonio O.

Portugal

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Senior Freelance Application Developer

Antonio is a programmer with over two decades of experience in the FinTech and Telecom industries. He aspires to be a master of C#, SQL, React, NextJS Typescript. He values curiosity, resourcefulness, and honesty. His hobbies include hiking, photography, meat, driving, and exploring medieval structures

Application Architecture • 10 yrsFull Stack • 15 yrsReact • 3 yrsWeb Development • 20 yrsSQL • 20 yrsJavaScript • 18 yrsAzure • 15 yrsC# • 15 yrsMentoring • 15 yrs.NET Framework • 15 yrsNode.jsPostgreSQLServerlessNext.jsTailwind cssBlazorSocket programmingWCF (Windows Communication Foundation) ServiceMicrosoft SQL ServerASP.NET MVC

+16

Agustin D.

Peru

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Senior Freelance Application Developer

Experienced and results-driven Senior Software Engineer with over **10 years of expertise in software and game development**. Strongly focused on problem-solving and delivering high-quality code that exceeds project objectives. Possessing a **passion for C++, computer graphics, and game engines**, I have a proven track record of leading teams and contributing significantly to the development of various games using Unreal Engine in my recent jobs. Currently, I am undertaking a side project to **develop a game engine from scratch**, which has further enhanced my technical abilities and expanded my skill set. I am adept at working with cross-functional teams and have a keen eye for detail to ensure seamless integration of different components in complex systems.

Application Architecture • 5 yrsC++ • 10 yrsGame • 7 yrsUnreal Engine 4 • 5 yrsPerforceUnreal Engine 5Unreal EnginePythonLinux

+5