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freelance Development developers

Hussain M.

Freelance Development developer in Pakistan

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I’m a Software Engineer with 5+ years of experience using languages such as JavaScript, Python, and Dart. I have extensive experience with frameworks such as Next.js, Django, Flutter, and React. I've worked at fortune 500 companies and startups. Moreover, to date I've taught 100,000+ students mobile and web development through my online video tutorials and courses. I've acted as a CTO for two startups and have helped them launch and scale their MVPS.

Mobile App DevelopmentiOS DevelopmentFlutter • 5 yrsPython • 5 yrsGoogle Cloud Platform • 4 yrsDjango • 4 yrsNode.js • 4 yrsJavaScript • 4 yrsAWS • 3 yrsPostgreSQL • 3 yrsReact • 2 yrsMongoDB • 2 yrsAndroidFlaskHerokuFirebaseJavaJiraConfluenceMicroservicesCI/CDNestJSNetSuite

+16

Matthew D.

Freelance Development developer in the United States

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I'm looking forward to mentoring you or helping your team with any phase of the product development cycle. I've had a varied career across nearly every role (SWE, EM, PM) in product development, from the nuts and bolts of mobile app performance to UI-focused user growth projects.

Web DevelopmentJava • 10 yrsAndroid • 8 yrsManagement • 3 yrsKotlin • 1 yrsVideo streamingiOS

Medine K.

Development developer in the United States

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Professional QA Software Engineer with 5 years of work experience in SDET, and holding Professional Scrum Master (PSM I) and Certified Scrum Master Certification (CSM). I have strong knowledge and skills in Software Testing Applications and Project Management and am very familiar with SDL, STLC phases, Project Management, and Agile/Scrum Methodologies. Highly skilled in programming, debugging, troubleshooting, and problem-solving skills. Good at programming languages and testing tools such as JIRA, Selenium, Cucumber, and TestNG experience in testing REST services using Postman and Rest Assured Library. Strong knowledge of Cucumber framework and Junit for testing, Maven for Project building tool, Jenkins for Continuous Integration. Developed Test Scripts to implement Test Cases, Test Scenarios, and features for BDD (Behavior Driven Development) using Cucumber and TDD (Test Driven Development). Experienced with Web API development based on RESTful using the tool, Postman. Develop scripts and perform RESTful API testing using Rest Assured Framework for Regression testing & Smoke testing. Hands-on experience in Java Database Connectivity (JDBC) to execute queries in Database, with automated testing tools and frameworks and used SQL for verification from Oracle Database and MySQL. Perform data-driven testing using Excel and automate it using the Apache POI library Well-versed in developing testing frameworks such as Behavior-driven (BBD), Test Driven (TDD), Data-Driven (DDT), and hybrid frameworks with Page Object Models. Ability to adapt to a new environment quickly, strong team player, good communication, collaboration, quick learner, confidence, and leadership skills. Strong interpersonal skills, a love of learning Positive attitude, enthusiasm, professionalism, and a strong work ethic with a high level of energy. Passion for building high-quality solutions through automation.

Test driven developmentJava • 5 yrsSelenium • 5 yrsTest Automation • 5 yrsJUnit • 5 yrsScrum • 5 yrsTestNG • 5 yrsGit • 5 yrsPostman • 5 yrsApi testing • 5 yrsCucumber • 5 yrsSQLAPIMySQLGitHubJenkinsJiraRestassuredManual testingRegression testing smoke Test case

+15

Tim B.

Development developer

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I'm an experienced software developer with a passion for creating great user experiences and making data-driven choices. I'm friendly and outgoing, so I love working as part of a team, but I'm equally happy getting stuck into a solo project. I really enjoy solving interesting problems and writing clean & maintainable code. Outside of work, I'm passionate about travel, music and video games.

DevelopmentWPF • 12 yrsC# • 12 yrsVersion control • 12 yrsJira • 8 yrsJavaScript • 2 yrsASP.NET • 2 yrsAzure • 1 yrsWordPress • 1 yrsData Science • 1 yrsHTML/CSSWinFormsWCF (Windows Communication Foundation) Service

+6

Tom H.

Freelance Development developer in the United Kingdom

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Software engineer with over ten years’ experience in the industry. Delivered as an individual contributor, tech lead and software development manager across games, developer tools and high-performance computing. Looking for new opportunities as an independent contractor/consultant along side building software to support the environment.

Game Engine Development • 7 yrsC++ • 10 yrsTooling • 6 yrsGame • 10 yrsC# • 5 yrsCMake • 5 yrsPython • 2 yrsAWS • 2 yrsEngineering Management • 2 yrsAWS DynamoDBAWS LambdaGit

+5

Marcin B.

Freelance Development developer in Poland

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I'm a **software engineer generalist** with an extensive experience in developing and leading software projects. My main area of expertise is application development and realtime graphics like games and interactive installations. My favourite tool is **Unreal Engine 5**. I have been working as a full time Unreal Engine C++ Developer in professional game studios for the last couple of years, focusing on gameplay features and engine tools. **Houdini** is a perfect tool for creating optimised assets, preparing baked simulations and procedural asset creation. I'm using it for years and i feel it works great in a tandem with Unreal. Read more on my homepage: https://martinrocker.com/

Software Development • 10 yrsUnreal Engine • 3 yrsC++ • 3 yrsBack-End • 8 yrsFront-End • 6 yrsServer Administration • 5 yrsPython • 2 yrs3D Modeling • 2 yrsGLSL • 2 yrsSQLElixirJavaScriptRuby

+6

Rodrigo C.

Freelance Development developer in Brazil

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I am a senior software engineer in test with extensive experience in QA automation and test development, implementing automated test pipelines from scratch using frameworks such as Selenium, Cypress, Appium in Jenkins, and GitHub Actions CI / CD pipelines. I prioritize the development of high-quality applications that meet business and user needs. I delivered solutions for companies like Google, Amazon, Riot Games, IBM, Siemens, and Motorola. My background enables me to establish positive teamwork, communication, and collaboration in all the teams I worked on in the last few years with senior management, developers, or external stakeholders. I lead Scrum teams in sharpening quality skills like problem-solving and orientation to detail. I'm comfortable in leadership positions and have done so over the years by mentoring junior team members. \--- I lived abroad and can communicate in English at a fluent-to-native level, having scored 109/120 in TOEFL iBT a few years ago. Feel free to send a message or reach me at rodrigo.costa@gmail.com.

Mobile App Development • 6 yrsQA • 10 yrsTest Automation • 10 yrsJavaScript • 8 yrsSelenium • 10 yrsManual testing • 10 yrsCypress • 8 yrsJava • 6 yrsPython • 3 yrsSalesforceGitLabDynamoDBAppiumAWS LambdaJiraScrumSOAP Web ServicesRESTful APICucumberJMeterBDDAWS DynamoDBApi testingGitLab CI/CD

+17

Mohamed I.

Freelance Development developer in Egypt

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A Passionate Android Engineer. I've developed seven major apps in various domains, optimized and scaled most of them, delivering features that are testable, maintainable, and stable. My skillset includes Kotlin, Java, RxJava, and Android Jetpack libraries. I take joy in helping others solve their software development challenges, saving them time and effort.

Software Development • 7 yrsAndroid • 7 yrsJava • 7 yrsKotlin • 6 yrsiOS • 1 yrsSwift • 1 yrsFlutter • 1 yrsGoogle MapsMVVMFirebaseRetrofitMaterial DesignRxJavaCircleciFastlaneJetpack ComposeSQLiteMaterial-UIClean ArchitectureAndroid FragmentsAndroid StudioAndroid SDK

+15

Ajay K.

Freelance Development developer in Belgium

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As a seasoned full-stack developer and certified cloud developer with over 14 years of diverse IT experience, I bring knowledge and expertise to every project. My proficiency spans Java 21, SpringBoot, Spring Cloud, Python, OSGi, Node.js, Angular, and TypeScript, ensuring robust and scalable solutions tailored to client needs. Experienced senior Java developer with expertise in integrating Azure OpenAI services and large language models (LLMs) to build AI-driven solutions. Proficient in leveraging gRPC, Java 21, and Python for real-time AI applications, especially in the healthcare domain. My hands-on experience with Docker and Kubernetes enables me to create efficient, containerized applications that streamline development and deployment processes. Furthermore, I have vast DevOps experience, expertly utilizing Azure ADO, Git, and CI/CD pipelines to enhance development workflows and ensure seamless integration and delivery. As a certified Azure Cloud Developer, I specialize in designing and implementing cloud infrastructure that drives innovation, operational efficiency, and scalability. I have successfully architected and deployed numerous cloud-based solutions, leveraging the power of Azure to deliver high-performance, secure, and cost-effective systems. I possess strong communication skills and excel in distributed environments, ensuring clear and effective collaboration with distributed teams and clients. My ability to articulate complex technical concepts simply has been instrumental in driving project success. I have significant experience in Kafka, building RESTful services, and working within a microservices environment, which allows for scalable, resilient, and maintainable software architecture.

Test driven developmentJUnit • 14 yrsJava • 14 yrsSpring Boot • 10 yrsRESTful API • 10 yrsApache Maven • 10 yrsSpring • 10 yrsDevOps • 8 yrsGit • 8 yrsSQL • 8 yrsAzure • 6 yrsAngular • 6 yrsJavaScript • 6 yrsNoSQL • 6 yrsApache Kafka • 5 yrsElasticsearch • 5 yrsSpring SecurityMaven 3DockerKubernetesAzure DevOps ServerAILLMAzure OpenAIJenkinsGoogle Cloud PlatformMicroservicesAWS LambdaCI/CDEC2 Instance TypesAWS

+24

Arushi S.

Freelance Development developer in India

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I am Arushi Singhal, Software Engineer at Amazon. I have a keen interest in Algorithmic Problem Solving and have been programming for around 7 years now. I interned in Summer 2019 at Google as a Software Engineer. In Summer 2018, I did a Machine Learning internship at Robert Bosch Engineering and Private Limited, Bangalore, India (RBEI). I have multiple experiences of back-end development for large-scale systems. During my internships, I worked with Python and machine learning libraries in Python, Java, gRPC, Protocol Buffer, Google Guice and Google’s Internal Frameworks, Django, Ruby on Rails. I have also contributed to many open-source projects, including the Linux Kernel. I have submitted over 50 patches to kernel code. My other contribution to Open Source can be seen on my GitHub Profile. I am also passionate about mentoring and motivating people to contribute to open-source projects and was Google Code-In Mentor in 2017 for OpenWISP and Sugar Labs. I also worked as a Computer Science Instructor at CodeConnect, where we as an instructor ensure that our computer science education is accessible, empowering, and supportive for the next generation, and committed to our mission of increasing diversity in tech. In CodeConnect, I gave Python lectures to Pre-University students. I also used to be a Student Teaching Assistant and Research Assistant and I find teaching/mentoring extremely motivating - sometimes I'd get introduced to new interesting topics that I'd probably never think of finding out about on my own if it wasn't for the purpose of explaining it to someone else. Sometimes I'd get a completely new perspective on subjects I thought I knew when trying to find a way to present it to someone else. I'd really love to keep learning this way. One of the topics I'm always happy to talk about are the interviews - I've done a fair share of them, most of them in top tech companies and I would love to share what I've observed so far. I'm always up for tackling interesting interview questions, doing mock interviews or just giving resume tips (I got my interviews at Amazon, Facebook, Microsoft, Google and also at open-source communities without a referral, so I might help you with reviewing your resume to make it stand out. :)) Other than that, you can always reach out to me if you have questions related to Java, Python, R, Matlab, C, C++, Data Structures, Algorithms, SQL, GIT, Mathematics etc. I try to keep my knowledge and skills up to date and learn something new every day by helping you! Being a researcher, quick learner and having software development experience, I believe I am a good fit for mentoring.

Software DevelopmentSQL • 7 yrsJava • 6 yrsPython • 5 yrsMathematics • 15 yrsCoding • 12 yrsInterview Preparation • 9 yrsFaang • 8 yrsCoding challenges • 7 yrsTeaching • 7 yrsResume Writing • 7 yrsData structure • 7 yrsHTML/CSS • 7 yrsC++ • 7 yrsMATLAB • 6 yrsMySQL • 6 yrsGit • 5 yrsC • 5 yrsRuby on Rails • 5 yrsDjango • 5 yrsPyTorch • 4 yrsR • 4 yrsXML • 4 yrsJSON • 4 yrsBash • 4 yrsAWS • 3 yrsXSLT • 3 yrsInterview Skills • 2 yrsFull StackAlgorithmBack-EndPandasPython 3Python 2

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