Hire the best JavaScript Developers in Bydgoszcz, PL
Check out JavaScript Developers in Bydgoszcz, PL with the skills you need for your next job.
- $65 hourly
- 5.0/5
- (45 jobs)
👋 Hello! Top Rated QA Automation Expert ready to assist! I'm here to help you elevate your software testing and development endeavours. 🚀 🌟 Over the years, I've had the pleasure of working with a diverse range of clients and projects, including the financial sector, ERP systems, business catalogues, and even a large-scale entertainment website. Whether it's ensuring your banking system runs smoothly or optimizing the user experience on your entertainment site, I've got the expertise you need. 🛠️ Backend development and REST-API, I'm your Python specialist, with proficiency in Flask and Django. But that's not all—I'm fluent in tech lingo, from SQL (Oracle, MS SQL, PostgreSQL, MySQL) to NoSQL (MongoDB, Redis, Cassandra, Memcached), Elasticsearch, and a host of essential tools like Git, TFS, Jenkins, TeamCity, Bitbucket, YouTrack, Jira, and more! Let's have a chat and discover how I can add value to your project. Feel free to reach out, and let's get started! 🤝🔧 Keywords List: QA Engineer, Software Testing, Manual Testing, Automated Testing, Quality Assurance, Functional Testing, Web Testing, API Testing, Mobile App Testing, Appium Testing, A/B Testing, Data Scraping, Browser Automation, Bug Tracking, Usability Testing, Email Marketing, WordPress Development, Integration Testing, Penetration Testing, Security Testing, Ethical Hacking, Accessibility Testing, Performance Testing, Game Testing, UX Research, UI/UX Design, Data Analysis, Git, React Development, Laravel Development, Mobile Development, Video Player Testing, Continuous Integration/Continuous Deployment (CI/CD), Documentation Testing, Compliance Testing, Mockup Design, User Flow Design, Test Automation Framework, Customer Success, Project Management, Software QA, Test Case Design, Regression Testing, Stress Testing, Load Testing, Black Box Testing, White Box Testing, Agile Testing, Test Strategy, Test Execution, Web Application Testing, Mobile App Debugging, GitHub, SQL, Python, Java, JavaScript, C#, HTML, CSS, Framework Testing, Selenium, Cypress, JMeter, Robot Framework, Performance Optimization, Security Auditing, Data Migration, Data Integration, Firebase, RESTful API, SOAP API, Client-Side Testing, Server-Side Testing, Functional Requirements, Non-Functional Requirements, Risk Assessment, Test Environment Setup, Defect Tracking, Test Reporting, Cross-Browser Testing, Cross-Platform Testing, Test Planning, Test Management, Source Code Review, Software Deployment, Test Review, Test Artifacts, Live Testing, Load Balancing Testing, Usability Analysis, Compliance Auditing, Automated Test Scripts, Test Harness Creation, Test Data Management, ISO 9001 Compliance, WCAG Compliance, Data Annotation, Test Cases, Exploratory Testing, Compatibility Testing, Application Testing, User Acceptance Testing (UAT), Test Metrics, Test Automation Strategy, Agile Methodologies, DevOps Practices, CI/CD Pipelines, Testing Tools, Bug Reports, Version Control, Agile User Stories, JIRA Management, Confluence Documentation, Kanban, Scrum, Sprint Planning, Retrospective Meetings, A/B Test Analysis, Heuristic Evaluation, Test Documentation, Validation Testing, Verification Testing, Business Requirements Analysis, Functional Specification, Test Scenarios, Test Scripts, Test Workflow, User Interface Testing, Integration Validation, Database Testing, SQL Queries, MySQL, PostgreSQL, Data Security Testing, Mobile Device Testing, System Testing, Application Security Testing, Penetration Testing Tools, Vulnerability Assessment, Ethical Hacking Techniques, Security Risk Assessment, Network Security Testing, Cloud Application Testing, SaaS Testing, PaaS Testing, IaaS Testing, End-to-End Workflow Testing, Mobile Compatibility Testing, Accessibility Audit, API Functional Testing, Browser Compatibility Testing, Test Case Management, Test Result Analysis, Prototyping, User Journey Mapping, User Flows, Marketing Automation Testing, User Interface Prototyping, Continuous Testing, Test Coverage Analysis, Software Quality Metrics, Technical Support, Customer Satisfaction Analysis, Accessibility Compliance, Software Debugging, Quality Control, Stakeholder Communication, Test Plan Development, Test Resource Management, Automation Framework Development, Performance Benchmarking, Nginx Configuration, Apache Tomcat Testing, Automated Regression Testing, Manual Regression Testing, User Experience Testing, Database Administration, Data Validation, Application Performance Monitoring, SaaS Quality Assurance, Software Maintenance, Incident Management, Test Architecture, Agile Quality Assurance, Continuous Improvement, Test Readiness Review, KPI Monitoring, Test Automation Tools, Frontend Testing, Backend Testing, Test Data Generation, Local and Remote Testing, UAT Script Development, Testing Best Practices, Exception Handling, Edge Case Testing, Test Schedule Management, Load Generation, Test Cycle Optimization, Software Release Management, Hardware Testing, Firmware Testing, Testing Audits
JavaScript
Software QAQA Software & Testing ToolsSoftware TestingAutomated TestingSeleniumLoad TestingPythonQA TestingQA AutomationAPI TestingWeb TestingManual TestingFunctional TestingBug Tracking & Reports - $20 hourly
- 5.0/5
- (22 jobs)
I'm a highly skilled and experienced WordPress/WooCommerce, PrestaShop, JavaScript,/Vue, PHP/Laravel developer ready to transform your web ideas into reality ✨. I'm passionate about creating user-friendly, high-performance, and visually stunning websites that captivate your audience and boost your business 📈. Whether you need a simple landing page or a complex e-commerce store, I'm here to help you achieve your goals 🎯. My expertise lies in: HTML and CSS for crafting clean and semantic markup 🪄 JavaScript for interactive and engaging user experiences 🎮 Vue.js for building modern and performant web applications 🖥 WordPress/WooCommerce development for seamless e-commerce solutions 🛒 PrestaShop development for robust and scalable online stores 💰 PHP for server-side development and backend functionalities 👨💻 Laravel for creating robust and scalable web applications 💪 I'm also a team player and a quick learner, always eager to take on new challenges and expand my skill set. 💪 Let's work together to create the website of your dreams! 🤝
JavaScript
LaravelWeb DevelopmentVue.jsjQueryCSS GridWooCommerceCSSPHPCSS 3HTML5WordPressSassMySQL - $40 hourly
- 5.0/5
- (12 jobs)
I`m a backend developer and an Azure DevOps engineer, mainly I use C# in my daily job, but in my spare time I am involved in reverse engineering/security research tasks. I love participating in CTF challenges, this includes C++ / python / js scripts. I successfully passed Microsoft Certified: Azure Developer and Microsoft Certified: DevOps Engineer Expert exams Personally, I don't do many frontend jobs, besides WPF / Xamarin forms or maintaining simple web dashboards, but I used to be Systems Integrator so I will be able to handle almost any challenge.
JavaScript
.NET FrameworkJavaC++C#Computer NetworkMobile App DevelopmentEthical HackingMicrosoft AzureReverse EngineeringJSONPythonAPI IntegrationData ScrapingMicrosoft Windows PowerShell - $55 hourly
- 5.0/5
- (148 jobs)
As an Engineer with substantial experience in both monolithic and headless e-commerce platforms, I focus on delivering high-quality solutions to each project I undertake. With over 7,000 hours of work on Upwork and a consistent record of success, my aim is to provide valuable insights and solutions to a range of challenges in the digital commerce sector. I'm passionate about leveraging my skills to help businesses achieve their goals in this dynamic field. Core Expertise: E-commerce Platforms: Proficient in creating and optimizing e-commerce solutions tailored for Small to Medium Businesses (SMB), Small to Medium Enterprises (SME), and Enterprise-level clients. My expertise extends across leading platforms such as Shopify, commercetools, and WooCommerce, ensuring a comprehensive approach to various e-commerce challenges and requirements. Payment Systems Design & Integration: Specializing in the design and integration of payment systems, with a particular focus on Adyen. My expertise extends beyond mere integration to designing payment solutions that optimize transaction processing and enhance user experience. Also experienced with Mollie, PayPal, Stripe, and other payment gateways. Programming Languages & Frameworks: Proficient in PHP, JavaScript, TypeScript, and NodeJS. Experienced in developing serverless applications and implementing event-based architectures. Full stack development and shopify applications: Experience in Remix, React, Prisma and in creating customized shopify projects. Cloud & Infrastructure: Deep knowledge of AWS Services, Terraform, and building scalable cloud-based solutions. APIs & Integrations: Expertise in REST API, GraphQL, and integrating a wide range of services including Shopify, Cratejoy, Auth0, Avatax, Metapack, Algolia and way more. WordPress Development: Skilled in developing custom plugins, themes, and performing bug fixes. Extensive experience in WooCommerce for building robust online stores. Shipping & Fulfillment: Experience with shipping and fulfillment solutions like MetaPack, ensuring seamless order processing and delivery. I am always looking for new challenges and opportunities to leverage my skills in additional projects. Whether you need expertise in e-commerce, custom development, or scalable cloud solutions, I am here to help your business succeed. Feel free to reach out to discuss how we can collaborate on your next project!
JavaScript
Ecommerce Website DevelopmentGitAngularJSjQueryAWS LambdaPayment Gateway IntegrationGoogle AnalyticsAWS CloudFormationNodeJS FrameworkCSS 3HTML5PHPWordPressSass - $18 hourly
- 5.0/5
- (15 jobs)
Experience: 6.5 years in user interface development. Perfectionist. I implement the interfaces that users want to interact with. In 90% of cases, I get everything right the first time — no revisions or bugs. I always see my projects through to the end. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Worked on a wide range of projects, from simple landing pages to entire platforms with multiple services, and developed design systems. I have excellent skills in website markup development, always considering responsiveness and handling content overflow/underflow in different areas, eliminating edge cases where a user or site administrator might accidentally "break" something. I always keep "line length" in mind for multilingual sites. I have strong skills in writing and organizing CSS/SCSS styles, building structured systems. I am proficient in quality styling methodologies such as BEM and SMACSS. I have worked with a variety of JavaScript/TypeScript tools and frameworks. I have significant experience with Nuxt and Vue, although it has been a while since I last worked with these tools. I am proficient in React, both independently and in conjunction with Next.js. I have a strong command of Next.js and understand its strengths and weaknesses. I can effectively utilize the caching strategies built into the framework. I am familiar with all types of rendering (SSG, SSR, CSR, ISR, RSC, PPR) and understand when to use each approach for optimal performance. Using these skills, I can reduce server load or optimize a slow-performing backend when necessary. I have a basic understanding of backend development and PostgreSQL. I have some experience with headless CMS, and I am familiar with Docker and CI/CD. I have worked with Node.js, mostly in the context of Next.js. I can independently create a simple project and deploy it on a server. I would be happy to continue developing in this area. I focus on code quality and organization in the front-end. I adhere to the principle: "Keep it as simple as possible, but not simpler." I explore various patterns and architectures, such as FSD (Feature-Sliced Design) and Clean Architecture, and apply them in my recent projects. I respect the work of others because I also respect my own. I can address minor design flaws and, when necessary, compensate for backend errors on my side, understanding that it’s impossible to foresee everything. My part of the work is to create the initial user experience, which depends on all stages of development, so I always strive to make it as pleasant as possible.
JavaScript
BootstrapPostCSSNode.jsNuxt.jsVue.jsReduxSCSSTailwind CSSCSSHTMLTypeScriptReactNext.jsFront-End Development - $35 hourly
- 0.0/5
- (0 jobs)
Experienced developer and technical lead with strong development background. Excellent communicator experienced in interpreting and implementing client and staff vision of new applications and application features. Known for the ability to multi-tasking and handling multiple projects simultaneously, meeting all deadlines. The mission is handling the technical side of clients' online business, letting them focus on its growth and scaling. Focused on Jamstack and static site generators development: - Gatsby, Next.js; - Jekyll, Hugo; Skilled at frontend frameworks: - React; - Angular (1.x, 2-5); - Ionic 2-3; Experienced at backend and databases: - NodeJS, ExpressJS; - Ruby, Ruby on Rails; - MySQL, PostgreSQL; - Stripe API integration; Proficient at programming languages: - JavaScript (ES6+), TypeScript, CoffeeScript; - CSS3 (Sass, Stylus); - HTML5 (Slim, Pug); Effectively using development methodologies and tools: - Variations of BEM, OOCSS; - Heroku, Netlify, AWS S3; - HerokuCI and CircleCI; - git, GitFlow, Conventional Commits; - webpack and Gulp. Familiar with: - WordPress, OpenCart, Drupal; - Jasmine, MochaJS, and Karma; - Grunt, yeoman.
JavaScript
AWS ApplicationJekyllHugoStatic Site GeneratorCSSGatsby.jsNext.jsReactHTMLAWS AmplifyTypeScriptTemplate Markup - $10 hourly
- 0.0/5
- (0 jobs)
I’m a front-end developer focused on creating responsive, user-friendly interfaces with React. I’ve built projects both independently and in small teams, gaining hands-on experience in component-based architecture, state management, and UI design. I also work confidently with HTML, CSS, and JavaScript. Let’s stay in touch and build something great together.
JavaScript
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