Upstaff Developer Profile Directory

- 5 years of experience as a Middle React.js Developer - He has experience with web interfaces and react.js and node.js technologies. Experience with PWA on projects, also worked with PHP, C++, C#, and Android development. - Upper-Intermediate English - Available ASAP

- 13 years of experience in application software development. - Experience of development mobile applications, desktop applications, database applications, WEB-applications, Static Code Analyzing, Team management. - More than 6 years of experience in administration IT infrastructure, passed MCP, MCITP, MCSA certifications. - Upper-Intermediate English. - Available ASAP.

- 2+ years of experience as a Middle React.js Developer - He has experience working on an SSR application on React.js/Next.js/Node.js/TypeScript. Knowledge in building high-quality JS and react.js applications. Engaged in the approach to performance optimization tools. - Upper-Intermediate English - Available ASAP

- Proficient in Node, Typescript, and Express, with experience in multiple backend development roles, working on projects related to education, healthcare, and SEO optimization. - Utilized tech stack including Nest.js, PostgreSQL, TypeORM, Redis, GCP, REST, and WebSockets while developing platforms for physicians and improving healthcare services. - Successfully integrated ElasticStack and implemented admin panels for SEO entities in a platform designed for automated SEO optimization. - Developed and maintained microservices for a healthcare company, focusing on notifications, messages, calls, and emails, utilizing technologies such as Express, Nest.js, MySQL, MongoDB, Sequelize, and Firebase. - Consistently prioritized efficient workflows and high test coverage, introducing git flow strategies and achieving 90% unit test coverage in microservices. - Upper-Intermediate English - Available ASAP

- 15+ years experience as Python Developer/Data Engineer. - Has experience with SQL and data modeling skills. Also, with migration from one data warehousing solution to another. Solid experience designing and implementing a complex data warehouse or database schema. And has implemented an ETL pipeline using dbt, and AWS. - Upper-Intermediate English. - Start ASAP

- 3+ years experience in the IT industry as a Java developer - Has skills in developing microservice applications - Has experience in programming Spring Framework, Hibernate - Great knowledge of Java Core - Upper-Intermediate English - Available ASAP

- Qualified software engineer, Salesforce Developer, and Administrator - Upper-Intermediate English - Available ASAP

- Experience: 4+ years - Intermediate English. - Available ASAP.

- 4 years of experience in the IT - Experienced in the full project life cycle from design to implementation to integration - Upper-Intermediate English - Available from 19.07

- 10+ years of web development - Upper-Intermediate English. - Available ASAP.

- 10+ years of experience in software development - Extensive experience in the expansion and creation of themes/plugins, setting up new sites, support and modification of existing sites on WordPress - Created 200+ web sites targeted for various business areas and industries - Excellent knowledge of WordPress and popular plugins: WooCommerce, Gutenberg, ACF Web development experience, using OOP, PHP, AJAX, MySQL, JavaScript, XML, HTML and CSS - Understanding of cross-browser, adaptive layout and semantic HTML markup o Excellent knowledge of HTML5, CSS3, JavaScript, jQuery, Bootstrap - Integration with API NameCheap, PayPal and other services - Experience with Responsive Web Design, Mobile Web Development, Web Performance, Cross-Browser / Cross-Platform Development, Version Control - Software architecture design, using object-oriented and modularity principles o Experienced in building, maintaining, design implementation, end to end setup of the whole website on WordPress - Experienced in applying the GIT for the website development - Performs analysis, support and refactoring of the Legacy Encoded Applications - Flexible and able to work under the high pressure to ensure that projects are completed within the deadline - Intermediate English

- I am qualified and professional full-stack developer. - Responsibility is my strong part and I have the ability to meet deadlines. - 5 years of experience shipping innovative and scalable web solutions with React.js, Vue and Node.js. - I have Strong technical architecture and platform engineering skills and can easily switch between technologies - Upper-Intermediate English. - Available ASAP.

- 3 years of experience as a Middle React.js Developer - He has programming experience and knowledge in JavaScript, React.js (Next.js), and TypeScript. Likes to apply new development methods, design patterns, and current trends, as this is important for product quality. - Upper-Intermediate English - Available ASAP

- Back-end developer with 6+ years of commercial experience; - 4+ years of experience working with Node.js and Express.js; - Good knowledge of work with AWS, Doker; - 5+ years experience working with CORS; - Skills in working with blockchain projects; - Experience working with the DEX project in the field of DeFi; - Deep understanding of creating DB and API structure and implementing app logic; - Good collaboration with the product team to understand requirements and business specifications; - Highly motivated to do amazing products, like to learn new technologies; - Intermediate English; - Available: ASAP.

- Frontend developer with 4+ years of experience - Basic knowledge of Node.js on the back-end side - Experience working in both large and smaller teams - Has experience in technological solutions for improving business processes - Intermediate English - Available ASAP

- 16 years of experience in IT. 3 years of experience as a Flutter Developer. - He has experience in developing applications from scratch using the Flutter framework. - Intermediate English - Available ASAP

Senior FullStack Developer

- 8+ years of experience in the IT industry developing native IOS applications - Providing a full-cycle mobile development using the latest versions of Swift and Objective-C - Hands-on scripting experience with CoreData, Core Animation, AVFoundation, MVC, and MVVM - Upper-Intermediate English - Available ASAP

- 3+ years of experience with NodeJS, WebPack, Babel, PHP, BEM, AWS; - Work experience with Express.js; - A good understanding of how the infrastructure of blockchain projects works; - Experience working with NFT projects; - Good skills in fixing existing bugs and implementation of new functions in the backend of blockchain projects; - Experience in creating from scratch API connectors in Node.js-based for Polkadot blockchain; - In-depth skills in creating from scratch backend on Node.js-based to interacting with the blockchain, gathering data, and distributing rewards using smart contracts; - Intermediate English. - Available: ASAP

- A middle Ruby on Rails engineer with over 5 years of commercial experience in web development - Experience in refactoring and high-performance application development. - Upper-Intermediate English - Available ASAP

- Having 9.4 years in the Testing domain which includes both Automation and Manual testing on web-based and mobile-based applications using Serenity, BDD Cucumber, selenium web driver, MySql, and java. - Has Manual testing experience, well versed with the SDLC/STLC. Experience in Writing/Execution of Test cases and Expertise in Functional, Integration, and System Testing. Also, has a good working knowledge of Smoke, Regression & Ad-hoc testing. - Upper-Intermediate English. - Location - Poland - Start ASAP

- 5+ years of commercial software development experience; - 5+ years experience working with Node.js; - Strong skills with Express.js; - Good knowledge of working with AWS; - Familiar with Docker, and Kubernetes (K8s); - Good abilities in mentoring and training new project participants, and supporting them; - Deep knowledge in designing and implementing backend and frontend features and bug fixing; - Upper-Intermediate English - Available: ASAP

- Middle Ruby on Rails engineer with over 5 years of commercial experience in web development. - Experience in integration of payment and messaging systems and high-performance application development. - Upper-Intermediate English - Available ASAP

- 4+ years of experience in IT - Upper-Intermediate English. - Available ASAP

- Junior QA Engineer, work with Jira, Postman, create checklists and testcases. - Intermediate English. - Available: ASAP

- Strong background in Python and relevant data libraries like NumPy, Pandas, etc with excellent analytical, programming, and problem-solving skills. - Experience of working with Snowflake with certification. - Proficiency in SQL Development like Transact-SQL, Data Creation, Data Definition, Stored Procedures, Views, Jobs, Triggers, etc. - Proficiency in Data Modelling, Model Interpretation, and Data Testing. - Expert in BI Development using Tableau, SAP Crystal Reports & Power BI - Worked intensively on Azure Cloud with certification. - Knowledge of working with NoSQL Databases like MongoDB, Amazon DynamoDB, - Experienced Shopify Developer, - Expert in Django based web development. - Experience in CI/CD methodologies using Github Actions & Buddy, - Proficient in Windows Server Administration, Windows Active Directory, G-Suite Administration, Microsoft Exchange / Office 365 Administration. - Upper-intermediate English. - Available ASAP.

- 20+ years of experience in IT - Experience in Support Analyst, Systems Analysis, Software Development, Data Engineer, Database Engineer, Systems Integration, Integration Developer, Data Analysis, Data Structures, Data Integration, Database Migration, Database Modeler, Database Analyst/Developer, Database Design, Database Management, Data Warehouse, Data Discovery, ELT/ETL, Extract, Transform, Load, Data Pipelines, Data Replication, Business Intelligence, Data Modeling (Dimension and Relational), Performance Tuning (SQL, PL/SQL Applications), experience in working with large databases and datasets, testing, validation, implementation, and troubleshooting skills, performance and resource optimization improvements, maintaining development, test and production environments, experience with process automation (monitoring, alerting, auto-corrective) and distributed systems, strong knowledge in PL/SQL, SQL, Oracle Database and - Knowledge in Agile methodology (Scrum, Kanban). - Upper-Intermediate English - Available ASAP - No vacation plans

- 15 years of experience in the IT industry - 3 years of experience with Salesforce Commerce Cloud - Intermediate English

- 5 years of experience. Obtained strong skills in frontend development. Skilled in React, Redux, experienced in Angular, AngularJS, Typescript, Next.js. Experienced with integrating frontend with backend API. Used Redux and HTTP services. Strong knowledge of assembling tools, like Webpack, Gulp - Upper-Intermediate English - Upper-Intermediate Polish - Available ASAP

- Frontend developer (Angular) at ITHoot. Before that, I worked as a freelancer for 1 year. - During my work, I mastered Html, Css, Scss, Gulp, JavaScript, Git, Angular2 - Pre-Intermediate English. - Available: ASAP

- Having huge experience (14+ years) in backend development on C/Erlang/Elixir has shown himself as aim-oriented developer with analytical skills. - Using his experience he can not only to develop new features and functionality, but also make clear hidden multiconnection in any code that is based on the scope of Erlang/Elixir/C/Js. - Has a huge experience in parser development of custom xml coding - Upper-Intermediate English. - Available: ASAP

- 5 years experience in Salesforce - Top skills are Apex, Salesforce Lightning (Aura & Web components), and Force.com platform - Upper-intermediate English - Available ASAP

- Strong knowledge and experience in object-oriented programming OOP. - Experience in developing of applications using WPF, WinForms, ASP.NET Core, and Angular. - xUnit testing is used for test cases. - Extensively worked with Version Control systems like GIT. - Experience of work with the NuGet Package Manager. Uploaded my own package. - Knowledge of SQL Server and SQL - Postman to test the API. - Development of websites using JS, TS, and CSS - A little experience in deploying containers in azure. - Pre-Intermediate English. - Available: ASAP

- Having 11 years in the Testing domain which includes both Automation and Manual testing. - Has Manual testing experience. Has experience as LEAD SQA and SQA MENTOR - Upper-Intermediate English. - Location - Spain - Start ASAP

- Skillful Data architect with strong expertise in the Hadoop ecosystem (Clouder/Hortonworks Data Platforms), AWS Data services, and more than 15 years of experience delivering software solutions. - Intermediate English - Available ASAP

- 15+ years of experience in IT - Knowledge of System Administration of the hardware and software levels, networks,operating systems of different types of OSes - Windows family, Linux RPM/Debian based and *BSD. - Knowledge and experience with Amazon Web Services (AWS). Specialties: Dev-Ops, System administration, networks administrating, application support, user support, development support, infrastructure support, release management, configuration management. - Upper-intermediate English. - Available ASAP

- 3,5 years of experience in web development. Skilled in JavaScript Node, and React, TypeScript frameworks. Good knowledge of Angular. Confident in HTML, CSS, integration with API. - Upper-Intermediate English - Available ASAP

• Software engineer with 3+ years experience testing web/mobile apps • Certified Tester ISTQB Foundation Level. • Functional, Manual, UI/UX, Performance testing, planning, estimation, investigation, writing tests, support of existing. • Intermediate English. • Available Full-time. • Ready to start in one week.

• 5+ years of practical experience • Intermediate+ English level. • Available: ASAP. • No scheduled vacations within next 3 months.

- 3+ years of DevOps experience; - More than 2 years of working with Kubernetes and Terraform; - 3+ years of experience with Docker; - Deep understanding of converting monolithic applications to microservices using Docker and Kubernetes; - Experience monitoring and alerting systems using Grafana and Prometheus; - Hands-on experience in architecting, automating, and optimizing mission-critical deployments over a large infrastructure, CI/CD; - 3+ years of experience with AWS Cloud Platform; - Proficient with Infrastructure as a code and configuration management tools; - Experience with financial projects that cooperate with Visa and the main financial companies of the DAX Stocks; - Solid skills in working with large volumes of data and server loads; - Upper-Intermediate English; - Available ASAP.

- 5 years of experience in strong technical solutions to solve business problems - Building Architecture for Salesforce Sales Cloud and Salesforce Community Implementation. Salesforce DevOps - Demonstrated experience in implementing Innovative and strategic CRM solutions for Health Care, High-Tech, and Manufacturing Industries - Salesforce Certified Developer Platform 1 & Salesforce Certified Platform App Builder - Available ASAP

- Available ASAP - Intermediate English

- Detail-focused Data Analyst with knowledge in data warehousing, process validation and business needs analysis. - Business and Data Analyst with expertise in analysis and testing of business requirements. - Upper-Intermediate English. - Available ASAP.

- 6-month experience in testing web/mobile apps - Experience in next stages of the life cycle of testing of business applications. Functional, Manual, UI/UX, Performance testing, planning, investigation, writing tests, support of existing tests - Pre-Intermediate English - Available ASAP

- Developer with 11+ years of experience; - Developing web applications using PHP, JavaScript, Golang; - Experience with Blockchain and smart contracts; - Solid experience with MVC architecture-based Web Application Development; - Excellent knowledge of common software engineerings practices, like OO principles, modern design patterns, test-driven development, continuous integration, and continuous deployment; - Experience in building database architecture; - Hands-on experience with writing WEB-services (REST); - Has experience in Architectural approach discussions, design, and decision-making (feature/component level); - Estimation decision-making delivery management cross-team technical communication task; - Extensive experience in mentoring specialists, making code review; - Strong analytical skills, well knowledge of math, high level of responsibility; - Quick learner, team player, goal-oriented and responsible; - Upper-Intermediate English; - Available ASAP.

• 24-year experience as System engineer / DevOps with experience in network infrastructures management field across different OS (Linux, Windows). • Proficient with infrastructure clustering for handing high loads and high availability. Experience with building CI/CD pipelines. • Hands on experience with containerization using Docker, automated systems deployment using Ansible, infrastructure monitoring, centralized logging, Kubernetes. • Available: ASAP. • No scheduled vacations within next 3 months.

- 4+ years of experience in the IT industry as a Java Software Engineer - Upper-Intermediate English - Available ASAP

- 8 years IT professional experience in software development of web-oriented applications - Experienced in Java web development in server-part applications and server maintenance - Upper-intermediate English - Available ASAP