Upstaff Developer Profile Directory

QA Automation Engineer | QA Manager | Freelancer | 17 years of experienceSoftware QA Test Automation Web Test Automation Mobile Test Automation API Test Automation Performance TestingSelenium WebDriver Cypress WebDriver.io WebDriver.jsAppiumJMeter PostmanBrowserStack SauceLabsJava, JavaScript, TypeScript, Python, .NetSoftware QA Test Automation Web Test Automation Mobile Test Automation API Test Automation Performance Testing Selenium WebDriver Cypress WebDriver.io WebDriver.js Appium JMeter Postman BrowserStack SauceLabs Java, JavaScript, TypeScript, Python, .NetSkills: Test Automation · Performance Testing · Selenium WebDriver · Selenium · WebDriver · JMeter · Java · Performance Tuning · Load Testing · Software Quality Assurance · Testing · Test Strategy · Linux · ISTQB · Shell Scripting · Test Management · Quality Assurance · Automation · Non-functional Testing · System Administration · Programming · System Testing · Test Tools · Python · SoapUI

Senior Mobile Application Engineer with 17+ years of experience specializing in cross-platform mobile applications and SDKs. Expert in a wide range of frameworks and languages such as Capacitor, React, Next.js, React Native, Ionic, Flutter, Swift, Objective-C, Kotlin, Java, and proficient in CI/CD practices including Fastlane and GitHub Actions. Demonstrated ability in optimizing app performance, implementing push notification engines, and deploying production apps. Strong focus on secure, scalable API integration and backends, with a history of reducing project timelines through reusable components. Committed to agile methodologies and collaborative team environments, this engineer reflects a superior blend of technical prowess, industry insight, and hands-on experience across fintech, automotive, and healthcare sectors.

● 9 years of Ruby on Rails development ● Extensive knowledge in web and mobile development lifecycle ● Skilled in agile and waterfall project management methodologies, SCRUM experience ● Accountable, communicable, dedicated team player, self-motivated, conscientious, creative individual, well-experienced in troubleshooting, able to learn quickly and effectively ● Upper-Intermediate English ● Computer Systems Analyst (Master's degree)

- 6+ years of experience in the IT industry - Intermediate English - Available 2-4 weeks

- Professional engineer with proven ability to develop efficient solutions for complex problems, including cloud and Data projects; - Microservice architecture expertise Lightbend Reactive Architecture, Infrastructure as Code expertise in AWS CloudFormation, CI/CD (Gitlab, AWS CodePipeline), Cloud expertise - AWS; -Engineer with the ability to develop efficient solutions for complex problems, including cloud projects, AWS Services (Amazon Quicksight, EC2, S3, Glue), Databricks, Kinesis; - API development RESTful, Swagger, GraphQL, API Gateway, Microservice architecture expertise - Commercial experience in IT since 2013; - Lightbend Reactive Architecture, Infrastructure as Code expertise in AWS CloudFormation, CI/CD (Gitlab, AWS CodePipeline); - System level programming, OOP and OOD, functional programming; Stress on profiling and optimizing code, writing reliable code; - System-level programming, OOP and OOD, functional programming; - Profiling and optimizing JVM code; - Experience with product documentation and supporting products; - Upper-intermediate English; - Available ASAP.

Software engineer with 4+ years in customer service and administration, transitioning to full-stack development. Knowledge in IT Tools, administrative efficiency, and process management. Practical experience includes administration, sales tracking, and customer relationship management. Pursuing a Certificate in Full Stack Development, with an expected completion by July 2025, and acquiring Data Entry Tools and Techniques education. Core skills include IT proficiency, technical support, problem-solving, and efficient handling of high-volume transactions.

- Senior Software Engineer/Team Lead (6 years of experience) - Software engineer ready for any team or business need with strong IT knowledge and natural leadership talents. - Dedicated to enabling team members to exceed business targets. - Initiating projects, setting up baseline architectures, finalizing deployment procedures & end to end development including managing costs, schedule, and performance. - Managing multiple teams to lead them to outperform others and to give positive outcomes in terms of successful milestones deliveries and project completion. - Achieved project deadlines by coordinating with contractors to manage performance. - Monitored automated build and continuous software integration process to drive build/release failure resolution. - Wrote code and developed tools and integrations to meet cross-platform user needs. - Wrote and maintained custom scripts to increase system efficiency and performance time

- Senior Blockchain & Full Stack Engineer with over 15 years of experience in Web and Blockchain development. - Highly skilled Blockchain Professional with hands-on experience building Decentralized Applications and NFT Marketplaces. - Deep understanding of the architecture and protocols of Blockchain and Hyperledger including Bitcoin, Ethereum, L2 solutions, Cross-Chain. - Concentrating on ICO/IEO/IDO projects, helped many Startups and enterprising companies to raise funds and build Ecosystems on the Blockchain. - Quant Developer with a rock-solid understanding of Financial Markets, Quant Trading. - Strong at Solidity, Python, Rust, Web3.js, React, Typescript, Next.js, Node.js, Moralis. - A Veteran at C/C++/C#. - Great teamwork and troubleshooting skills. - Full-time remote, 40+ hours a week. - Upper intermediate English

- 7 years of professional experience using front-end and back-end technologies - Front-end: deep knowledge of native JavaScript (basics, OOP, DOM, events, asynchrony, AJAX, event loop), ES6+, jQuery and other libraries (Moment.js, etc.), Typescript, React, React Native, Redux, other React-tools (React-router, Redux-Saga, Reselect, etc.), HTML5, CSS3, LESS, SASS, Bootstrap - Back-end: Node.js, Nest.js, Express.js, Passport.js, RESTful API, socket.io - Modular, scalable, and reusable code, tests, project deployment - Upper-Intermediate English - Available from 01.06.2022

- 4+ years of professional experience using front-end and back-end technologies - Back-end: NodeJS, Express, Nest, REST API, Docker, Google, Facebook auth, Postgres - Front-end: React, Redux, Redux-Thunk, React-query, Webpack, Material-UI, Vite, Jest, Lodash, HTML, CSS, BEM, SASS/SCSS, LESS, Bootstrap - Intermediate English - Available in 2 weeks after approval for the project

Seasoned Fullstack Web Developer with 4 years of specialized experience in the MERN stack, demonstrating solid expertise in REACT, NODE, EXPRESS, and MONGO DB technologies. Proficient in crafting efficient web applications and contributing to all phases of the SDLC, as evidenced by several successful web projects. Skilled in utilizing modern development tools like Vite, Postman, JSON, Git, and RESTful practices. Adept at leveraging frontend technologies such as React with HMR and Babel/SWC for expedited updates. Holds an educational foundation in Hospitality and Tourism Administration, complemented by coding bootcamp expertise. Technical prowess is further underlined by practical knowledge in Figma, JavaScript, SQL Server, and responsive web design, making them a standout candidate for frontend or fullstack roles in dynamic development environments.

- 22+ years experience in the IT industry as a back-end engineer; - 22 years of experience working with Java; - 10 years of experience working with Python; - 5 years of experience working with Microsoft Azure; - 7 years of experience working with React; - Deep skills working as a full-stack developer; - Strong experience working with Oracle Database; - 2+ years of experience working with Zeebe; - Good skills with Camunda; - Good skills with Scala; - Experience working with JavaScript; - Deep abilities working with Angular; - Experience working with RabbitMQ; - 2 years of experience working in a multinational financial services company; - Good knowledge of working with Microsoft SQL Server, MySQL, Oracle Database, SQL, MongoDB; - Deep skill working with AWS (ElasticSearch, EC2, Lambda, S3, EKS); - Good abilities with Google Cloud Platform (GCP); - Proficient in using Docker, Kubernetes, and Kafka; - Fluent in English, Intermediate German, and Intermediate French.

- 12+ years of experience in the IT industry - 10 years of experience with Angular.JS - Advanced English - Available ASAP

- 6+ years of experience in the IT industry - 5+ years of experience with Angular - 2 years working with Angular.JS 1.x - Fluent English - Available ASAP

- 3 years of professional experience using front-end and back-end technologies - Front-end: React, Redux, React query, Context API, React Hooks, HTML, CSS(SCSS), BEM, MaterialUI, AntDesign, Firebase, Angular 7+, RxJs - Back-end: NodeJS (Express, NestJS), REST API, Docker - Knowledge of PostgreSQL, MongoDB, MySQL databases - Intermediate English - Available ASAP

- Full-stack iOS Developer with over three years of experience, specialized in Swift, Python, and Xcode, with a successful track record of designing, developing, and launching high-quality iOS applications. - Demonstrated expertise in the complete app development lifecycle, skilled in UI/UX design, front-end coding, back-end integration, and database management. - Extensive 11-year background as a Data Analyst, proficient in data visualization, econometric modeling, and using tools like Stata, EViews, and Python to deliver data-driven solutions. - Strong foundation in various statistical techniques and models, including ARDL, Spatial Autocorrelation, Probit and Multinomial Logit regressions, and VECMX model. - Proven experience in project management, including conducting feasibility studies for PPP projects, and an adept understanding of risk assessment and stakeholder collaboration in the economic sector. - A well-rounded educational background with a Master of Arts in Economics and a Bachelor of Arts in Economic Informatics, graduating with honors.

- Highly experienced developer, team lead, and analyst focused on developing customized solutions.3 master's degrees, 15 years of experience, 4 major projects in leadership positions, and numerous Salesforce projects. - Upper-Intermediate English

Software engineer with over 5 years of full-stack development experience in healthcare, aviation, and analytics domains. In-depth knowledge of cloud-native technologies, microservices, and scalable architectures, backed by a Master of Science in Information Systems. Demonstrated ability to integrate AI models and deliver high-impact automation workflows. Proficient in Java, Python, React, and Node.js, complemented by strong experience with AWS, GCP, Docker, Kubernetes, and CI/CD implementations. Remarkable accomplishment includes the development of AI-powered microservices that increased system accuracy, and the execution of end-to-end CI/CD workflows for enterprise-grade applications.

- 4 years of professional experience with front-end and back-end development - Back-end: NodeJS (Express, Nest), REST API, Docker, Google, Facebook auth, Postgres - Front-end: HTML, CSS, BEM, SASS/SCSS, LESS, Bootstrap, Material-UI, ReactJS, Redux, Redux-Thunk, React-query, Webpack, Vite, Jest, Lodash - Available in 1 week after approval for the project

- Experienced Front-End Developer with 4 years of background in front-end development, building scalable, high-performance web applications. - Experienced in React, Angular, and TypeScript state management (Redux Toolkit, RxJS), API integration (GraphQL, REST), and performance optimization for enhanced user experience. - Skilled in designing responsive UIs (Material-UI, SCSS) and implementing secure authentication systems (JWT, role-based access control). - Adept at performance optimization, reusable component development, and real-time data visualization. - Strong collaborative mindset, working closely with UI/UX designers, backend teams, and stakeholders to deliver seamless and efficient front-end solutions.

Computer Science graduate with a record of developing full-stack systems to combat web misinformation, leveraging technologies such as LangChain, FastAPI, and MongoDB. Engineered secure REST APIs in Node.js with JWT for the SplitSmart App, optimizing database performance and spearheading documentation. Conceived a mental health mobile app with real-time chatbot support in Flutter, demonstrating user-experience acumen. Compiled practical experience as a Mobile Money Agent, evidencing proficiency in transaction handling and regulatory compliance. Academically grounded from the University of Malawi, with engagement in leadership roles and proactive community development. Well-versed in Python, Java, JavaScript, along with AI/ML, this candidate is poised for tackling complex challenges in backend development, API design, and system integration.

Software Engineer with 3+ years expertise in full-stack development, focusing on backend and API integrations. Proficient in Python and JavaScript, with strong experience in Django, Django REST Framework, and FastAPI. Comprehensive knowledge of relational and NoSQL databases, with advanced skills in MySQL. Demonstrable success deploying scalable web solutions on AWS with Docker and maintaining codebases with Git. Practical application of Agile/Scrum methodologies, and a proven track record of producing maintainable, well-documented code for data-driven applications, automated systems, and AI-powered tools. Holds a Bachelor's degree in Computer Science and multiple certifications, showcasing a commitment to professionalism and continuous learning in software engineering.

The software engineer possesses a strong foundation in IT and administration with experience in website development and digital marketing. They are proficient in WordPress, SEO, Canva, and various computer networking basics. The candidate excels in collaborative environments, having managed farm operations and IT support, demonstrating leadership in diverse roles. Skilled in aligning business requirements with technical solutions, they have a history of contributing to organizational growth through innovative problem-solving. Notably adept at digital marketing strategies, the engineer's skill set is also finely tuned in office administration and industry awareness.

background Bachelor's degree and background in Computer System Design and Programming. Proven track record of successfully delivering projects on time and within budget. Strong problem-solving and analytical skills. Excellent teamwork and collaboration abilities.

Seasoned Front-end Engineer with over 6 years of experience and proficiency in cutting-edge technologies such as React, Redux, and Next.js. Specializes in React with TypeScript for building robust and maintainable applications.Skilled in engineering dynamic user interfaces, achieving significant performance optimizations and codebase enhancements. Pioneered comprehensive testing strategies to ensure high-quality software and maintain reliability across deployments.Demonstrates proven expertise in responsive design and cloud-based solutions, with recent mastery in Next.js 15 Server Components. Experienced in collaborating on international remote projects, consistently contributing to improved user engagement and overall software performance.Holds key certifications, including Next.js 15 & React and AWS Cloud Practitioner, reflecting a commitment to continuous learning and professional growth.Combines strong technical acumen with essential soft skills such as problem-solving, communication, and teamwork—making this engineer an excellent candidate for advanced Front-end roles.

- 4+ years of experience in the IT industry as a full-stack engineer - FRONT-END: deep knowledge of JavaScript, ES6+, React, Redux, other React tools (Redux-Thunk, React-query, etc.), Material-UI, HTML5, CSS3, BEM, LESS, SASS, Bootstrap, Webpack, Vite, Jest, Lodash - BACK-END: Node.js, Typescript, Express.js, NestJS, REST API, Postgres, Docker, Google, Facebook auth - Intermediate English - Available ASAP

• Software Engineer with 6+ years of experience in software development based on backend technologies (Node.js, ExtJS, PHP /Symfony/). • Experience in next stages of the life cycle of development of business applications. Architecture design, planning, estimation, investigation, development, writing tests, support of existing code. • Understanding of relational database concepts, modular application architectures, design patterns • Development of project architecture, algorithms and models on customer requirements

With over 9 years of experience, the engineer has established a strong reputation in full stack development, exhibiting prowess in Python, Django, React JS, and front-end JavaScript technologies. They have a proven track record in leading and developing scalable web applications, showcasing competencies in database schema design, backend logic, API creation, and performance optimization. Their educational foundation in Computer Sciences is complemented by their ability to work in team environments, driving projects to successful completion and mentoring junior developers. The engineer possesses practical knowledge of cloud services, version control, data scrapping tools, CI/CD pipelines, and has actively contributed to various projects, demonstrating technical agility across domains such as e-commerce, HR management, sentiment analysis, and more.

- 10+ years with data and web scraping, data analysis, and crawler development; - Developed 200+ web crawlers for fashion brands and 700+ crawlers for job offer aggregation including Fortune 500 companies; - Led a team of junior engineers in data crawling projects; - Managed scraping infrastructure, data parsing, and cleaning procedures using pandas and regex; - Skilled in Python, PHP, JavaScript, SQL, and tools like Scrapy, Selenium, Pandas, BeautifulSoup, TensorFlow, and Regex; - Analyzed data and built visualizations with Tableau and Power BI; - Experienced with version control (Git) and Agile/Scrum methodologies; - Used reverse engineering, XPath, CSS selectors, and AJAX calls to handle dynamic websites; - Developed software architecture and contributed to test automation; - Worked on projects involving distributed tasks with Gearman, Selenium, Puppeteer; - Stayed updated on web scraping best practices and emerging technologies.

A seasoned Python Automation Engineer with expertise in web scraping, automation scripting, and data analysis. Demonstrated experience with Upwork, some more companies in my resume. entailed providing robust automation solutions, improving data collection processes, and enhancing analytical capabilities. Proficient in Python programming, using tools such as BeautifulSoup, Scrapy, Selenium, and skilled in database management with MongoDB and Cassandra. Technical acumen in API integration complements a strong foundation in software development practices. This engineer’s skill set, combined with practical experience, positions them favorably for roles requiring efficient data handling and process automation.I can complete 1 small project for free to showcase my skills.