Upstaff Developer Profile Directory

All vetted software engineers you need to build AI, Web3, and data Products.
  • Dedicated Full-time commitment for long-term or Time& Material for shorter or ongoing support
  • Europe, Israel, LatAm, United States, Asia geography coverage
  • Remote and hybrid engagement
  • Trial period, no termination fees or hidden costs for transparent and risk-free onboarding.
React
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- 6+ years of experience in IT- Intermediate English- Available ASAP
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Seniority Middle
Location Uzbekistan
JavaScript 5yr.
TypeScript 4yr.
React 4yr.
Redux 4yr.
RESTful API 4yr.
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- Experienced software engineer with about 5 years of commercial front-end development experience. - Proficient in CSS, HTML, SASS/SCSS, JavaScript, TypeScript, React, and Redux. - Skilled in creating user interfaces, developing client-side and mobile applications, and implementing responsive design. - Strong problem-solving and analytical skills with a focus on cross-browser compatibility and responsive markup design. - Familiarity with Three.js for creating and displaying 3D graphics in a browser. - Knowledge of Agile methodologies and experience working in an Agile development environment. - Proficient in using Git for version control and collaborating with team members. - Experience with REST APIs, Postman, Firebase, MongoDB, Docker, Jenkins, and Webpack for building and deploying applications. - Familiarity with software development practices, SDLC, and code review processes. - Strong communication skills and ability to work in a team environment. - Bachelor's degree in Computer Science or related field (if mentioned).
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PHP 5yr.
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- Experienced full-stack developer with a strong background in software engineering and computer science education; - Proficient in Node.js, React, and PHP, with expertise in OOP and TypeScript; - Skilled in creating projects from scratch and working with legacy code; - Experienced in API integrations, including AWS S3, Google Maps, and Mailchimp; - Familiar with various technologies and frameworks such as Docker, PostgreSQL, Redis, and Laravel; - Strong understanding of SDLC, software development practices, and Agile methodologies; - Excellent communication skills and experience working with international customers and teams.
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Seniority Senior
Location Kyiv, Ukraine
JavaScript
React
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- 4+ years of practical experience in web development in the Front-end developer position - He has experience in developing web applications using VueJS, jQuery, JavaScript - He has blockchain experience - Upper-Intermediate English
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Seniority Senior
Location Ukraine
JavaScript 5yr.
TypeScript 2yr.
Angular 2yr.
React 2yr.
Vue-bootsrap 2yr.
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Software engineer with extensive experience in front-end and back-end development, proficient in Core JavaScript and DOM API as well as Angular, React, and Vue. Valuable contributor to cross-functional teams with a track record of optimizing performance and streamlining SDLC through Agile methodologies. Recognized for delivering high-quality, user-friendly software solutions that exceed client expectations and contribute to business growth. Holds a First Class Honours BSc in Information Technology and Business Information System from MiddleSex University and an Advanced Diploma in Software Engineering from Aptech, distinguished by technical rigour and a practical approach to problem-solving. Employs a combination of in-depth technical expertise in the JavaScript ecosystem, software development best practices, and continuous professional development to drive impactful innovations.
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Seniority Senior
Location Zebbug, Malta
Magento 2 4yr.
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- Magento Frontend Developer with more than 3,5 years of experience. - PWA Experience of 5 months - E-commerce systems development. - Informational sites development. - Corporate portals development. - Upper- Intermediate English. - Available ASAP.
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Seniority Middle
Location Rivne, Ukraine
Vue-bootsrap
Vue.js
Vuex
JavaScript
Webpack
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I’ve been a front-end developer since 2019. Flexible, self-dependent, communicable person. I’m looking for ways to develop my programming skills. I have experience with responsive layout, web sites, mini applications in JS and SPA in Vue.js.
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Seniority Middle
Location Minsk, Belarus
JavaScript
Vuex
SQL
jQuery
Vue.js
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Hardworking front-end developer with 3+ years of extensive experience. I’ve worked on several challenging projects and have solid technical knowledge.
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Seniority Middle
Location Belarus
WordPress 5yr.
Vue.js 5yr.
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- More than 5 years of software development experience using Vue.js, - More than 5 years using WordPress technology. - Intermediate English. - Available ASAP.
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Seniority Senior
Location Ukraine
JavaScript 7yr.
Vue.js 5yr.
Python 3yr.
PostgreSQL 3yr.
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Seasoned Full-Stack Engineer with 6+ years of significant experience in designing and building sophisticated web applications, with a particular strength in revenue management systems for the Japanese market. Known for exceptional proficiency in Python, JavaScript, and modern web technologies like Django, Flask, Vue.js, and React. Adept at all stages of software development from requirement analysis to deployment, consistently delivering projects that prioritize user experience and maintainability. Distinctive competencies include deep understanding of data visualization as evidenced by the implementation of complex features for SaaS platforms, combined with proficiency in critical full-stack development tools and practices such as Docker, CI/CD, and AWS. Recognized for a track record of remote freelancing success on Upwork, citing 100% job satisfaction over 24 jobs and more than 5,623 remote hours. Backed by a solid foundation in computer science with a completion of the reputable CS50x course from Harvard University.
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Seniority Senior
Location Banha, Egypt
Vue.js
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- 11+ years of experience in Full Stack Engineer with main focus on JavaScript/TypeScript. - Experienced with all stages of the development cycle for dynamic web projects. - Well-versed in React/Redux & Vue & Angular. - Fluent English - Available ASAP - No vacation plans
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Seniority Senior
Location Quebec, Canada
JavaScript
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- 4+ years of commercial experience in IT. - Experience in developing applications using JavaScript (Vue). - Good knowledge in JavaScript - Experience in Single Page Applications Development - Intermediate English - Available ASAP
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Seniority Senior
Location Ukraine
JavaScript 3yr.
Vue.js 3yr.
Vuex 3yr.
Bootstrap 4 3yr.
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Good understanding of HTML5 and CSS3. Highly proficient with Vue.js framework and its core principles. Ready to start ASAP.
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Seniority Middle
Location Minsk, Belarus
JavaScript 7yr.
WordPress 7yr.
Vue.js 5yr.
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As an experienced web developer with 7 years of experience specialising in developing WordPress websites of varying complexity. In the last 3 years, has focused on honing my skills in JavaScript, with a particular emphasis on using Vue/Vuex and WordPress REST API.
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Seniority Senior
Location Kyiv, Ukraine
Vue.js 12yr.
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- 14+ years of experience in Web & Mobile App development - Fluent English - Available ASAP - No vacation plans
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Seniority Senior
Location Nanaimo, Canada
jQuery
Vue.js
Vuex
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- 8+ years of commercial experience in IT - Experience in developing web applications using Vue.JS (Vuex, Vuetify) - Intermediate English - Good logical thinking, high level of responsibility. Communicative, responsible, hardworking, result-oriented, and team player - Available ASAP
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Seniority Senior
Location Republic of Moldova
C/C++/C#
Python
Java
HTML
CSS
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I'm a second-year Computer Science student at Nanyang Technological University with a passion for full-stack development and cloud engineer , I’m seeking internships to combine my technical expertise and business acumen to drive innovative, tech-driven solutions.
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Seniority Intern
Location Singapore, Singapore
SDLC 27yr.
MySQL 27yr.
Responsive Design
Data Lake
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Software engineer with a deep foundation in RDBMS design, including extensive experience in developing and bug fixing MySQL. Expertise in client-server protocols, lexical analysis, parsing, and SQL commands. Highly skilled in C and C++, with notable contributions like the MySQL++ API and software critical to the Mars Rover mission. Holds a BSc in Technology, with proficiencies in English, French, Italian, Greek, and Slavic languages. Recognized with numerous industry awards, including the 'MySQL Rock Star 2025'.
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Seniority Expert
Location Agia Napa, Cyprus
Python
PySpark
Docker
Apache Airflow
Kubernetes
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- 4+ years of experience as a Data Engineer, focused on ETL automation, data pipeline development, and optimization; - Strong skills in SQL, DBT, Airflow (Python), and experience with SAS, PostgreSQL, and BigQuery for building and optimizing ETL processes; - Experience working with Google Cloud (GCP) and AWS: utilizing GCP Storage, Pub/Sub, BigQuery, AWS S3, Glue, and Lambda for data processing and storage; - Built and automated ETL processes using DBT Cloud, integrated external APIs, and managed microservice deployments; - Optimized SDKs for data collection and transmission through Google Cloud Pub/Sub, used MongoDB for storing unstructured data; - Designed data pipelines for e-commerce: orchestrated complex processes with Druid, MinIO, Superset, and AWS for data analytics and processing; - Worked with big data and stream processing: using Apache Spark, Kafka, and Databricks for efficient transformation and analysis; - Amazon sales forecasting using ClickHouse, Vertex AI, integrated analytical models into business processes; - Experience in Data Lake migration and optimization of data storage, deploying cloud infrastructure and serverless solutions on AWS Lambda, Glue, and S3.
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troubleshooting 10yr.
RDBMS 1yr.
IBM Rational ClearCase
Team Leadership
Project Management
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With over a decade of IT support and customer relations, the engineer has a solid track record of driving growth and process improvements in tech-centric roles. Experience includes resolving complex technical issues, optimizing IT systems for improved user experience, and leading cross-functional teams to success. Highlights of their achievements include a significant increase in company revenue, a high rate of customer satisfaction, and earning accolades for exceptional leadership. The engineer's professional background is underscored by impactful roles in operations management and IT support without specifying a computer science education or software engineering particulars.
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C/C++/C# 5yr.
Robot Framework 5yr.
.NET Core 5yr.
ASP.NET Core Framework 5yr.
ASP.NET MVC
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Senior .NET Developer with over a decade of professional experience, showcasing advanced competencies in scalable and secure web application development, microservices architecture, and cloud solutions. Expertise in crafting optimized code by leveraging C#, ASP.NET Core, Entity Framework, and diverse databases like MS SQL Server and MongoDB. Proven track record in improving system performance, maintainability, and accelerating development cycles through SOLID principles and modern DevOps practices. Demonstrated ability touring in enterprise-level API development, and security enhancements, further leveraging CI/CD, containerization, and serverless technologies in both Microsoft Azure and AWS environments. Adept in applying design patterns and software engineering principles like CQRS, DDD, and the Akka.NET actor model to build robust and fault-tolerant systems.
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Seniority Senior
Location Ukraine
JavaScript 5yr.
SQL 5yr.
PHP 2yr.
Java
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Software engineer with a Bachelor's degree in Computer Science from Illinois State University, exhibiting a solid grasp of programming methodologies and a 3.1 GPA. Accumulated over four and a half years of professional experience in web development, specializing in technologies such as Vue.js, Joomla, PHP, and cloud computing with AWS. Demonstrated proficiency in deploying complex applications to Kubernetes clusters and optimizing web content. Showcased commitment to continuous improvement by contributing to open-source projects and designing tools like a real-time log analyzer with NUXT.js and a Laravel command-line tool. Robust technical skill set includes JavaScript, PHP, Python, Java, Swift, Rust, alongside tools like GitHub, NoSQL, and REST APIs, ensuring the engineer is well-equipped to tackle a diverse range of software challenges and contribute significantly to any development team.
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Selenium 8yr.
Appium 5yr.
Java
JavaScript
Cypress
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- 10+ years in software quality engineering, automation testing, and SDET. - 4 years of experience with Python for automation development, scripting, and testing. - Deep skills with Java, Javascript, Typescript, PHP, Groovy, Swift, Kotlin, Ruby, and Go. - 5 years of expertise in mobile test automation using Appium. - Skilled in using Robot Framework for scalable test automation, focusing on RPA and API testing to streamline workflows. - 8 years of experience with Selenium/Selenide for web automation. - Extensive work with relational and NoSQL databases, including PostgreSQL, MySQL, MongoDB, and structured data formats like CSV/XML. - Strong background in CI/CD automation, including Jenkins, Docker, Docker Compose, CircleCI, and Kubernetes. - Experience with various QA tools such as Cypress, Cucumber, Playwright, WDIO, Browserstack/Lambdatest API, REST Assured, Postman, Axios, SOAP, JUnit/TestNG, PyTest, Allure reports, ReportPortal, Guava, AutoIT3 etc. - Created custom automation frameworks (Cypress-based) and migrated legacy QA systems, including CMS. - Experienced in API testing with GraphQL and RESTful services. - Testing techniques: Black-box (BVA, EP, CE, EG), Grey-box (pairwise, traceability matrix, decision tables), and White-box testing (statement analysis). Smoke/Regression/Release testing. - Test strategies development, with test plans, test cases etc. - Documentation, test reporting & analysis creation & maintenance.
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Seniority Senior
Location Bulgaria
SQL/NoSQL 25yr.
OpenAPI 10yr.
.NET Maui 2yr.
Kotlin Multiplatform Mobile 2yr.
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- Having over 25 years of experience as a Senior Software Solutions Architect, Hands-on Technical Team Leader, Full Stack Software Engineer, Business Intelligence (BI), and Applicative Database Administrator (ADBA) - Engineer with extensive experience in software development, demonstrating proficiency in multiple programming languages, including Java, C#, and Python. - Proficient with modern software development methodologies such as Agile and Scrum, ensuring project delivery aligns with business requirements and timelines. - Strong background in computer science with a focus on developing scalable and efficient code, contributing to robust software architecture. - Experience in full software development life cycle (SDLC), including requirements analysis, design, implementation, testing, and maintenance. - Expertise in applying best practices and patterns in software engineering to produce high-quality and reusable code. - Demonstrated success in past projects by optimizing system performance and enhancing user experience through innovative technical solutions.
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Seniority Expert
Location Ramat HaSharon, Israel
C/C++/C# 5yr.
.NET Core 5yr.
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- Full-Stack Developer with 5 years of experience, specialized expertise in C#, .NET frameworks, Angular, and various other modern technologies. - Demonstrated excellence in the design and implementation of user interfaces using HTML/CSS, TypeScript, and JavaScript, with a keen eye for transforming complex database information into accessible analytical insights. - Proven experience with automated validation, shipment update services, database design, and software development practices including OOP, SOLID principles, and Scrum methodology. - Strong background in computer science with a Bachelor's in Applied Mathematics and Informatics, enhanced by comprehensive skills in development tools such as Git, Visual Studio, and Azure.
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Java
PostgreSQL
Hibernate
Spring Boot
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- 15+ years of experience as a Software Engineer, specializing in Java, microservices, and system design for backend development; - Expertise in developing and maintaining scalable web applications and microservices with a focus on performance optimization; - Strong experience in building applications using Spring Boot, Kafka, Docker, and RESTful API design; - Proficient in integrating third-party APIs and cloud-based solutions, with a strong background in Azure and AWS platforms; - Extensive experience with SQL (PostgreSQL, Oracle DB) and NoSQL (MongoDB) databases; - Familiar with CI/CD pipelines, using Jenkins, GitHub Actions, and AWS SDK for continuous integration and deployment; - In-depth knowledge of Agile methodologies, contributing to sprint planning, code reviews, and project delivery in international teams; - Experience in unit testing, integration testing, and ensuring high code quality with tools such as JUnit and RestAssured; - Worked on high-stakes projects in the finance, telecom, healthcare, and insurance industries, delivering critical software solutions; - Strong leadership and mentoring experience, managing development teams and delivering successful projects.
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Seniority Expert
Location Krakow, Poland
Unix 5yr.
FPGA
VHDL
Intel
XILINX
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- 7+ years of experience as an Embedded Software Engineer with a focus on C/C++ programming, FPGA development, and VHDL; - Expertise in developing embedded systems, designing and implementing low-level software for hardware interfaces and device drivers; - Strong background in FPGA design using VHDL and Verilog, with experience in FPGA programming and hardware/software integration; - Experience with real-time operating systems (RTOS), and communication protocols such as SPI, I2C, UART, and CAN; - Proficient in C/C++ programming, with strong debugging skills using tools like GDB, JTAG, and Oscilloscopes; - Worked on hardware/software co-design and FPGA simulation and verification; - Familiar with Linux and Windows environments, with cross-compilation for embedded platforms; - Contributed to designing and developing embedded systems for automotive, telecommunications, and consumer electronics sectors.
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Go
Node.js
TypeScript
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A seasoned Fullstack Golang Developer with over 5 years of specialized experience in Golang, and a broader 9 years with Node.js, complemented by proficiency in other languages such as TypeScript, PHP, and Python. The candidate showcases a strong foundation in computer science with a Bachelor of Engineering in Information Systems Engineering. Throughout their career, they have engaged in various remote roles, underlying their expertise in building scalable distributed systems and web applications. Their open-source contributions, such as 'asyncmachine-go', demonstrate their ability to innovate in control flow libraries. With a history of optimizing financial tech systems and developing complex project management PWAs, the engineer has a proven track record in software engineering, underpinned by knowledge of databases and DevOps, including MySQL, PostgreSQL, and Docker.
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Responsive Design
Website optimizations
Web Development
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solid foundation in front-end development Demonstrates expertise in JavaScript, React, HTML, CSS, and TailwindCSS, with a proven track record of optimizing websites and debugging.
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Seniority Middle
Location Lagos, Nigeria
React 5yr.
GraphQL 3yr.
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- Frontend Developer at Liorra Tech and previous experience as a Freelance Web Developer and an IT Technician, embodies a strong background in full-stack development and cloud architecture. - Mastery in React, Apollo GraphQL, and technical support, offering robust solutions in technology services and leading digital transformation projects. - Proven history in enterprise-level software implementation and cloud solutions, adept at optimizing operations to meet business objectives. - Academically fortified with a Bachelor's Honors in Computer Engineering ongoing at Cape Peninsula University of Technology, with prior Bachelor's and Higher National Diploma in the same discipline. - Over 5 years of practical industry experience, with specialization in React and related web technologies, empowering businesses across Western Cape, South Africa. - Adept in software development practices, capable of guiding teams through SDLC and deploying innovative technologies that contribute to enterprise efficacy.
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Seniority Middle
Location Cape Town, South Africa
Swift 3yr.
Kotlin 2yr.
SwiftUI
Viper
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Software Engineer with 3.5+ years of experience, specializing in iOS development with Swift and Android development with Kotlin. Proficient in leveraging frameworks like UIKit, SwiftUI, CoreData, AVFoundation, and technologies like MVVM, VIPER, and Clean Swift. Demonstrates strong proficiency in application performance, memory management, and advanced photo editing application development. Holds a Computer Engineering degree and has a solid foundation in coding principles and software development practices. Worked on notable projects involving video streaming, e-commerce applications, and organizational management tools.
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.NET
MS Dynamics 365
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- Dynamics 365/Power Platform Engineer with 3+ years of solid experience designing, developing, and implementing CRM systems and Power Platform solutions tailored to business needs. - Skilled in Power Pages, Power Apps (Canvas & Model-Driven Apps), Power Automate, and Dynamics 365 development for CRM systems across different industries. - Has experience with Azure AD B2C, Azure Functions, Azure Pipelines, and LogicApps, ensuring seamless deployment and secure user authentication for CRM systems and portals. - Hands-on experience with .NET/C#, JavaScript, TypeScript, React, Vue.js, and HTML/CSS for plugin development, feature enhancements, and custom web resources. - Pending February 2025 Certifications: Power Platform Fundamentals, Power Platform Developer Associate
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Seniority Senior
Location Lviv, Ukraine
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