Upstaff Developer Profile Directory

A seasoned Senior Software Engineer with a robust background in Computer Science from Menofia University, boasting extensive experience in backend and mobile solutions. Demonstrates deep expertise in cloud-native technologies, microservices architectures, and Agile project management methodologies. Strong track record in leading development teams, executing full SDLC, and elevating product quality through rigorous testing practices, including unit and integration tests. Advanced proficiency in a suite of technologies, including Node.js, React Native, AWS Services, Docker, and K8s, coupled with a commitment to best practices in software engineering, notably in database optimization, API design, and DevOps techniques.

- Сertified Azure DevOps Engineer with more than 20 years of experience in software and database development (С# and VB.NET) - 5+ years of experience in managing distributed development teams. I have participated in more than 15 projects, mostly of middle and large size, and have been involved in all stages of the release cycle, including analysis, design, coding, deployment, development and testing. I am versed in supporting new applications and developing new features for existing complex applications. - Skilled in refactoring, migration, and performance optimization, as well as in extending the functionality and maintaining the existing features. - Open-minded and goal-oriented team player with strong interpersonal and communicational skills. - Can learn quickly under tough deadlines. - Constantly looking for opportunities to improve my skills and knowledge in system design and algorithms.Industries: Logistics and transportation, banking and finance, information technology and services, professional services, computer software.

- Software Developer with over 7 years of experience - Experience with React over 7 years - Experience with React Native over 3 years, which included migration from Java to React Native and building a medical platform - Experience of work in mixed teams - Upper-Intermediate English

- Experienced UX Researcher with 5 years in mixed-methods research, data science, and software engineering. Leverages a technical background to advocate for user needs in innovative B2C products. - Expertise in leading end-to-end user research practices, with a proven track record in SaaS product development for diverse sectors, including hosting, finance, and social impact. - Spearheaded quantitative and qualitative research, including surveys, user interviews, and A/B testing, leading to data-driven decision-making and product improvements. - Successfully collaborated with cross-functional teams, including product managers, developers, and designers, to integrate user insights into product roadmaps, resulting in enhanced customer-centric features and strategic product offerings. - Proficient in using research tools and technologies such as Looker, Pendo, SUPR-Q evaluation, and natural language processing to conduct comprehensive user research and analysis. - Experienced in implementing design thinking methodologies and conducting ideation workshops to drive innovation in product development. - Native English.

- Motivated software engineer with 7 years of iOS development experience (Swift, SwiftUI, and Objective-C). - Over 30 App Store project launches for iOS/macOS, including VPN, OpenVPN protocols, and deploy VPN servers) - Comfortable in both sole developer and team player roles, team-lead experience - Back-end experience with GoLang (last two years) - Upper-Intermediate English - Available to start ASAP

- 11+ years of experience in web development and 4 years of experience in the Fintech domain. - Proficient in various PHP frameworks such as YII2, Laravel and Symfony. - Experienced in front-end technologies including HTML5, CSS3, SASS, LESS, and JavaScript. - Strong knowledge of APIs and integrating payment gateways (Crypto, APM, S2S). - Expertise in designing and developing secure web applications. - Familiarity with AWS, Microsoft Azure, and other cloud infrastructure management. - Proven track record of successfully delivering projects on time and within budget, receiving commendations for technical prowess, innovative solutions, and team collaboration. - Location: Poland - Available: ASAP

- Award-winning Product UI/UX Designer with 5+ years of experience at top-tier product companies in Ukraine. - Specializes in designing intuitive and visually captivating user interfaces for web and mobile apps in the e-commerce and SaaS domains. Proficient in the entire design process, from ideation and wireframing to prototyping and iterative refinement. - Upper-Intermediate English. - Start ASAP

- Over 5 years of diverse experience in IT and expertise in Swift and various iOS frameworks in various fields (Social Chats/Communication, online language learning, healthcare, food & delivery). - Basic experience with network protocols & vpn (several months projects) - Available ASAP (Deferment from mobilisation till summer 2026) - C1 English

A seasoned iOS developer with over 7 years of experience, specializing in the Apple ecosystem. Proficient in Swift, Objective-C, SwiftUI, and Kotlin, with strong expertise in reactive programming, databases, networking, and multithreading. This engineer is adept in implementing various architectural patterns such as MVVM, Singleton, and Dependency Injection. Their technical background is solidified by a Master's degree in System Engineering and Computer Science. Their professional portfolio spans several domains, including Security, Healthcare, and FinTech, showcasing a versatile approach to app development. Key contributions include developing CI/CD pipelines, performing comprehensive testing, and successful App Store deployment. Strengths include advanced knowledge of networking protocols, database management, and multiparadigm programming, making the engineer a well-rounded candidate for complex iOS projects.

- 5 Years in iOS Mobile Applications development - Strong grasp of Apple development tools (Xcode, LLDB, and Instruments) Currently using LLDB - Is able to mock up proposed user experiences and interactions rapidly - Understanding of Swift, Objective-C memory management, and writing apps with a low memory footprint - Have experience with UI и Unit tests, setting up CI - Hands-on experience developing VPN client applications using Packet Tunnel Provider and NWProtocolWebSocket. - Experience in writing unit, integration, and UI tests - Participated end-to-end, incuding testing, refactoring, and post-launch support. - Upper-Intermediate English

- 7+ years of experience as an .NET Software Engineer - A Full Stack Software engineer with strong knowledge of developing comprehensive solutions from scratch. Expertise in all phases of the software development life cycle (SDLC) - project analysis and planning, requirements analysis, architecture design, development, testing, deployment, and documentation. Using modern technologies that stream data between systems, customers, and partners during the project development process. - English: Upper-Intermediate

- Software engineer with a decade of experience, skilled in a multitude of programming languages including Swift, Objective-C, and Java. - Expert in developing for iOS with in-depth knowledge of frameworks such as UIKit, SwiftUI, CoreData, and an adept understanding of BLE technology. - Led the maintenance and feature development of a well-known iOS VPN and Password Manager application, focusing on optimizing performance and implementing new features. - Utilized MVC architecture alongside Objective-C and Swift to enhance the functionality of the VPN and Password Manager application. - Played a key role in refactoring the VPN application codebase to improve efficiency and maintainability. - Leveraged Alamofire for network management within the VPN application, ensuring reliable and secure connections. - Collaborated closely with the development team to maintain the high quality of the VPN application's user experience and performance. - Upper-Intermediate English

- Master’s degree in Power Plants with honors from National Technical University Kharkiv Politechnical Institute of Power Engineering, June 2018, demonstrating a strong academic background and technical proficiency - Designed modules for Raspberry Pi CM4, focusing on power management systems and implementing various technologies such as Gstreamer, Nvidia Jetpack, and Onvif for enhanced module functionality. - Optimized iwr1843 radar for metal detection, enhancing its capabilities in distance measuring and shape determination on surfaces using technologies like Microwave radar, IMX477R, and Coral TPU. - Developed sensors for smart home ecosystems to monitor household presence and activities, utilizing radar, MLX90640, and smart home technologies for effective embedded software solutions. - Expertise in power management systems, demonstrating advanced skills in designing and implementing robust power director systems for embedded modules. - Proficient in advanced radar system development, with a strong background in enhancing metal detection and implementing complex technologies such as Ballistic mathematics and SDR. - Skilled in integrating machine learning and radar data for smart home applications, focusing on innovative presence and activity monitoring systems. - Upper-Intermediate English

have over 5 years experience in design. Apart from work, my passion is art, I used to be an artist in the past. My experience includes projects of varying complexity, especially designing CRM systems, creating an exclusive user interface and developing UX. I would be happy to join a team that works on projects of various levels and complexity. I am open and easy-going, looking for a cool team to create amazing results together!

- Extensive experience around 14 years in working on On-premises, Cloud Technologies, Network Security. - Experience of 7+ years in designing cloud projects. Experience in designing enterprise public cloud solutions (Oracle OCI, Azure, AWS) experience of stakeholder management within complex organizations. - Extensive experience in implementing Cloud security using the tools CSPM, Prisma Cloud, Netskope CASB, Nessus on Multi cloud environments and security best practices. - Fluent English - Available ASAP

- Java Full Stack Developer with 8+ years of experience, specializing in Java, J2EE, Spring, Hibernate, RESTful webservices, Angular, and Oracle database. - Proficient in design and implementation of complex modules, with expertise in payment processing systems, workflow customizations, and performance optimization. - Successfully owned and delivered end-to-end modules, including handoff generation, auditing, and limit cutoff modules. - Significant experience with role-based authentication, CRUD operations, and integration with 3rd party systems using OAuth2 and PGP encryption. - Skilled in front-end development with AngularJS, creating responsive designs and utilizing tools like Jenkins and SonarQube for deployment and code quality. - Holds a Bachelor's degree in Engineering, demonstrating a strong technical foundation and commitment to continuous learning.

Full Stack Web Developer with hands-on experience in optimizing web application performance, particularly in eliminating N+1 queries and upgrading pagination systems to improve speed and efficiency. Proven track record with the Open Food Network optimizing app loading times by 4% and enhancing CI build times from 12s to 0.2s. Skilled in front-end technologies including JavaScript, React, and Redux, as well as back-end expertise in Ruby on Rails, MySQL, and PostgreSQL. Demonstrated proficiency in Git, GitHub, Heroku, and Netlify, alongside a strong foundation in Mobile/Responsive Development and TDD with tools like RSpec. Holds a Bachelor's degree in Computer Science and Engineering from Anna University and has completed a Full Stack Web Development Program focusing on advanced algorithms, data structures, and project-based learning with international teams. Actively volunteers as a mentor to junior web developers, emphasizing high-quality coding standards and performance optimization.

Software Engineer with 2.6 years of experience in iOS application development, specializing in Swift and Objective-C. Proficient in building applications from concept to deployment with a strong background in working with iOS frameworks, RESTful APIs, third-party libraries, and XCode/Swift coding and debugging. Demonstrated abilities in architecture design, including MVC and MVVM patterns, and incorporating advanced features such as socket integration, push notifications, Google Maps, and payment gateway integration. Contributions to projects like an appointment booking app for a tattoo studio, an international e-commerce app, a mortgage application, and a taxi booking platform showcase technical versatility and a commitment to delivering engaging user experiences. Holds a Bachelor of Computer Applications and is currently pursuing a Diploma in Computer Applications, underpinning a robust foundation in computer science and software development practices.

Software engineer with 4+ years of commercial experience in IT; - Strong skills working with iOS; - Proficient in developing applications using Swift and Objective-C; - Experience with iOS technologies such as UIKit, SwiftUI, Combine, Core Data, and more; - Familiarity with various architecture patterns, CI/CD, OOP principles, and REST API; - Excellent knowledge of OOP and experience in using design patterns; - Proficient in using Git for source control and Jira for tracking systems; - Experienced in Agile development methodologies such as SCRUM and Kanban; - Demonstrated expertise in mobile app development, including UI/UX design, testing, and deployment; - Skilled in using various tools and frameworks such as Firebase, CoreML, and CocoaPods; - Strong problem-solving skills and ability to work with databases such as SQLite, MySQL, and NoSQL; - Proficient in English, both spoken and written, at an upper-intermediate level.

Software engineer with extensive experience in native iOS development, skilled in Swift and Objective-C, and a strong background in Computer Science from Chandigarh University. Notable achievements include leading 5+ projects solo and earning the 'Plobal Apps Rising Star 2024' award. Proficient in UIKit, SwiftUI, and various other iOS technologies, the engineer has a proven track record of contributing to scalable mobile applications, while expertly employing tools such as Git, Firebase, and Realm. With effective communication skills reflected in successful client interactions and a dedication to Agile methodologies, they have demonstrated the ability to drive projects to successful completions.

- 7+ years of commercial experience in IT - Experience in developing applications using Swift, Objective-C - Excellent knowledge in OOP - Experience in using Design patterns - Good logical thinking, self-learning, high level of responsibility - Responsible, hard-working, result-oriented, creative and communicable, team player - Good attention to details - Intermediate English - Availability starting from 01/08/2023

- 11+ years of commercial experience in IT - Experience in developing applications using Swift, Objective-C - Excellent knowledge in OOP - Experience in using Design patterns - Good logical thinking, self-learning, high level of responsibility - Responsible, hard-working, result-oriented, creative and communicable, team player - Good attention to details - Intermediate English - Availability starting from 20/07/2023

- 5+ years of experience in the IT industry - Code in multiple languages, with interest in Flutter/Dart, JavaScript/TypeScript/React/NodeJS and Ruby - Worked with Flutter since the initial release date - Fluent English - Fluent Arabic - Available ASAP

- 7+ years in design and 1+ year of commercial experience with Webflow- Strong understanding of typography, layout, color theory, and user interface (UI) design principles, and experience applying them to web design- Experience creating and managing Webflow templates and style guides for consistent and efficient design implementation- Intermediate English

- 6 years of experience in IT - 5 years of experience with Golang - 6 years of experience with Python - Fluent English - Available ASAP

- 13 years of experience in IT - Proficiency in Python, Pandas. - Data quality for ICC profiles and algorithms for display color calibration - Mathematical modeling (MATLAB, Octave, Comsol, MathCad), software algorithms, numerical methods (algebra, interpolation, regression, nonlinear problems, optimization, ordinary and partial differential equations), machine learning. - Upper-Intermediate English. - Available in two weeks

Software engineer with 11.6+ years of experience specializing in integration solutions using SAP Cloud Platform Integration (CPI), SAP Process Orchestration/Integration (PO/PI), and MuleSoft. Holds OpenSAP certifications for CPI and SAP Model Company, as well as MuleSoft Certified Developer - Level 1 Mule 4. Proficient in creating and configuring interfaces with a diverse range of systems, utilizing technologies such as IDoc, OData, SOAP and REST Web Services, and adept in Java Mapping and XSLT. Skilled in Monitoring and Alert configuration, with a strong grasp of API Management, SSL/TLS, and certificates. With a background in leading junior consultants and teams on multiple projects, the engineer is recognized for expertise in various industry domains including banking, healthcare, and automotive, leveraging programming languages like Java, Groovy, JavaScript, and tools like Anypoint Studio and Eclipse.

- Experienced Software Engineer with 8 years of commercial experience in demanding environments, focused on producing cutting-edge systems for businesses. - Skilled in infrastructure cost optimization, Kubernetes, and Terraform. - Proficient in PHP, JavaScript, Golang, and various databases such as MySQL, PostgreSQL, and MongoDB. - Extensive experience with Amazon Web Services (AWS) and containerization technologies like Docker. - Strong background in computer science with a Master's degree in Computer Science. - Familiar with Agile and Scrum methodologies, as well as software development practices and SDLC. - Excellent communication skills and fluent in Ukrainian with advanced English proficiency.

Accomplished Ruby/Ruby on Rails developer with over 5 years of experience and a strong background in computer science from Ivan Franko National University, class of 2013. Noteworthy expertise in complex system integration, big data processing, and SDLC for energy management, payroll, benefits administration, recycling, and food nutrients management applications. Proficient in a diverse technology stack including Ruby, Rails, Git, SQL, Heroku, Webix JS, AWS, and Capistrano. Demonstrated success in working with both start-ups and established enterprises in Ukraine and the USA, contributing to significant projects that are widely used by public organizations and private businesses, especially in the recycling and HCM domains.

Engineer with 4 years in IT, specializing in analytics, data visualization, and machine learning. Proven track record in Agile project execution and innovative solution design. Proficient in Power BI, Python, R, and various ML techniques. Experienced in database modeling and ETL processes, with certifications in Power BI Data Analyst and expertise in multiple data-centric tools. Skilled in optimizing workflows and algorithms for business intelligence across diverse domains.

- Python Software Engineer with 6+ years of experience in the IT industry - Fluent English - Beginner Dutch, German