Upstaff Developer Profile Directory

- 6 years experience with Python - Proficiency with Python, SQL, ETL, AWS Services. - Experience with scraping data (tiki, lazada, shopee, aliexpress), Amazon Dropshipping Business projects, e-commerce platforms, platforms of digital data. - Location: Vietnam

Software engineer with over 10 years of experience, specializing in web accessibility and backend development. Holds professional working proficiency in English and native level Ukrainian, with understanding of Polish and basic German. Holds Deque University certifications, showcasing depth in web accessibility knowledge. Successful track record in leading the web accessibility audit & design team and founding Inclusive IT, a company dedicated to testing websites for WCAG 2.1 standards. Technical contributions include valid cross-browser HTML/CSS coding. Experience also includes managing inclusive education projects and developing software solutions with C++, Qt, and Python/Django.

With over a decade of specialized experience in frontend development and accessibility engineering, this candidate stands out for their expertise in creating inclusive digital environments compliant with WCAG standards. Their deep understanding of user-centric design is reflected in their proficiency with HTML, CSS, TypeScript, and modern frameworks such as Angular and React. They have a proven track record in performing detailed accessibility audits, leveraging assistive technologies and testing tools to enhance project compliance with European and international laws. The candidate's front-end development experience is complemented with practical proficiency in using ARIA patterns, semantic HTML, and establishing keyboard navigation practices. Their portfolio includes close collaboration with cross-functional teams to successfully implement fixes and features that significantly improve user accessibility, ensuring rigorous adherence to accessibility audits and VPAT documentation.

A seasoned software engineering leader with over two decades of global industry experience specializing in BFSI, AI-driven digital transformation, and Salesforce. Has an agile and DevOps-focused engineering background with a strong understanding of end-to-end AI workflows. Boasting a history of significant contributions in DevOps pipeline optimizations, cloud technologies, and AI model monitoring. Expertise in navigating complex project management within Agile frameworks. Proven success in leading high-impact AI transformation projects, ensuring scalability and operational excellence. Technical skills include AWS Cloud, Agile + DevOps Integration, and Salesforce, alongside proficiency in implementing Generative AI and LLM solutions.

- Over 5 years of expertise as an Android developer specializing in Kotlin. Experienced in leading and collaborating with development teams to ensure successful project delivery. - Skilled in introducing new functionalities, transitioning projects from Java to Kotlin, and adhering to WCAG accessibility standards. - Proficient in software architecture, quality assurance, and agile methodologies. Also experienced in Java software engineering, web development, and instructional roles. - Comprehensive understanding of Android UI/UX principles, clean architecture, and a range of libraries and tools. - Solid proficiency in Java, Kotlin, RxJava, Coroutines, Android Jetpack, Firebase, REST APIs, and various development and debugging tools. - English proficiency at an upper-intermediate level. Available to start immediately.

- Backend and data engineer with ops skills and an interest in front-end development; - Experienced in Ruby on Rails, Elixir, Python, Node JS, React, and Vue; - Proficient in designing and implementing microservices and APIs; - Skilled in working with distributed systems and databases; - Strong focus on writing clean, efficient, and tested code; - Experienced in CI/CD, code quality, and automatic delivery and deployment; - Familiar with Agile methodologies and working in SCRUM teams; - Upper intermediate English.

Software engineer with over 25 years of development experience, possessing extensive expertise in Delphi (VCL/FMX) and database management across various sectors. Notable for implementing performance-focused custom applications, this engineer's technical proficiency also spans C#, Visual Basic, SQL, and multiple database systems. They have a strong track record in system administration and IT support, having worked with reporting tools like Crystal Reports. Holds a Diploma in Computer Program from BIG SERVICE, showcasing a solid foundation in computer science.

- Strong knowledge of C/C++, 20 years of experience in firmware and embedded development using different types of micro-controllers and microprocessors - Design of different measuring units for MWD-systems, SCADA systems for industrial equipment - Experience and understanding of OOP, component design - Deep experience in developing measuring equipment - Involvement in long-term projects, which gave me strong experience in various areas of software design and development, including design of client-server systems, low-level firmware development and testing projects. - Solid knowledge in using various tool required for successful project development: Issue and Bug Tracking systems, Source Control systems, Code Review tools. - Active teamwork attitude, quick learning ability, good skills in problem solving. -Sociable, result oriented, Good logical thinking - Intermediate English. - Availability starting from ASAP

- 6+ years of work experience in a variety of exciting projects, working at all stages of the development cycle. - Excel at working on modular systems and using current development practices to assure that every project works in the most efficient manner and is adaptive to any new enhancements required.

- Software engineer with 10+ years of experience, specializing in Web and Blockchain technologies; - Expertise in Solidity for designing and deploying smart contracts; - Experienced in using Hardhat and Truffle for smart contract development and testing; - Deep abilities in Ethereum ecosystems and Solidity-based architectures; - Skilled in Ether.js and Web3.js for building dApps; - Proficient in designing complex systems, including yield farming and DeFi protocols; - Strong background in full-stack development; - Skilled in Node.js, Express.js, PHP, Java, and Kotlin for backend development; - Experienced in front-end development with Vue.js and EJS JavaScript frameworks; - Proven experience leading projects from concept to deployment across the entire SDLC; - Skilled in mentoring remote teams and collaborating effectively across functions; - Experienced in solution architecture, designing scalable systems, and ensuring smooth integration across platforms.

- Python Software Engineer with more than 4+ years of experience in software development - Proven ability to design and build telegram chatbots from scratch, implementing functionalities like search algorithms (CV parsing), voice recording, and payment processing integrations (Stripe, Liqpay). - Has experience integrating GPT with telegram bots - Expertise in database management (PostgreSQL, SQL Alchemy) and data security. - Implemented continuous integration and deployment practices (Jenkins, Docker) for streamlined deployments. - Excellent knowledge of common software engineering practices, like OOP principles, modern design patterns, test-driven development, continuous integration, and continuous deployment

Distinguished Software Engineer with over 6 years in technology, specializing in Citrix XenApp, VMware, AWS, and Blockchain. Expert in ITSM, AI, Citrix administration, and infrastructure optimization, achieving 99.9% system uptime and a 20% reduction in operational costs. Proficient in cross-functional team leadership, automation scripting, and managing high-availability solutions. Holds a Bachelor's in Computer Science and actively engages in Blockchain and Web 3.0 development, signifying a robust mix of experience and continuous learning.

-As a senior Programmer and Blockchain developer, with over 6 years of development, I am an expert in NFT Website, NFT Art Generation, and NFT Marketplace, Solidity, Web3, EVM based network chains, Custom smart contracts, ERC20/721, ERC1155, NFTs, IDO's, Bridges Block explorers, UI Web3 Dapps Integration, IPFS. - Smart Contract Development (Solidity/ Rust/ Anchor Framework/ Cosmwasm) - Cardano smart contract by utilizing CosmWasm smart contract by utilizing Rust CosmWasm. - Solanasmartcontractimprovement(Unittest,Solana-program-library,Solana-web3,Raydiumtradeandorca)by utilizing Rust and Anchor system. - Polkadot Relay Chain using Substrate in Rust programming. - Smart contract advancement in networks (Ethereum, BSC, Matic/Polygon) by utilizing Solidity. - Uniswap V2, V3, Curve (Yearn, Convex), Sushiswap, Quickswap, etc. - Written smart contracts for ERC20, ERC223, ERC721, ERC1155, ICOs, airdrop, Vesting, MultiSig, Wallet, etc - DeFi, Dex protocols - Front-end development with Smart contract integration by utilizing Web3, truffle. React (Redux/Thunk/Saga), Typescript, Node js. - NFT minting website andNFT marketplace development(Create a listing by admin, flat&Crypto payment,Bundle Sale/ Bulk Transfers, Drop)

- Senior software developer with about 7 years of experience - Web applications for crypto finance (including wallet for Ethereum using ether.js (deposit, withdrawal, staking operations) and web3.js (connect Metamask, get balance, withdraw and deposit tokens) - Maintaining web applications with Front-end jQuery, Vue.js, React.js, React Native, Angular.JS, Angular 2+ and PHP Laravel, WordPress - Hands-on experience of both working as a single developer and being a part of big Agile teams.

Software engineer with a Bachelor’s in Computer Science and 8 years of experience specializes in blockchain development, smart contracts, and DApps, mainly in Solidity and Rust. Demonstrated expertise in Ethereum and Solana ecosystems with significant projects such as a fully-featured NFT marketplace and the first multichain swap protocol. Excelled in developing secure, scalable solutions with 99% test coverage in Rust, contributing to the advancement of decentralized protocols. Adept in various technologies including Go, Move, Web3, DeFi, and smart contract auditing, positioning as a valuable asset for blockchain-centric roles.

Blockchain Developer | Web3 Engineer | Smart Contract Specialist Experienced Blockchain Developer with a deep understanding of decentralized applications (dApps), smart contracts, and blockchain architecture. Skilled in Ethereum, Solana, and Binance Smart Chain (BSC), with expertise in Solidity, Rust, and Web3 integrations. Passionate about building scalable, secure, and efficient blockchain solutions that drive innovation in DeFi, NFTs, and enterprise blockchain applications.Key Skills & Expertise: ✅ Blockchain Development: Smart contracts, tokenomics, DeFi protocols, NFT marketplaces ✅ Smart Contract Programming: Solidity, Rust, Move, Cairo ✅ Fullstack Web3 Development: Node.js, React, Next.js, Nest.js, Web3.js, Ethers.js ✅ Blockchain Frameworks: Ethereum, Solana, BSC, Polygon, Hyperledger ✅ Security & Auditing: Smart contract security, cryptography, vulnerability mitigation ✅ Infrastructure & DevOps: IPFS, The Graph, Oracles, Infura, Alchemy, Hardhat, Truffle ✅ Consensus & Protocols: Proof of Work (PoW), Proof of Stake (PoS), Layer 2 scaling

- Approached 3D projects with multiple techniques, from modeling to photogrammetry and VR/AR. The quality of my work has won me multiple competitions and sponsors for the projects I worked on. - Fluent English. - Native Italian - Basic Portuguese - Available ASAP

- Passionate Engineer with 15+ years of experience committing complex solutions in various areas from shopfloor automation to finance applications and commissioning digital transformation projects. - In-depth knowledge about developing and commissioning manufacturing execution systems and Industry 4.0 applications - Hands-on experience in .NET C#, C++, and VB programming. - Hands-on experience in database development, normalization, optimization SQL and NoSQL databases, MS SQL Server Reporting Services - Development with Honeywell and OSIsoft PI Interfaces MES solutions - Hands-on with different networks TCP/IP, Modbus, Profibus, Industrial Ethernet, CAN - Advanced English

Senior Software Engineer with over 20 years of experience in embedded systems, full-stack development, and 3D graphics across medical devices, aerospace, and gaming industries. Expert in C/C++, Qt/QML, OpenGL (including Safety Critical SC), GLSL, and Python, with strong proficiency in Agile methodologies, Azure DevOps, Jira, and automated testing frameworks. Proven track record in developing complex real-time systems, optimizing performance, and leading cross-functional teams. Holds a B.S. in Computer Science with a focus on Simulation and Graphics.

- Hubspot CRM expert focused on client relationship management, turning complex challenges into streamlined solutions. - Implemented and configured 70+ HubSpot CRM systems, enhancing automation, sales processes, and analytics. - Successfully managed and consulted over 200 Hubspot CRM implementations for clients reaching up to $2.5M/month in revenue and achieving significant growth targets. - Spearheaded Solution Architecture accreditation, driving a 12% monthly revenue increase through expanded service offerings. - Developed and implemented a HubSpot-based project management tool, enhancing team efficiency and project tracking. - Coached/managed multiple client service teams with measurable KPIs

Background in NetSuite/ERP, UiPath/RPA, and Celigo/Boomi/iPaas. Leveraging expertise in these technologies, implemented and optimised complex systems to streamline operations, enhance productivity, and drive business growth.Understanding of business processes, excel in analysing requirements, designing efficient solutions, and leading end-to-end implementation projects.Proficiency in integrating diverse systems and automating repetitive tasks through UiPath/RPA has resulted in significant cost savings and improved operational efficiency.Proficiency in Celigo/Boomi/iPaas enables seamless data integration and synchronisation, facilitating real-time insights for informed decision-making.Committed to delivering high-quality results, possess problem-solving skills, attention to details, and a collaborative approach that fosters effective teamwork.Track record of success, ready to contribute expertise to drive digital transformation and optimize business processes for organisations.

With a Ph.D. in Computer Science and a comprehensive background in Electrical and Electronics Engineering, this candidate has over two decades of adeptness in AI, cloud computing, and big data analytics. The engineer is skilled in strategic project management, with a strong focus on the application of machine learning pipelines and cloud infrastructure development. Technical proficiencies include expertise in NLP, data analysis, IoT, and using advanced cloud platforms like AWS, Google Cloud, and Microsoft Azure. The candidate's teaching experience and substantial contributions to industry publications underscore a balanced blend of practical and theoretical knowledge. The engineer's prior roles demonstrate significant leadership in shaping AI strategies and guiding data-driven innovations.

Technical Manager with over 15 years of experience in the IT industry, excelling in web application development and leadership roles. Expert in PHP, Node.js, and JavaScript, with a strong background in database management using MySQL and PostgreSQL. Highly adept in IoT applications, leveraging tools like GeoServer for spatial data management. Maintains a deep understanding of the software development life cycle (SDLC), agile methodologies, and client management. Demonstrates solid technical project management skills, aligning business objectives with innovative technical strategies. Holds an MSc in IT with outstanding academic achievements, underpinned by a solid foundation in programming languages and software engineering principles.

- Experienced software engineer with 20+ years in Linux-based systems and infrastructure automation; - Skilled in developing networking tools and microservices in C, Go, Rust, and Python; - Hands-on experience with embedded platforms such as OpenWrt and LEDE; - Worked with distributed networking tools including vallumd for IPset distribution; - Experienced in firewall setup, routing, and network performance tuning; - Built CI/CD pipelines and automated deployments using Terraform, Ansible, GitLab, and Docker; - Familiar with Kubernetes and infrastructure-as-code practices in hybrid environments; - Used Bash and Python to automate system processes and infrastructure tasks; - Worked on wireless and telecom-related projects, including Express Wi-Fi and Android-based OTA tools; - Maintained and customized Linux distributions across ARM, MIPS, and x86 architectures for embedded and cloud systems.

Software engineer with 3+ years of experience specializing in VoIP technologies including SIP trunking, WebRTC, and voice API integration. Holds a Bachelor's in Electrical and Computer Engineering and pursuing MS in Electrical, Electronic, and Communications Engineering. Proven expertise in designing scalable microservices architectures, asynchronous processing, and implementing CI/CD pipelines with infrastructure-as-code. Skilled in Python, Django, REST/GraphQL APIs, and full-stack development delivering real-time, reliable voice and web platforms.

- 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.

- 24+ years in game development -Involved in VFX throughout his game dev career - Available to start ASAP - Extensive experience as a Unity3D C# developer and 2D/3D VFX artist, working on a wide range of projects from mixed reality applications for Hololens, cross-platform tools, to games with on-chain business logic. - Significant contributions to AR/VR applications, including development for indoor navigation, augmented reality software for smart-city solutions, and VR games and experiences. - Leadership roles in project development, serving as Art Director, Lead Developer, and Lead Artist on various projects, indicating a strong background in both technical and creative aspects of software and game development. - Diverse project portfolio, including work on augmented reality for plastic surgery visualization, body measurement technology for smartphone cameras, and 3D visualizations for medical and industrial applications. - Involvement in promotional and interactive demos, demonstrating the ability to create engaging content for startups and established companies alike, such as Zibra.AI and Rapid Medical Parts. - Development of a wide range of applications and games for various platforms, including web, mobile, standalone, and AR/VR platforms, highlighting versatility and adaptability in software development. - Upper-Intermediate English

- IT experience starting in 2012; middle frontend developer since 2015. - Experience with the full lifecycle of designing, developing, installing, configuring, and maintaining applications on SharePoint 2016/2019, 2019 Online, Office 365, Power apps, Dynamics CRM, Power BI - Upper-Intermediate English

- Senior Software Developer with over 9 years of experience in full-stack development and project management, skilled in Python, C#.NET, JavaScript, and more. - Proven track record in leading teams and delivering 20+ projects in telecom, fintech, and agri-tech sectors. - Expertise in backend architecture, API development, AI integration, and agile methodologies. - Demonstrated success in digital transformations, SDLC management, reducing operational costs, and enhancing system reliability. - Holds a Bachelor's degree in Business IT from the University of Greenwich and advanced computer studies diplomas. - Recognized for mentoring junior developers and achieving a 100% client satisfaction rate on enterprise-level projects.

A skilled Full Stack Developer with a recent boot camp completion that equipped them with modern technical and digital skills, supplemented by over 10 years of experience in administrative roles which involved office management and data reporting. They possess a strong mix of technical skills including proficiency with Microsoft Office Suite, HTML, CSS, JavaScript, APIs, and a grasp of UX Design and App Marketing. Furthermore, they understand version control through Github, emphasizing their adaptability to contemporary software development practices. Their commitment to improving work efficiency is demonstrated by a 20% reduction in administrative errors and the processing of high-volume data entry tasks at a 90% accuracy rate. With a foundation in computer practices and ongoing full-stack development education, they are well-prepared for roles that demand both cutting-edge coding abilities and proven administrative expertise.

- Master's Degree from the Kharkiv National Aerospace University - Developed a Smart Thermostat with self-learning capabilities and remote mobile app control, utilizing MSP430 microcontroller, ZigBee, and ultra-low power technologies. - Designed an Energy Management System for remote heating control, incorporating automatic and manual modes, and leveraging STM32, Qualcomm Snapdragon 410, and PCB design. - Created firmware and PCB design for a Pump Monitoring System with a GUI for pump operation control, employing ESP IDF, FreeRTOS, and memory management. - Engineered a Mosquito Sensor to detect and transmit data on specific insect forms using STM32L4, LoRa, and GPS technology. - Expert in programming embedded systems with experience in C, and C++, and integrating various communication protocols such as I2C, SPI, and UART. - Proficient in using embedded Linux for system development, including working with Qualcomm Snapdragon and managing system resources. - Experienced in mobile application integration for both iOS and Android platforms, ensuring seamless user interaction with embedded devices. - Upper-Intermediate English