Hire Vetted Web Application Engineers at Upstaff - Page 7
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.
Web Application
All
Web Application
Data and Analytics
Operations and Cloud
Mobile Application
Digital Platforms
Blockchain
Design and Creative
Quality Engineering and Testing
Delivery Management and Analytics
Desktop Software
Writing and Translation
Marketing and SEO
Scripting and Automation
Embedded Systems
Low-Code
GameDev
Industrial Engineering
React Native
React
JavaScript
TypeScript
HTML/CSS Preprocessors
Accomplished Senior React Native Developer with a solid 7-year track record in mobile application development, underpinned by a bachelor's degree in Computer Science and Engineering. Expert command of React Native, JavaScript, and TypeScript, complemented by proficiency in leveraging ancillary technologies such as Redux, Firebase, and RESTful services. Demonstrated prowess in modern software engineering practices, including unit testing, code reviews, SDLC, and agile methodologies. Adept at fostering junior developers' growth while navigating complex project ecosystems and enhancing app performance and user experience, distinguishing themselves as a potent candidate for technology-driven roles.
JavaScript
React
TypeScript
Node.js
Redux
A senior software engineer with over 6 years of full-stack experience specializing in React, TypeScript, and Node.js. This engineer has a proven track record of enhancing user engagement and retention through innovative UI design and application development. Their technical proficiency is demonstrated by significant contributions to a SaaS startup, including a 20% customer retention increase, and internal tooling that improved staff participation and satisfaction. Holding a Bachelor's in Computer Science and pursuing an Executive MBA with an AI specialization, they combine strong educational foundations with practical expertise in JavaScript frameworks, API integrations, and developing scalable, performance-optimized features. Strategic projects like the AI-powered skill assessment app illustrate their ability to leverage cutting-edge technologies to deliver impactful solutions.
JavaScript
TypeScript
Express
WebRTC
GCP
Experienced Software Engineer with over 14 years of commercial development experience. Strong expertise
in object-oriented programming, full-stack development, and cloud architecture. Proven leadership in
managing both small and large engineering teams. Committed to delivering high-quality, scalable, and
efficient software solutions across diverse platforms.
Python
OpenAI
RAG
Azure ML
- Senior AI/ML engineer with hands-on experience in GenAI platforms, LLM orchestration, and RAG pipelines;
- Skilled in Python and C# for backend services, chatbot architecture, and AI integration pipelines;
- Built and deployed RAG systems using Azure OpenAI, AI Search, and LangChain;
- Developed Whisper-based transcription pipelines with speaker diarization for business meeting summarization;
- Integrated OpenAI models and multimodal embeddings into workflow automation tools like Jira and Trello;
- Experience in distributed processing with Celery, RabbitMQ, and Redis for asynchronous task execution;
- Deployed scalable AI services in Azure and AWS environments, using Kubernetes, Helm, and Azure DevOps;
- Built real-time event processing and notification systems using Kafka and Apache Camel;
-Designed APIs and backend services for customer support chatbots, voice platforms, and CRM integration;
- Applied prompt engineering, testing (xUnit, pytest), and CI/CD automation across multiple AI initiatives.
Angular
React
MongoDB
AWS
TypeScript
- Experienced full-stack developer with 13 years of experience in software development
- 6+ years in top-level and lead positions.
- Proficient in organizing work, delegating tasks, and leading by example to accomplish team goals.
- Adept in problem-solving, managing project progress, and communicating progress to stakeholders.
-Skilled in coaching and motivating team members to improve their skills and reach their full potential.
-Well-versed in Angular, Angular.js, Angular Material, React, Bootstrap, Node.js, Express, Nest.js, Loopback, MySQL, MongoDB, GraphQL, AWS, AWS S3, AWS Amplify, Electron, Ionic Framework, Flutter, and React Native.
Node.js
React
AWS
GCP
- 5+ years in web and mobile development (Node.js, NestJS, Next.js, React);
- AWS and GCP clouds, including Serverless Framework for serverless app deployment;
- PostgreSQL, MongoDB, Docker, and microservice-based architecture;
- Delivered real-time features using WebSockets for game logic and session state, REST and GraphQL APIs with Express.js and NestJS;
- Experience with billing, auth, and dashboard modules for SaaS, fitness, and e-commerce platforms. Integrated Stripe and Google/Auth for billing and authentication;
- Applied CI/CD, unit testing, and agile workflows across all projects
Quadient Inspire
I am a Quadient developer looking for job in Netherlands. I have 9 years of relevant exp and immediate joiner
PHP 5yr.
Node.js 5yr.
MySQL 5yr.
JavaScript 5yr.
PostgreSQL
Software Engineer with 5+ years of backend development expertise, focusing on API construction, microservices management, and database performance optimization. Proficient in PHP, Node.js, NestJS, JavaScript, TypeScript, MySQL, and PostgreSQL. Holds a Bachelor degree in Science and has worked on enhancing Shopify web applications and designing scalable backend infrastructures. Known for optimizing MySQL queries to increase performance and improve server stability under high load conditions, resulting in more efficient and maintainable systems.
JavaScript 5yr.
React 5yr.
Node.js 5yr.
Python 5yr.
TypeScript 3yr.
Lead Full Stack Developer with 5+ years of experience specializing in developing scalable web applications and architecting cloud-native solutions. Extensive experience with a wide range of technologies like JavaScript (ES6+), TypeScript, Python, React.js, Node.js, AWS, and DevOps tools including Docker and Kubernetes. Proven track record in leading teams, improving system performance, and integrating advanced security measures. Holds a strong background in Computer Science with a high GPA and certifications in AWS and Google Cloud. Recognized for contributions to the tech community and excellence in optimizing real-time systems.
JavaScript 6yr.
React 6yr.
Go
Node.js
React Native
A seasoned Full Stack Developer brings over six years of experience, specialized in JavaScript, Golang, and React Native, with profound knowledge of modern frameworks like NextJS and NestJS. Proven track record in leading projects from inception to launch, showcased through success in diverse domains such as Legal Tech, AgriTech, and Health. Demonstrates expertise in writing efficient, optimized code, backed by the ability to guide design efforts and manage installations for on-time product rollouts. Familiar with CI-CD pipelines, evident from setting up CircleCI, and skilled in complex technology ecosystems, including Microservices, Kubernetes, Docker, and AWS. Adept at full lifecycle software development practices, integrating various technologies with a focus on robust, scalable web and server solutions.
.NET
- Full-stack software developer with 15 years of experience
- Expert in C#, asp.net, asp.net MVC, .net core, native JS, Jquery, Angular 1 and 2+ generation, and other technologies in the web development stack.
- I have experience in C\C++, WinApi, COM, MFC and other technology stacks and I can work with the intersection of these technologies
- My experience includes team and technical management, mentoring, and project management for new teams
- Industries: Logistics and transportation, business intelligence, insurance and reinsurance, healthcare, government, information technology and services, professional services, computer software.
- Upper-intermediate English
HTML
CSS
JavaScript
Node.js
MongoDB
Software engineer with practical experience in full-stack web development, encompassing HTML, CSS, JavaScript, Node.js, and MongoDB. Proven track record with internships at CodeCraft Solutions and Nestsoft Technologies, demonstrating strong initiative, self-motivation, and real-world project management. Robust educational foundation with a Bachelor's in Computer Applications plus a specialization in Cyber Security. Developed a Master Study Portal project, showcasing skills in front-end and back-end development, RESTful API integration, and database management using Mongoose. Competent in version control with Git, and proficient with modern development tools such as GitHub and VS Code. Technical skill set further includes Bootstrap, Express.js, and REST API development.
Elixir Phoenix 5yr.
PostgreSQL 5yr.
Ruby on Rails 2yr.
Neo4j 2yr.
React
An adept Senior Software Engineer with a strong background in Elixir/Phoenix, robust API development, and systems scalability. Engineered the 'Wukong API Proxy' to streamline deployment timelines at Mindvalley, resulting in significant reduction of developer wait times. Skillfully managed Robu Sdn Bhd’s software team, developing its B2B2C platform and ensuring efficient cloud-based deployments. At Fave, excelled in site reliability while transitioning infrastructure from AWS to GCP and enhanced web app performances via Elixir optimizations. With a Bachelor's in IT from Universiti Teknologi Petronas, the candidate demonstrates a solid grasp of software development. Emphasizes AI-assisted workflows, mastering languages like Ruby on Rails, Elm/React, and Rust, and diversifies with a foundational understanding of cryptography and blockchain technologies.
PHP 11yr.
Symfony 11yr.
PostgreSQL
MongoDB
AWS
Expert with PHP, Symfony, Relational and No-SQL databases. Hands on AWS, Gitlab Ci/CD
MS SQL Server Management Studio
Unreal Engine
Linea
Azure VM
Seasoned Head of Engineering with 8+ years of experience in driving technical strategy and leading multidisciplinary development teams. Expertise in AI, blockchain, and full-stack custom software solutions including MERN stack, PHP, and MySQL. Proven track record at Macromodule Technologies, shaping engineering culture with agile principles and maintaining focus on delivering business-aligned, future-ready software products. Holds a Bachelor of Science in Computer Science and has previously elevated backend systems at Dtech Systems and spearheaded full-stack projects at ArhamSoft. Known for integrating emerging technologies and establishing engineering KPIs that foster continuous improvement and technical excellence.
$30/hr
$5000/month
$5000/month
React
Vue.js
Angular
Next.js
Nuxt
Organized, collaborative and highly skilled full stack & blockchain developer with
8+ years of professional experience in dynamic and deadline-driven work
environments. Self-motivated and self-taught professional who always trends to
challenge difficult problems no one dares to try.
The following skills can cover your project?
- Blockchain (Solidity, Web3.js, Ethers.js)
- JS frontend frameworks (React, Vue, Angular, Next, Nuxt, Gatsby)
- Backend skills (Laravel, Express, Django, .NET)
- Other (GraphQL, Shopify, AWS, Firebase, Google APIs, Typescript)
If so, your project is already 99.99% done. The only thing left is to hire me and
wait for the perfect result drinking coffee ~_~
React 4yr.
Redux 4yr.
RESTful API 4yr.
TypeScript 4yr.
Vue.js 2yr.
- Versatile Frontend Developer with 4 years of experience in React, React Native, and Vue.js.
- Strong track record of working on various projects and delivering high-quality web and mobile applications.
- Proficient in JavaScript/TypeScript, React, Redux, Redux Toolkit, Axios, and Vue.
- Experienced in mentoring and teaching, with extensive teaching experience.
- Skilled in Agile methodologies, Git, REST APIs, and MongoDB.
- Familiar with Docker, AWS, Firebase, and Azure Devops.
- Proficient in frontend development frameworks and libraries such as Material-UI, Antd, Tailwind, and Bootstrap.
Python 5yr.
JavaScript 5yr.
Java 2yr.
TypeScript
SQL
A highly proficient Full-Stack Developer with over 7 years of experience, specializing in AI and NLP applications alongside web development. Adept at optimizing large language models, designing intelligent systems, and developing full-scale software solutions. The engineer's technical skill set encompasses Python, JavaScript, TypeScript, Java, C++, and SQL, with mastery in AI & NLP tools such as Hugging Face and TensorFlow. Their proficiency extends to full-stack development with a focus on MERN stack and Vue.js, demonstrated by a history of delivering high-performance, responsive e-commerce platforms, and proprietary CMS interfaces. With a Bachelor's degree in Computer Science and a strong background in DevOps practices, cloud platforms, and deployment technologies, the candidate has a proven track record of enhancing backend performance and streamlining deployment pipelines, positioning them as an asset for technically demanding roles.
PHP 6yr.
MySQL 5yr.
Laravel 4yr.
React 2yr.
Software engineer with extensive experience in full-stack development, focusing on back-end technologies. Expertise in PHP, Laravel, MySQL, Redis, and Vue.js, with a background in computer engineering. Proficient in solving workflow issues through system design, exemplified by creating a generator tool that enhanced efficiency by a significant margin. Skilled in optimizing database queries and implementing TDD, familiar with Docker and Stripe integrations. Proven track record of improving team performance with task automation and has contributed to open source projects. Holds a strong commitment to continuous learning and problem-solving in high-traffic environments.
Solidity
- 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.
Java
Keycloak
- 15 years in the software development industry as a Java Engineer
- 6+ years of experience with Keycloak, utilizing Keycloak for permission and role/group-based authorization with decentralized user access management.
- Adept at integrating Keycloak with external user sources such as LDAP and databases, and implementing custom sync mappers for groups.
- Proficient in designing and implementing architectural solutions of web-based applications.
- Team leading, organization of development process experience.
- Experience with Java, and JS (SpringBoot, ReactJs).
- Experience with different DB engines, and SQL performance optimization.
- Web app security. Authentication & Authorization.
- DevOps (Docker, K8s, Jenkins)
- AWS Cloud
- Upper-Intermediate English
SDLC 3yr.
Node.js 3yr.
JavaScript 3yr.
SQL 3yr.
NoSQL 3yr.
Versatile software engineer with a Bachelor's degree in Computer Engineering and Technology eager for defense from United Methodist University in Mozambique. Showing 3 years of real-world experience with expertise in software development and technical support. Proficient in contemporary web and mobile development, this engineer has successfully built and maintained applications using Node.js, JavaScript, and optimized SQL and NoSQL databases. Technical acumen extends to mobile app creation using React Native and Ionic, as well as comprehensive data analysis utilizing Power BI. Recognized for contributing to collaborative product design and exhibiting strong problem-solving skills. Skilled in an array of programming languages and tools including Python, JavaScript, C++, Git, and more; this candidate stands out for their dynamic approach and adaptability to new technologies, ready to bring value through strong software development practices.
Python 3yr.
FastAPI
Generative AI
SQL
MongoDB
Software engineer with a strong foundation in computer engineering and practical experience in developing scalable applications. Showcases expertise in Python, Flask, FastAPI, and an array of frameworks including Docker and Celery. Proven track record in optimizing data retrieval and processing, exemplified by a 50% performance increase and reduced RAM consumption at Crest Data. Innovatively implemented AI solutions, such as the Netskope AI plugin with Amazon Bedrock, and contributed to machine learning projects during an internship. Holds a solid educational background with a Bachelor's degree in Computer Engineering, boasting a high CGPA of 8.6. The engineer's work through hackathons and personal projects, geared towards automating compliance and transforming flight booking datasets using LLMs, further distinguish their profile as both skilled and innovative in the field of software engineering.
Java
Python
React
Node.js
AWS
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.
HTML
CSS
JavaScript
PHP
Bootstrap 3
A dynamic Full Stack Developer and Video Editor with over 2 years of experience in web development and video editing. Expertise in creating responsive websites and fine-tuning video content utilizing an array of technologies including HTML, CSS, JavaScript, PHP, and Python. Proven ability to manage e-commerce projects like 360cartmall.com, showcasing capabilities in UI/UX and back-end development. Agile in developing solutions with modern frameworks and tools such as React, Visual Studio, and XAMPP. Holds a Bachelor’s in Software Engineering, underpinning a solid technical foundation. Adept at translating complex requirements into user-centric designs and functionalities, reflecting a strong background in SDLC and software development best practices.
Java
C/C++/C#
Python
JavaScript
SQL
A proactive software engineer with a specialty in backend development and competitive programming. Proficient in Java, C++, Python, JavaScript, SQL, and skilled in using backend technologies such as Node.js, FastAPI, Flask, and Django, with basic knowledge in Spring Boot. Extensive practice with databases like PostgreSQL, MySQL, and MongoDB and tools such as Docker, Git, and Postman. Exhibits a strong foundation in computer science education with B.Tech majoring in AI and Data Science. Demonstrates experience in RESTful API design, MVC architecture, and unit testing, having applied these in practical projects like SheRide cab app and Dijkstra & A* Pathfinding Visualizer. Acknowledged for technical prowess by ranking Top 10 in the Smart India Hackathon 2024 and reaching the finals in SUSTAIN-A-THON 2024. Holds a solid grasp of software engineering principles, evidence by hands-on project experience and achievements in the field.
NestJS
React Native
React
Experienced full-stack developer with a strong background in scalable architecture design, cloud infrastructure, and modern web and mobile technologies. Proficient in building distributed systems using React Native, React, Node.js, and NestJS. Skilled in managing containerized deployments, service orchestration, and performance optimization across microservice-based environments. Solid understanding of CI/CD pipelines, monitoring, and cloud platforms like DigitalOcean.
FDD 4yr.
React
Python
Node.js
Full-Stack Web Developer with over four years of experience, specializing in the MERN Stack and Python Django. Proven expertise in building scalable, secure web applications and teaching full-stack development principles. Experienced in both frontend and backend development, as well as cross-platform application development. Technical skills include MongoDB, Express, React, Node.js, MySQL, and AWS services. Proficient in SDLC, REST API design, and software development best practices, driving efficiency and performance improvements in web applications. Strong background in delivering in-depth training programs for aspiring software developers, contributing to their career success.