Hire Vetted Web Application Engineers at Upstaff - Page 12

• Full Stack Developer with hands-on expertise in MERN stack, FastAPI, and scalable backend API design, delivering 10+ real-time APIs and integrating AI-driven Gemini and OpenAI APIs.
• Proficient in React, Redux, Tailwind CSS, Node.js, Express.js, PostgreSQL, MongoDB, and Docker, optimizing UI performance by 25% and managing complex database operations.
• Experienced in Stripe payment integration, Docker containerization, CI/CD pipelines, and cloud deployment, ensuring secure, maintainable, and production-ready software.
• Strong foundation in Computer Science with a Bachelor of Engineering degree, applying best practices in software development lifecycle, data security, and agile methodologies.
• Demonstrated success in building intelligent features like LLM-based document summarization and dynamic presentation generation, enhancing product capabilities and user experience.

• Over 5 years of experience in full-stack development and technical leadership, specializing in backend API design and financial infrastructure integration.
• Proficient in Python, Flask, SQLAlchemy, JavaScript frameworks (React Native, Vue.js), Kotlin, and multiple SQL databases, with strong expertise in REST & SOAP API development and testing (pytest).
• Led fastest Mastercard integration in Latin America, architected systems for virtual/physical card issuance, antifraud, referrals, and P2P/external wire transfers.
• Experienced in cloud deployment (AWS, Heroku), server management (nginx, IIS), and CI/CD practices using Git, enhancing system reliability and automation.
• Academic background in Mechatronics Engineering and Data Science & AI, awarded for academic excellence, combining engineering principles with software development best practices.

• Over 5 years of experience in full-stack development and technical leadership, specializing in backend API design and financial infrastructure integration.
• Proficient in Python, Flask, SQLAlchemy, JavaScript frameworks (React Native, Vue.js), Kotlin, and multiple SQL databases, with strong expertise in REST & SOAP API development and testing (pytest).
• Led the fastest Mastercard integration in Latin America, architected systems for virtual/physical card issuance, antifraud, referrals, and P2P/external wire transfers.
• Skilled in cloud platforms (AWS, Heroku), server management (nginx, IIS), and version control (Git), with experience building scalable, secure financial and educational web applications.
• Holds a Mechatronics Engineering degree and completed advanced coursework in Data Science and AI, awarded for academic excellence, demonstrating strong analytical and problem-solving capabilities.

• Back-end developer with 7 years of experience specializing in Python frameworks including Django, FastAPI, and Reflex, delivering scalable web applications and AI-driven SaaS platforms.
• Proficient in designing and maintaining complex backend architectures using PostgreSQL (pgvector), Redis, Kafka, and AWS cloud services (Lambda, ECS, S3, Cognito), ensuring high performance and reliability.
• Led development of AI-powered lead intelligence and IoT-integrated fleet electrification systems, implementing advanced workflows with OpenAI API, GraphQL, and asynchronous task management.
• Skilled in full SDLC: architecture design, database schema optimization, API development, testing (pytest, Selenium), CI/CD, and cloud infrastructure management with Terraform and Docker.
• Holds Bachelor’s and Master’s degrees in Computer Science, with strong expertise in software engineering principles, multi-tenant SaaS systems, and integration of third-party APIs for enterprise solutions.

• 7+ years of expertise in frontend and mobile development with a strong command of ReactJS, React Native, and TypeScript, delivering scalable cross-platform applications.
• Proven leadership in architecting solutions, leading React/React Native teams, and driving technical decisions aligned with product and design goals.
• Hands-on experience with modern web and mobile technologies, including Next.js, Redux, REST API, GraphQL, and native Android/iOS modules.
• Skilled in CI/CD pipelines, code quality tools (Eslint, Prettier, SonarQube), and testing frameworks (Jest, Detox, Playwright), ensuring robust software delivery.
• Master’s degree in engineering from a technical university, with a solid foundation in software development lifecycle, Agile methodologies, and responsive, accessible UI design.

• Senior Software Engineer with 8+ years of experience in fintech, e-commerce, SaaS, and healthcare, specializing in scalable backend and frontend solutions using Node.js, Python (Django), React.js, and AI frameworks like LangChain.
• Proven expertise in designing high-performance REST APIs, secure AWS Cognito SSO integrations, and optimizing system efficiency by up to 40% through caching, indexing, and query optimization.
• Strong background in cloud services (AWS Lambda, Cognito), database management (PostgreSQL, MongoDB, Redis), and modern DevOps practices including Azure DevOps and Docker.
• Experienced in AI-driven feature integration, multi-regional third-party service orchestration, and mentoring teams to deliver business-critical systems in agile, distributed environments.
• Holds a B.Sc. in Computer Engineering, with advanced certifications in ReactJS and NodeJS, and fluency in multiple programming paradigms and secure software design principles.

Senior Full-Stack Engineer with 17+ years of experience in versatile enterprise-grade projects for large service companies (Ciklum).

SOLID principles, OOP, and component-based design in cloud environments, CI/CD pipelines, and performant user interfaces used by large-scale applications:

• Back-End: Node.js, Next.js, PHP;
• DB: SQL (relational MySQL and PostgreSQL) and NoSQL;
• Front-end: JS/Typescript, React, Angular, Vue.js (pet); TanStack Query/Router, performance optimization;
• Cloud deployments on Azure, Vercel, and Netlify, CI/CD pipelines.

• 9+ years of experience in full-stack roles with JS and TypeScript (Node.js, NestJS, React, React Native).
• Israeli fintech, telecom, and gambling solutions, including high-performance systems handling 10,000+ daily transactions, integrating multiple payment providers, including banking APIs and cryptocurrency.
• Holds a Bachelor’s degree in Theoretical and Nuclear Physics, combining analytical rigor with advanced skills in AWS, Docker, GraphQL, SQL/NoSQL databases, and UI frameworks like Ant Design and MUI.
• Background in software engineering principles, OOP & functional programming, and modern SDLC practices, including Agile, CI/CD, and test automation with Cypress and Jest.

Backend Engineer, 8+ years of hands-on experience architecting production-grade Python systems — primarily with FastAPI, microservices, and cloud-native infrastructure. Specializes in building reliable APIs (REST + GraphQL via AWS AppSync), high-performance data layers, real-time features (WebSocket), and secure, observable platforms that power AI-driven SaaS, FinTech/loan management, personalized education, and meditation applications.

• Robust, versioned APIs with pagination, filtering, bulk operations, and real-time capabilities for enterprise standards.
• Security models using JWT, OAuth2, Cognito/Firebase Auth, and OWASP plus secrets management in AWS.
• PostgreSQL/SQLAlchemy setups with strict validation, indexing, query tuning, migrations (Alembic), and entity versioning (Continuum).
• Integrations & background jobs (Celery/AWS Lambda), idempotent processing, retries, and Stripe/Telegram/webhook handling.
• End-to-end CI/CD with GitHub Actions, Docker, Kubernetes, ECS, ArgoCD for zero-downtime rollouts and automated testing.
• Full observability stacks (Prometheus + Grafana, CloudWatch) with alerts, dashboards, and runbooks for proactive monitoring.
• Comprehensive operational documentation, team training, and code reviews as a Team Lead managing up to 8 engineers.

Optimized high-load endpoints, reduced latency through caching/profiling, enforced business rules at the DB level, and led refactorings and migrations. Passionate about clean architecture, maintainability, and turning complex business needs into elegant, scalable solutions.

• Full-stack engineer with 6+ years of expertise in TypeScript, React, React Native, Node.js, and .NET Core, delivering scalable B2B and healthcare applications with 40% latency reduction through query optimization.
• Proficient in integrating analytics SDKs (Mixpanel, Firebase, AdMob) and implementing secure JWT authentication and role-based access control in cross-platform mobile apps.
• Experienced in CI/CD pipelines using GitLab CI/CD, automated testing (Jest, Cypress), and cloud deployments on AWS and Docker, enabling rapid iterative releases and A/B testing.
• Strong background in SQL databases (PostgreSQL, MySQL, SQL Server) with advanced query optimization for analytics-driven growth metrics.
• Holds an MSc in Computer Science and IT, skilled in modular architecture, feature flags, and AI-augmented development to accelerate coding and improve UX flows.

• Full-stack JavaScript developer with 3+ years of experience specializing in Angular (v2+), NestJS, and TypeScript for scalable, high-performance web applications.
• Proficient in integrating REST and GraphQL APIs, implementing OAuth, SMS OTP, and magic link authentication workflows using Supabase and JWT.
• Skilled in advanced state management with NgRx, reactive forms with RxJS, and custom UI development using Angular Material, PrimeNG, Taiga UI, and Tailwind CSS.
• Experienced in low-code platforms (Appian), CI/CD pipelines, automated testing, and performance optimization leveraging Google Lighthouse and Core Web Vitals.
• Strong background in data normalization, modular architecture, microservices, and secure coding practices including RBAC, bcrypt encryption, and audit trails.

• Full Stack Engineer with 6+ years of experience architecting scalable web applications and microservices using Node.js (Express) and Laravel, delivering production-grade solutions for UK startups.
• Expertise in AI-powered automation workflows (n8n, LLM APIs, MCP) and event-driven backends, achieving 50% reduction in document processing time and enhanced cross-team visibility.
• Proficient in Python scripting for automation, and skilled in databases including MySQL, PostgreSQL, MongoDB, and Neo4j, with hands-on AWS and Docker deployment experience.
• Strong advocate of TDD, Clean Architecture, OOP design patterns, and modular monoliths, improving code reliability by 60% and system maintainability.
• Holds a Master’s degree in Software Engineering and fluent in Arabic, French, and English, with proven leadership in remote, distributed agile teams.

I am a Senior Full Stack Developer with over 10 years of extensive and deep experience  designing, developing, and deploying high-performance web applications and enterprise-level platforms. My expertise spans the entire technology stack, allowing me to deliver robust, scalable, and maintainable solutions from concept to production.

• Full-Stack Engineer with 10 years of experience building and scaling web and SaaS products across fintech, edtech, martech, crypto, energy, and AI-driven domains.
• Skilled in JavaScript, TypeScript, and Python, with hands-on experience in frontend development using React, Next.js, and Vue.js, and backend development with Node.js, NestJS, Express, and Python-based frameworks.
• Designed and implemented system architectures for complex platforms, including distributed systems, microservices, real-time applications, and API-driven products with PostgreSQL, MongoDB, Redis, ClickHouse, and Elasticsearch.
• Led full-cycle development of high-load platforms such as crypto trading systems, communication automation tools, educational video platforms, and SaaS products, from requirements and architecture to production launch and scaling.
• Integrated AI and machine learning components into production systems using OpenAI APIs, LangChain, FAISS, PyTorch, and other AI tooling for personalization, automation, and content generation.
• Built and maintained infrastructure using Docker, Kubernetes, Terraform, and CI/CD pipelines, working extensively with AWS and Google Cloud environments.
• Experienced in technical leadership, including frontend architecture ownership, mentoring engineers, hiring, and organizing engineering teams across multiple projects.