API Developers For Hire - Page 10
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Hire seefattechnologi
seefattechnologi seefattechnologi
$20 USD / hour
TOP-RATED⭐HIGHLY RECOMMENDED ⭐FULLSTACK DEVELOPERIndiaSenior Full-Stack Developer | 12+ Years Experience Building Scalable Web, Mobile , Claude AI & Cloud Solutions AI + Automation/N8N SaaS products API integrations Data/Analytics Cybersecurity Cloud infrastructure AI agents/chatbots Go High Level I am an INNOVATIVE Senior Full-Stack Developer with 12+ years of...Senior Full-Stack Developer | 12+ Years Experience Building Scalable Web, Mobile , Claude AI & Cloud Solutions AI + Automation/N8N SaaS products API integrations Data/Analytics Cybersecurity Cloud infrastructure AI agents/chatbots Go High Level I am an INNOVATIVE Senior Full-Stack Developer with 12+ years of experience delivering secure, high-performance, and scalable applications across web, mobile, and cloud platforms. I specialize in turning complex ideas into clean, maintainable, and business-driven solutions that scale efficiently. Core Expertise Frontend Development React.js, Next.js, Vue.js, TypeScript, JavaScript (ES6+), Redux Tailwind CSS, Bootstrap, SASS, Material UI, Chakra UI Pixel-perfect, responsive, high-performance UI/UX 3D, Backend Development Node.js Ecosystem Node.js, Express.js, NestJS, WebSockets REST APIs, GraphQL, Microservices ERPNext Inventory Three.js AOSP DVB Live TV App/IPTV Advanced PHP Ecosystem Laravel, Symfony, CodeIgniter, Core PHP (OOP/MVC) Laravel Stack Livewire, Inertia.js Sanctum & Passport (Auth) Horizon (queues) Nova / Filament (admin panels) Eloquent ORM & optimization Jobs, Events, Broadcasting Advanced PHP Practices PHP 8+ (JIT, Enums, Typed Properties) SOLID principles & design patterns PSR standards (PSR-4, PSR-12) High-performance apps (caching, scaling) Database & Architecture MySQL, PostgreSQL, MongoDB, MSSQL, DynamoDB Optimized queries, indexing & scalable schema design Cloud & DevOps (AWS Expert) AWS Lambda, API Gateway, ECS, EC2, S3, RDS, DynamoDB CloudFormation, Step Functions, SQS, SNS, EventBridge DevOps Tools: Docker, CI/CD Pipelines, Git, Vercel, Netlify, Postman, Swagger Mobile & Cross-Platform React Native, Xamarin, NativeScript Android (Kotlin) & iOS Java,UX/UI design Excel VBA, Excel Macros, Xero Bookkeeping, MYOB Additional Strengths MERN / MEAN Stack Development GraphQL & REST API Architecture Firebase & Real-time Apps MVP Development & Rapid Prototyping UI/UX (conversion-focused) Azure/SharePoint Agile Development & Team Leadership Data, AI & Analytics Power BI Dashboards Python (AI & Machine Learning) Trading Systems (NinjaTrader) 3D Rendering 3ds Max 3D Modelling 3D Animation Digital & Performance SEO, PPC, CRO Performance Optimization & Scalability less -
Hire alfatrade2
Senior Backend Developer with 10 years of hands-on experience building scalable, production-ready systems. I specialize in Java 21, Spring Boot 3, and microservices architecture. What I deliver: - REST API development and integration - Microservices architecture design and implementation - Database design and...Senior Backend Developer with 10 years of hands-on experience building scalable, production-ready systems. I specialize in Java 21, Spring Boot 3, and microservices architecture. What I deliver: - REST API development and integration - Microservices architecture design and implementation - Database design and optimization (PostgreSQL, MySQL) - Bug fixing and code refactoring - Docker containerization and deployment - Message-driven systems with Apache Kafka My current stack: Java 21, Spring Boot 3.3, PostgreSQL, Kafka, Redis, Docker, Keycloak, Gradle/Maven Why work with me: - I build and maintain a 30-microservice e-commerce platform from scratch - Clean code, clear communication, on-time delivery - Available for both small tasks and long-term projects - Fast response time — usually within 1-2 hours I focus on writing maintainable, well-tested code that works in production. Let's discuss your project — I'm ready to start immediately. less -
Hire angelRosario11
Soy Desarrollador Backend Senior especializado en Java y en el desarrollo de soluciones empresariales escalables, seguras y de alto rendimiento. Cuento con experiencia participando en proyectos para el sector financiero, asegurador y de tecnología, donde he colaborado tanto como desarrollador senior como líder...Soy Desarrollador Backend Senior especializado en Java y en el desarrollo de soluciones empresariales escalables, seguras y de alto rendimiento. Cuento con experiencia participando en proyectos para el sector financiero, asegurador y de tecnología, donde he colaborado tanto como desarrollador senior como líder técnico. Mis principales fortalezas son el diseño y desarrollo de APIs REST, microservicios y sistemas distribuidos utilizando Java (8, 17 y 21), Spring Boot, Apache Camel, Kafka y Maven. También tengo experiencia en integración de sistemas, procesamiento de mensajes, automatización de procesos y optimización de aplicaciones existentes. Trabajo siguiendo buenas prácticas de desarrollo como Clean Code, SOLID, pruebas unitarias con JUnit y Mockito, revisión de código, control de versiones con Git e integración continua. Además, tengo experiencia resolviendo problemas complejos de rendimiento, migraciones entre versiones de Java y Spring Boot, manejo de errores en arquitecturas de microservicios y configuración de herramientas de calidad de código. Entre los servicios que ofrezco se encuentran: • Desarrollo de APIs REST y microservicios. • Desarrollo de aplicaciones backend con Java y Spring Boot. • Integración entre sistemas mediante Apache Camel y Kafka. • Corrección de errores y mantenimiento de aplicaciones Java. • Optimización y refactorización de código. • Migración de proyectos a versiones más recientes de Java y Spring Boot. • Desarrollo de pruebas unitarias y de integración. • Consultoría técnica y apoyo en arquitectura backend. Me interesa colaborar en proyectos que representen retos técnicos y donde pueda aportar soluciones de calidad, priorizando siempre un código limpio, mantenible y escalable. Disfruto resolver problemas complejos, aprender nuevas tecnologías y construir software que genere valor real para los clientes. Mi compromiso es ofrecer comunicación clara, entregas puntuales y soluciones confiables que cumplan con los objetivos del proyecto. less -
Hire solat5
𝗛𝗜𝗣𝗔𝗔-𝗰𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝘁 𝗵𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 𝗦𝗮𝗮𝗦, 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗘𝗠𝗥, 𝗮𝗻𝗱 𝗔𝗜 𝗮𝗴𝗲𝗻𝘁𝘀 — 𝟭𝟭 𝘆𝗲𝗮𝗿𝘀 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗰𝗹𝗶𝗻𝗶𝗰𝗮𝗹 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 𝘁𝗵𝗮𝘁 𝗿𝘂𝗻 𝗶𝗻 𝗿𝗲𝗮𝗹 𝗨𝗦 𝗰𝗹𝗶𝗻𝗶𝗰𝘀. I'm not a generalist who "also does healthcare." I've spent 11+ years as Lead Developer on CAMDIAN, a multi-tenant behavioral health EMR in daily clinical use across multiple US clinics —...𝗛𝗜𝗣𝗔𝗔-𝗰𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝘁 𝗵𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 𝗦𝗮𝗮𝗦, 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗘𝗠𝗥, 𝗮𝗻𝗱 𝗔𝗜 𝗮𝗴𝗲𝗻𝘁𝘀 — 𝟭𝟭 𝘆𝗲𝗮𝗿𝘀 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗰𝗹𝗶𝗻𝗶𝗰𝗮𝗹 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 𝘁𝗵𝗮𝘁 𝗿𝘂𝗻 𝗶𝗻 𝗿𝗲𝗮𝗹 𝗨𝗦 𝗰𝗹𝗶𝗻𝗶𝗰𝘀. I'm not a generalist who "also does healthcare." I've spent 11+ years as Lead Developer on CAMDIAN, a multi-tenant behavioral health EMR in daily clinical use across multiple US clinics — HIPAA-audited, billing-integrated, actively maintained. I bring that production discipline to every project. 𝗪𝗵𝗮𝘁 𝗜 𝗕𝘂𝗶𝗹𝗱: ✅ 𝗘𝗠𝗥/𝗘𝗛𝗥 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 — Multi-tenant behavioral health, patient portals, clinical dashboards, telemedicine, HIPAA-compliant from day one ✅ 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 𝗦𝗮𝗮𝗦 — Subscription billing, role-based access, BAA-ready infrastructure, audit-traceable code, API-first design ✅ 𝗔𝗜 𝗔𝗴𝗲𝗻𝘁𝘀 & 𝗟𝗟𝗠 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 — Agentic RAG (LangGraph, LangChain, FAISS), voice-to-clinical-notes, workflow automation, custom GPT assistants ✅ 𝗠𝗩𝗣 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 — Production-ready MVPs in 6 weeks for healthcare founders — not throwaway demos ✅ 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 — React, Next.js, Node.js, Laravel, Python, FastAPI with MongoDB, PostgreSQL, MySQL ✅ 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 — RESTful APIs, FHIR/HL7, payment gateways, EMR/practice-management systems 𝗣𝗿𝗼𝘃𝗲𝗻 𝗥𝗲𝘀𝘂𝗹𝘁𝘀: → 𝟭𝟭+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗻 𝗖𝗔𝗠𝗗𝗜𝗔𝗡 — one of the longest continuous EMR engagements on this platform → 𝗕𝘂𝗶𝗹𝘁 𝗦𝗮𝘆𝟮𝗙𝗼𝗿𝗺, my own AI voice-to-clinical-notes SaaS — I've shipped what I sell → Helped founders raise $100K+ seed funding with demo-ready MVPs in 6 weeks → AI agents automating 70% of support queries, reducing workload 40% → 𝗗𝗲𝘀𝗶𝗴𝗻𝗲𝗱 𝟴-𝘀𝗰𝗲𝗻𝗮𝗿𝗶𝗼 𝗛𝗜𝗣𝗔𝗔 𝗿𝗶𝘀𝗸 𝗳𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀 for agentic AI in clinical settings 𝗪𝗵𝘆 𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 𝗕𝘂𝘆𝗲𝗿𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲: Healthcare SaaS has three hidden costs cheap developers can't handle — HIPAA architecture, multi-tenant data isolation, and clinical workflow logic. Getting these wrong means 3–6 months of rework. I get them right the first time. → 2-hour response | Daily updates | Milestone payments | NDA & BAA signed before code | Free discovery call 𝗙𝗔𝗤: Q: Do you sign NDAs and BAAs? A: Yes — NDA before any PHI-related architecture discussion. BAA before any code touches production data. Q: Can you build AI agents, not just chatbots? A: Yes — agentic RAG pipelines, LangGraph orchestration, voice-to-form systems, custom LLM integrations for clinical use. Q: Why is your rate $35 with 11 years experience? A: I'm new to Freelancer.com and building platform reviews. For fixed-scope projects I quote by complexity — typically $3K–$15K per milestone. Rate reflects track record as reviews grow. Q: Typical project timeline? A: MVP in 6 weeks, features 2–4 weeks, audits 2–7 days. On-time delivery: 100%. Let's validate your architecture before you invest in development — I'll design the right system first, then we build it. less -
Hire libnim3
Senior Backend and AI Systems Engineer specializing in scalable APIs, production infrastructure, and reliable AI-enabled platforms. I help companies design and ship backend systems that perform under real production load. My focus is on reliability, security, performance, and long-term maintainability across...Senior Backend and AI Systems Engineer specializing in scalable APIs, production infrastructure, and reliable AI-enabled platforms. I help companies design and ship backend systems that perform under real production load. My focus is on reliability, security, performance, and long-term maintainability across business-critical services. I build and optimize REST, GraphQL, and gRPC APIs, asynchronous service architectures, and high-throughput data pipelines. I work across Rust, Python, and TypeScript with strong hands-on experience in PostgreSQL, Redis, Docker, cloud deployment, and observability tooling. For enterprise and growth-stage teams, I prioritize clear service boundaries, stable API contracts, disciplined CI/CD, and operational transparency. I design systems with auditability, fault tolerance, and extensibility from day one, so teams can scale without accumulating hidden technical debt. I also deliver AI features where they create measurable business value, including LLM integrations, retrieval pipelines, and agent-assisted workflows. My approach is engineering-first: controlled behavior, traceable outputs, fallback handling, and production-safe architecture. Clients work with me for clear communication, realistic planning, and consistent execution. I take ownership from architecture through deployment and post-launch optimization, and I align technical decisions with business outcomes. If you need a senior engineer who combines backend rigor with practical AI delivery, I am ready to help. less -
Hire Iendrel
I’m a Full Stack Engineer building scalable, high-performance web applications and cloud-native systems using React, Next.js, Node.js, Python, and modern cloud tools like AWS, Docker, and Kubernetes. I specialize in turning ideas into production-ready, scalable products with clean architecture and fast delivery. If...I’m a Full Stack Engineer building scalable, high-performance web applications and cloud-native systems using React, Next.js, Node.js, Python, and modern cloud tools like AWS, Docker, and Kubernetes. I specialize in turning ideas into production-ready, scalable products with clean architecture and fast delivery. If you need a reliable developer who can take full ownership of your project, I can help. Core Skills & Expertise: Programming Languages C/C++/C#, Golang, Rust, PHP, JavaScript, TypeScript, Python, Ruby, Java, Swift, Kotlin Web Development & Mobile & Cloud - Frontend: HTML, CSS, JavaScript, React.js, Next.js - Backend: Node.js, Django, Flask, REST API development, Laravel, Gin, Rocket, .NET - Mobile: Flutter, .NET MAUI, React Native - Cloud Services: AWS, Google Cloud - Data visualization and real-time dashboards - Database & ORM & ODM: PostgreSQL, MySQL, MongoDB, Firebase, Redis, Sequelize, Prisma, Mongoose Artificial Intelligence & Machine Learning - Developing, deploying, and maintaining ML models with Python, TensorFlow, PyTorch, scikit-learn - NLP pipelines, computer vision solutions, and AI-powered features - Integrating Large Language Models (LLMs), vector databases, and AI APIs into production systems - MLOps: Model versioning, monitoring, CI/CD automation with MLflow, Docker Software & System Development - API Design & Integration - Microservices Architecture & Containerization - DevOps & Deployment Automation less -
Hire JuLiAnChzDev
Soy Julián Andrés Chilito Galindez, un apasionado por la tecnología y el desarrollo de software con más de 10 años de experiencia en el sector. Desde muy joven, la curiosidad por entender cómo funcionan los sistemas y la programación me llevó a explorar este fascinante mundo. Mi trayectoria comenzó desarrollando...Soy Julián Andrés Chilito Galindez, un apasionado por la tecnología y el desarrollo de software con más de 10 años de experiencia en el sector. Desde muy joven, la curiosidad por entender cómo funcionan los sistemas y la programación me llevó a explorar este fascinante mundo. Mi trayectoria comenzó desarrollando sitios web en HTML y PHP para pequeños negocios, y con el tiempo, adquirí experiencia en el diseño y desarrollo de sistemas más complejos, como ERPs y aplicaciones móviles. A lo largo de los años, he trabajado con tecnologías como Python, Node.js, React, Firebase, AWS, entre muchas otras, siempre buscando soluciones innovadoras y eficientes para las necesidades de mis clientes y empresas. He tenido la oportunidad de liderar equipos de desarrollo, diseñar arquitecturas de software, optimizar procesos de TI y crear productos como software médico SaaS y plataformas educativas. Mi enfoque combina habilidades técnicas con la capacidad de trabajar en equipo y la constante búsqueda de aprendizaje en áreas como inteligencia artificial y DevOps. Hoy, en mi rol en Assertsoft, aplico todo mi conocimiento y experiencia, aportando valor en cada proyecto mientras me mantengo al día con las tendencias más recientes de la industria. Mi misión es seguir creando soluciones que marquen la diferencia y ayudar a las empresas a alcanzar su máximo potencial a través de la tecnología. Conéctate conmigo para colaborar en proyectos apasionantes y compartir conocimientos. less -
Hire klymenkoartur
klymenkoartur klymenkoartur
$20 USD / hour
Senior Website developer ⭐️ SEO ⚡ CMS ✅ WordPressUkraineI am a highly skilled ⭐️ Senior ✅ Fullstack-Stack web developer ⚡ with over 7 years of experience ⭐️ specializing in backend development and cutting-edge web technologies. My expertise ⚡ spans a wide range of frameworks, CMS platforms, and modern development tools, allowing me to create high-performance, scalable, and...I am a highly skilled ⭐️ Senior ✅ Fullstack-Stack web developer ⚡ with over 7 years of experience ⭐️ specializing in backend development and cutting-edge web technologies. My expertise ⚡ spans a wide range of frameworks, CMS platforms, and modern development tools, allowing me to create high-performance, scalable, and visually appealing web solutions. SKILLS: ✅ HTML/CSS; ✅ Bootstrap/Tailwind; ✅ Javascript/Node.js; ✅ CodeIgniter; ✅ Laravel; ✅ Yuii2; ✅ Wordpress/woocommerce; ✅ WebFlow; ✅ OpenCart; ✅ PrestaShop; ✅ Open Graph ✅ Nest.js/Express.js; ✅ MYSQL/MongoDB/PosgreSQL; ✅ Telegram bots; ✅ Python; ✅ Vue/Nuxt.js; ✅ React/Next.js/Gatsby.js; ✅ Django/Flask/aiogram/pyTelegramAPI; ADVANTAGES OF WORKING WITH ME ? ⭐️ Fast and efficient project implementation; ⭐️ Always in touch; ⭐️ Ability to create unique and visually appealing web projects; ⭐️ High quality standards; ⭐️ I use only the latest technologies in website development to make your website beautiful not only visually but also no technically; less -
Hire adrian1a
Adrian is an experienced full-stack engineer specializing in TypeScript, React, and Node.js. He is also a skilled product leader with experience managing multiple projects and businesses. Adrian typically works with Next.js and Node.js for full-stack projects and has extensive experience in building web applications.Adrian is an experienced full-stack engineer specializing in TypeScript, React, and Node.js. He is also a skilled product leader with experience managing multiple projects and businesses. Adrian typically works with Next.js and Node.js for full-stack projects and has extensive experience in building web applications. less -
Hire eliascloud
I am a versatile software engineer with experience building AI-powered applications, full-stack web platforms, and Shopify solutions. I work with modern technologies including Python, Node.js, React, Next.js, TypeScript, PostgreSQL, and cloud platforms such as AWS and GCP. My AI experience includes LLM integrations,...I am a versatile software engineer with experience building AI-powered applications, full-stack web platforms, and Shopify solutions. I work with modern technologies including Python, Node.js, React, Next.js, TypeScript, PostgreSQL, and cloud platforms such as AWS and GCP. My AI experience includes LLM integrations, AI agents, RAG systems, workflow automation, and custom business solutions using OpenAI, Claude, and other AI technologies. On the full-stack side, I develop scalable SaaS applications, APIs, dashboards, and enterprise systems. I also build and customize Shopify stores, apps, themes, and e-commerce automations to help businesses grow online. I focus on clean code, reliable architecture, clear communication, and delivering high-quality results on time. Skills: - AI/ML, LLMs, RAG, AI Agents - Python, Node.js, TypeScript - React, Next.js, NestJS - PostgreSQL, MongoDB, Redis - Shopify Development & App Development - AWS, GCP, Docker - API Development & Integrations - SaaS & Enterprise Applications Let's build something valuable together. less
