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Tamal M.
$50/hr
100% Job Success
$200K+ earned
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I help startups and engineering teams build production-ready AI applications, intelligent agents, and scalable cloud backends. With 20+ years of software engineering experience, I specialize in combining AI Agent frameworks, RAG pipelines, and modern backend architecture to deliver systems that are scalable, observable, and maintainable in real-world environments. My focus is on building AI systems that integrate cleanly into existing infrastructure while remaining cost-efficient, scalable, and easy to operate. I work across the full stack — from AI orchestration and vector search to Kubernetes deployment and modern React/Next.js interfaces. ■ What I can help you build ✔ AI Agents with tool-calling and workflow orchestration ✔ RAG applications using OpenAI + vector databases ✔ AI-powered internal tools and chat interfaces ✔ Golang/Python backend APIs and microservices ✔ Event-driven systems with Kafka, RabbitMQ, or NATS ✔ Cloud-native AI deployments on AWS/GCP/Azure using Kubernetes and IaC ✔ Kubernetes automation, Helm, Terraform, and CI/CD pipelines ✔ Observability using OpenTelemetry, Prometheus, and Grafana ■ AI & LLM Stack: - LangChain ecosystem, LangGraph, LlamaIndex, CrewAI - OpenAI, Anthropic, Ollama, Mistral - AI Agent SDKs, MCP, and multi-agent orchestration - pgvector, Qdrant, Milvus, Pinecone - Prompt engineering and memory/state management - Streaming AI responses and tool-calling systems ■ Backend & Cloud: - Golang, Python, Java, Node.js - FastAPI, Gin, Django, Spring Boot, Express.js - PostgreSQL, Redis, MongoDB, DynamoDB - AWS (EKS/ECS/Lambda), GCP, Azure - Kubernetes, Helm, Terraform, ArgoCD ■ Frontend: - React, Next.js, Tailwind CSS - AI chat interfaces and dashboards - Real-time and streaming UI integration ■ Why clients work with me - Strong system design and architecture background - Production-focused engineering mindset - Experience with observability and scalable deployments - Able to bridge AI experimentation and real-world infrastructure
Tamal M. has worked .
$10/hr
100% Job Success
$9K+ earned
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✅ Full-Stack Software Engineer with 5+ Years of Experience I am an experienced full-stack developer and competitive programmer with expertise in building scalable, high-performance systems and applications. With a strong foundation in programming and problem-solving, I have successfully developed production-level applications that support high-volume transactions. Frontend Expertise ✅ React, Vue, Nuxt.js, Next.js, TypeScript, JavaScript ✅ Tailwind CSS, Material UI, CSS Backend Expertise ✅ Node.js, FastAPI, Django, NestJS, Gin, Fiber ✅ PostgreSQL, MongoDB, MySQL ✅ BaaS platforms such as Supabase, Appwrite ✅ Event streaming and queues like RabbitMQ and Kafka Competitive Programming ✅ Strong foundation in algorithms and data structures ✅ Proficient in Python, JavaScript, and Golang DevOps & Cloud ✅ Docker, Kubernetes, AWS, GCP ✅ gRPC, REST, GraphQL Why Choose Me? ⭐ Clean, structured, and maintainable code ⭐ Excellent communication and fast response times ⭐ Proven ability to deliver on time, with room for iterations ⭐ Strong analytical skills and problem-solving experience ⭐ Passion for exploring new technologies and delivering impactful solutions
Abdulfetah Y. has worked .
Meles Z.
$10/hr
100% Job Success
$9K+ earned
Offers consultations
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I architect and build distributed systems at scale. With 4+ years of experience, I turn complex business requirements into resilient, high-performance microservices using Go—designed for real-world production, not just theory. 💎 Core Expertise 🏗️ System Architecture & Design 🔹 Distributed systems with fault tolerance and high availability 🔹 Microservices decomposition & service mesh (Istio, Linkerd) 🔹 Event-driven architectures (Kafka, RabbitMQ, NATS) 🔹 Domain-Driven Design and API gateway patterns ⚡ Backend Engineering 🔹 Production-grade Go services with clean architecture 🔹 RESTful & gRPC APIs using Protocol Buffers 🔹 Advanced concurrency patterns (goroutines, channels, worker pools) 🗄️ Data & Storage 🔹 PostgreSQL, MySQL, MongoDB performance optimization 🔹 Event sourcing & CQRS 🔹 Distributed caching (Redis, Memcached) ☁️ Cloud-Native & DevOps 🔹 Kubernetes workloads: Deployments, StatefulSets, custom operators 🔹 CI/CD pipelines (GitHub Actions, GitLab CI) 🔹 Optimized multi-stage Docker builds 📊 Observability & Reliability 🔹 Prometheus metrics & Grafana dashboards 🔹 Distributed tracing across microservices 🔹 ELK stack structured logging 🔹 SLA/SLO ownership and reliability engineering 🎯 Impact Delivered 💡 Monolith → 12+ microservices | 70% faster deployments 💡 Distributed caching layer | 60% faster API responses 💡 Real-time pipelines | 100K+ events/sec 💡 Infrastructure optimization | 40% cost reduction 💡 Production systems | 99.9%+ uptime ✨ Why Work With Me? 🔹 Systems-first mindset focused on scale and resilience 🔹 Clean, maintainable, production-ready code 🔹 Deep Go performance profiling and optimization 🔹 Clear communication and predictable delivery 🔹 Comfortable mentoring and leading engineering efforts 📬 Let’s Connect I’m open to both short-term and long-term engagements. Whether you’re building from scratch or scaling an existing platform, I’d be happy to discuss how I can help. Ready to discuss your technical challenges? Send an invite—let's explore how I can accelerate your goals.
$80/hr
100% Job Success
$50K+ earned
Available now
Offers consultations
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I’m a Senior Backend Engineer with extensive experience in designing and developing scalable, high-performance applications. With a strong foundation in Golang, I specialize in backend development, API integrations, and database management while also being well-versed in frontend, mobile, and full-stack development. 🔹 Backend & DevOps Expertise: ✔ Languages & Frameworks: Golang, Rust, Node.js, Python, C, Ruby. ✔ Databases: MySQL, PostgreSQL, SQLite, MongoDB, Aerospike. ✔ Web Servers & Networking: Nginx, Apache, FTP, DNS ✔ Cloud & Deployment: Docker, Kubernetes, CI/CD, Serverless ✔ API Development: RESTful APIs, GraphQL, WebSockets ✔ Performance Optimization & Security 🔹 Frontend & Mobile Development: ✔ Frontend: React, Vue.js, Next.js ✔ Mobile Development: React Native, Flutter ✔ UI/UX Integration: Modern, responsive, and user-friendly designs ✔ Full-Stack Development: Seamless integration of backend and frontend I have built and integrated high-traffic web applications, mobile apps, APIs, and cloud-based solutions across various industries. My experience extends to scaling applications, optimizing performance, and ensuring secure deployments. Whether you need a robust backend, an interactive frontend, a full-stack application, or cloud infrastructure, I bring technical expertise and problem-solving skills to deliver high-quality solutions. Let’s discuss how I can help with your project! 🚀
Ahmed A. has worked .
Hamza A.
$65/hr
100% Job Success
Offers consultations
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I am a Senior Golang Developer specializing in Systems Designing and architecture with a focus on building intuitive and effective 𝗪𝗲𝗯 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 in 𝗚𝗼𝗹𝗮𝗻𝗴, Nodejs, Python, Ruby and React/Vue using best practices and common design patterns. I am a problem solver, architect and have more than 𝟖 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗶𝗻𝗱𝘂𝘀𝘁𝗿𝘆 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲. Experienced in building scalable, parallel and distributed processing systems based on highload lowlatency database systems and throughout my career, I have honed my technical leadership skills and developed a knack for effective communication and engaging presentations. My ability to learn quickly and my expertise working collaboratively across diverse geographical locations set me apart in this fast-paced industry. I have been a valuable contributor in the end-to-end development of various products. I have taken ownership of the entire process, starting with defining system requirements and managing partner dependencies to implementing efficient software, conducting thorough testing, and finally, monitoring performance through metrics, alarms, and dashboards. Technical Skills: - Go, Python, Java, Javascript, Node.js, Tensorflow, Scalable Systems, Keras, NumPy, Serverless Frameworks, Docker, Terraform, Ansible, Kubernetes, Jenkins, Spinnaker, GitOps, DataOps, AWS. GCP, Azure, JAMstack, Temporal, Debezium, GraphQL, MEAN Stack, React, Redux, ES6, Express, MongoDB, Redis, Linux, Etcd, Consul, Kinesis, Redshift, DynamoDB, Spark, Hadoop, Kafka, PostgreSQL, MySQL, ELK, Sass, Webpack, Gulp, Git, Ethereum, Solidity, OpenZeppelin, Flask, Redis, NATS, NSQ, AWS, GCP, Heroku, DigitalOcean, Cloudflare, Twillio, Shopify, VAPI and Django 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: Golang, Go, Node.js Developer, Express.js, RESTful APIs, Real-time applications, Scalable applications, Asynchronous programming, AI Integration, Automations, Node.js frameworks, NPM, Server-side JavaScript, Microservices architecture, TypeScript, Angular CLI, Single Page, GraphQL Schema, Ecto Database Specialist, Microservices Architect, WebSockets Guru, Claude, Progressive Web App (PWA) Artisan, OAuth 2.0 Specialist, Git Version Control Virtuoso, Continuous Integration (CI/CD) Connoisseur, WebAssembly Enthusiast, Progressive Enhancement Prodigy, Responsive Design Authority, Web Accessibility Advocate, Elixir Testing Aficionado, Virtuoso DevOps, Agile Development Prodigy, Scrum Master, Kanban Maestro, Code Review Guru, Technical Documentation Virtuoso, Open Source Contributor, Code Optimization Maestro, Performance Tuning Specialist, DevSecOps Advocate, API Gateway Expertise, Serverless Computing Guru, Lambda Functions Virtuoso, Infrastructure as Code (IaC) Specialist, GraphQL Federation Connoisseur, Web3.0 Enthusiast, Decentralized Applications (DApps) Authority, Solidity Smart Contracts Maestro, Tokenomics Expert, DeFi (Decentralized Finance) Aficionado, Cybersecurity Guru, Chatbot Development, Reinforcement Learning Aficionado, IoT (Internet of Things) Specialist, Edge Computing Enthusiast, Quantum Computing Guru.
Hamza A. has worked .
CapregSoft (Private) Limited
Associated with
CapregSoft (Private) Limited
Amit B.
$55/hr
100% Job Success
Available now
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⭐️ 8+ Years in Software Engineering (Golang, Python) ⭐️ Hands-on LLM/ChatGPT/RAG product development and large-scale ML hosting on AWS ECS/CDK ⭐️ Backend for global platforms serving 3M+ users/day ⭐️ CKAD, AWS Solutions Architect – Associate & AWS DevOps Engineer – Professional certified ⭐️ Strong background in microservices, cloud-native systems & real-time data pipelines ⭐️ Slack-JIRA AI assistant, Foodpanda homescreen infra, Amazon PDP localization pipeline ⭐️ High-impact Upwork client results with consistent 5.0 ratings 🧑‍💻 Back-End Engineering (Golang, Python) ☑️ REST, gRPC, GraphQL API design ☑️ Go frameworks: Gin, Echo, Revel, Martini, Gorilla ☑️ ORM: Gorm, go-pg | Testing: GoMega, Ginkgo, go-mock ☑️ Concurrency: goroutines, channels, worker pools ☑️ Dependency Injection: go-wire ☑️ Structured logging: zap, zerolog, logrus ☑️ GolangCI-lint contributor – deep attention to clean code and linting 🧑‍💻 Cloud & Infrastructure ☑️ AWS: Lambda, ECS, RDS, DynamoDB, S3, API Gateway, Secrets Manager, CDK ☑️ GCP: Cloud Run (standalone & GKE), Firestore, Pub/Sub ☑️ Infrastructure as Code: Terraform, Ansible ☑️ Docker, Kubernetes (CKAD), Helm ☑️ CI/CD: GitHub Actions, Jenkins, Bitbucket Pipelines 🧑‍💻 Databases & Caching ☑️ PostgreSQL, MySQL, MongoDB, DynamoDB, Firestore ☑️ Redis, Memcached, Key-vault ☑️ Neo4j (graph db), Elasticsearch (search & analytics) 🧑‍💻 DevOps, Observability, Streaming ☑️ RabbitMQ, Apache Kafka, Apache Schema Registry ☑️ Prometheus, Grafana, Datadog, AWS CloudWatch ☑️ Log pipelines: ELK (Elasticsearch, Logstash, Kibana), Filebeat 🛠 Blockchain & Decentralized Systems ☑️ Ethereum, Web3 API, ERC-20 Token Transfers ☑️ Cowswap DEX integration ☑️ Katzenpost Mixnet-based Ethereum transaction privacy router ☑️ Secure wallet interaction, order book access, token tracking 🧑‍💻 AI / GenAI / LLM Work ☑️ LangChain, ChatGPT, Retrieval-Augmented Generation (RAG) ☑️ Slack-JIRA LLM assistant (LangChain + Python + ChromaDB) ☑️ TruthWatch: Real-time YouTube AI content audit web app ☑️ Amazon-scale LLM hosting & PDP localization pipeline ☑️ Prompt engineering, LLM pipelines, context chaining
Amit B. has worked .
Girish B.
$11.11/hr
100% Job Success
$40K+ earned
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Highly experienced, solutions-oriented professional with 10+ years of remarkable background in overseeing all aspects of the Software Development Life Cycle, from extensive analysis and design through execution and maintenance.Proficient in utilizing a wide variety of programs and tools to provide high-quality and cost-effective applications/systems to boost organizational efficiency and productivity. As a skilled developer, my passion for creating scalable and efficient software solutions, combined with my commitment to continuous learning and improvement, has led me to successfully deliver numerous projects for clients, helping them achieve their goals through my expertise. ❓ Why me: ✅ Delivering Results Focus on the key inputs and deliver them with the right quality and in a timely fashion. ✅ Life-long Learner Never done learning and always seeking to improve myself. Curious about new possibilities and taking action to explore them. ✅ Organized and Self Disciplined Take full responsibility to deliver my work on time and find the right balance between quality work and quality time with my family at home. 🛠 Technical Expertise: ⭐ Golang: Strong proficiency in Goroutines, Channels, and Concurrency Patterns ⭐ PostgreSQL: Designing and optimizing SQL queries ⭐ AWS: Strong knowledge of AWS services, including EC2, S3, RDS, Lambda, and API Gateway. ⭐ System Architecture and Design: Implementing scalable and modular software architectures, secure authentication, and authorization mechanisms. ⭐ API Development and Integration: Developing RESTful APIs using Golang and frameworks like Gin, enabling seamless integration with frontend applications. Documentation using Swagger or similar tools ⭐ Deployment and Infrastructure Management: Deploying applications to AWS cloud infrastructure using services like EC2, ECS. Deployment pipelines using tools like Jenkins or GitLab CI/CD. ⭐ Collaboration and Communication I'm a full-time Upwork freelancer, and this is not just a side hustle for me. I am confident that my expertise in Golang, PostgreSQL, and AWS, along with my passion for developing reliable and scalable backend systems, make me an ideal candidate for your team. I would welcome the opportunity to discuss your specific requirements and how I can contribute to the success of your projects in more detail. ✉ Please feel free to contact me to discuss your requirements. Thanks Girish
Girish B. has worked .
Bete G.
$25/hr
100% Job Success
$40K+ earned
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I am a Senior Backend Developer with over 4 years of professional experience. Skills And Expertise 🚀 Languages: Golang, Typescript 🚀 Backend: Gin (Golang), Node JS(Express) , Python(FastAPI) 🚀 DevOps: Nginx, Docker, Ansible, Fleuntd, Loki, Prometheus, Kubernetes, Elastic Search, Linux, IAC(Terraform),System Administration, POSIX , CI/CD (GitHub Action, Gitlab CI) 🚀 Databases: PostgresQL, MySQL , MongoDB 🚀 Messaging: NATS / PUB/SUB, NATS Jetstream / Que, GCM 🚀Cloud: AWS (EC2, IAM, S3, ECS, AWS Lambda,AWS API Gateway, AWS Fargate, RDS, DynamoDB) , GCP(RDS, Compute Engine) 🚀 Frontend: Vue JS, Nuxt 3, NextJS, Tailwind CSS, Vite
Maathavan N.
$20/hr
100% Job Success
$5K+ earned
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I am an experienced Backend Developer with extensive experience with Golang, NodeJS, TypeScript, SQL, Python, PHP, AWS, React, Flutter, Google APIs, WordPress, Payment Gateways, AI, and Rest APIs. Services - Backend Development: Custom Backend Solutions, Scalable Architecture, Microservices & Serverless - API Development & Integration: API Development, Third-Party API Integration, API Management - Database Management: SQL Databases, NoSQL Databases, Data Migration & Optimization - Cloud Services: AWS Services, Firebase Integration, Cloud Architecture - Web Development: Full-Stack Development, WordPress Development, Performance Optimization - App Development: Backend for Mobile Apps, API for Mobile Apps, Real-Time Features - AI Integration: ChatGPT API Integration, Machine Learning Models - Consulting & Support: Technical Consulting, Ongoing Support, Code Review & Optimization Why Choose Me? - Over 6 years of experience in backend development. - Proven expertise in building and integrating APIs. - Strong problem-solving skills and attention to detail. - Commitment to delivering projects on time and within budget. - Excellent communication and collaboration skills. Let's Work Together! I am excited to bring my skills and experience to your project. Let's discuss how I can help you achieve your goals with efficient and scalable backend solutions. Feel free to reach out to me for a detailed discussion.
Callistus N.
$30/hr
100% Job Success
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👨‍💼 Individual developer 🚀 I’m a driven full-stack developer with 7+ years of experience building secure, scalable, and resilient systems. My core expertise is in Symfony/PHP, with strong experience in Golang, Spring and Java for backend and distributed applications. I focus on writing clean, efficient code with security, performance, and resilience in mind. Over the years I’ve built systems from scratch, integrated third-party APIs, and delivered production-ready solutions for clients across different industries. Key Skills & Tools Backend: Symfony, Sylius, Laravel, Golang, Spring Boot Frontend: React (MUI, Ant Design), Vue (Vuetify) Databases: MySQL, PostgreSQL, MongoDB, DynamoDB Messaging & Caching: RabbitMQ, Kafka, Redis, Memcached Cloud & APIs: AWS (S3, RDS, DynamoDB), Google Cloud, Stripe, PayPal, Twilio Architecture & Patterns: DDD, CQRS, Event Sourcing, Clean Architecture DevOps & Collaboration: Docker, Kubernetes, Jenkins, GitHub/GitLab, Jira I thrive in Agile teams and enjoy solving complex problems with modern design patterns. If you’re looking for someone who can take ownership of backend architecture, API integrations, or full-stack development, I’d love to connect.