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Indonesia
$5/hr
100%
Job Success
$2K+ earned
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Hi! I’m a Full-Stack Developer with 3-4 years of hands-on experience building scalable web applications and APIs. I love turning complex problems into clean, maintainable solutions and constantly expanding my skills in modern technologies.
What I bring to your project:
- Backend: PHP (Laravel, CodeIgniter), Node.js, Golang
- Frontend: React, Vue.js
- Database & DevOps: MySQL, PostgreSQL, Docker, Redis, RabbitMQ, Microservices
Experience building full-featured web applications, custom dashboards, and API integrations
I’m ready to collaborate on projects where quality, speed, and maintainability matter. If you need a developer who can handle both frontend and backend and bring fresh ideas, let’s connect!
Irfani A.
has worked
.
$10/hr
100%
Job Success
$1K+ earned
Start of list.
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As a Full Stack Software Developer with over 2 years of experience, I specialize in creating high-performance applications utilizing Golang and React. I am passionate about building scalable, efficient, and user-friendly web applications that deliver real value to clients.
Languages: Golang, Typescript, Python
Frameworks: Django, Flask, Go-Chi, Gin Gonic, ReactJS, ExpressJS
Databases: PostgreSQL, Microsoft SQL Server, MongoDB, Redis
Technologies: Kafka, Consul, OCP, Prometheus, Grafana, Jaeger
I am committed to delivering projects on time and within budget, while maintaining open and transparent communication with clients throughout the process.
Let’s connect and turn your ideas into reality!
$40/hr
100%
Job Success
$40K+ earned
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Results-driven Computer Scientist, Expert in Golang & Node.js, AI Specialist, Agent creator and Full Stack Engineer with 6+ years of leadership experience in large-scale enterprise products serving millions of global users. Specialising in robust system architecture, scalable database design, and cutting-edge AI integrations. Proven track record of delivering high-performance solutions for enterprise clients while leading cross-functional teams.
AI Integrations:
✅ LangGraph, LangChain, Composio tools, Pipedream, N8n and custom workflow agents creations.
✅ ChatGPT (Completions, Structured outputs & more) integration
✅ OpenAI realtime models (Voice to voice communication using WebRTC & WebSocket)
✅ Claude (Sonnet 3.7 etc)
✅ DeepSeek
✅ ElevenLabs (Text to speech etc)
✅ Gemini
Major Tech Stack:
✅ MERN stack
✅ TypeScript
✅ NodeJs
✅ Express JS/TS
✅ GoLang
✅ React JS/TS
✅ NextJs (SEO friendly)
✅ ES-Lint
✅ ShadCN & v0 by vercel
✅ Vercel
✅ Tailwind, MUI, & Bootstrap CSS framework
✅ PostgreSQL, SQL, & Mongoose
✅ Prisma ORM
Payment Integration:
✅ Stripe Recurring Model
✅ Stripe 1-time payment model
OAuth Flows:
✅ Google OAuth 2.0
✅ Facebook OAuth 2.0
✅ Discord OAuth 2.0
✅ Twitter OAuth 1.0/2.0
✅ OTP-less Whatsapp
3rd-Party Integration:
✅ Twilio SMS APIs
✅ Whatsapp Business APIs
✅ Automated Slack Integration
Server & DevOps:
✅ CI/CD using GitHub Actions.
✅ S3 SDKs.
✅ CDN (S3, CDN77, CloudFlare, Wasabi, Idrive E2)
✅ Nginx Proxy server
✅ PM2 process managers
✅ Docker
✅ Droplets / Load Balancing / Networking (Firewall)
Side-Ons:
✅ Git & GitHub for version controlling
✅ Jira & Trello for project management
✅ GitLab for versioning and PM.
✅ Zod, Husky
I value your interest in my professional qualifications and look forward to potential collaboration!
$20/hr
100%
Job Success
Available now
Offers consultations
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Senior full-stack engineer with 12 years building production software end to end — modern web frontends, the APIs and services behind them, and the infrastructure to ship and scale them. Core stack: TypeScript/React/Next.js on the front, Rust, Go, and Node.js on the back.
Most full-stack developers are frontend-heavy and treat the backend as an afterthought. I'm the opposite: deep backend and distributed-systems experience, paired with a frontend I can actually build and ship myself. That means you can hand one senior person an entire product — UI to database to deployment — instead of stitching together three contractors and hoping the seams hold.
Where I do my best work:
• End-to-end product builds — Next.js frontends backed by Rust/Go/Node services, zero to deployed
• AI/LLM applications — chat interfaces, agentic workflows, RAG pipelines, and the backend plumbing to make them reliable and cost-controlled
• Backend-heavy systems — performance-critical APIs, event-driven architecture, and stabilizing services that have outgrown their original design
On AI and speed: I've spent the last two years building my own tooling — including TokenPilot, a token-optimization plugin for Claude Code — and I fold modern AI workflows into client work. That buys faster prototyping and tighter iteration, but the architecture and the judgment behind it stay senior-level and hand-reviewed. The hard part of an AI product isn't the demo; it's making it hold up once real users hit it. Twelve years of backend experience is what makes the difference there.
If you've got a web app, an AI product, or a backend that needs to be built right the first time — and you'd rather work with one senior engineer than coordinate a team — send me the details. I'll tell you honestly whether I'm the right fit and how I'd approach it.
$25/hr
99%
Job Success
$50K+ earned
Start of list.
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Full-stack Software Engineer with extensive Automation experience.
➢ Core competencies:
➢ AI / Machine Learning / Automation: AI Document Processing | AI Business Automation | AI Chatbots & Agents | AI Voice & Speech Recognition | AI Transcription & NLP | Predictive Analytics | OCR & Data Extraction | Workflow Automation | OpenAI API & LangChain
➢ Automation / Integration Tools: Zapier | Make.com | n8n | Slack / Twilio / WhatsApp APIs | REST & GraphQL APIs | Webhooks
➢ PHP: Laravel | Symfony | Phalcon | Codeigniter | CakePHP | WordPress | Yii | Drupal
➢ Node.JS: Express | Sails.JS | Loopback | Feathers.JS
➢ Automation (Selenium): Object Repository | Checkpoints |Object Identification | Descriptive Programming | Recovery Scenario Manager
➢ Databases: MySQL | MSSQL | DynamoDB | MongoDB
➢ Source Code Management: Git | Bitbucket | Gitlab
➢ Project Management: Jira | Trello | Asana
Want to work together? Great!
Let's open a communication channel & I will be glad to partner up with you.
Associated with
DEVtrust
$2M+
earned
$28/hr
100%
Job Success
Available now
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Hey! I'm Bhavya, a Senior Software Engineer experienced in building scalable blockchain platforms and production-ready backend architectures for startups and enterprises.
𝗜 𝘀𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗲 𝗶𝗻:
𝗦𝗺𝗮𝗿𝘁 𝗖𝗼𝗻𝘁𝗿𝗮𝗰𝘁𝘀 & 𝗢𝗻-𝗖𝗵𝗮𝗶𝗻 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝘀 (𝗘𝗩𝗠 + 𝗦𝗼𝗹𝗮𝗻𝗮)
• Solidity: ERC-20, ERC-721, ERC-1155, role-based and modular systems
• DeFi logic, staking, vesting, token flows, marketplace mechanisms
• Cross-chain patterns and multi-chain asset logic (L2s, bridges, relayers)
• Contract security, invariant checks, audits, gas optimization
• Solana (Rust): SPL tokens, PDAs, CPI calls, staking/vesting/escrow programs
• Anchor framework and performance-oriented custom Rust programs
𝗪𝗲𝗯𝟯 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴
• Go (advanced) and Rust backend development
• Blockchain indexers, listeners, and event-driven data pipelines
• Wallet abstractions, signer services, automated distribution engines
• RPC/WebSocket integrations and backend-driven smart contract interactions
• High-performance APIs for dashboards, token analytics, or marketplaces
𝗪𝗲𝗯𝟯 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱
• Next.js / React dApps
• Wallet integrations (MetaMask, WalletConnect, Phantom, Ledger)
• Client-side signing and secure transaction flows
• Applications for minting, staking, swaps, dashboards, and marketplaces
• ethers.js / web3.js / @solana/web3.js integrations
𝗣𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗜 𝘄𝗼𝗿𝗸 𝗼𝗻 𝗶𝗻𝗰𝗹𝘂𝗱𝗲:
• Smart contract systems (Solidity / Solana Rust)
• Tokenization, identity systems, marketplaces, and DeFi workflows
• Backend microservices for dashboards, SaaS tools, or launchpads
• Cross-chain applications, high-security wallets, and cryptographic libraries
• Blockchain infrastructure, RPC tooling, and protocol-level extensions
𝗬𝗼𝘂 𝗴𝗲𝘁:
• Clean, maintainable, production-ready code
• Clear communication and proactive problem-solving
• Senior-level product thinking (not just coding tasks)
• Architecture that avoids future technical debt
• Fast execution without compromising quality
𝗜 𝗽𝗿𝗶𝗼𝗿𝗶𝘁𝗶𝘀𝗲 𝗰𝗹𝗮𝗿𝗶𝘁𝘆, 𝘀𝗽𝗲𝗲𝗱, 𝗮𝗻𝗱 𝘆𝗼𝘂𝗿 𝘀𝗮𝘁𝗶𝘀𝗳𝗮𝗰𝘁𝗶𝗼𝗻, 𝗽𝗿𝗼𝘃𝗶𝗱𝗶𝗻𝗴 𝗹𝗼𝗻𝗴-𝘁𝗲𝗿𝗺 𝘀𝘂𝗽𝗽𝗼𝗿𝘁 𝗳𝗼𝗿 𝗲𝘃𝗲𝗿𝘆 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝘆.
𝗟𝗲𝘁'𝘀 𝗵𝗼𝗽 𝗼𝗻 𝗮 𝗾𝘂𝗶𝗰𝗸 𝗰𝗮𝗹𝗹 𝗳𝗼𝗿 𝘆𝗼𝘂𝗿 𝗻𝗲𝘅𝘁 𝗽𝗿𝗼𝗷𝗲𝗰𝘁!
$15/hr
100%
Job Success
$1K+ earned
Start of list.
End of list.
I’m a Back-End & AI developer passionate about building scalable, reliable systems and AI-powered solutions. I help startups and businesses create high-performance backends and microservices that solve real problems.
Tech Expertise
Backend: Node.js, Go (Golang), Python, PHP(Laravel) – building RESTful APIs, microservices, and systems that scale
Databases: PostgreSQL, MySQL, MongoDB, Redis – designing reliable, fast data storage and caching
AI/MLL: AI agents, Lang Chain, RAG (retrieval-augmented generation), custom machine learning pipelines, model deployment and integration
Cloud & DevOps: Docker, Kubernetes, AWS, CI/CD – making sure your apps run smoothly at scale
$25/hr
100%
Job Success
$10K+ earned
Offers consultations
Start of list.
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I build production-ready AI systems and scalable cloud infrastructure for startups and businesses.
My expertise combines AI engineering, backend systems, Kubernetes, and DevOps to deploy reliable LLM applications, AI SaaS platforms, RAG pipelines, and inference infrastructure that can scale in production. I focus on real-world AI engineering, not just prototypes. That includes designing systems that are scalable, observable, cost-efficient, secure, and easy to operate under production workloads.
I have experience working with:
- Generative AI applications & AI SaaS platforms.
- AI agents & autonomous workflows.
- RAG pipelines & vector search systems.
- Voice AI & speech processing systems.
- Fine-tuning & custom model workflows.
- LLM serving, inference optimization & GPU deployments.
- AI orchestration & automation pipelines.
- FastAPI & Golang backend services.
- REST APIs, WebSockets & streaming systems.
- Distributed systems & microservices architecture.
- Kubernetes-based AI platforms & cloud infrastructure.
- CI/CD pipelines & Infrastructure as Code.
- Observability, monitoring & distributed tracing.
- Autoscaling, performance optimization & production reliability.
- Cloud-native deployments on AWS, GCP & self-hosted environments.
𝗔𝗜 / 𝗟𝗟𝗠 / 𝗚𝗲𝗻𝗲𝗿𝗮𝘁𝗶𝘃𝗲 𝗔𝗜:
OpenAI API, LangChain, LangGraph, CrewAI, AutoGen, Hugging Face, Transformers, vLLM, Ollama, LLaMA, Mistral, Whisper, Faster-Whisper, RAG pipelines, vector databases, prompt engineering, AI orchestration, fine-tuning workflows, inference optimization.
𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴:
Python, Golang, FastAPI, Flask, Django, REST APIs, gRPC, WebSockets, streaming APIs, distributed systems, microservices architecture.
𝗗𝗲𝘃𝗢𝗽𝘀 / 𝗖𝗹𝗼𝘂𝗱 / 𝗟𝗟𝗠𝗢𝗽𝘀:
Kubernetes, Docker, Helm, Terraform, ArgoCD, GitHub Actions, AWS, GCP, Hetzner, CI/CD pipelines, Infrastructure as Code, GPU deployments, autoscaling, cloud-native architecture.
𝗢𝗯𝘀𝗲𝗿𝘃𝗮𝗯𝗶𝗹𝗶𝘁𝘆:
Prometheus, Grafana, OpenTelemetry, distributed tracing, centralized logging, monitoring pipelines.
𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀:
PostgreSQL, MySQL, Redis, MongoDB, ClickHouse, Firebase, vector databases.
𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻:
Playwright, Selenium, Scrapy, BeautifulSoup, workflow automation, data pipelines.
If you need someone who can architect, deploy, and scale AI systems end-to-end, from AI applications and backend APIs to Kubernetes infrastructure and production operations, I can help.
Rokibul H.
has worked
.
United States
$120/hr
100%
Job Success
Start of list.
End of list.
🚀 Innovative Full Stack Software expert with 10+ years of transforming ideas into cutting-edge digital solutions. From Fortune 5 giants to agile startups, I've led high-impact teams and delivered game-changing products that push technological boundaries.
💡 My expertise spans:
• AI/ML Integration - Building intelligent applications with ChatGPT, custom ML models, and advanced AI tools
• Mobile Development - Native iOS/Android apps and cross-platform solutions using React Native & Flutter
• Full Stack Mastery - End-to-end architecture from cloud infrastructure to polished front-end experiences
• Cloud & DevOps - AWS, GCP, Docker, and modern CI/CD pipelines
• Backend Power - Go, NodeJS, Java, Python, with both SQL and NoSQL databases
• Frontend Innovation - React, Angular, NextJS, TypeScript for responsive, modern web applications
🎯 I specialize in bridging the gap between cutting-edge AI capabilities and real-world business needs. Whether it's integrating ChatGPT for enhanced user experiences, developing smart mobile applications, or architecting scalable cloud solutions, I bring a strategic approach to every project.
🤝 Looking to elevate your digital presence with AI-powered solutions or build the next revolutionary mobile app? Let's connect and transform your vision into reality! I thrive on challenges and am passionate about delivering excellence through innovation.
Ready to bring your project to life? Let's discuss how we can leverage modern technology to achieve your goals!
I'm always looking for new and exciting opportunities. Let’s connect!
Associated with
TopSoft Consulting
$30/hr
100%
Job Success
$60K+ earned
Start of list.
End of list.
PHP, Golang
Android/Kotlin
MySQL, PostgreSQL, MongoDB, Redis, Memcached, RabbitMQ, Sphinx
REST, XML-RPC, JSON-RPC
OOP, Software Architecture, DB Architecture, Optimization
Docker, Ansible, Helm, Kubernetes
Bogdan N.
has worked
.