Hire the Best Microservices Developers
in Vietnam

I’m a Camunda Expert, BPM Consultant, and Solution Architect with 10+ years of experience in process automation and AI-powered product development. I help businesses design and build intelligent systems—from workflow automation with Camunda to AI-powered applications like chatbots, voice assistants, and document processing platforms. Beyond traditional BPM, I deliver end-to-end AI solutions, including: AI chatbots & assistants (customer support, internal tools, workflow copilots) AI voice chat & voice bots (real-time conversation, call automation) LLM integration (OpenAI APIs, prompt design, orchestration) Model fine-tuning & optimization Document processing (OCR + AI extraction + validation workflows) AI + BPM integration (embedding AI into Camunda workflows) I design scalable, production-ready systems using Camunda (Platform 7/8), Java, Spring Boot, Microservices, and Cloud (AWS, GCP/GKE, Kubernetes)—ensuring your solutions are reliable, maintainable, and future-proof. What I can help you with: Camunda implementation, optimization & migration (7 → 8) BPMN workflow design & process automation AI product development (chatbots, voice AI, intelligent workflows) System architecture & microservices design Backend development (Java, Spring Boot, REST APIs) I focus on practical AI that delivers real business impact—reducing manual work, improving decision-making, and enabling scalable automation. If you’re looking for a partner to design and deliver AI-powered automation or intelligent systems, I can help you take it from idea to production.

I have 6 years of working experience in the software industry, and I am confident most as a Backend Developer and Data Engineer. For now, I want to spend more time on the freelance path, to help others solve their problem happily. As a backend developer: - I build microservices using Java and Go - I design a Database schema for features I work on. - I write REST API and work with the frontend team for integration. As a data engineer: - I do ETL tasks. - I write batch jobs and real-time jobs for streaming over 50 GB of data per day. - I store processing data into HBase, MySQL. - I visualize data to make it meaningful to others. Besides, I also spend time playing with frontend stuff such as NextJS, VueJS, CSS. Availability: My time zone is GMT+7, but I am flexible on working time, even at midnight. If you want to work with me for more than 30 hours, just say it, I will consider working more. Let’s work together to turn your idea into reality!

🏛️ 𝐀𝐥𝐩𝐡𝐚 𝐝𝐢𝐞𝐬 𝐢𝐧 𝐛𝐚𝐝 𝐢𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞. Brilliant quantitative logic is worthless if your execution architecture bleeds capital under live-market pressure. I see it constantly: founders deploying systems that print money in backtests, only to watch them collapse in production because their MT5 terminals or TradingView webhooks aren't properly bridged to a high-performance backend. I solve this. As a Quantitative Systems Architect, I build sub-millisecond Python execution vessels that turn fragile, isolated trading scripts into resilient, production-ready infrastructure. With deep experience in financial market infrastructure, I specialize in Project Rescue and Scale-Up Architecture. I act as your hands-on Technical Partner: one single point of contact, strict engineering rigor, and absolute risk control. ━━━ 𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗 ━━━ Algorithmic Trading & Execution Engines Architecting institutional-grade automated systems natively across MT5 (MQL5) and TradingView (Pine Script v6). Building sub-millisecond Python execution vessels, utilizing WebSockets and ZeroMQ to route signals instantly from your Master API to the broker. Trade lifecycle management: precise order chunking, slippage caps, and dynamic trailing logic. Fintech SaaS & Prop Firm Infrastructure Designing high-concurrency B2B dashboards and server-side risk management microservices (Next.js, FastAPI, MetaApi). Enforcing strict Prop Firm drawdowns, daily loss locks, and automated equity syncing to protect capital from emotional trading. Bridging traditional frontend terminals (MT5/TV) with robust Python backends. Broker API & Data Pipelines Direct integration with Rithmic (R-API+), Binance, Bybit, and FIX protocols. Structuring historical MBO, tick-level, and order-book data ingestion pipelines (e.g., Databento) for accurate backtesting and ML-feature extraction. ━━━ 𝗪𝗛𝗬 𝗙𝗢𝗨𝗡𝗗𝗘𝗥𝗦 & 𝗤𝗨𝗔𝗡𝗧𝗦 𝗪𝗢𝗥𝗞 𝗪𝗜𝗧𝗛 𝗠𝗘 ━━━ I Understand Both Software Engineering and Quantitative Finance I speak your language. I don't just understand basic SL/TP; I understand Level 3 Order Books, Liquidity Voids, Lock-free Ring Buffers, and Structural Risk Validation. I don’t approximate your logic; I implement your mathematical models exactly as defined. Exact Logic, No Guesswork I build systems from the ground up with strict determinism. Every rule is coded, logged, and tested. If a condition is ambiguous, I clarify it before execution to ensure the system behaves 100% as expected under live-market stress. Zero Hand-Holding Required As your Fractional CTO, I don't just write code blindly. I audit your architecture, tell you exactly what is causing latency or system failures, and execute the fix. ━━━ 𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞 & 𝗣𝗟𝗔𝗧𝗙𝗢𝗥𝗠𝗦 ━━━ Languages: Python, C++, MQL5, Pine Script, TypeScript. Trading Platforms: MetaTrader 5 (MT5), TradingView. APIs & Data: Rithmic (R-API+), MetaApi, Databento, REST/WebSockets, FIX Protocol. Backend & SaaS: FastAPI, Next.js, ZeroMQ, Docker, Microservices Architecture. 🚀 Let's build something that scales. Send me your trading strategy, MT5 setup, or SaaS architecture plan. I will tell you exactly where the bottlenecks are and outline a strategic roadmap to fix them. ━━━ Keywords: Fractional CTO | Quantitative Finance Architect | Enterprise SaaS Architecture | Algorithmic Trading Systems | MT4 | MT5 | MQL5 | NinjaTrader 8 | NT8 | C# | TradingView | Pine Script | Prop Firm Tech Stack | Binance API | CCXT | Crypto Exchange Integration | Blockchain Developer | Web3 Infrastructure | DeFi Protocol | Payment Gateway Integration | Node.js | Next.js | Python | High-Concurrency Backend | Microservices | MetaApi | PCI-DSS | Project Rescue | High-Agency Developer

Hello, I am a full stack software developer, freelancing world wide. I apply SDLC, OOAD, SOLID and other software craftsmanship practices.. but not forget to use KISS principle. I’m experienced in creating web applications, web services, specializes in scalable, enterprise-level application development and engineering solutions for exceptionally high throughput. Over 10 years of experiences in technical consultant, and architect, specializes in full-stack, highly scalable, real-time data services, I have delivered top quality technical architecture, programming, testing and solutions for complex problems on-time and within budget.. I'm an Agile Kanban practitioner who loves to collaborate on development projects. Languages and Frameworks: .Net Core, C#, Nest js, Next js, Python, Node.js, Angular, ngRx, React, Redux, Mobx, Vue js, Knockout.js, Cordova , Express.js, Gulp.js, Mean Stack, ASP.Net MVC, C#, REST API, Grunt, Javascript, Jquery, HTML5, CSS, Bootstrap, Material Design, GraphQL , MongoDB, PostgreSQL, Test-driven Development (TDD), Software Architecture, SAAS, Microservices, Serverless, AWS, Azure Cloud Services, Azure Pipeline, CI/CD DevOps, Docker, Kubernetes. Highly skilled and experienced in: . Web User Interface, User Experienced modern design and implementation . Database creation, integration, and management . Using back-end frameworks to build server-side services, Web API, Restful service implemenetation and integration . Cloud server integration, especailly Azure . Content management system (CMS) development, deployment, and maintenance . Data analysis and reporting, visualization and business intelligent with Power BI . Architect .NET solutions. Well-versed in .NET frameworks, Web/Windows Services, and Team Foundation Servers, GIT . Gathering business requirements, completing key architecture design, and overseeing low-level and high-level design and documentation across the software development lifecycle. I'm working with agility, cooperation with trust and quality, experienced in Scrum Agile. I'm looking for long-term cooperation in freelancing work with you ! Thank you in advance for your time and consideration.

Hello, I’m Jason Nhien Truong, a Senior Software Engineer and Software Architect with over 20 years of professional experience delivering reliable, maintainable software solutions for businesses across multiple industries. I specialize in C# and .NET development, Windows desktop applications, enterprise web systems, SQL databases, and Azure-based platforms. I help clients modernize legacy systems, stabilize and scale existing products, and build new applications with a strong focus on performance, usability, and long-term maintainability. I work closely with stakeholders to translate business needs into practical, well-structured technical solutions. What I offer Full-stack .NET development I work across the .NET ecosystem, from legacy ASP.NET Web Forms to modern .NET 8 APIs and microservices. I design secure, scalable backend systems with clean architecture and clear separation of concerns. Windows desktop application development I have extensive experience building and maintaining Windows desktop applications using WinForms and WPF, including MVVM-based WPF applications. I focus on responsive UI behavior, clean data binding, maintainable ViewModel design, and user-friendly workflows for business-critical desktop software. Enterprise UI with DevExpress and Telerik I have deep expertise with DevExpress and Telerik controls for WinForms and web applications. I redesign and modernize complex UIs to improve usability, consistency, and performance without breaking existing business logic. Database architecture and optimization Strong experience with SQL Server, PostgreSQL, MySQL, and Azure SQL. I design schemas, optimize queries, and ensure data integrity and stability in production systems. Azure cloud and DevOps Hands-on experience deploying and maintaining applications on Azure, including CI/CD pipelines, containerized services, background processing, and cloud-based integrations. Testing and automation I write unit and integration tests using xUnit and NUnit, and implement automation with Selenium and AutoIt to improve quality and reduce regression risk. Key technical skills Languages and platforms C#, .NET Core, .NET 8, ASP.NET, SQL, JavaScript, HTML, CSS, Python Desktop development WinForms, WPF, MVVM, DevExpress WinForms, Telerik UI Frameworks and tools Entity Framework, LINQ, Docker, Azure DevOps Databases SQL Server, PostgreSQL, MySQL, MongoDB, Azure SQL Cloud and monitoring Azure, Kubernetes, Azure Service Bus, Prometheus, Grafana Architecture Microservices, Clean Architecture, Domain-Driven Design Selected projects Web forecasting application maintenance Maintained and enhanced a legacy ASP.NET Web Forms application using SQL Server 2022 and Telerik UI. Improved UI workflows, business logic, and performance. Betx – cloud-native microservices platform Developed backend microservices using .NET 8 and Web API. Worked on PostgreSQL data modeling, Azure Kubernetes deployment, secure APIs, messaging, and observability with Prometheus and Grafana. Custom ERP system for manufacturing Built a custom ERP system using C# and SQL Server, including workflows, reporting, role-based access, and third-party integrations. Carrier pricing API integration Integrated FedEx and UPS APIs for real-time pricing, data synchronization, and robust error handling with retries and logging. Why work with me I bring deep technical experience, strong ownership, and a business-focused mindset. I communicate clearly, meet commitments, and build software that remains stable and maintainable over time. Availability Open to full-time or part-time engagements. Flexible with time zones for long-term projects. If you’re looking for a senior .NET engineer who can handle both backend systems and Windows desktop applications with confidence, feel free to reach out.

Hi! I’m Minh Hoang - a Senior Full-Stack Engineer and Technical Lead with 7+ years of experience building and scaling SaaS products, with a strong focus on AI-powered applications. I work with startups and founders to turn ideas into real, production-grade systems fast. My edge is combining deep engineering expertise with AI-accelerated development workflows, allowing me to ship high-quality products significantly faster than traditional teams. 🚀 What I Do Best 💻 Full-Stack & AI-Enhanced Development • Expert in React, Next.js, Node.js, TypeScript, Supabase • Fast delivery using AI coding tools: Lovable, Cursor, Vibe Code, Replit, Base44, Code Augment • Clean, modern architectures with excellent performance and maintainability ⚙️ Idea → Architecture → Production I own products from first sketch to deployment, including: • System design & architecture • API development & data modeling • Cloud infrastructure (AWS, Render, Vercel) • CI/CD pipelines, testing, documentation • Internal dashboards, design systems, and custom tooling 🧑‍💻 Solo Developer Delivery • Frontend & backend development • Infrastructure & DevOps • AI integrations • Admin panels, dashboards, automations • Migrations, refactors, system upgrades 🧠 Domain Expertise • AI & LLM Integrations • Logistics & Optimization Tools • Internal Management Tools • Healthcare • Real Estate • E-Learning (LMS) • Data Visualization • OTT & Video Streaming 🌟 Project Highlights • Delivered full SaaS platforms as lead or solo engineer • Modernized legacy systems with modular architectures • Converted 80+ pages of engineering logic into production software • Built high-performance video player modules • Created internal tools for automation and analytics 🛠️ Technical Strengths • Languages: TypeScript, JavaScript, Go, Java, Python • Frontend: React, Next.js, Vue.js, TailwindCSS, Material UI, Jquery • Backend: Node.js, NestJS, Go, PostgreSQL, Supabase • DevOps: AWS (S3, Amplify, KnowledgeBase, ...), Render, Vercel, Docker, GitLab CI/CD, Jenkins • AI & Automation: n8n, OpenAI, LLM integrations, AI-driven tools • Testing: Jest, Storybook, React Testing Library • 3rd-Party Integrations: Garmin, Suunto, Oura, Apple Health, Google Health, Whoop, Xero, ... • Payments & Billing: Stripe, PayPal, Lemon Squeezy • AI Tool: Claude, Cursor, Codex, Antigrativy, Replit, Lovable • Media/Streaming: HLS, DASH, VideoJS, Shaka ✨ Why Clients Work With Me • Fast, clean, scalable engineering • Clear communication & reliable delivery • AI-accelerated development enables rapid iteration • Strong focus on solving real business problems 💬 Let’s Build Something Great If you need an MVP, SaaS product, internal dashboard, AI integration, or system overhaul, I can design it, build it, and ship it efficiently and professionally.