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$15/hr
86% Job Success
$20K+ earned
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I'm a full stack developer specializing in React, Node.js, and TypeScript. I build production web applications that handle payments, user data, complex workflows, fintech platforms, admin dashboards, SaaS products, and AI-powered automation tools. As a full stack developer, I've shipped 20+ production applications for clients across the UK, Australia, South Korea, Hong Kong, Netherlands, and Zambia. My full stack development work includes Stripe payment systems processing automated payouts, admin panels managing thousands of users across multiple roles, real-time dashboards with WebSocket data feeds, mobile money integrations for African markets (MTN, Airtel, Zamtel), and AI features using OpenAI and Claude APIs. Most of my full stack developer projects involve taking a business idea or existing codebase and turning it into something that works at scale. I handle both frontend and backend development, building the user interface, designing the API architecture, setting up the database, and deploying to production. Clean architecture, documented code, and systems that don't break when you scale. What I work with most: Frontend: React, Next.js, TypeScript, Tailwind CSS, Zustand, Framer Motion Backend: Node.js, Express, Supabase Edge Functions, REST APIs, WebSockets Databases: PostgreSQL (Prisma), MySQL, MongoDB, Redis Payments: Stripe (Connect, Webhooks, PaymentIntents, Subscriptions), Mobile Money (MTN, Airtel, Zamtel) AI Integration: OpenAI GPT-4o, Anthropic Claude API, custom automation workflows Cloud & Deployment: AWS, Netlify, Railway, Vercel, DigitalOcean Industries I've worked in: As a full stack developer, I've built applications across fintech, healthcare, education, transportation, SaaS, e-commerce, and marketing automation. How I work: I handle projects end-to-end from architecture decisions to deployment. I work solo on most builds, but I also co-founded Fluxium Agency, which means if your project needs to accelerate or something unexpected comes up, I can bring in additional developers without missing a beat. You always deal with me directly no middlemen, no handoffs. If your project involves building a web application, integrating payments, setting up admin dashboards, or connecting APIs send me a message. I'll be honest about whether I'm the right fit.
Fluxium
Associated with
Fluxium
$10K+
earned
Keshu K.
$25/hr
100% Job Success
$200K+ earned
Available now
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𝟏𝟒+ 𝐲𝐞𝐚𝐫𝐬 | 𝟒𝟓+ 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 | 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 | 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝. I integrate AI into software that already exists and I fix software that AI-assisted development left unfinished. 𝗠𝗼𝘀𝘁 𝗔𝗜 𝘄𝗼𝗿𝗸 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝘀𝘁𝗮𝗿𝘁𝘀 𝗳𝗿𝗼𝗺 𝘀𝗰𝗿𝗮𝘁𝗰𝗵. 𝗠𝗶𝗻𝗲 𝗱𝗼𝗲𝘀 𝗻𝗼𝘁. I work inside your existing codebase, your stack, your architecture, your constraints and I add AI where it creates real operational value. Natural language interfaces. Document intelligence. AI agents that connect to your actual business data. Workflow automation that replaces manual processes your team has lived with for years. I also build MCP servers the integration layer that connects your existing product to AI tools like Claude and ChatGPT, and to AI agents, so your software becomes part of how your clients' teams actually work. I also take over when AI-assisted development stalls. If your team used Cursor, Lovable, Claude Code, or Bolt to build something that is not production-ready - the logic is incomplete, the architecture does not scale, or no one can maintain it - I assess it honestly and either stabilize it or tell you exactly what it will take. 𝐀𝐈 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 𝐰𝐨𝐫𝐤 𝐈 𝐡𝐚𝐯𝐞 𝐬𝐡𝐢𝐩𝐩𝐞𝐝: - 𝗙𝗶𝗻𝗮𝗻𝗰𝗶𝗮𝗹 𝗦𝗮𝗮𝗦: natural language to SQL over enterprise datasets, giving non-technical users direct access to data they previously needed analysts to retrieve - 𝗡𝗼𝗻-𝗽𝗿𝗼𝗳𝗶𝘁 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺: document retrieval and conversational AI using Azure OpenAI and GPT-3.5 Turbo, built to be reliable under real usage conditions, not just demos - 𝗟𝗼𝗴𝗶𝘀𝘁𝗶𝗰𝘀 𝗦𝗮𝗮𝗦: used AI-assisted prototyping to replace missing documentation - took client calls, built working screens in Lovable, walked clients through them, got confirmed scope before production code was written. Phase 1 delivered with zero scope drift. Full-stack delivery across supply chain and logistics, real estate and GIS, operational SaaS, and fintech - including the Eshopbox supply chain platform: 2.7x sales growth, 3.7x profitability, 22% cost reduction, 60 hours per week saved. GIS platforms handling millions of property records with predictive analytics and IDX integration. 𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧: OpenAI API, Claude API, Azure OpenAI, LangChain, RAG pipelines, AI agents, MCP servers, vector databases 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸: .NET Core, React, Angular, Node.js, React-Native, Flutter, Python, TypeScript, Next.js, FastAPI 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲: AWS, PostgreSQL, MongoDB, Docker, REST APIs I work with founders, CTOs, and product teams who are past the experiment phase. You have software in production, or you are building something that has to work in production. You need someone who can operate inside your existing system, make defensible architectural decisions, and deliver without creating a new set of problems. I use AI in my own development process - not to replace judgment, but to move faster without cutting corners. That is also how I evaluate AI-assisted code when I am called in to fix it. 𝗜𝗳 𝘆𝗼𝘂 𝗮𝗿𝗲 𝘀𝘁𝗶𝗹𝗹 𝘀𝗰𝗼𝗽𝗶𝗻𝗴, 𝗜 𝗼𝗳𝗳𝗲𝗿 𝗮 𝟯𝟬-𝗺𝗶𝗻𝘂𝘁𝗲 𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 𝗮 𝗱𝗶𝗿𝗲𝗰𝘁 𝗰𝗼𝗻𝘃𝗲𝗿𝘀𝗮𝘁𝗶𝗼𝗻 𝗮𝗯𝗼𝘂𝘁 𝗳𝗲𝗮𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝘆, 𝗵𝗼𝗻𝗲𝘀𝘁 𝗯𝗹𝗼𝗰𝗸𝗲𝗿𝘀, 𝗮𝗻𝗱 𝗻𝗲𝘅𝘁 𝘀𝘁𝗲𝗽𝘀.
TechAvidus
Associated with
TechAvidus
$300K+
earned
Yogana V.
$25/hr
100% Job Success
$4K+ earned
Available now
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🏅 Top Rated AI Engineer | 5+ Years of Experience | Top 1% on Upwork 🔥 100% Job Success Rate | 300+ Hours of Production-Grade AI Delivery I help businesses eliminate inefficiencies, automate workflows, and scale faster using AI-powered systems. From initial architecture to production deployment, I build custom AI platforms, autonomous agents, and scalable web/mobile applications that drive revenue and reduce operational costs. 🚀 What I Do: I design and deploy end-to-end AI solutions that run reliably in production. Whether you need autonomous AI sales agents, custom voice automation, or complex API/system integrations, I bridge the gap between advanced AI capabilities and robust full-stack engineering. 🤖 AI Agents & Autonomous Systems: Build your own AI-powered workforce that runs 24/7: - AI Sales Teams (AI SDRs): Lead qualification, outreach, booking meetings - AI Marketing Systems: Content generation, personalization, campaign analytics - AI Customer Support: Instant responses, smart routing, human-in-the-loop escalation - AI Dev Assistants: Code review, testing, documentation automation - Multi-Agent Systems: CrewAI, LangChain, LangGraph, AutoGen - Human-in-the-Loop Dashboards: Full visibility and control over agent actions 🎙️ Voice AI (Inbound & Outbound): Production-ready voice agents for sales and support: - AI Call Agents: Customer support, lead qualification, and booking - Outbound AI Calling: Smart cold outreach and warm follow-ups - AI Receptionist: 24/7 call handling and scheduling - CRM-Integrated Pipelines: Automatic call logging, transcription, and analytics - Core Tech: Vapi, Retell AI, Bland AI, ElevenLabs, Twilio 🔥 MCP & Advanced AI Architectures: - Custom Model Context Protocol (MCP) servers (Python, Node.js, TypeScript) - Claude / ChatGPT custom tool integrations - Tool-calling AI agents with secure data and API access - Advanced RAG (Retrieval-Augmented Generation) systems with Vector DBs - Enterprise-grade AI architecture design 🔄 Workflow Automation & System Integration: I automate complex operations across your entire business stack: - Multi-step workflows across 10+ tools and platforms - Automated reporting, dashboards, and real-time analytics - ETL pipelines, data migration, and data transformation - Email sequences, notifications, and custom alerts - Automation Platforms: n8n, Make, Zapier, Power Automate, Workato 🔧 CRM & ERP Integrations: Seamless integration across your core business systems: - CRMs: Salesforce, HubSpot, Pipedrive, Zoho, Monday, GoHighLevel - ERP & Finance: NetSuite, SAP, QuickBooks, Xero, Stripe, Plaid - Custom APIs, webhooks, and secure middleware - Unified architectures connecting multiple platforms into one smooth system 💻 Full-Stack Development: Beyond AI, I build complete, production-ready applications: - Web Apps: React, Next.js, Node.js, Python (FastAPI, Django) - Mobile Apps: React Native, Flutter - Internal tools, admin panels, and custom dashboards - Scalable Databases: PostgreSQL, MongoDB, Redis 🛠️ Tech Stack (Highlights): - AI & LLMs: GPT-4o, Claude 3.5 Sonnet, Gemini Pro, Llama 3, DeepSeek, AWS Bedrock - Agent Frameworks: LangChain, LangGraph, LlamaIndex, CrewAI, AutoGen - Voice AI: ElevenLabs, Deepgram, Twilio, AssemblyAI - Vector DBs: Pinecone, Weaviate, Qdrant, Chroma, pgvector - Automation: n8n, Make, Zapier, Workato - Cloud & Infra: AWS, GCP, Azure, Docker 💡 Why Work With Me: ✔ I build production-ready systems, not simple prototypes ✔ Focus on ROI-driven AI solutions that reduce manual hours ✔ Experienced in handling complex, multi-system enterprise architectures ✔ Clean, scalable, and maintainable code with clear documentation ✔ Proactive communication and fast execution Let's discuss how advanced AI and automation can revolutionize your business operations. Send me a message or invite me to collaborate on your project!
Yogana V. has worked .
$15/hr
$1K+ earned
Available now
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I am a 𝐒𝐞𝐧𝐢𝐨𝐫 𝐆𝐈𝐒 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 with over 𝟓 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 building enterprise spatial solutions. I combine standard GIS analysis with modern web development to solve real business problems. I handle the full stack, from designing PostGIS databases and processing massive raster datasets to deploying interactive React dashboards and integrating LLMs for spatial decision support. 💻 𝐂𝐨𝐫𝐞 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤 • 𝐆𝐈𝐒 𝐁𝐚𝐜𝐤𝐞𝐧𝐝: PostgreSQL/PostGIS, Python (Django/FastAPI), GDAL, GeoPandas, Rasterio • 𝐖𝐞𝐛 𝐌𝐚𝐩𝐩𝐢𝐧𝐠: Mapbox GL JS, Leaflet, OpenLayers, GeoServer, Deck.gl • 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: React.js, TypeScript, Tailwind CSS • 𝐀𝐝𝐯𝐚𝐧𝐜𝐞𝐝 𝐀𝐧𝐚𝐥𝐲𝐬𝐢𝐬: Google Earth Engine, Spatial Optimization, GeoAI, LLM Integration • 𝐃𝐞𝐬𝐤𝐭𝐨𝐩: QGIS, ArcGIS Pro 👉 𝐂𝐥𝐢𝐞𝐧𝐭 𝐓𝐞𝐬𝐭𝐢𝐦𝐨𝐧𝐢𝐚𝐥𝐬 “Delivered a complex spatial interaction model that improved our site suitability analysis. A true expert in the field.” ~ Daniyal, Strategy Manager @ 𝐓𝐚𝐥𝐞𝐞𝐦𝐚𝐛𝐚𝐝 “An exceptional developer who combines geospatial theory with practical software engineering. Delivered exactly what we needed.” ~ Lee, Research Lead @ 𝐊𝐀𝐈𝐒𝐓 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 & 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 • 𝐋𝐋𝐌-𝐃𝐫𝐢𝐯𝐞𝐧 𝐒𝐩𝐚𝐭𝐢𝐚𝐥 𝐒𝐲𝐬𝐭𝐞𝐦𝐬: Built a conversational agent using Large Language Models to solve spatial optimization problems like p-median and p-center for research applications. • 𝐆𝐞𝐨𝐋𝐢𝐧𝐭 (𝐎𝐩𝐞𝐧 𝐒𝐨𝐮𝐫𝐜𝐞): Created and maintain a Python toolkit for automated geospatial data validation used by developers to fix topology errors. • 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞 𝐒𝐢𝐭𝐞 𝐒𝐮𝐢𝐭𝐚𝐛𝐢𝐥𝐢𝐭𝐲: Led GIS site suitability modeling for 𝐓𝐚𝐥𝐞𝐞𝐦𝐚𝐛𝐚𝐝 to optimize educational infrastructure investments. • 𝐂𝐮𝐬𝐭𝐨𝐦 𝐖𝐞𝐛 𝐆𝐈𝐒 𝐃𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝𝐬: Delivered interactive map interfaces using React and Mapbox GL that handle large vector datasets with sub-second rendering. 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐒𝐞𝐫𝐯𝐞𝐝 • Urban Planning & Smart Cities • Logistics & Supply Chain • EdTech & Social Impact • Environmental Monitoring • Real Estate Tech • Public Sector 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐇𝐢𝐫𝐞 𝐌𝐞 ✔ 𝟓+ 𝐘𝐞𝐚𝐫𝐬 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞: Strong track record in both academic research and commercial applications. ✔ 𝐅𝐮𝐥𝐥-𝐂𝐲𝐜𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: I handle everything from raw data processing to the final UI. ✔ 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐏𝐫𝐞𝐜𝐢𝐬𝐢𝐨𝐧: My background in geoinformatics ensures your spatial models are mathematically correct. Let’s hop on a call to discuss your spatial data needs. 𝐒𝐩𝐞𝐚𝐤 𝐬𝐨𝐨𝐧, Mahad Some of the industries and technology stacks I've worked with: PostGIS, PostgreSQL, Python, GeoPandas, Rasterio, Shapely, Fiona, GDAL, PyProj, GeoDjango, Django, FastAPI, Mapbox GL JS, Leaflet, OpenLayers, Deck.gl, GeoServer, React.js, TypeScript, Tailwind CSS, Mapbox SDK, Mapbox Studio, Vector Tiles, GeoJSON, Turf.js, GeoAI, LLM, Large Language Models, Machine Learning, Spatial Optimization, Google Earth Engine, Scikit-learn, Random Forest, Streamlit, QGIS, ArcGIS Pro, ArcGIS Online, ArcPy, Site Suitability, Location Intelligence, Spatial Analytics, Urban Planning, Real Estate, Flood Analysis, Disaster Management, Cartography, Geospatial Data Science, Spatial Data Engineering, Interactive Maps, Web GIS, Geospatial Dashboard, Data Visualization, ETL Pipelines, Topology Repair, Spatial Database Design, Remote Sensing.
Nicholas H.
$120/hr
100% Job Success
$20K+ earned
Available now
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Software engineer with 10+ years building production applications — now operating at the frontier of AI-assisted development. I help founders and teams go from idea to shipped product on timelines that used to be impossible. By pairing deep engineering fundamentals with modern AI tooling — Claude Code, Claude Design, and the broader AI stack — I compress months of work into weeks without cutting corners on quality or user experience. I've partnered with startups, established private companies, and government tech teams to launch new applications, modernize existing systems, and scale companies from inception to multi-million-dollar valuations — including one that surpassed $40M. My expertise spans cloud and serverless architecture, large-scale data analytics, AI/ML integration, and full-stack development. I've shipped and maintained full applications solo, and I've led teams — handling delegation, keeping people on task, and managing projects end to end across both offshore and onshore teams. I've also built and run my own production apps, so I bring real market and product perspective, not just code. If you have a vision, I can bring it to life — fast.
Nicholas H. has worked .
Faisal  H.
$17/hr
100% Job Success
$1K+ earned
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Finding a developer who actually speaks fluent software engineering and advanced GIS/Remote Sensing is rare. If that’s exactly what your project needs, let’s connect and build it. My expertise covers the entire lifecycle of spatial applications. Whether your project requires advanced spatial analysis, automated backend GIS data pipelines, seamless API and third-party integrations, or frontend interactive maps and dashboards, I build tailored solutions that work flawlessly. Core Job Titles & Roles: GIS Developer, Geospatial Engineer, Web GIS Developer, Spatial Data Scientist, Remote Sensing Specialist, GIS Analyst, Cartographer, Geospatial Developer, Python GIS Developer, Full Stack WebGIS Developer, Location Intelligence Specialist, Earth Observation Engineer, Spatial Database Administrator, Geoinformatics Expert. Web Mapping Libraries & Frontend: Leaflet, Leaflet.js, OpenLayers, Mapbox, Mapbox GL JS, MapLibre, MapLibre GL, CesiumJS, ArcGIS API for JavaScript, Turf.js, Tangram, D3.js, Deck.gl, kepler.gl, Vanilla JavaScript, TypeScript, HTML5 Canvas, SVG Mapping, Responsive Web Mapping, Interactive Maps, Vector Tiles, Raster Tiles, Map Styler. Geospatial Servers & Cloud Infrastructure: GeoServer, MapServer, Google Earth Engine (GEE), AWS Cloud GIS, Microsoft Planetary Computer, Sentinel Hub, Planet API, Copernicus Data Space Ecosystem, OpenStreetMap (OSM) API, CARTO, Mapbox Studio, Nextcloud GIS, Cloud Optimized GeoTIFF (COG) Hosting, STAC (SpatioTemporal Asset Catalog). Spatial Databases & Data Engineering: PostGIS, PostgreSQL, SpatiaLite, SQLite, Spatial Indexing (R-Tree, Quadtree), Geodatabase Design, ETL Pipelines, Data Scraping, Spatial Query Optimization, SQL Analytics, GeoPackage (GPKG), Shapefile (SHP), GeoJSON, TopoJSON, KML, KMZ, GML, WKT (Well-Known Text), WKB (Well-Known Binary), File Geodatabase (GDB). Python Geospatial Ecosystem & Data Science: Python GIS, GeoPandas, Rasterio, Shapely, GDAL, OGR, PyProj, Fiona, Xarray, NetCDF, HDF5, WhiteboxTools, ArcPy, QGIS Python API (PyQGIS), Jupyter Notebook, Anaconda, NumPy, SciPy, Pandas, Scikit-Learn, Machine Learning for GIS, Spatial Data Pipelines, FastAPI, uv package manager. Desktop GIS & Remote Sensing Software: QGIS, ArcGIS Pro, ArcMap, ArcGIS Enterprise, ERDAS Imagine, ENVI, ESA SNAP, Global Mapper, Saga GIS, GRASS GIS, Trimble eCognition. Satellite Imagery & Data Products: Sentinel-2, Landsat 8, Landsat 9, Copernicus Data, MODIS, NAIP Imagery, DEM (Digital Elevation Model), DTM (Digital Terrain Model), DSM (Digital Surface Model), SRTM, LiDAR, Point Cloud Processing, Drone Imagery, UAV Photogrammetry, Multispectral Imagery, Hyperspectral Data. Spatial Analysis & Geoprocessing Techniques: Land Use Land Cover (LULC) Classification, Supervised Classification, Unsupervised Classification, Random Forest GIS, Support Vector Machine (SVM), Change Detection Analysis, NDVI (Normalized Difference Vegetation Index), NDWI, EVI, Hydrological Analysis, Watershed Delineation, Stream Order, Network Analysis, Routing Optimization, Isochrone Generation, Service Area Analysis, Proximity Analysis, Buffer Analysis, Overlay Analysis, Spatial Join, Suitability Modeling, Multi-Criteria Decision Analysis (MCDA), Site Selection, Hotspot Analysis (Getis-Ord Gi*), Spatial Autocorrelation, Kriging Interpolation, IDW (Inverse Distance Weighting), Geostatistics, Terrain Analysis, Slope, Aspect, Hillshade, Viewshed Analysis, Density Estimation (Kernel Density). Business Use Cases & Industries: Location Intelligence, Geomarketing, Real Estate Analytics, Property Technology (PropTech), Precision Agriculture, Turf Management, Drone Mapping Dashboards, Environmental Impact Assessment (EIA), Urban Planning, Smart Cities, Logistics and Supply Chain Tracking, Asset Management, Territory Mapping, Demographic Analysis, Risk Assessment, Climate Change Modeling, Natural Resource Management. Web Development & API Integration: REST APIs, Geospatial APIs, GraphQL, Node.js, Express.js, Fast API, Backend Data Pipelines, OGC Standards, WMS (Web Map Service), WFS (Web Feature Service), WCS (Web Coverage Service), WMTS (Web Map Tile Service), XYZ Tiles, TMS, MVT (Mapbox Vector Tiles), Cors Configuration, JSON/GeoJSON Parsing.
Art R.
$85/hr
100% Job Success
$70K+ earned
Offers consultations
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I’m a SaaS Developer and Full Stack Developer with a passion for creating scalable SaaS products, MVPs, and business applications that tackle real operational problems. For over 8 years, I’ve helped startups, founders, and businesses design, build, and scale software products ranging from early-stage MVPs to production-ready SaaS platforms used by real customers. My work combines strong full-stack development expertise with practical AI integration, allowing companies to automate workflows, improve user experiences, and create new revenue opportunities. As a SaaS Developer, I build systems designed for long-term growth rather than short-term prototypes. Every project is developed with scalability, maintainability, and business objectives in mind. Whether building a customer-facing SaaS platform, an internal business tool, or an AI-powered application, I focus on creating solutions that continue to deliver value as the business grows. As a Full Stack Developer, I take ownership of projects from frontend to backend. I build modern web applications using React, Next.js, Node.js, PostgreSQL, Firebase, and cloud infrastructure. This end-to-end ownership allows me to deliver consistent user experiences while ensuring backend systems remain secure, scalable, and easy to maintain. A significant part of my work involves helping businesses launch MVPs quickly while establishing a solid technical foundation for future development. Rather than building throwaway prototypes, I focus on creating MVPs that can evolve into successful long-term SaaS products. AI integration has become a core part of many projects I deliver. I regularly implement AI-powered features using OpenAI and modern LLM technologies, including: - AI assistants and chat interfaces - Workflow automation systems - Intelligent content generation - AI-powered search and recommendations - Real-time voice and conversational applications - Custom AI features embedded directly into SaaS products As a Backend Developer, I design APIs, databases, integrations, and automation workflows that support complex business requirements. I frequently build systems that connect multiple services and automate repetitive processes, helping companies reduce manual work and improve operational efficiency. Many of the SaaS platforms and business applications I develop include: - Multi-role dashboards and administration panels - Customer portals and self-service platforms - Subscription and payment systems - Internal business tools and workflow automation - CRM and third-party service integrations - Maps, location, and geospatial applications - Reporting and analytics dashboards Clients typically work with me when they need: - SaaS Developer who understands both product and technology - Full Stack Developer who can own the entire application - AI Developer who can integrate OpenAI and LLM technologies into existing or new products - build MVPs without sacrificing future scalability - technical partner who communicates clearly and focuses on business outcomes My primary technology stack: React.js, Next.js, Node.js, TS, PostgreSQL, Firebase, OpenAI API, AWS/Vercel, REST APIs, WebSockets. Clients usually come to me when they need someone who can take ownership of a project from start to finish, communicate clearly, and think beyond just writing code. Whether it's building a new SaaS product, adding AI functionality, or improving an existing platform, I focus on creating solutions that are reliable, maintainable, and aligned with business goals. I enjoy working with founders, startups, and growing businesses that need a technical partner they can rely on for the long term. If you're looking for someone to help build, launch, or scale your next SaaS product, I'd be happy to chat. 👨‍💻 Working from a Home Office :)
Aleksandar T.
$30/hr
100% Job Success
$100K+ earned
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Hello! I'm Aleksandar, MSc in Geodesy and Geomatics with 4+ years of experience. My expertise lies in GIS Development, Spatial Data Analysis (vector and raster data), Data visualization, Implementation, Remote sensing, Aerophotogrammetry, etc. Also, I am starting to work in Computer Vision with Areal Photography on automatic object detection and automatic mapping. I am looking to build a strong career on Upwork and gain experience in online business. I am always working on improving all my skills in order to provide the best service to my clients. Additionally, I am known as responsible, precise, well-organized, eager to gain knowledge, and unafraid of challenges. Tools I use and am completely familiar with: - QGIS, ArcGIS - PostgreSQL/PostGIS, MySQL, - Python, Geo Python (Geopandas, Shapely, etc.) - GeoServer, - Agisoft Metashape, - WebODM - Feature Manipulation Engine (FME), - AutoCAD Civil 3D, - JAG3D (Deformation analysis and network adjustment). - Git/GitHub - Yolo, OpenCV - ML, Deep Learning, - Linux.
Aleksandar T. has worked .
Manjinder S.
$25/hr
98% Job Success
$100K+ earned
Available now
Offers consultations
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Hi, I’m Manjinder - a Certified Senior Web & Mobile App Developer with 10+ years of experience delivering 100+ apps used daily by thousands of users. I specialize in performance optimization, secure backend systems, and responsive, mobile-first UI/UX, ensuring your platform is fast, reliable, and future-ready. ✅ 𝗛𝗼𝘄 𝗜 𝗔𝗱𝗱 𝗩𝗮𝗹𝘂𝗲: 𝗘𝗻𝗱-𝘁𝗼-𝗘𝗻𝗱 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: From MVPs and proof-of-concepts to full production releases. Covering frontend, backend, API design (REST / GraphQL), database architecture, cloud setup (AWS / GCP / Azure), and automated CI/CD pipelines. 𝗖𝗿𝗼𝘀𝘀-𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺 & 𝗡𝗮𝘁𝗶𝘃𝗲 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲: I build apps using React Native, Capacitor, Ionic etc., to deliver near-native performance, ensuring consistency across Android, iOS, and Web. 𝗥𝗲𝘀𝗽𝗼𝗻𝘀𝗶𝘃𝗲 & 𝗠𝗼𝗱𝗲𝗿𝗻 𝗨𝗜/𝗨𝗫 𝗗𝗲𝘀𝗶𝗴𝗻: Clean designs, prototyping with Figma / Sketch, mobile-first layouts, intuitive navigation, micro-interactions, and fast load times. Emphasis on usability, accessibility, and conversions. 𝗦𝗲𝗰𝘂𝗿𝗲 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 & 𝗗𝗮𝘁𝗮 𝗣𝗿𝗶𝘃𝗮𝗰𝘆: Implementation of secure authentication (OAuth, JWT), payment gateways (Stripe, Razorpay, PayPal), encryption, and compliance with best practices around data security. 𝗥𝗲𝗮𝗹-𝗧𝗶𝗺𝗲 & 𝗘𝗻𝗴𝗮𝗴𝗶𝗻𝗴 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀: Live updates, push notifications, chat/messaging, event streaming. Enhancing user engagement with real‐time experience. 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 & 𝗖𝗼𝗱𝗲 𝗤𝘂𝗮𝗹𝗶𝘁𝘆: Modular, microservices when needed; clean, maintainable code; version control via Git; testing & QA; DevOps culture; automated builds and deployments. 𝗘-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲, 𝗦𝗮𝗮𝗦 & 𝗠𝗮𝗿𝗸𝗲𝘁𝗽𝗹𝗮𝗰𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: From shopping platforms to subscription models, onboarding workflows, dynamic pricing, inventory sync, user billing, subscription billing systems, etc. 💬 𝗖𝗹𝗶𝗲𝗻𝘁 𝗧𝗲𝘀𝘁𝗶𝗺𝗼𝗻𝗶𝗮𝗹𝘀 “Manjinder built a complex SaaS platform with flawless backend APIs and smooth frontend. Delivery was fast and communication excellent.” “With his scalable architecture, our platform now handles thousands of users seamlessly. His approach to integrations & performance is top-notch.” “He delivered our mobile & web apps with clean UI/UX, on time, and ensured flawless cross-device performance. Highly recommended!” 🏆 𝗣𝗿𝗼𝗳𝗶𝗹𝗲 𝗛𝗶𝗴𝗵𝗹𝗶𝗴𝗵𝘁𝘀 & 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸: 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲: 10+ years delivering production-grade web & mobile apps 𝗧𝘆𝗽𝗲𝘀 𝗼𝗳 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀: SaaS, FinTech, EdTech, Marketplace, E-commerce, On-demand apps 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸: • Frontend/Mobile: React, React Native, Vue.js, Next.js, Ionic, Capacitor • Backend: Node.js, NestJS, Express, PHP/Laravel • Databases: PostgreSQL, MySQL, MongoDB, Firebase • Cloud / DevOps: AWS / Google Cloud, Docker, Kubernetes, CI/CD with GitHub Actions & Jenkins • Design & Prototyping: Figma / Sketch / Adobe XD 𝗔𝗱𝗱𝗶𝘁𝗶𝗼𝗻𝗮𝗹 𝗦𝗸𝗶𝗹𝗹𝘀: Real-time APIs, Push Notifications, AppsFlyer, Branch, OneSignal, Payment Gateway Integration, Security / OAuth, Performance Optimization, Responsive Design, Testing & Quality Assurance 📩 Let’s Build Your Platform Have a web or mobile project in mind? Reach out for a free consultation. I deliver scalable, secure, high-performance solutions and can get started immediately.
Manjinder S. has worked .
KeyMouse IT Services
Associated with
KeyMouse IT Services
Amit J.
$35/hr
99% Job Success
$100K+ earned
Available now
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I help startups turn SaaS ideas into production-ready products using React, Next.js, Node.js, and AI integrations. Whether you're building an MVP, expanding an existing platform, or adding AI features, I focus on scalable architecture and reliable delivery. 𝗪𝗵𝗼 𝗜 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵: I partner with tech-driven businesses at every stage from seed-stage founders moving fast to enterprise engineering teams solving complex problems at scale. I have built a SaaS MVP that enabled the client to onboard early customers within weeks and validate the product before expanding. Also, I have developed a healthcare workflow platform that reduced manual administrative work through automation and EHR integrations. 1️⃣ 𝗦𝘁𝗮𝗿𝘁𝘂𝗽𝘀 & 𝗠𝗩𝗣 𝗕𝘂𝗶𝗹𝗱𝗲𝗿𝘀: Early-stage founders who need a clean, fast-launch product they actually own. I help validate ideas quickly without sacrificing architecture. 2️⃣ 𝗘𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲 𝗧𝗲𝗰𝗵 𝗧𝗲𝗮𝗺𝘀: Large organizations needing robust integrations, internal tooling, AI-powered workflows, or modernized legacy systems. 3️⃣ 𝗦𝗮𝗮𝗦 𝗖𝗼𝗺𝗽𝗮𝗻𝗶𝗲𝘀: B2B and B2C platforms from ideation to production — with billing, auth, onboarding, and analytics built in from day one. 4️⃣ 𝗙𝗶𝗻𝘁𝗲𝗰𝗵: Payment integrations (Stripe, Plaid), financial dashboards, and compliance-aware backends built for trust and reliability. 5️⃣ 𝗛𝗲𝗮𝗹𝘁𝗵𝘁𝗲𝗰𝗵: HIPAA-compliant systems, telemedicine platforms, and patient-facing digital tools that meet regulatory standards. 6️⃣ 𝗔𝗜-𝗙𝗶𝗿𝘀𝘁 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝘀: Companies building on top of LLMs — intelligent agents, copilots, document automation, and NLP workflows. 𝗛𝗲𝗿𝗲'𝘀 𝘄𝗵𝗮𝘁 𝗜 𝗼𝗳𝗳𝗲𝗿: 1️⃣ 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: End-to-end solutions with React, Angular, Node.js, and Python for high-performance web/mobile applications, (Enterprise/SMBs SaaS ideation to execution) 2️⃣ 𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻: Custom AI solutions using OpenAI, TensorFlow, and natural language processing to automate workflows and enhance user experiences. 3️⃣ 𝗚𝗼𝗼𝗴𝗹𝗲 𝗖𝗵𝗿𝗼𝗺𝗲 𝗘𝘅𝘁𝗲𝗻𝘀𝗶𝗼𝗻𝘀: Powerful browser tools that boost productivity, streamline processes, and integrate with your existing systems. 4️⃣ 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Secure and decentralized applications (dApps) leveraging Ethereum, Solidity, and smart contracts for transparency and trust. 5️⃣ 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: Cloud-ready applications built with AWS, Docker, and Kubernetes that grow with your business. 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: 🔹 Frontend: React, Next.js, Angular, Vue.js, Tailwind CSS 🔹 Mobile app: Flutter, React Native 🔹 Backend: Node.js, Python (Django/Flask), GraphQL 🔹 AI/ML: OpenAI API, TensorFlow, PyTorch, NLP 🔹 Google Chrome Extensions: Manifest V3, JavaScript, WebSockets 🔹 Blockchain: Ethereum, Solidity, Web3.js, Smart Contracts 🔹 Databases: MongoDB, PostgreSQL, Firebase 🔹 DevOps: AWS, Docker, CI/CD, Kubernetes 🔹 Testing: Jest, Cypress, Selenium 𝗣𝗿𝗼𝘃𝗲𝗻 𝗦𝘂𝗰𝗰𝗲𝘀𝘀𝗲𝘀: 🔹 Built AI-powered analytics dashboard resulting in 40% increased user engagement 🔹 Developed Google Chrome extension with 50,000+ active users for productivity automation 🔹 Created full-stack SaaS platform integrating OpenAI for intelligent document processing 🔹 Engineered real-time collaboration tools with WebSocket technology for enterprise clients 𝗪𝗼𝗿𝗸𝗶𝗻𝗴 𝗣𝗿𝗼𝗰𝗲𝘀𝘀: 1️⃣ 𝗗𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆: We'll discuss your vision, requirements, and technical needs. 2️⃣ 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Transparent progress tracking with regular demos and feedback cycles. 3️⃣ 𝗗𝗲𝗹𝗶𝘃𝗲𝗿𝘆: Complete handover with documentation, deployment, and ongoing support options. 𝗜𝗳 𝘆𝗼𝘂'𝗿𝗲 𝗹𝗼𝗼𝗸𝗶𝗻𝗴 𝗳𝗼𝗿 𝗮 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 𝘄𝗵𝗼 𝗰𝗮𝗻 𝘁𝗿𝗮𝗻𝘀𝗳𝗼𝗿𝗺 𝘆𝗼𝘂𝗿 𝘃𝗶𝘀𝗶𝗼𝗻 𝗶𝗻𝘁𝗼 𝗮 𝗿𝗲𝗮𝗹𝗶𝘁𝘆 𝘄𝗶𝘁𝗵 𝗰𝘂𝘁𝘁𝗶𝗻𝗴-𝗲𝗱𝗴𝗲 𝗔𝗜, 𝗲𝘅𝘁𝗲𝗻𝘀𝗶𝗼𝗻𝘀, 𝗮𝗻𝗱 𝗳𝘂𝗹𝗹-𝘀𝘁𝗮𝗰𝗸 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀—𝗹𝗲𝘁'𝘀 𝘀𝘁𝗮𝗿𝘁 𝘄𝗶𝘁𝗵 𝗮 𝗱𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆 𝗰𝗮𝗹𝗹 𝘁𝗼𝗱𝗮𝘆. TAGS: Full stack development, web development, software engineering, SaaS development, product development, scalable systems, API development, backend development, frontend development, MVP development, startup MVP, rapid prototyping, product launch, CTO as a service, AI development, AI agents, generative AI, LLM integration, OpenAI, LangChain, AI chatbots, automation tools, fintech development, payment integration, Stripe, Plaid, healthcare software, HIPAA compliance, telemedicine, mobile app development, React Native, Expo, Next.js, Node.js, FastAPI, Supabase, PostgreSQL, MongoDB, AWS, Docker, cloud deployment, Google Chrome extension development, automation systems, B2B platforms, B2C SaaS, agile development, end to end development, Application platform Development, Platform Development, App Development
OffBeat Software Solutions Pvt. Ltd.
Associated with
OffBeat Software Solutions Pvt. Ltd.
$1M+
earned