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$60/hr
$0 earned
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I build intelligent systems that actually solve real business problems — not just code.
I’m an AI Automation Engineer with hands-on experience in building production-ready platforms, AI workflows, and full-stack applications. I’ve worked on real-world automation systems using n8n, integrating APIs, emails, and internal tools to reduce manual effort and improve efficiency.
I’ve also developed complete products like a matrimonial platform with admin dashboard and mobile support, showcasing my ability to handle end-to-end development — from frontend to backend to deployment.
Here’s what I can help you with:
• AI automation workflows (n8n, APIs, integrations)
• LLM-powered applications and AI features
• Full-stack web and mobile app development
• Building scalable systems and admin dashboards
I focus on building solutions that are practical, scalable, and deliver real value.
If you’re looking for someone who can understand your problem and turn it into a working system — let’s connect.
$120/hr
100%
Job Success
$600K+ earned
Offers consultations
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David G.
has worked
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I am a freelance developer with 30+ years of experience in computer vision, 3D, computer graphics, HPC (multi-thread, GPGPU) and code optimization.
- performance optimization: I could help profile your C++/Python code and optimize it to get better performances. Using a better algorithm, better data structures, using all cores (Intel TBB, OpenMP), the GPU (CUDA, Metal, OpenCL, HIP/ROCm)
- macOS application: I could help get your code to run on macOS (universal binary Intel/AppleSilicon, application bundle, packaging, signing, notarization)
- Deep Learning: design and train DL models using PyTorch or TensorFlow, optimize/deploy for inference using TensorRT on Desktop/Jetson, or, CoreML, NCNN, OpenCV DNN, ... on other devices.
- Computer Vision: as an OpenCV contributor I could help design your computer vision system using OpenCV on the CPU and/or the GPU (OpenCL/CUDA).
$75/hr
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I ship production software in weeks, not quarters, because I build with AI instead of around it. 10+ years, IIT Ropar CSE. Head of Engineering at an AI startup. Before that: VP Technology at a top India D2C brand, 2M+ app installs, 350+ retail stores.
WHAT I ACTUALLY DO
I run engineering at an AI startup. Before that I was the first tech hire at a D2C brand that is now one of India's largest, where I built and ran the entire stack: React Native apps at 2M+ installs, an in-house POS live in 350+ retail stores, a custom Next.js website running headless on Shopify, internal tools used daily by 1,000+ employees, and the AWS infrastructure holding it all up at roughly $5K/month with near-zero downtime.
Alongside that, I take on a small number of outside projects where speed is the constraint, not headcount.
WHY I'M FASTER THAN A CHEAPER DEVELOPER
I rebuilt my own engineering workflow around AI agents: spec to PR, automated code review, test generation, migrations. It runs in production on a real codebase with a real team, not on a demo repo. What a 3-person agency quotes at 12 weeks, I scope at 4, and the architectural standard holds because the review layer is automated too.
That's the reason to hire me over someone billing a third of my rate. You're not buying my hours. You're buying a delivery pipeline that took years to build.
WHERE I'M USEFUL
0-to-1 product builds. You have a validated idea and need a real product, not a Figma file. I've done this from zero three times: an EdTech marketplace to 10K paid users, a services platform as first engineer, an omnichannel retail stack from scratch.
Fractional CTO and technical advisory. Architecture reviews, AWS cost audits, build-versus-buy calls, interviewing and hiring engineers, and second opinions on decisions you cannot un-make later. A few hours a month, not a full-time commitment. Useful if you have a team but no one senior enough to argue with.
E-commerce and retail systems. Shopify, headless Next.js websites, payment gateways, inventory sync, POS, order tracking. Shipped at scale across web, mobile and 350+ physical stores.
AI features inside real products. LLM integrations, RAG over your own data, agentic workflows, support and ops automation. Built to survive production, not a weekend demo.
Architecture and infrastructure. Monolith-to-services migration, event-driven systems, AWS cost reduction, CI/CD. I've cut real infra bills, not theoretical ones.
STACK
Node.js, Express, React, Next.js, React Native, PostgreSQL, Redis/Valkey, AWS (EC2, ECS, RDS, S3, CloudFront), Shopify, REST APIs, OpenAI and Anthropic APIs, vector DBs, CI/CD
HOW I WORK
Fixed-price by default. You pay for the outcome, not my hours, and you know the number before we start. I'll work hourly only when the scope genuinely can't be defined upfront. I take a limited number of engagements so the ones I take actually get finished. Async-first with one weekly call. You see working software from week one, not a status update.
I'll also tell you when your idea needs a smaller build than you asked for. That conversation has saved my clients more than any line of code I've written.
START HERE
Send me the problem, not the spec. I'll come back with an approach, a realistic timeline and a fixed price.
Still earlier than that, and not sure whether the thing is worth building at all? Say that instead. I'll give you a straight answer before either of us talks about money, and I'll tell you if you don't need me.
$75/hr
$0 earned
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I help businesses turn ideas and operational challenges into practical digital solutions.
My focus includes AI-powered applications, business automation, SaaS platforms, professional websites, web and mobile applications, CRM solutions, and system integrations.
My background combines entrepreneurship, business operations, management, and technology. This allows me to look beyond the technical side of a project and understand the business problem behind it whether the goal is generating more leads, automating repetitive processes, improving customer follow up, launching a new digital product, or building a complete online platform.
I can help with:
• AI-powered solutions and integrations
• SaaS and web application projects
• Professional business websites and e-commerce
• Mobile application projects
• CRM and business automation
• Workflow and system integrations
• Project planning and solution development
I work with clients from the initial idea and requirements through planning, implementation, testing, and launch. My goal is simple: understand what your business needs and deliver a practical solution that creates real value.
If you have an idea or a business challenge and are not sure about the best technical approach, I can help you define the solution and turn it into a working product.
United States
$100/hr
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I've shipped full-stack software across the SaaS, healthcare, and consumer space, including senior IC work at Highspot and leading a 12-person engineering team. These days I'm a startup CTO, so I think about more than just code: I care about shipping the right thing, on time, and in a way that won't break six months later.
What I can help with:
Full-stack web apps — React, TypeScript, Node.js, modern frontends + the APIs behind them
Backend & cloud — scalable services, database design, AWS, integrations
Specialized builds — IoT/embedded (ESP32, sensors, cellular), 3D/interactive web (Three.js, WebGL), React Native
Technical leadership — architecture reviews, code audits, mentoring, untangling a project that's gone sideways
I communicate clearly, hit deadlines, and treat your project like I'd treat my own. Whether you need a feature built, a prototype stood up, or a senior set of eyes on something complex, I'd be glad to help.
Let's talk about what you're building.
$80/hr
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​I am an AI Engineer, Data Scientist, and Web Developer skilled in building intelligent systems, data-driven applications, and responsive websites. I specialize in turning complex data into actionable insights and creating full-stack web solutions integrated with modern machine learning models.
​Core Expertise:
​AI & Data Science: Machine Learning, Data Analysis, Predictive Modeling, and Python.
​Web Development: Full-Stack Development, Front-End/Back-End Architecture, and Web Applications.
​Problem Solving: Designing scalable, high-performance tech solutions from concept to deployment
$120/hr
$0 earned
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NexaForge Software is a Pretoria-based software development company that designs and builds websites, mobile applications, desktop software and custom business systems. We help growing businesses turn ideas, inefficient workflows and digital opportunities into useful software that fits the way they work and can evolve with them.
OUR MISSION
Useful software. Clear purpose. To turn meaningful business problems and ambitious ideas into dependable digital products through clear thinking, thoughtful design and disciplined engineering.
OUR VISION
A trusted technology partner. To become a trusted South African technology partner for organisations that want practical, well-designed software built for long-term value.
CO-FOUNDER & DIRECTOR
Louis Johan Smit
Louis brings hands-on IT operations experience together with team leadership, client support and practical project coordination. His background spans escalation management, procedure review, workload planning, infrastructure support and the delivery of new technical projects.
CO-FOUNDER , DIRECTOR & HEAD DEVELOPER
Marcel De Lange
Marcel leads technical delivery at NexaForge. He holds a Bachelor of Information Technology from Belgium Campus iTversity and brings hands-on experience across full-stack development, business systems, databases, desktop applications, API integration and end-user technical support.
EDUCATION Bachelor of Information Technology Belgium Campus iTversity, completed in 2024.
Technical capability
FULL-STACK DEVELOPMENT React, JavaScript, PHP, Java, C#, Python, Node.js, HTML, CSS and REST APIs
DATA AND SYSTEMS MySQL, SQL Server, T-SQL, PostgreSQL, SQLite, database design and reporting
TOOLS AND DELIVERY Git, Visual Studio Code, Visual Studio, Windows 10/11, Microsoft 365 and system support
01 / CAPABILITY
Website development
High-performance business websites, e-commerce experiences and web platforms that clarify your offer, strengthen trust and turn attention into action.
Business websites / E-commerce / Web platforms
02 / CAPABILITY
Mobile app development
Purpose-built iOS, Android and cross-platform applications that deliver useful services, workflows and customer experiences on the devices people use every day.
iOS / Android / Cross-platform
03 / CAPABILITY
Desktop software development
Dependable Windows and macOS software that streamlines work, connects information and gives teams better tools for critical operations.
Windows / macOS / Business systems
04 / CAPABILITY
Custom software development
Tailored platforms, internal tools, workflow automation and integrations built around your organisation instead of the limits of disconnected off-the-shelf systems.
Internal tools / Automation / Integrations
Why NexaForge
Business before technology. We start with the problem and outcome, then choose technology that serves them.
One connected team. Strategy, experience design and engineering stay connected throughout delivery.
Clear communication. You see the thinking, progress and trade-offs while the product is being built.
Built for the long term. We build maintainable software and stay involved as it improves and grows.
Indonesia
$60/hr
$0 earned
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I'm a profesional web and mobile development.
Focus on reduce cost, increse revenue and enchance customer satisfaction.
Czech Republic
$60/hr
$0 earned
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As an Android Platform Developer with over 12 years of experience, I excel in creating robust and user-friendly applications that enhance the mobile experience. My background in Computer Science provides me with a solid foundation to leverage the latest technologies to deliver efficient solutions. I have successfully contributed to diverse projects, from innovative apps for new platforms to optimizing existing applications for performance and user engagement. My approach is collaborative and detail-oriented, ensuring seamless execution from concept to launch. If you're seeking a reliable developer who understands the nuances of the Android ecosystem and can transform your ideas into reality, I would love to connect and discuss your project needs.
$85/hr
100%
Job Success
$70K+ earned
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I provide complete software solutions to my clients. I can work with you even if all you have is an idea.
Programming Languages
- Ruby
- C/C++
- Python
- Golang
- Java
Web Development
- HTML/CSS/JavaScript
- NodeJs, AngularJs, JQuery, Bootstrap, RESTful API, MQTT
- Apache, PHP, Tomcat
Systems
- Linux
- Docker, Kubernetes
- MySQL, PostgreSQL, MongoDB
- AWS: IoT, SQS, EC2, RDBMS, Aurora Db
- Raspberry Pi, Arduino, AVR Microcontrollers, IoT
- RFIDs, RF Transceivers, ESP8266
- Android/iOS development
Certifications
- CompTIA Security+