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$95/hr
100%
Job Success
$300K+ earned
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WhatsApp Official API Developer | Meta Tech Provider | Agentic AI Expert
As a Software Engineer and Product Manager with 10+ years of experience, I specialize in building high-performance solutions inside the WhatsApp ecosystem. Recently, I led the engineering team at 360dialog, one of the largest WhatsApp Business Solution Providers (BSPs) globally, where I worked on production-scale WhatsApp implementations.
I also work closely with Meta teams and partners, including visits to Meta offices and participation in official events in São Paulo, Miami, and Montevideo, staying aligned with the platform’s latest capabilities and best practices.
Agentic AI + WhatsApp (Built for real operations)
WhatsApp is where business happens, but most “chatbots” stop at conversation. I focus on agentic systems: AI that can reliably take actions across your tools and workflows (CRM updates, approvals, scheduling, data capture), with the guardrails required for production use.
What I build (typical outcomes)
• Customer journeys: lead qualification, support automation, order tracking, appointment booking + reminders
• Internal workflows: onboarding, IT-service desk, approvals, secure document-data collection
• Integrations: CRMs, ERPs, custom APIs, designed for speed, observability, and scale
The “No Lock-In” Tech Stack
I provide the agility of modern AI-automation without locking you into a black box.
Modern infrastructure: AWS Lambda, Node.js, MongoDB Atlas
Full ownership: standard Node.js code that is exportable and remains your property
Compliance: designed for volume, GDPR-oriented, with multi-region deployment (EU-US) for data residency needs
AI-ready: integrate OpenAI or Claude via BYOK (Bring Your Own Key) for cost + data control
Global perspective & proven execution
My work is informed by the world’s most innovative tech hubs and events. I’ve participated in TechCrunch (California), SAP (Brazil), EXPO2020 (Dubai), Collision (Toronto), and Emerge Americas (Miami). In 2026, I was invited as a jury member at a Smart City hackathon in Valencia, Spain, where teams built solutions using the latest AI, OpenClaw-style agentic architectures, and WhatsApp as a primary channel.
Four years ago, I built a fully automated B2B startup and sold it for a 6-figure exit.
GoWaba (when speed matters)
GoWaba is the product foundation my team and I use to accelerate WhatsApp builds for global clients. It’s a WhatsApp-first, agentic-ready engine that bridges the gap between rigid DIY tools and expensive custom builds, reducing development time by ~40% while staying fully customizable.
Let’s build your vision
I offer a strategy session to review requirements, define the right architecture (including agentic AI where it makes sense), and map a clear timeline for your MVP or integration.
Contact me to discuss how we can scale your WhatsApp operations.
Fernando R.
has worked
.
Associated with
xenio
$100K+
earned
$65/hr
Available now
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I run User Group LLC, a solo software studio with two offerings: native macOS software and websites. Licensed and insured (GL $2M / E&O $1M), based in St. Petersburg, FL.
Native macOS software
Menu-bar tools, screen capture, developer utilities, and AI-powered desktop apps. SwiftUI, AppKit, ScreenCaptureKit. I've taken my own products through full Apple review cycles — codesigning, entitlements, Sparkle auto-updates, the rejections, the resubmissions, the works.
Shipped: DevCam (menubar screen recorder, App Store), Comprende (patent-pending VS Code extension with comprehension-gating for AI-generated code, live at comprende.dev).
Websites
Marketing sites, product sites, and small web apps. TypeScript, React, Next.js, Node, PostgreSQL, deployed on Cloudflare or Vercel. I build sites that load fast, look like the product they're selling, and don't fall over when traffic shows up.
Shipped: six client and freelance sites, plus my own product sites for Comprende, DevCam, Sysilo, and Schemap.
Recent client work
OpenClaw — a multi-model agent orchestrator with Slack and Gmail integration for a property management company. Delivered with a 5.0 review: "very communicative, very organized, went above and beyond."
How I work
Direct communication. No agency layer, no handoffs. I'm the person you hire and the person who builds it. I work AI-natively, which means I ship faster than developers who don't, and I've shipped my own products end-to-end — so I think about your project the way a founder would.
If you need a Mac app done right (App Store paperwork, codesigning, updates that actually work) or a website that looks and performs like the product behind it, let's talk.
$60/hr
89%
Job Success
$50K+ earned
Offers consultations
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If you need a secure Java Spring Boot application, PKI infrastructure, Digital Signature solution, HSM integration, or enterprise authentication system, you’re in the right place.
I am a PKI & Cryptography Engineer with 12+ years of experience building secure, scalable, and enterprise-grade applications using Java Spring Boot, Angular, ReactJS, Cryptography, Certificate Authorities (CA/RA), and Hardware Security Modules (HSMs).
I help organizations build secure enterprise systems, including digital signature platforms, PKI infrastructures, authentication systems, certificate lifecycle management solutions, secure APIs, and full-stack Java applications.
My focus is on security, scalability, performance, and long-term maintainability.
𝐖𝐡𝐚𝐭 𝐈 𝐂𝐚𝐧 𝐁𝐮𝐢𝐥𝐝 𝐟𝐨𝐫 𝐘𝐨𝐮
𝐏𝐊𝐈 & 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐜𝐚𝐭𝐞 𝐋𝐢𝐟𝐞𝐜𝐲𝐜𝐥𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭
I build secure PKI infrastructures, including Certificate Authorities (CA), Registration Authorities (RA), certificate issuance systems, revocation systems, and enterprise certificate lifecycle management platforms.
𝐃𝐢𝐠𝐢𝐭𝐚𝐥 𝐒𝐢𝐠𝐧𝐚𝐭𝐮𝐫𝐞 & 𝐞𝐒𝐢𝐠𝐧𝐚𝐭𝐮𝐫𝐞 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬
I develop secure digital signing solutions for PDF, XML, and enterprise documents using PAdES, CAdES, XAdES, and S/MIME standards.
𝐇𝐒𝐌 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 & 𝐒𝐞𝐜𝐮𝐫𝐞 𝐊𝐞𝐲 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭
I work with AWS CloudHSM, Thales HSM, and SafeNet HSM for secure key generation, storage, cryptographic operations, signing workflows, and enterprise-grade key management.
𝐉𝐚𝐯𝐚 𝐒𝐩𝐫𝐢𝐧𝐠 𝐁𝐨𝐨𝐭 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭
I build secure and scalable backend systems using Java Spring Boot, REST APIs, microservices architecture, secure authentication systems, and enterprise application development practices.
𝐉𝐚𝐯𝐚 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭
I develop full-stack enterprise applications using Java Spring Boot, Angular, and ReactJS for secure business platforms, admin portals, dashboards, workflow systems, and enterprise web applications.
𝐀𝐮𝐭𝐡𝐞𝐧𝐭𝐢𝐜𝐚𝐭𝐢𝐨𝐧 & 𝐈𝐝𝐞𝐧𝐭𝐢𝐭𝐲 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐒𝐲𝐬𝐭𝐞𝐦𝐬
I build authentication and authorization systems using Keycloak, SAML, OAuth2, SSO, Auth0, and WSO2 for secure enterprise access management.
𝐒𝐞𝐜𝐮𝐫𝐞 𝐀𝐏𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 & 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧
I create secure REST APIs with authentication, authorization, encryption, digital signatures, access control, and third-party system integrations.
𝐒𝐦𝐚𝐫𝐭 𝐂𝐚𝐫𝐝 & 𝐔𝐒𝐁 𝐓𝐨𝐤𝐞𝐧 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧
I integrate smart cards, USB tokens, cryptographic devices, and hardware-backed authentication systems for secure identity verification and signing solutions.
𝐂𝐥𝐨𝐮𝐝 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 & 𝐃𝐞𝐯𝐎𝐩𝐬
I work with AWS services, including EC2, S3, RDS, Route53, KMS, and CloudHSM, along with Docker, Jenkins, CI/CD pipelines, and secure deployment environments.
𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞
• Strong experience in enterprise security systems
• Deep specialization in PKI and Digital Signature solutions
• Secure and scalable application architecture
• Clear communication and structured development process
• Focus on long-term maintainability and reliability
• Experience with high-security enterprise environments
• Ability to handle both backend and frontend development
If you are looking for a reliable PKI & Digital Signature Engineer or Java Full-Stack Developer who can build secure, scalable, and enterprise-grade applications, send me a message or invite me to your project.
Sanawer S.
has worked
.
Associated with
DictaLabs
$1K+
earned
$100/hr
100%
Job Success
$50K+ earned
Offers consultations
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I help clients recover critical data, investigate cyber incidents, and understand what happened across computers, mobile devices, cloud accounts, email accounts, and online activity.
My work focuses on digital forensics, data recovery, cyber breach investigation, OSINT, malware-related analysis, and incident response. Clients usually come to me when they need clear answers after a hack, data loss, account compromise, suspicious activity, deleted files, insider risk, or an online investigation.
What I can help with:
• Data recovery from computers, drives, mobile devices, and storage media
• Digital forensic investigation of devices, files, accounts, logs, and user activity
• Cyber breach investigation to identify what happened, how it happened, and what evidence is available
• Email, cloud, and account compromise review
• Malware, suspicious file, and unauthorized access analysis
• OSINT and online identity investigation
• Clear technical reports that explain findings in plain language
• Practical next steps to secure systems and prevent repeat incidents
I approach every investigation carefully, ethically, and confidentially. My goal is to preserve evidence, recover what is recoverable, explain the facts clearly, and help you make informed decisions.
Tools I use:
I use tools such as Autopsy, FTK Imager, R-Studio, Disk Drill, R-Drive Image, dd, xmount, Volatility, Registry Explorer, RegRipper, Wireshark, tcpdump, Zeek, Magnet AXIOM, Cellebrite UFED, ADB, email header analysis tools, browser artifact tools, log analysis tools, file recovery tools, and Linux forensic tools.
I can also review disk images, memory dumps, mobile backups, cloud exports, email files, screenshots, logs, and other available evidence provided by the client.
Data recovery note:
Data recovery depends on the condition of the device, the storage type, the file system, and whether the data has been overwritten. For SSDs, recovery may be limited or impossible if TRIM or garbage collection has already cleared the deleted data. I always assess the situation first and explain what can realistically be recovered before proceeding.
I approach every investigation carefully, ethically, and confidentially. My goal is to preserve evidence, recover what can be recovered, explain the facts clearly, and help you make informed decisions.
I do not promise impossible recovery or unsupported conclusions. I provide clear findings based on the available evidence, the condition of the device or data, and the artifacts that can be verified.
If you need help understanding a digital incident, recovering important data, or reviewing evidence, I can help you move from uncertainty to clear findings.
$100/hr
100%
Job Success
$600K+ earned
Available now
Offers consultations
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Here for the picky ones who require A+ quality full-stack web, mobile, and e-commerce solutions.
I write clean, scalable Python and TypeScript code. I have an eye for great design, an extreme attention to detail, strong communication skills, and an efficient workflow. My results oriented nature does not allow me to stop work on your project until completion.
Favorite industries:
Fashion 🏄♂️ • e-Commerce 🛍 • Marketing 🗣 • Health 🧘♀️ • Travel 🛩 • Finance 📈
Experience includes (8+ years):
• Engineering: End-to-end architecture and development of full-stack apps from concept to production
• Product strategy: Defining product vision, roadmap planning, feature prioritization, and aligning technical execution with business goals
• UX/UI: Designing intuitive user journeys, translating design files into pixel perfect code
• Shopify: Storefront, theme, and app development
• Performance and scalability optimization: Bottleneck identification, resolving N+1 queries, caching, database indexing, materialization, and denormalizations
• Security: Role-based access controls and permission systems, JWT/OAuth implementations, input validation, rate limiting
• Stripe: Billing integrations, platform marketplace development with Stripe Connect
... and more
Primary tech stack:
React • React Native • Django • PostgreSQL • GraphQL • Stripe • Shopify • Docker • Fly .io • Nginx
Diversity Certifications:
• State of Massachusetts, MBE
• City of Boston, MBE
Phil F.
has worked
.
$60/hr
93%
Job Success
Available now
Offers consultations
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𝗔𝗩𝗔𝗜𝗟𝗔𝗕𝗟𝗘 𝗡𝗢𝗪 ✅ Message me and I'll reply within a few hours.
🏆 Top Rated Plus | 95% Job Success Score
🏆 59 contracts completed | $200K+ earned on Upwork
🏆 50+ software products shipped since 2017
🏆 6 production AI products built in the last 2 years
🏆 Anthropic Claude Certified
💎 𝗜 𝗔𝗥𝗖𝗛𝗜𝗧𝗘𝗖𝗧, 𝗕𝗨𝗜𝗟𝗗, 𝗔𝗡𝗗 𝗗𝗘𝗟𝗜𝗩𝗘𝗥 𝗣𝗥𝗢𝗗𝗨𝗖𝗧𝗜𝗢𝗡 𝗔𝗜 𝗣𝗥𝗢𝗗𝗨𝗖𝗧𝗦 𝗧𝗛𝗔𝗧 𝗦𝗢𝗟𝗩𝗘 𝗥𝗘𝗔𝗟 𝗕𝗨𝗦𝗜𝗡𝗘𝗦𝗦 𝗣𝗥𝗢𝗕𝗟𝗘𝗠𝗦. 💎
Most AI projects fail between the demo and production. I close that gap.
I'm Rehan, an AI Engineer, Product Owner, and AI Enablement specialist based in London. I started as a software developer, spent 10 years shipping 50+ products as a Senior Technical PM, and spent the last 2 years building and owning production AI systems end to end. I don't just build the agent. I identify where AI delivers real value, architect the solution, build it, ship it, and make sure your team actually adopts and uses it.
Engineering depth plus product ownership plus delivery track record. That is why my AI builds land in production when others don't.
𝗪𝗵𝗮𝘁 𝗜 𝗯𝘂𝗶𝗹𝗱 𝗮𝗻𝗱 𝗱𝗲𝗹𝗶𝘃𝗲𝗿:
✔️ 𝗖𝘂𝘀𝘁𝗼𝗺 𝗔𝗜 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: Purpose-built AI systems tailored to your business processes, data, and workflows. Not off-the-shelf. Built for your exact problem.
✔️ 𝗔𝗜 𝗠𝗩𝗣𝘀: Idea to production in weeks. Full-stack build, LLM integration, deployment, and iteration on live user feedback.
✔️ 𝗔𝗜 𝗔𝗴𝗲𝗻𝘁𝘀: Autonomous and multi-agent systems with tool calling, MCP integrations, and memory. Voice, chat, and workflow agents that run unattended.
✔️ 𝗔𝗜 𝗘𝗻𝗮𝗯𝗹𝗲𝗺𝗲𝗻𝘁: I assess your operations, identify where AI removes real friction, select the right tools, build the solution, and coach your team through adoption so the system actually gets used.
✔️ 𝗔𝗜 𝗣𝗿𝗼𝗱𝘂𝗰𝘁 𝗢𝘄𝗻𝗲𝗿𝘀𝗵𝗶𝗽: I own the roadmap, write the PRDs, define the MVP, prioritise the backlog, and keep engineering and stakeholders aligned from discovery through launch.
✔️ 𝗥𝗔𝗚 & 𝗟𝗟𝗠 𝗔𝗽𝗽𝘀: Retrieval pipelines, vector search, structured outputs, evals, and guardrails wired into apps your users actually trust.
✔️ 𝗪𝗼𝗿𝗸𝗳𝗹𝗼𝘄 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻: n8n, Make, and custom agentic pipelines that cut manual work from weeks to minutes.
✔️ 𝗩𝗼𝗶𝗰𝗲 𝗔𝗜: Real-time voice agents that qualify leads, book appointments, and handle inbound calls with zero human involvement.
✔️ 𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻: Drop AI into your existing stack. CRMs, ERPs, payroll, invoicing, support, and internal tools.
✔️ 𝗔𝗜 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁: AI-assisted PM systems and agentic workflows for standups, status reporting, and delivery ops.
𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗔𝗜 𝗜'𝘃𝗲 𝘀𝗵𝗶𝗽𝗽𝗲𝗱:
🌟 𝗖𝗶𝘃𝗲𝘁𝘁𝗮 𝗣𝗿𝗼𝗽𝗲𝗿𝘁𝘆 𝗚𝗿𝗼𝘂𝗽: Built an AI voice agent that qualifies inbound leads and books appointments automatically. Zero human involvement. Live in production.
🌟 𝗔𝗹𝗲𝘁𝗵𝗶𝗮 𝗔𝗜: Built autonomous AI agents and decentralised AI infrastructure. Multi-tenant deployment, agentic architecture at scale.
🌟 𝗔𝗜 𝗦𝗮𝗻𝘁𝗮 𝗖𝗵𝗮𝘁: Built a real-time conversational AI consumer app with sub-second response, child-safety guardrails on every turn, and parental oversight layer. Live on iOS and Android.
🌟 𝗧𝗿𝗶𝘃𝗮𝗻𝘁𝘂𝘀: Replaced a manual Excel-and-email payroll process with automation that cut cycles from weeks to days.
🌟 𝗶𝗤𝗛𝗥: Owned product direction and built core AI features for an AI-first HR SaaS platform against shifting, multi-stakeholder requirements.
🌟 𝗨𝗧𝗦𝗔: Built a multi-model LLM evaluation platform comparing GPT, Claude, and Gemini outputs for university healthcare research.
🌟 𝗔𝗯𝗲𝗲𝗿𝗮 𝗟𝗶𝗺𝗶𝘁𝗲𝗱: Proposed, built, and deployed two live AI systems for a London tech firm. Front-desk voice agent and QuickBooks invoice automation. Coached staff through full adoption.
🌟 𝗕𝗹𝗲𝘀𝘀𝗻: Built a faith-based creator SaaS platform from concept to launch with Sightengine AI content moderation.
𝗦𝘁𝗮𝗰𝗸 𝗜 𝗯𝘂𝗶𝗹𝗱 𝗼𝗻:
🌟 Languages: Python, TypeScript, JavaScript, SQL
🌟 AI/ML: LangChain, LlamaIndex, OpenAI SDK, Anthropic SDK, Hugging Face
🌟 LLMs: Claude, GPT, Gemini, Grok, DeepSeek
🌟 RAG & Data: Pinecone, Weaviate, pgvector, ChromaDB, embeddings, vector search
🌟 Agentic: Claude Code, MCP, Replit, Lovable, Cursor
🌟 Voice AI: Vapi, Bland, Twilio
🌟 Automation: n8n, Make, custom Python pipelines
🌟 Backend: FastAPI, Node.js, REST APIs, webhooks
🌟 Frontend: React, Next.js, Tailwind
🌟 Cloud & Infra: AWS, GCP, Docker, Vercel, Firebase
🌟 Databases: PostgreSQL, MongoDB, Redis, Supabase
🌟 Integrations: Stripe, Sendgrid, QuickBooks, ERPNext, HubSpot
🌟 PM Tools: ClickUp, Jira, Notion, GitHub, Figma, Linear
𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀: Anthropic Claude Certified | Scrum Master Certified (SMC) | PMEC | MSc Project Management | BSc Computer Science
Available up to 30 hrs/week. Flexible timezone.
What are you building? Send me a message and let's scope it.
Rehan A.
has worked
.
Croatia
$75/hr
100%
Job Success
$100K+ earned
Start of list.
End of list.
" Matej was great to work with. He fully understands the development cycle and how
to work with a team. When laying out tasks he easily understands what needs to be
accomplished and has great ideas for improvements and efficiency. "
Hello and Thank you for considering me for your contract.
I am a full stack developer, with more than 13 years of experience. I started in the Casino industry, and I grew to Senior Architect on multiplatform casino games and backend.
I have experience with both frontend and backend code architecture and my code is still working flawlessly after all these years.
When I code, there are a few things that I value the most:
1. Simplicity
2. Efficiency
3. Communication
I am able to quickly adapt to new environments, and new codebases.
When designing a system, all of the best practices are honored.
Testing, CLEAN architecture, understandable even for non technical persons.
My greatest skill is thinking many steps ahead. Like in chess, who is able to outthink his opponent wins.
In my case, and I guess that comes with experience, I predict future scenarios so your code is always ready to scale when the time comes.
.Net C#
Java Spring
Php Reactphp
Svelte
Flutter
Dart
Rive
iOS
Android
Node.js
microservices
Firebase
MySql
MongoDb
Angular
...
Looking forward to work together !
Matej
🌳🌲🌴
$100/hr
100%
Job Success
$100K+ earned
Available now
Start of list.
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🚀 Expert in Multiple Industries | Full-Stack Developer & Software Consultant | CTO
✅ High-Quality Work
✅ Cost-Efficient Services
✅ Fluent English Verified
✅ 8 Years Of Experience
✅ Long-term working relationship
I bring years of experience across a diverse range of industries, including:
🚗 Automotive
🛢️ Oil & Gas
🍽️ Restaurant & Hotel
🏅 Sports
✈️ Travel & Transportation
💰 Banking & Financial
🎓 Education
🏭 Manufacturing
🌐 Internet of Things (IoT)
🏥 Healthcare
⚡ Energy
📺 Media & Technology
Whether you're looking to streamline business operations, improve customer engagement, or create scalable software solutions, I offer expert-level development and consulting services tailored to your specific industry needs. My goal is to deliver innovative, high-performance applications that drive results and align with your business objectives.
Let’s connect and discuss how I can help bring your project to life! 🌟
I am a senior full-stack web developer with a track record of delivering large-scale high-performance products and I have professional experience in front-end and back-end development technologies.
Listed below are my tech expertise and skills:
✅ Frontend: AngularJS, Vue JS, WordPress, ReactJS/Redux, Bootstrap, JavaScript, TypeScript, jQuery, Ajax, HTML5, Material UI, TailwaindCSS.
✅ Backend: NodeJS, ExpressJS, PHP, Laravel, CakePHP, WordPress, Python, Django, Flask, RESTful API, GraphQL
✅ Mobile App: React-Native, Ionic, Flutter, Apache Cordova, IoT, Socket.io, iOS & Android.
✅ Database: MongoDB, PostgreSQL, MongoDB, MySQL.
✅ Designing: UI/UX, Photoshop, Adobe XD, Adobe Illustrator, Corel Draw.
✅ DevOps: AWS, GCP, ECS, ECR, Docker, Security, Pipelines, git, Cost reducing.
I can use project management tools like Asana | Jira | Trello | Sl@ck | BaseCamp etc.
Thanks a lot for visiting my profile.
Zaheet B.
has worked
.
United States
$120/hr
100%
Job Success
$20K+ earned
Offers consultations
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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
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$110/hr
100%
Job Success
$100K+ earned
Available now
Offers consultations
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I help founders and startups ship reliable AI MVPs and production systems fast, turning ideas into working products in weeks, not months.
As a Top Rated Plus Senior AI Engineer and Architect with 20+ years in software and 10+ years in production AI, I combine deep technical expertise with rapid execution. I founded an AI company in 2019 and have held senior engineering and occasional Fractional CTO roles. Clients hire me when they need a senior builder who can own the full cycle: architecture, fast prototyping, full-stack implementation, and production deployment.
What I deliver quickly and reliably:
Rapid AI MVPs & Prototypes: I use Codex, Grok, and other AI coding tools to accelerate development 100x while writing clean, maintainable code
Production-grade AI Agents & multi-agent systems (LangGraph, CrewAI, AutoGen, LangChain)
Advanced RAG systems and private knowledge bases
Full-stack AI applications (Next.js, React, Node.js/Python, TypeScript)
On-prem / local LLM deployments, GPU infrastructure, and cost-optimized scaling
Secure automation, retrieval systems, and legacy AI platform modernizations
Core stack: OpenAI, Anthropic, Grok, LlamaIndex, LangChain, Ollama, PostgreSQL + vector databases, Docker, Tauri, Rust, and all major cloud platforms.
I’m the go-to senior engineer for founders and small teams who want speed without compromising quality. I act as technical lead or fractional CTO when needed, delivering systems that are secure, scalable, low-latency, and easy to maintain after launch. My focus is always on avoiding technical debt and building solutions that survive real users and growth.
If you need a senior AI architect who can move fast, prototype quickly, and deliver production-ready results with long-term ownership, I’m a great fit. Let’s build something that actually works and lasts.
Samuel P.
has worked
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