Hire the Best CTOs

Most $100K-$500K technology failures start with one bad decision — and by the time you realize it, the money's gone. The founder approves the dev agency. The CEO commits to the AI platform. 6-12 months later: project stalled, budget burned, nothing shipped. I help you see the fatal flaws BEFORE you commit the capital. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝗪𝗛𝗔𝗧 𝗜 𝗗𝗢: I provide Fractional CTO Advisory — independent technical validation for founders, investors, and CEOs making technology decisions that can't afford to fail. When you're about to commit $200K to a dev agency, hire your first CTO, or approve a legacy system replacement — you need someone who's seen it go wrong 50 times. I find the fatal flaws vendor pitches hide: • Architecture constraints that make roadmaps impossible • Development estimates 3x too optimistic (blowing your runway) • Integration assumptions that break under real conditions • Missing decision ownership letting projects drift 6+ months My rate is $250/hour, but most work is structured as ADVISORY PACKAGES: 𝟭. 𝗧𝗘𝗖𝗛𝗡𝗜𝗖𝗔𝗟 𝗗𝗨𝗘 𝗗𝗜𝗟𝗜𝗚𝗘𝗡𝗖𝗘 𝗦𝗣𝗥𝗜𝗡𝗧 Question: "Should we invest/hire this agency/approve this project?" Deliverable: Go/No-Go recommendation (3-5 days) At stake: $50K-$500K | Fee: $5K-$8K ROI: One avoided bad hire pays for 5+ years of diligence 𝟮. 𝗣𝗥𝗘-𝗙𝗨𝗡𝗗𝗥𝗔𝗜𝗦𝗜𝗡𝗚 𝗧𝗘𝗖𝗛 𝗣𝗔𝗖𝗞𝗔𝗚𝗘 Question: "How do we pass investor technical diligence?" Deliverable: Investor-ready docs + Q&A prep (1-2 weeks) At stake: $500K-$3M round | Fee: $4K-$7K ROI: Failed fundraising costs 3-6 months + founder credibility 𝟯. 𝗖𝗧𝗢 𝗔𝗗𝗩𝗜𝗦𝗢𝗥𝗬 𝗥𝗘𝗧𝗔𝗜𝗡𝗘𝗥 Question: "Who do we call for CTO-level judgment without a CTO?" Deliverable: On-call guidance (5-8 hours/month) At stake: $100K-$300K quarterly spend | Fee: $3K-$5K/month ROI: One bad vendor/architecture choice costs $150K+ to unwind 𝟰. 𝗖𝗨𝗦𝗧𝗢𝗠 𝗔𝗗𝗩𝗜𝗦𝗢𝗥𝗬 CTO transitions, dev agency evaluation, legacy modernization, AI feasibility — pricing based on complexity and capital at risk. 30-minute discovery call (free) to assess what you're protecting and recommend the right model. I do NOT provide hands-on dev, team management, or embedded roles (20+ hrs/week). I provide independent judgment preventing costly mistakes. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝗪𝗛𝗬 𝗧𝗛𝗜𝗦 𝗠𝗔𝗧𝗧𝗘𝗥𝗦: Technology failures hide in: • Dev proposals skipping hard integration questions • "Modern stack" pitches ignoring your operating constraints • AI demos working in labs but failing in production • Roadmaps assuming 5 things go perfectly — all 5 wrong 6-12 months post-contract: budget spent, runway shortened, asking "how did we miss this?" You missed it because the pitch looked credible, the agency spoke confidently, the contractor said "feasible" — and no one asked questions exposing fatal flaws BEFORE commitment. I ask those questions. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝗪𝗛𝗔𝗧 𝗜'𝗩𝗘 𝗣𝗥𝗘𝗩𝗘𝗡𝗧𝗘𝗗: 25+ years as CTO across defense, water infrastructure, energy, fintech, edtech — 14M+ endpoints, zero-downtime environments. Recent outcomes: • $250K dev contract avoided — assessment revealed team lacked integration experience (founder negotiated 40% better rate elsewhere) • $1.2M seed secured — package removed investor concerns (diligence passed first review, 30-day close vs 60-90) • $180K AI killed at 60 days — retainer ID'd misaligned case before $140K more spent • $320K migration, zero downtime — rollback protocol designed, 12% under budget • $150K saved on CTO hire — assessment caught skill gaps founder couldn't evaluate I understand startup urgency AND enterprise reliability — critical when burning $50K-$100K/month. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 𝗖𝗟𝗜𝗘𝗡𝗧𝗦: "Finding Daniel was hitting 'Triple 7's'! Grasped our concept immediately, provided extremely valuable insight. Tasked him with vetting dev teams — methodically found perfect fit. Without Dan, wouldn't have achieved our progress. Cannot recommend enough." — Steve, ZinZuu "In the first few minutes Daniel showed us he's a true professional and expert. He provided more value than we asked for and really simplified complex technical things in terms our whole team understood. Highly recommend for advice on development projects." — Robert, Private - Startup Initiative "Knew within minutes we found who could lead us to launch. Detail oriented, professional, responsive, excellent communication. Knowledgeable, experienced leader. Recommend without reservation." — Jen, GoShimmy "Hired for Windows app requiring deep IoT I/O understanding. Took loose specs, unraveled details, developed fast/reliable solution. Highly recommend as Sr. engineer for any magnitude." — Heath, Mueller Water ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Ready to de-risk your next decision? Request a 30-minute discovery call.

As a senior software engineer and architect, I have over 25 years experience partnering with businesses to transform their ideas into functional software products. I excel at software engineering, software architecture design and planning, leading development teams, writing technical specifications, and designing user interfaces and experiences. My work spans development of both enterprise and consumer applications with a focus on artificial intelligence, e-commerce and online payments, iOS and Android applications, API integrations, hardware integrations, server administration, automations, content management, web development, and SEO - all with an emphasis on exceptional design. I understand the importance of striking a balance between timeline, budget and feature set when designing and phasing a project, ensuring it works realistically within a business’ constraints. My communication style is clear, concise and transparent. When you hire me, you gain a team player that takes full ownership of his assignments and is guided by a relentless work ethic. I am proactive in looking ahead for potential issues and opportunities, and provide these insights as continuous feedback to stakeholders. While I am eager to discuss projects both large and small, simple and complex, covering a wide range of disciplines, below is a list of areas where I have deep expertise: Artificial Intelligence Extensive experience implementing AI technologies, including custom AI agents, conversational chatbots, recommendation engines, automated decision-making, predictive analytics, personalized user interactions, and content analysis/generation. Skilled in prompt engineering, model fine-tuning, and building hybrid systems combining multiple AI models with traditional software components. Proficient in integrating frontier models from OpenAI, Anthropic, Google, and Meta. I maintain expert knowledge of current and forthcoming offerings, enabling me to guide clients in selecting services that deliver optimal output at economical costs. API Integration Deep expertise building secure, efficient, and well-documented API integrations, including RESTful, GraphQL, legacy services (SOAP, XML-RPC), OAuth and other authentication protocols, and real-time data synchronization. My integration experience includes: Stripe, Plaid, Square, Twilio, SendGrid, Slack, Google/Bing/Meta Ads, Salesforce, HubSpot, Pipedrive, Google Docs/Sheets/Drive, Klaviyo, Mailchimp, Hootsuite, Monday.com, Quickbase, Teamwork, Asana, Quickbooks, NetSuite, Zendesk, Freshdesk, Intercom, DocuSign, Google Analytics, Mixpanel, Segment, Google Maps, Mapbox, and more. DevOps and Server Administration Twenty years experience in setup, migration, and maintenance of Unix/Linux hosting environments, including 15 years managing AWS infrastructure as well as Azure, Google Cloud, Heroku, Cloudflare, and others. Skilled in optimizing performance, ensuring availability, load balancing, security hardening, automated deployments, monitoring and alerting systems, and maintenance automation. Thrives during emergency situations and catastrophic failures under extreme pressure. E-commerce I’ve developed custom e-commerce offerings that have processed over a billion dollars in transactions. Functionality has included payment processing integrations, bi-directional third-party inventory management and POS integrations, fulfillment pipelines, subscription services, and high volume architectures processing thousands of orders per minute. Android & iOS Development Ten years of experience building native and non-native Android & iOS apps and supporting API suites with hundreds of App Store and Google Play submissions. Feature sets include e-commerce, push notifications, user authentication, location services, deep linking, barcode scanning, and Bluetooth low energy (BLE) beacons. Cannabis Tech Fourteen years experience developing software for cannabis dispensaries and MSOs, including online ordering, in-store kiosks, in-store TV menus, and Android/iOS apps. Expert knowledge integrating with cannabis POS platforms and APIs, including Dutchie POS (formerly LeafLogix) and Dutchie Plus, Jane POS and Jane Roots, Treez, BioTrack, Greenbits, Blaze, Flowhub and MJ Platform, as well as delivery logistics platforms like Onfleet and Detrack. Subject matter expert on Android and iOS apps for dispensaries, having submitted more dispensary apps than any other developer in the world. Fractional CTO & Consulting Apart from software development, I also offer fractional CTO services as well as consultation services to businesses during the idea conception, planning, and pre-production phases of their software projects. This can include product design, strategic planning, technical feasibility analysis, market research, risk assessment, budgeting and cost estimation, project scoping, workflow design, team structure and roles, RFP creation and management, and vendor selection and staffing.

With 20 years of experience across industries like logistics, finance, education, e-commerce, and telco, I bring deep technical expertise and leadership to every project. My career spans roles at global companies like Nespresso and multiple CTO positions in startups, where I’ve architected and scaled systems from MVP to production. As an UpWork Expert-Vetted freelancer (Top 1%), I’ve helped clients worldwide design, build, and optimize complex platforms — from mission-critical enterprise systems to lean MVPs. Clients trust me to step in at any stage: rescue high-stakes projects, design scalable architectures, or lead end-to-end product delivery. 💡 Selected Highlights - CTO, MarocSchoolBus.com – Built a real-time school bus tracking system with React, TypeScript, and AWS serverless, used by schools, drivers, and parents. - Technical Lead, ScienceBank.com (Harvard-affiliated) – Guided the architecture and delivery of a scientific peer review platform on AWS serverless and React. - Principal Engineer, LittleVista.ie – Managing full-stack development and DevOps for a childcare SaaS platform. - Enterprise Projects – Led Java migrations and system integrations for Nespresso, Ericsson, and other major organizations. 🔧 Technical Expertise Cloud & DevOps - AWS Certified (Solutions Architect, Developer, SysOps) - Serverless, Microservices, CI/CD pipelines, Infrastructure as Code Backend Architecture - Java (Oracle Master Certified Java EE Architect) - Node.js, REST APIs, event-driven systems, blockchain integration Frontend Engineering - ReactJS, Angular, TypeScript, Next.js, SPA development Startup Enablement - MVP design & execution - CTO-as-a-Service - Architecture consulting & scaling strategies 🎯 Whether you need a scalable architecture from scratch, an MVP to validate your vision, or expert guidance to optimize an existing system, I deliver solutions that are robust, future-proof, and tailored to your business goals.

19 year industry veteran Highlights: - Built fitness tech application (alone) to $350 million acquisition supporting over 600,000 customers with 10,000 concurrent and $5 million in monthly transactions. - BA Visual Arts - Built 3 development teams, 2 through Fortune 500 acquisition. - CNBC Power Lunch & Fox Business News Tech Take correspondent. Skills: Specialization in emergency response debugging, DevOps, AWS network infrastructure, nosql and relational databases, email, a Soc1, soc2, pci-dss, 21 cfr 11 (fda digital records), and programming languages. Languages: PHP, Python, TypeScript, Pinescript, Ruby on Rails, HTML 5, CSS3, RSS, JavaScript (Angular, ReactJS, NodeJs, Prototype, JQuery), .NET, Bash, CMD. Frameworks: Laravel, WordPress, Drupal, Typo3, Joomla, Oscommerce, Magento, Shopify, Django, Flask, ReactNative Stacks: LAMP, LEMP (nginx), WAMP, WIMP (IIS), XAMPP. Servers: Windows, Debian and RPM based linux distros (CentOS, RedHat, Ubuntu, Debian), SMTP and Exchange mail servers. Networking: AWS solutions architect (all things under a VPC and more). DevOps: Ansible, Jenkins, Gulp/Grant, Github, Gitlab, Bitbucket, JIRA. Databases: MySQL, PostgreSQL, MsSQL, MariaDB, MongoDB, ElasticSearch, DynamoDb API's: All things RESTful both OAuth 1 and 2.

I am a Senior AI and Full-Stack Engineer based in Germany with extensive experience in building intelligent, scalable, and automation-driven systems for startups, agencies, and enterprise teams. My work bridges the gap between traditional web development and the new generation of AI-powered software, where smart automation and reliable infrastructure come together to deliver real business impact. I help teams move from idea to prototype to production with clean code, measurable results, and a long-term focus on scalability and performance. What I Do Best: AI Integrations: OpenAI, Azure OpenAI, LangChain, RAG chatbots, embeddings, vector databases (Supabase, Pinecone, PGVector) Full-Stack Development: Next.js, React, Node.js, FastAPI, Django, Supabase, PostgreSQL, Prisma Automation and Low-Code: n8n, Zapier, Make, Airtable, Slack, Notion, HubSpot, Google Workspace Cloud and DevOps: AWS, Azure, Docker, Terraform, CI/CD, Kubernetes, Vercel, Netlify API Architecture: REST and GraphQL APIs, OAuth2, Webhooks, and system-to-system integrations How I Work: I design, build, and integrate everything from backend APIs and AI inference layers to responsive frontends. I focus on automation and reliability, helping clients reduce repetitive work and deploy faster. I work effectively both independently and as part of cross-functional teams, often serving as a bridge between data, product, and engineering groups. Every project includes documentation, CI/CD setup, and monitoring to ensure the product is ready for scale. Notable Projects: Designed and deployed a HIPAA-compliant Azure AI portal for a medical analytics firm. Built AI-driven knowledge chatbots with document ingestion using LangChain and Supabase. Developed eCommerce automation pipelines with Shopify, n8n, and Stape.io for order fulfillment and server-side tracking. Migrated a full ArcGIS Enterprise stack to AWS EC2, managing over 3 TB of data and multi-node services. Tech Philosophy: Great software is not only functional but also intuitive, automated, and maintainable. My goal is to help clients use AI and automation to streamline operations and scale faster, without compromising reliability or code quality. Let’s build something intelligent together.

Have a hard time managing the day-to-day operations of your business? I help entrepreneurs and startups strengthen their social media presence and provide them with administrative and marketing support. I provide social media and virtual assistant services, along with data management and AI workflow services. We work as a team to help you keep your business processes functioning while focusing on business growth. I am detail-oriented, supportive, and positive. I provide my clients with a variety of services that are all completed in a timely manner. My goal is to provide my clients with the support they need on an ongoing basis but for the specific services I am excited to work with you and support your business. 📱𝗦𝗼𝗰𝗶𝗮𝗹 𝗠𝗲𝗱𝗶𝗮 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 I help businesses maintain a consistent, professional, and engaging presence across social media platforms. 𝙎𝙚𝙧𝙫𝙞𝙘𝙚𝙨 𝙞𝙣𝙘𝙡𝙪𝙙𝙚: • Social Media Management • Content Strategy & Planning • Monthly Content Calendars • Content Scheduling • Content Creation • Instagram, Facebook & LinkedIn Management • TikTok & YouTube Shorts Support • Community Management • Audience Engagement • Caption Writing • Hashtag & Keyword Research • Canva Graphics • Short-Form Content Planning • Competitor Research • Performance Reporting • Brand Awareness & Organic Growth 💼𝗩𝗶𝗿𝘁𝘂𝗮𝗹 𝗔𝘀𝘀𝗶𝘀𝘁𝗮𝗻𝘁 & 𝗠𝗮𝗿𝗸𝗲𝘁𝗶𝗻𝗴 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 Reliable administrative support that helps your business run smoothly. 𝙎𝙚𝙧𝙫𝙞𝙘𝙚𝙨 𝙞𝙣𝙘𝙡𝙪𝙙𝙚: • Email Management • Calendar Management • Administrative Support • Customer Support • CRM Updates • Document & File Management • Online Research • Market & Competitor Research • Website Content Updates • Marketing Assistance • Project Coordination • Google Workspace • Microsoft Office 📊𝗗𝗮𝘁𝗮 𝗘𝗻𝘁𝗿𝘆 & 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 Accurate, organized, and detail-oriented administrative services. 𝙎𝙚𝙧𝙫𝙞𝙘𝙚𝙨 𝙞𝙣𝙘𝙡𝙪𝙙𝙚: • Data Entry • Data Collection • Data Cleaning • Database Management • CRM Management • Spreadsheet Management • PDF to Excel / Word Conversion • Data Verification • Web Research • Contact Research • Record Management 🤖𝗔𝗜-𝗣𝗼𝘄𝗲𝗿𝗲𝗱 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝘃𝗶𝘁𝘆 I use AI tools to improve efficiency while ensuring every deliverable is carefully reviewed and tailored to your business. 𝙄 𝙐𝙨𝙚 𝘼𝙄 𝙁𝙤𝙧: • Content Research • Content Ideas & Brainstorming • Caption Writing • Content Repurposing • Workflow Automation • Marketing Research • Document Summaries • Administrative Support 𝘼𝙄 𝙏𝙤𝙤𝙡𝙨: ✔ ChatGPT ✔ Claude ✔ Gemini ✔ Canva AI ✔ CapCut AI ✔ Notion AI ✔Grammarly AI ✔Perplexity AI AI can assist with creating repetitive tasks, however every content piece that is finalized will be manually checked for accuracy, quality and your brand's unique voice. 🛠️ 𝙏𝙤𝙤𝙡𝙨 & 𝙋𝙡𝙖𝙩𝙛𝙤𝙧𝙢𝙨: • Canva • CapCut • Meta Business Suite • Buffer • Later • Trello • Asana • Google Workspace • Microsoft Office • Google Sheets • Microsoft Excel • HubSpot • Zoho CRM • Salesforce • ChatGPT • Claude • Gemini 🌐𝙄𝙣𝙙𝙪𝙨𝙩𝙧𝙞𝙚𝙨: • Healthcare • Wellness • Real Estate • SaaS • Marketing Agencies • Restaurants • Hospitality • Local Businesses • Professional Services • Personal Brands 📂𝗣𝗼𝗿𝘁𝗳𝗼𝗹𝗶𝗼 & 𝗣𝗿𝗲𝘃𝗶𝗼𝘂𝘀 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲: I have spent a large portion of my career being contracted out by companies/agencies to manage their social media as a Social Media Manager. For that reason, I cannot take ownership or claim public links to social media accounts, content, or client lists due to company policy/confidentiality agreements/non-disclosure. 𝙈𝙮 𝙧𝙚𝙨𝙥𝙤𝙣𝙨𝙞𝙗𝙞𝙡𝙞𝙩𝙞𝙚𝙨 𝙞𝙣𝙘𝙡𝙪𝙙𝙚𝙙: • Social media management • Content planning and scheduling • Content creation • Community management • Audience engagement • Marketing support • Administrative assistance • CRM updates • Online research • Data management I will not violate my clients privacy but I am happy to speak at length about my experience, talk through my process, provide samples I created specifically for this portfolio, or produce a small paid test project. ⭐𝙒𝙝𝙮 𝙒𝙤𝙧𝙠 𝙒𝙞𝙩𝙝 𝙈𝙚? ✔ Strong communication ✔ Organized and detail-oriented ✔ Reliable and proactive ✔ Quick learner ✔ Comfortable working independently ✔ Able to manage multiple tasks efficiently ✔ Focused on long-term client relationships If you're looking for someone who can support your business with social media management, virtual assistance, data entry, research, and AI-powered administrative support, I'd love to discuss your project and see how I can contribute to your success.