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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.

Bachelor of Engineering (B.Eng.) | Yuriy Fedkovych Chernivtsi National University, Ukraine I’m a .NET developer specializing in building reliable, production‑ready systems for e‑commerce, logistics, and workflow automation. I focus on backend engineering, API integrations, and deterministic data pipelines that keep operations stable and predictable. I build Windows services, DevExpress‑based desktop applications, API integrations, and SQL‑driven ingestion engines using C#, .NET, and SQL Server. My work includes deep integrations with Amazon SP‑API, Amazon Ads‑API, and other retail platform APIs, enabling automated workflows, real‑time data synchronization, and operational visibility across systems. I design systems that reduce manual work, improve operational reliability, and ensure data flows correctly between platforms. My approach is practical, engineering‑driven, and focused on long‑term maintainability — building solutions that behave consistently in real production environments.

𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗣𝗹𝘂𝘀 | 𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀 | 𝟭𝟯+ 𝗬𝗲𝗮𝗿𝘀 | 𝟴,𝟬𝟬𝟬+ 𝗨𝗽𝘄𝗼𝗿𝗸 𝗛𝗼𝘂𝗿𝘀 | $𝟮𝟬𝟬𝗞+ 𝗘𝗮𝗿𝗻𝗲𝗱 | I'm a senior .NET / C# developer and Azure cloud architect who builds and scales production systems for companies that can't afford downtime or rework — healthcare platforms, fintech products, e-commerce systems, and real estate/property-management software. If your project needs more than someone who writes code to spec — if you need someone who can architect the solution, own the delivery, and still be there for support six months later — that's the role I take on. WHAT I BUILD ──────────────────────── ✦ SaaS Platforms — multi-tenant, subscription-based .NET Core / Azure applications built to scale from a handful of users to enterprise volume ✦ Healthcare Systems — HIPAA-aware EHR/EMR platforms, HL7/FHIR integrations, and clinical workflow tools built to compliance standards ✦ Fintech & Payments — secure transaction processing, Stripe/PayPal integrations, reporting and reconciliation systems, PCI-conscious architecture ✦ E-Commerce Platforms — custom storefronts, order/inventory management, and integrations with payment gateways, CRMs, and ERPs ✦ Real Estate & Property Management Systems — listing platforms, tenant/lease management tools, and workflow automation for property teams ✦ AI-Powered Features — OpenAI/LLM integrations, intelligent document processing, and AI-assisted workflows added to existing .NET applications ✦ Legacy Modernization — turning outdated ASP.NET/VB.NET systems into maintainable, cloud-ready .NET 8 platforms without breaking what already works TECH STACK ──────────────────────── + Backend: C# · .NET 8 / .NET Core · ASP.NET Core · ASP.NET MVC · Web API · Entity Framework Core · LINQ · Blazor · SignalR · Microservices · REST & SOAP APIs + Frontend: Angular · React · TypeScript · JavaScript · HTML5 · CSS3 · Blazor UI + Cloud & DevOps: Microsoft Azure (App Services, Functions, AKS, Service Bus, Key Vault, Azure SQL) · AWS (EC2, Lambda, RDS, S3) · Azure DevOps · GitHub Actions · CI/CD · Docker · Kubernetes · Infrastructure as Code + Databases: SQL Server · PostgreSQL · Cosmos DB · MongoDB · Stored Procedures & Query Optimization for high-volume systems + Integrations: Stripe · PayPal · Twilio · SendGrid · OAuth 2.0 · HL7 · FHIR · CRM/ERP integrations HOW I WORK ──────────────────────── I stay involved from architecture through deployment — writing clean, documented, production-ready code, and communicating progress clearly at every step. I manage scope, timelines, and stakeholder expectations as carefully as I manage the codebase itself. Depending on what your project needs, I can work as a hands-on senior engineer, a solution architect, or a long-term technical lead. I'll tell you honestly, early, if I'm the right fit for what you're building. Send me your project scope and I'll respond within a few hours.

Mr. Robert Koernke is an Application Developer with 25 years of experience in the IT profession. Mr. Koernke's technical skills include ASP.NET for the Web, SQL Server, MySQL, Classic ASP, C#, VB.NET, HL7, C++, CSS, DHTML, XML, and HTML. He has recent experience in two industries that is shipping and medical. Mr. Koernke possesses excellent analytical, technical, and interpersonal skills making him a great asset. Healthcare Background With HL7, EMR, and DICOM Products / Shipping Background Also relevant skills: Rest API / JSon, Web Services, JQuery / Javascript Extensive Database Experience: Microsoft SQL, MySQL, MS Access

Experienced .NET developer with 30+ years of experience building and maintaining Windows and web business applications. Proficient in C#, .NET, ASP.NET (Web Forms), WinForms, SQL Server, REST APIs, and VB.NET, .NET Framework. Experienced with manufacturing, ERP, inventory, and other line-of-business systems.

Greetings! I have over 15 years of experience in software development. I have good hands-on experience working with.NET, ASP.NET Core, C#, Angular, and Azure. I have successfully developed and delivered a wide range of web applications. My positive feedback highlights my performance and is available on my profile. 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐩𝐫𝐨𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲: ◾ 𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠 𝐒𝐤𝐢𝐥𝐥𝐬: C#.NET Core, ASP.NET, MVC (Razor), Blazor, Web APIs, MEAN, MERN, PHP Core, PHP Laravel & CodeIgniter ◾ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬/𝐎𝐑𝐌 𝐓𝐨𝐨𝐥𝐬: MS Access, MS SQL Server, MySQL, NoSQL, Cosmos DB, MongoDB, SQL Azure, LINQ, Entity Framework ◾ 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐒𝐤𝐢𝐥𝐥𝐬: TypeScript, JavaScript, AJAX, JavaScript Libraries (Angular, React.js, Vue.js, Node.js, jQuery, etc.), HTML5, CSS3, Tailwind CSS, Bootstrap 𝐈 𝐡𝐚𝐯𝐞 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐝 𝐄𝐑𝐏 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 𝐟𝐨𝐫 𝐯𝐚𝐫𝐢𝐨𝐮𝐬 𝐢𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬, 𝐢𝐧𝐜𝐥𝐮𝐝𝐢𝐧𝐠: Engineering | Fintech (Financial Technology) | Healthcare | Real Estate| Education| Hotel Management | Airline | Voice Artists | Logistics | E-commerce 𝐈 𝐡𝐚𝐯𝐞 𝐜𝐨𝐦𝐩𝐫𝐞𝐡𝐞𝐧𝐬𝐢𝐯𝐞 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐢𝐧: ✔ Software development ✔ Application development ✔ Web designing ✔ Software quality assurance ✔ Database administration 𝐀𝐕𝐀𝐈𝐋𝐀𝐁𝐈𝐋𝐈𝐓𝐘 I am available 24/7 to cater to clients across different time zones. Communication can be conducted via writing, voice, or video calls as per your convenience. 𝐋𝐞𝐭'𝐬 𝐂𝐨𝐧𝐧𝐞𝐜𝐭! Your Project needs a smart approach and skilled work. Reach out today to setup a time to talk and start working together.