Build scalable mobile, web, AI, and Firebase-powered software systems with senior US-based engineering expertise.
Specializing in mobile app development, Firebase systems, React Native, AI-integrated applications, startup MVP stabilization, and rebuilding software systems after complexity arrives.
Senior mobile app development for iOS, Android, React Native, Firebase, MVP stabilization, and scalable backend systems.
Cloud-native software systems, Firebase architecture, Node.js APIs, scalable backend infrastructure, and full-stack application platforms.
AI-assisted software systems, GPT integrations, agent stack evaluation, workflow automation, machine learning features, and operational tooling.
Specific senior-engineering services for buyers who already know the kind of help they need.
Swift, SwiftUI, Firebase, StoreKit, App Store launch paths, and rescue work for existing native iOS products.
View ServiceExpo, TypeScript, offline sync, native modules, backend integration, app rescue, and release support.
View ServiceLLM workflows, AI chatbots, retrieval, automation, internal tools, hosted vs self-hosted model evaluation, and production architecture.
View ServiceTechnical leadership for funded teams, active MVPs, vendor builds, codebase rescue, and implementation decisions.
View ServiceFHIR-aware workflow systems, surgical readiness, scheduling, portals, mobile apps, notifications, and integrations.
View ServiceSenior software consulting for NYC and NJ teams building apps, healthcare tools, AI features, and backend systems.
View ServiceiOS, Android, React Native, Unity, Firebase, BLE, WatchOS, app rebuilds, and launch-ready mobile execution.
View ServiceIn the AI era, software development increasingly involves stabilizing systems, untangling complexity, rebuilding fragile MVPs, improving scalability, and maintaining long-term system reliability.
Bill Vivino Technology helps startups and businesses move beyond prototypes into scalable, maintainable, production-ready software systems.
Fix unstable applications, reduce technical debt, and improve maintainability.
Rebuild and scale early-stage applications as real users, complexity, and operational demands increase.
Architecture decisions, Firebase systems, AI integrations, and long-term software strategy.
We understand your goals, timeline, and audience.
System architecture, technical planning, scalability strategy, and sprint execution.
Iterative software development with real demos, production feedback, and continuous system refinement.
Deployment, launch support, stabilization, scaling, and long-term technical guidance.
Bill Vivino Technology is engaged as an independent engineering company and technical partner—not as staff augmentation, a subordinate implementation resource, or personnel within a client’s organizational hierarchy.
We work directly with founders, CEOs, CTOs, architects, and internal engineering teams. Close technical coordination is encouraged, and we are happy to work with a client’s technical leadership. Our engagements do not create employee-style reporting relationships inside the client’s organization.
Our engagements generally follow one of two models:
We own the software-development function end to end, including architecture, technical planning, implementation strategy, delivery, and technical risk.
When a CTO or internal engineering organization owns the broader technical program, we take end-to-end ownership of clearly defined systems or initiatives, such as mobile architecture, cross-platform delivery, a core application, an integration, or a major product initiative.
Our strongest engagements give us clearly defined areas where we own technical decisions and outcomes from end to end. Depending on the client, that may include software architecture, implementation strategy, product engineering, mobile and web delivery, integrations, deployment, technical risk, or the complete software-development function.
We partner effectively with CTOs and internal engineering teams by taking full ownership of agreed systems or initiatives. The relationship remains a peer consulting relationship with clear responsibilities, authority, and accountability.
Material decisions involving scope, hours, responsibilities, authority, commercial terms, and continuation of the engagement remain principal-to-principal between Bill Vivino Technology and the client.
If an organization intends to retain all architecture, engineering direction, staffing authority, and technical ownership internally while using Bill Vivino Technology solely to execute implementation tasks, that is a different service model and not one we offer on a long-term basis.
We believe responsibility, authority, and accountability should remain aligned. Clients receive the most value from Bill Vivino Technology when we are trusted to own the technical outcomes for which we are engaged.
Looking for a technical partner who can own the software outcome?
Let’s Discuss the EngagementCommentary and analysis on AI-assisted development, startup software systems, app scalability, and modern engineering.
Why experienced software engineers still matter in the era of AI-assisted development and vibe coding.
Read ArticleExploring how AI coding tools behave more like fast junior developers than autonomous senior engineers.
Read ArticleWork directly with a senior software engineer on mobile apps, Firebase systems, AI-integrated products, and scalable software architecture.
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Verified reviews from real projects
“Amazing in communication.”
Client · iOS App (Swift & Firebase)
“Went above and beyond.”
Client · Firebase Integration Revamp
“It was great working with Bill! Very pleasant and knowledgeable.”
Client · Language Learning App