Senior engineering for SaaS founders. One human per relationship. AI amplification by default.

We’re the team founders bring in when they need someone who’ll be in the codebase - not just on the status call. Rails, React, mobile, and AR/VR engineering for SaaS founders, CTOs, and product teams worldwide.

Our founder Volodymyr Petlovy authored the V1s of MoveitPro (now 2,000+ companies, 40,000 daily users) and HappyCo (today 1.5M+ units under management) - working remotely from Ukraine, before VeViDi existed. Since 2019 we’ve scaled that practice into an 11+ engineer studio shipping Rails, React, mobile, and AR/VR products worldwide.

Most of our recent work ships under our clients’ brands, not ours - across regulated FinTech, enterprise facilities management with AR/VR, international consumer commerce, and EdTech. We collaborate directly with founders and CTOs (no account-management layers), AI-amplified delivery on every engagement, and grow engineers as part of how we work. Our identity isn’t tied to a language - it’s tied to shipping.

How we win against bodyshops and corporations: they have scale, marketing budgets, and brand recognition. We have memory, attention, real expertise on the keyboard, and the honesty to tell you when you don’t need us. Founders we shipped V1s with come back years later to scale or rebuild - that kind of relationship is the moat. Same instinct shows up on the side: our founder runs ADnull, a consumer DNS-level ad blocker on subscription. AI tooling makes it faster; senior judgment makes it right.

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Our services

From first commit to ongoing engineering - and rebuilding legacy products founders thought they were stuck with. Every service delivered with senior judgment and AI amplification. Running an inherited or aging Rails app? See our Rails app rescue and upgrades.

Legacy Modernization

Old Rails versions, inherited PHP monoliths, jQuery/Angular 1 frontends - we read the code at scale, backfill missing test coverage, and ship a modern, maintainable rebuild. AI-amplified delivery turns what used to be 6-month rewrites into weeks. 17+ years of Rails depth behind every architectural call.

Web Development

Ruby on Rails and modern frontends - clean, fast, maintainable web apps. 17+ years of Rails depth across SaaS, FinTech, EdTech, proptech, and e-commerce. We ship V1s with founders and scale them for the long haul.

Mobile Apps

Cross-platform React Native and native iOS/Android. Built for performance, usability, and the realities of long-lived consumer and enterprise products.

AR/VR & Unity

Microsoft HoloLens and Meta Quest applications for enterprise facilities management, training, and product visualization. Unity-based 3D experiences shipped under whitelabel for proptech and industrial clients.

AI / LLM Integration

OpenAI integration, model orchestration, RAG, multi-modal pipelines. Our founder built and ran a multi-modal LLM product (Resonans.ai) before ChatGPT supported file upload natively - real production experience, no marketing fluff.

Cloud & Infrastructure

AWS, Google Cloud, and Heroku in production every day. Containerized setups with Docker when it fits. Observability and security cleanup as part of the work, not a separate engagement.

API Development & Integration

Rails APIs powering mobile experiences and partner integrations. Stripe, Twilio, Sidekiq, Shopify, SAP, NetSuite, QuickBooks - secure, well-tested, built to last.

Project Rescue & Ongoing Engineering

Inherited a fragile codebase? We stabilize it, modernize it, and run it long-term. We took an inherited live fintech product from buggy to zero error alerts in months. Long engagements are the norm.