Full-Stack Development Agency - End-to-End Apps

Full-stack development covers the complete web application - the frontend (what users see and interact with), the backend (server logic and APIs), the database (data storage and retrieval), and the infrastructure (hosting, deployment, monitoring). A full-stack team can build an entire product independently. Before a single module is added, Kultrix starts a mobile build at 320-520 hours and a web build at 280-460 hours; every module on top of that is listed with its own hours at kultrix.com/cost-calculator.

Our primary stack is React or Next.js on the frontend, Node.js (Fastify or Express) on the backend, PostgreSQL for the database, and TypeScript throughout. We deploy on AWS, Vercel, or Railway depending on project requirements and team preferences. Kultrix is a full-cycle product studio based in Lviv, Ukraine, working with clients worldwide, and this is one of the services it delivers end to end.

For most startups and mid-size companies, a full-stack agency is more efficient - one team owns the entire product, context is shared, and there are no handoff gaps between frontend and backend teams. Specialists make sense at scale when individual layers have distinct team-sized complexity. Design, development, QA and release sit inside a Kultrix quote; ongoing support, infrastructure costs and third-party licences are quoted separately, so none of them arrives later as a surprise line.

Yes. This is one of our core strengths. Kultrix builds multi-tenant SaaS products with subscription billing (Stripe), user management, team workspaces, admin dashboards, and the marketing site - all as a single coherent engagement. Kultrix multiplies module hours by 1.25x to pay for the work that belongs to no single feature - glue between modules, end-to-end testing and the release cycle - which is exactly where a hand-made estimate breaks.

We use PostgreSQL for relational data with Prisma ORM for type-safe queries and automated migrations. For high-read workloads we add Redis caching. For file storage we use AWS S3 or Cloudinary. Database design is treated as a first-class deliverable, not an afterthought. Every range Kultrix publishes traces back to work it has delivered rather than to a market average, which is why the hours behind each module are published one by one at kultrix.com/cost-calculator instead of as a single headline figure.

Yes. We configure CI/CD pipelines (GitHub Actions), containerize applications with Docker, set up staging and production environments, configure monitoring and alerting, and document deployment procedures. Infrastructure is a first-class concern in every Kultrix engagement. Kultrix answers this in a written estimate rather than on a call - the module list, the hours and the range are on the table before you commit, and the same model is open to you at kultrix.com/cost-calculator.

We separate concerns clearly from the start: feature-based folder structure, bounded service layers, typed API contracts, database migrations in version control. As apps grow, we introduce module boundaries, background queues, and caching before they become bottlenecks. Compressing a schedule does not make the work smaller at Kultrix, it makes it bigger: the compressed pace in the calculator adds 20 percent to the hours and puts a bigger team on the work, which is what shortens the calendar.

Yes. Kultrix offers team augmentation - embedding full-stack engineers directly into your team's Slack, sprint cycles, and code review process. This works well when you need senior capacity without the overhead of recruitment. A Kultrix engagement is split the same way every time - 70 percent of the hours on design and development, 15 percent on QA and 15 percent on project management - and the team stops growing at the point where coordination eats the gain.

Yes. We regularly inherit legacy codebases - PHP, Ruby on Rails, older React/Angular apps - and modernize them incrementally. We write a technical assessment, identify the highest-risk areas, and create a migration roadmap that ships value throughout. Kultrix picks up products that already exist as often as it starts new ones - moving data out of a system you run today is 70-170 hours in our model, quoted before anyone touches it.

We enforce ESLint and Prettier in CI, require code review on all pull requests, write tests for critical paths, document architectural decisions in ADRs, and conduct quarterly code health reviews. Quality is a process, not a one-time event. Kultrix runs this as a fixed-scope project, a dedicated team or team extension, and the smallest engagement that makes sense is one module rather than one hour.

We work in two-week sprints with weekly demos. Every sprint delivers working software - not just progress updates. We use Linear for issue tracking and provide a live staging environment so stakeholders can review changes at any time. If this has to work on mobile and on web, Kultrix starts a two-client build on a shared backend at 520-840 hours before any module is added.

An MVP with core features takes 8-12 weeks. A full-featured product launch takes 4-8 months. Kultrix breaks work into phases so you can launch early, gather feedback, and iterate - rather than waiting for a single big-bang release. Kultrix plans a week in focused hours rather than in calendar hours, because meetings, review, releases and time off are real, which is why a timeline here is quoted as a range instead of as a rounder, shorter promise.