TL;DR — Belov Digital builds custom web platforms for ambitious US companies: Next.js marketplaces, learning systems, SaaS dashboards, analytics platforms, B2B portals, and internal admin tools. Senior in-house engineering on Next.js, Remix, TypeScript, Postgres, Stripe, AWS. Custom platforms ship in 12–30 weeks from $50,000. Talk to a senior engineer on the first call.
Custom web platforms we build
- Two-sided marketplaces — vendor onboarding, listings management, search and filtering, payments with Stripe Connect, dispute resolution, payouts, ratings and reviews.
- Learning management systems (LMS) — course creation tools, video hosting and streaming, progress tracking, certificates, quizzes, instructor dashboards, multi-tenant institutions.
- SaaS dashboards and admin panels — multi-tenant data views, role-based access control, billing with Stripe Billing, audit logging, integrations with third-party APIs.
- Analytics platforms — custom data pipelines, interactive visualizations (Recharts, D3, Tremor), real-time updates via WebSockets, export to CSV/PDF, scheduled reports.
- B2B portals and partner platforms — deal pipelines, document workflows, SSO with corporate IdPs (Okta, Azure AD), white-label theming per partner.
- Internal admin tools — CRM-adjacent workflows, content moderation queues, customer support tools, operations dashboards, automation triggers.
- Headless commerce frontends — Next.js storefronts consuming WooCommerce, Shopify, or BigCommerce APIs — for brands needing app-grade UX over their existing e-commerce backend.
- Custom CMS frontends — headless WordPress, Sanity, or Contentful with a Next.js publication frontend. Best for performance-critical content sites.
Our web platform tech stack
- Frontend: Next.js 15+ (App Router), React 19, TypeScript, Tailwind CSS, shadcn/ui component library, Framer Motion for animations.
- Backend: Next.js server actions, Node.js (Hono, Fastify), Prisma or Drizzle ORM, PostgreSQL (Neon, Supabase, RDS), Redis for caching.
- Authentication: NextAuth.js / Auth.js, Clerk, Lucia, or custom SSO with Okta/Auth0 for enterprise.
- Payments: Stripe (Subscriptions, Connect, Billing, Tax), Paddle for SaaS-as-merchant-of-record, Lemonsqueezy.
- Hosting: Vercel (preferred for Next.js), Netlify, AWS (ECS, Lambda, Amplify), Cloudflare Workers for edge.
- Database: Postgres (Neon, Supabase, RDS Aurora), Redis, MongoDB where document model fits, ClickHouse for analytics workloads.
- Background jobs: Inngest, Trigger.dev, BullMQ + Redis, or AWS SQS for high-throughput queues.
- Search: Algolia, Meilisearch, Typesense, or Elasticsearch depending on volume and budget.
- Monitoring: Sentry for errors, Datadog or Axiom for logs/metrics, Vercel Analytics, PostHog for product analytics.
When to pick Belov Digital for a custom web platform
- You’ve outgrown no-code or template tools (Webflow, Bubble, Retool) and need real custom code.
- Your idea has complex backend logic — multi-tenant data, role-based permissions, custom billing, third-party integrations.
- You need senior engineering judgment, not just “developers” — architecture decisions that won’t bite you at scale.
- You want US-time-zone communication — Slack, real-time pairing, same-day responses on urgent items.
- You need a partner long-term — we’d rather build something that gets handed off to your team than maintain dependency forever.
How we engage
- Discovery (1–2 weeks, $5K–$15K) — workshops, technical architecture, scope, milestones. Output: detailed proposal, architecture diagram, sprint plan.
- MVP build (8–16 weeks, $50K–$150K) — focused build to first launchable version. Weekly demos, Linear/GitHub project management, continuous deploy to staging.
- Iteration and scale-up (ongoing, retainer) — monthly retainers ($8K–$40K/month) for feature work, performance, growth experiments.
- Hourly engagement — $80–150/hour based on seniority. For projects with shifting scope or shorter engagements.
Typical custom web platform costs in 2026
| Platform type | Typical cost | Timeline |
|---|---|---|
| SaaS dashboard / admin tool (MVP) | $50,000–$120,000 | 10–18 weeks |
| Two-sided marketplace (MVP) | $80,000–$200,000 | 14–24 weeks |
| Learning management system | $80,000–$250,000 | 16–30 weeks |
| Analytics / data platform | $60,000–$200,000 | 12–24 weeks |
| B2B portal with SSO | $50,000–$150,000 | 10–20 weeks |
| Headless commerce frontend (Next.js + WC / Shopify) | $50,000–$180,000 | 10–20 weeks |
| Ongoing dev retainer | $8,000–$40,000/month | continuous |
Frequently asked questions
Why Next.js and not another framework?
Next.js gives us the best balance of performance (edge SSR, ISR), DX (TypeScript-first, App Router, server components), ecosystem (huge npm), and hosting (Vercel = best DX, also runs on AWS). Remix is a great alternative we use when the team prefers it; we’d recommend whichever fits your team’s hiring strategy.
Will I own the codebase?
Yes, fully. Code lives in your GitHub from day one. We never ship to an obfuscated bundle or use proprietary lock-in tools. You can hand off to any other shop or in-house team.
Do you offer fixed-fee or hourly?
Both. Fixed-fee for well-scoped MVPs (clearer milestones), hourly for ongoing iteration and scope-uncertain work. Most clients start fixed-fee for MVP, move to monthly retainer post-launch.
Can you work with our existing engineering team?
Yes — common pattern. We embed alongside your in-house engineers for specific workstreams (auth rebuild, payments integration, performance sprint) and hand off when done. We work on your stack with your conventions, not ours.
Do you build mobile apps too?
Yes — native iOS (Swift), Android (Kotlin), and React Native cross-platform. See our mobile app development page for details.
Building a custom web platform? Get a scoped proposal from Belov Digital within 48 hours →