SaaS Marketplace
Multi-Vendor SaaS Marketplace Platform
Next.js 14 + Stripe Connect marketplace with custom subscription lifecycle and automated dunning. Zero to $4.2M GMV in six months across 200+ vendors.
$ cd /services/fullstack agent.ready · fullstack
Full-Stack Web
Development
> Products Launched : 10 +
> Uptime SLA : 99 .9%
> Faster Time-to-Market : 60 %
MVPs that don’t die in staging. Legacy codebases
we refactor in place without freezing your roadmap.
Next.js 15 with React 19 + Server Actions on top,
Node, Bun or Python underneath, Postgres on Neon
or Turso, OpenTelemetry traces from day one.
Boring where it matters, sharp where you’ll notice.
What we actually ship
Interfaces people can use one-handed on a tired Tuesday. APIs typed end-to-end (tRPC, Hono, GraphQL Yoga) so a rename in the backend breaks the build, not a live page. Infrastructure that autoscales on traffic, not on somebody forgetting to shut off a staging box.
We write semantic HTML, typed TypeScript, Drizzle or Prisma queries with EXPLAIN plans attached, and tests that cover the scenarios your support team actually emails about. Stack: Next.js 15 (App Router, Server Actions, Partial Prerendering) and React 19 on the front; Node, Bun or Python on the back; Postgres on Neon, Supabase or Turso plus Redis or Upstash in the middle. Cloud on whichever provider you’re already on (Vercel Fluid Compute, AWS, GCP, Cloudflare, Fly) — we don’t force migrations.
How we run a build
-
Discovery with teeth — User journeys, edge cases, acceptance criteria. If it’s not written down, it’s not in scope.
-
Architecture before code — One week of diagrams and honest trade-offs against your hiring plan and cloud budget. Pulumi or Terraform IaC scaffolded with the repo, SST as an alternative for serverless-first stacks.
-
Quality on commit — Tests (Vitest, Playwright), lint, type checks and a11y scans on every PR. OpenTelemetry traces and Sentry / Datadog / Honeycomb hooked in before launch, not the morning after.
-
Boring deploys — Automated CI/CD on GitHub Actions, canary releases, one-click rollback. If a deploy is tense, we've done something wrong.
What We Offer
React 19 & Next.js 15 Frontends
- + Server Actions, Partial Prerendering & RSC
- + Design systems on Tailwind, shadcn/ui & Radix
- + Accessibility & Core Web Vitals on real devices
APIs & Cloud Backends
- + Node, Bun, Python services with tRPC / Hono / GraphQL Yoga
- + Postgres on Neon, Supabase or Turso + Redis / Upstash
- + Drizzle / Prisma with EXPLAIN-checked queries and migrations
Auth, Payments
& Integrations
- + Better Auth, Clerk, WorkOS, Stack Auth, Auth0 — SSO & SAML
- + Stripe Connect, Smart Retries, Stripe Tax, Adaptive Pricing
- + Webhooks, OAuth & third-party SDK wiring
Legacy Rescue
& Modernisation
- + Monolith-to-modular strangler-fig refactors
- + React 16/17/18 → 19, Next.js 12/13/14 → 15 upgrades
- + Test-coverage backfill with no feature freeze
DevOps &
Reliability
- + GitHub Actions CI/CD, Terraform, Pulumi or SST IaC
- + OpenTelemetry → Sentry / Datadog / Honeycomb / Grafana
- + Vercel Fluid Compute, Cloudflare Workers, AWS Lambda autoscaling
How a build
actually ships
01 Discovery &
Discovery &
UX blueprint
Journeys, integrations, the unsexy non-functional requirements. Week one ends with a doc you could hand to anyone on your team.
02 Vertical slices &
Vertical slices &
weekly demos
Smallest shippable piece first, on staging, in front of real users. Every Friday. OpenTelemetry traces and Vitest / Playwright suites in from sprint one. No two-month silence followed by a big reveal.
03
Harden before launch —
Profile hot paths with the Performance API and Sentry, fix the top five, tighten access controls, rehearse the incident response. The calm before go-live is deliberate.
04 Cut over &
Cut over &
hand over
Docs your engineers can actually read, a runbook, a rollback plan, and someone from our team on-call for the first two weeks after launch.
Got something to build that needs to last more than a quarter? Send us the brief
A few case studies where this work shows up.
We’ve shipped this before.
Five builds, five different shapes — same team shipped all of them.
The questions people actually ask.
If your question isn’t here, email us. We read everything that comes in.
What stacks are you actually fast on?
Modern TypeScript: Next.js 15 and React 19 on the front, Node, Bun or Python on the back, Postgres on Neon / Supabase / Turso for data, Redis or Upstash for cache, Vercel Fluid Compute, Cloudflare Workers, AWS or GCP for hosting. We've done plenty of other stacks; these are the ones we move fastest on.
What we typically ship:- 1. Component libraries (shadcn/ui, Radix, Tailwind) with design QA
- 2. Full-stack web apps and internal tools
- 3. Typed APIs (tRPC, Hono, GraphQL Yoga) with real documentation
Can you take over an existing codebase?
Yes, and it’s usually the most interesting work we do. We start with an architecture and test-coverage audit, then refactor in small, reversible steps while keeping the release train running.
What we typically ship:- 1. Honest readiness assessment and a roadmap
- 2. Incremental refactor with no feature freeze
- 3. Pair programming with your engineers
How do you handle performance and SEO?
Rendering strategy matters more than micro-optimisations. We pick Server Components, Partial Prerendering, ISR or edge per route, cache where it helps, ship structured data, and measure on real devices via WebPageTest and Real User Monitoring — so pages are actually fast, not just fast in Lighthouse.
What we typically ship:- 1. Profiling reports with concrete numbers (LCP, INP, CLS)
- 2. Edge + CDN caching where it earns its keep
- 3. Accessible, semantic markup (and the a11y tests)
What does production support look like?
On-call rotation, an SLA you can point to, and release windows agreed with your team. When something goes wrong, you get one owner and a written postmortem — not a thread of finger-pointing.
What we typically ship:- 1. Monitoring and alerting that page the right person
- 2. Incident retros after every severity-1
- 3. Action items with owners, not just lessons learned
Do you work with in-house design teams?
Yes — we expect to. Figma handoffs, design tokens, motion specs, accessibility reviews; your designers stay in the loop, and we QA every screen with them before launch so nothing ships that you haven't looked at.
What we typically ship:- 1. A design system implementation that Figma can drive
- 2. Animation and interaction polish, not ornament
- 3. Design QA the week before go-live, with you
How do you structure pricing?
Milestone-based statements of work tied to concrete deliverables. You know what each payment buys, and you can stop whenever you want. We don’t do quarter-long retainers you can’t exit.
What we typically ship:- 1. Fixed-scope milestones for MVPs and rebuilds
- 2. Embedded team by the month, exit any time
- 3. Advisory retainers for teams that want a spot check