The company in one paragraph.
Stacklumen is a working software company. We build Webflow sites, ship custom applications, and develop tooling for ourselves and the agencies we partner with. The work below documents how we engage today, what we ship, and what's actively in development.
Four phases. Zero theater.
Every engagement runs through the same four phases. No bloated discovery decks, no surprise scope, no big-reveal launches.
- 01 / DiscoverScope and proposal in 72 hours.
A focused intro call, a written brief, and a fixed proposal back to you within three business days. No drawn-out sales cycles.
- 02 / DesignDesign in motion, not deliverables.
Static comps are dead weight. We design in Figma and prototype in code from week one — what you approve is what ships.
- 03 / BuildShip weekly. Demo in-context.
Weekly demos on a real staging URL. Feedback in the work, never slides about the work.
- 04 / LaunchHandover with full ownership.
Full code ownership, written documentation, and 60 days of post-launch support included on every project.
Starting an engagement.
The fastest way in is a short note via the support page. Tell us what you're building, who it's for, and any constraints. We'll respond within 24 hours.
What helps in your first message
- A one-line summary of what you're building or fixing
- Your timeline — soft target or hard deadline
- Budget range, even rough — saves a round of back-and-forth
- Links to existing site, Figma, or anything we should look at
Webflow development Live
Our core practice. Custom Webflow builds with hand-rolled GSAP animations, Lenis smooth scroll, Finsweet integrations, and embedded systems that stay under platform limits.
What we build
The toolchain we reach for
App development Live
For teams that need more than a marketing site. We build production applications — SaaS platforms, internal tools, marketplaces, client portals — on a modern TypeScript stack.
Our default stack
App engagements typically run 8–12 weeks and start at $24,000. We embed with your team, ship weekly, and hand over a fully owned codebase with documentation.
Agency partnerships Live
White-label development capacity for design agencies. Your brand, your client relationship — our engineering team behind the scenes.
How partnerships work
- Monthly retainer for a defined block of hours, starting at $6,000/mo
- Direct Slack channel between our team and yours
- NDA and white-label by default — we don't appear to your client
- Webflow, custom code, app development, or any mix
Performance standards.
We treat Core Web Vitals as a CI check, not an afterthought. Every site we ship hits these baselines on launch — and we re-audit at handover plus thirty days.
Accessibility standards.
Every site we ship targets WCAG 2.1 AA. Real keyboard navigation, real screen reader testing, real alt text. Not a checklist — a baseline.
- Semantic HTML before any ARIA
- Full keyboard navigation, including modal traps and skip links
- Real alt text — describe the image, not the file name
- Test with VoiceOver and a keyboard before shipping
Security standards.
Application work gets the same hygiene as production infrastructure. Secrets are never in client code, all input is validated server-side, and dependencies are audited monthly.
- Validate all user input server-side, every time
- Secrets in environment variables, never in client code
- Row-level security on Postgres tables, not just app-layer checks
- Audit dependencies monthly, patch critical CVEs immediately