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DesignKey Studio

Stack & toolbox

Technologies and tools we build with. Chosen for longevity, not novelty.

Every entry below earned its place across real client projects: the stack your product is built from, the toolchain that ships it, and the payment and platform integrations we have delivered in production.
0+Technologies & Tools
0Categories
0+Projects Delivered
0+Years Experience

Frontend

6 technologies
React logo

React (opens the official site in a new tab)

Our default UI library. Mature ecosystem and hiring depth your future team will thank you for.

Next.js logo

Next.js (opens the official site in a new tab)

Our framework of choice for SEO-critical sites and SaaS frontends. This site runs on it.

Vue.js logo

Vue.js (opens the official site in a new tab)

Lighter alternative to React for teams that already know it or inherit it.

TypeScript logo

TypeScript (opens the official site in a new tab)

Every line of JavaScript we ship is typed. Fewer runtime surprises, safer refactors.

Tailwind CSS logo

Tailwind CSS (opens the official site in a new tab)

Utility-first styling that keeps design systems consistent and code reviews fast.

Angular logo

Angular (opens the official site in a new tab)

For enterprise codebases that standardized on it. We extend rather than rewrite.

Backend

6 technologies
Node.js logo

Node.js (opens the official site in a new tab)

One language across the stack. Powers most of our APIs and real-time services.

Python logo

Python (opens the official site in a new tab)

Our pick for data work, automation, and AI back ends.

Django logo

Django (opens the official site in a new tab)

Batteries-included Python framework when admin and auth need to exist on day one.

FastAPI logo

FastAPI (opens the official site in a new tab)

Fast, typed Python APIs. Our default when Python meets the web.

NestJS logo

NestJS (opens the official site in a new tab)

Structured Node.js for larger back ends where conventions keep teams aligned.

Express logo

Express (opens the official site in a new tab)

Minimal Node.js framework for lean services and internal APIs.

Mobile

4 technologies
React Native logo

React Native (opens the official site in a new tab)

One codebase for iOS and Android without giving up native feel. Our mobile default.

Flutter logo

Flutter (opens the official site in a new tab)

Cross-platform toolkit we reach for when pixel-perfect custom UI matters most.

Swift logo

Swift (opens the official site in a new tab)

Native iOS when the app demands platform-specific performance or APIs.

Kotlin logo

Kotlin (opens the official site in a new tab)

Native Android, same reasoning as Swift on iOS.

Databases

5 technologies
PostgreSQL logo

PostgreSQL (opens the official site in a new tab)

Our default database. Boring, battle-tested, and almost always the right answer.

MongoDB logo

MongoDB (opens the official site in a new tab)

Document store for flexible schemas and fast-moving product data.

MySQL logo

MySQL (opens the official site in a new tab)

Reliable relational workhorse, common in the inherited systems we extend.

Redis logo

Redis (opens the official site in a new tab)

Caching, queues, and sessions. The performance layer in most of our stacks.

Supabase logo

Supabase (opens the official site in a new tab)

Postgres plus auth, storage, and realtime out of the box. Great for fast MVPs.

Cloud & DevOps

10 technologies

Where your product runs and how it gets there: infrastructure, containers, and CI.

AWS logo

AWS (opens the official site in a new tab)

Our primary cloud for production workloads that need room to grow.

Google Cloud logo

Google Cloud (opens the official site in a new tab)

Strong data and AI services. Our pick when projects lean on both.

Azure logo

Azure (opens the official site in a new tab)

For organizations already on Microsoft. We deploy where your IT lives.

Vercel logo

Vercel (opens the official site in a new tab)

Preview deploys for every change and zero-config Next.js hosting. This site ships on it.

Netlify logo

Netlify (opens the official site in a new tab)

Simple, dependable hosting for static and Jamstack sites.

Docker logo

Docker (opens the official site in a new tab)

Reproducible environments, so the app your team inherits runs anywhere.

Kubernetes logo

Kubernetes (opens the official site in a new tab)

Container orchestration when the workload actually calls for it, and not before.

GitHub Actions logo

GitHub Actions (opens the official site in a new tab)

CI on every pull request: tests, lint, and deploys run before code merges.

Terraform logo

Terraform (opens the official site in a new tab)

Infrastructure as code, so environments are documented and rebuildable.

Jenkins logo

Jenkins (opens the official site in a new tab)

Legacy CI we still run and maintain inside enterprise environments.

AI & ML

9 technologies

Models and AI services we build production features with, from LLMs to voice and video.

OpenAI logo

OpenAI (opens the official site in a new tab)

GPT APIs for chat, extraction, and embeddings in production features.

LangChain logo

LangChain (opens the official site in a new tab)

Orchestration for multi-step LLM workflows and retrieval pipelines.

TensorFlow logo

TensorFlow (opens the official site in a new tab)

ML framework for custom model training and deployment at scale.

Hugging Face logo

Hugging Face (opens the official site in a new tab)

Open-source models and hosting when data cannot leave your infrastructure.

PyTorch logo

PyTorch (opens the official site in a new tab)

Research-grade ML framework behind most modern model work.

ElevenLabs logo

ElevenLabs (opens the official site in a new tab)

Production voice synthesis we have wired into client products and call flows.

Retell AI logo

Retell AI (opens the official site in a new tab)

AI voice agents for phone workflows. We have shipped Retell-powered call automation.

HeyGen logo

HeyGen (opens the official site in a new tab)

AI video avatars integrated for personalized outreach and product video at scale.

Tavus logo

Tavus (opens the official site in a new tab)

Conversational video AI we integrate when a product needs a face, not just a voice.

AI Tooling

4 technologies

AI accelerates our delivery, including custom MCP servers we build to wire AI into your systems. Senior engineers review everything it produces.

Claude Code logo

Claude Code (opens the official site in a new tab)

Agentic implementation under senior review. Weeks of boilerplate become days.

Claude Design logo

Claude Design (opens the official site in a new tab)

AI-first design exploration. We move from brief to high-fidelity concepts fast.

Cursor logo

Cursor (opens the official site in a new tab)

AI-first editor our engineers pair with for faster, safer refactors.

Model Context Protocol logo

Model Context Protocol (opens the official site in a new tab)

We build custom MCP servers that wire your systems straight into AI workflows.

Design

5 technologies

Where ideas become screens you can click before a line of code exists.

Adobe XD logo

Adobe XD (opens the official site in a new tab)

Legacy design files we can open, migrate, and modernize into Figma.

Sketch logo

Sketch (opens the official site in a new tab)

Mac design classic. We migrate Sketch libraries into living Figma systems.

Framer logo

Framer (opens the official site in a new tab)

Motion prototypes when a flow needs to be felt, not just seen.

Miro logo

Miro (opens the official site in a new tab)

Workshop boards for user flows, sitemaps, and discovery sessions.

No-Code

5 technologies

Validated fast or built to last: visual platforms we build on and migrate from.

Bubble (opens the official site in a new tab)

Full web apps without code. Right for validating a business model fast.

Webflow logo

Webflow (opens the official site in a new tab)

Production marketing sites your team can edit without a developer.

Wix logo

Wix (opens the official site in a new tab)

We build on it, extend it, and migrate off it when you outgrow it. This site started there.

Retool logo

Retool (opens the official site in a new tab)

Internal tools and admin panels in days instead of sprints.

Airtable logo

Airtable (opens the official site in a new tab)

Spreadsheet-database hybrid powering light operational workflows.

Integrations

7 technologies

Platforms we have connected products to: CRMs, project tools, accounting, and the automation glue between them.

n8n logo

n8n (opens the official site in a new tab)

Workflow automation connecting your product to the systems around it.

Zapier logo

Zapier (opens the official site in a new tab)

Glue automation between SaaS tools before custom integration is justified.

Zoho CRM logo

Zoho CRM (opens the official site in a new tab)

CRM integrations for lead routing and sales automation. We run our own business on Zoho.

Salesforce logo

Salesforce (opens the official site in a new tab)

Syncing product data with the CRM your sales team already lives in.

Monday.com logo

Monday.com (opens the official site in a new tab)

Workflow integrations that keep project boards in sync with your product.

ClickUp logo

ClickUp (opens the official site in a new tab)

Task and workflow integrations for teams that run operations in ClickUp.

QuickBooks logo

QuickBooks (opens the official site in a new tab)

Accounting integrations: invoices, payouts, and reconciliation flowing automatically.

Payments & POS

11 technologies

Payment rails and point-of-sale platforms we have integrated in production, from checkout to payout.

Stripe logo

Stripe (opens the official site in a new tab)

Our default payment rail: checkout, subscriptions, and Connect marketplace flows.

PayPal logo

PayPal (opens the official site in a new tab)

Wallet payments and payouts, often alongside a primary card processor.

Braintree logo

Braintree (opens the official site in a new tab)

PayPal-owned gateway for card, wallet, and recurring payments.

Authorize.net logo

Authorize.net (opens the official site in a new tab)

Long-standing gateway we integrate for businesses on legacy merchant accounts.

Payrix (opens the official site in a new tab)

Embedded payments for SaaS platforms, now Worldpay for Platforms.

Worldpay logo

Worldpay (opens the official site in a new tab)

Enterprise payment processing across cards, channels, and currencies.

Helcim logo

Helcim (opens the official site in a new tab)

Transparent interchange-plus processing we have integrated for SMB platforms.

Clover logo

Clover (opens the official site in a new tab)

POS hardware and APIs we have integrated for in-person retail flows.

SpotOn logo

SpotOn (opens the official site in a new tab)

Restaurant and retail POS integrations for ordering and loyalty.

Toast logo

Toast (opens the official site in a new tab)

Restaurant POS and Toast payments: online ordering, menus, and payouts.

Shopify logo

Shopify (opens the official site in a new tab)

Storefronts and Shopify Payments: custom apps, checkout extensions, and syncs.

Delivery

7 technologies

How work moves and how you stay in the loop: repos, reviews, and async collaboration.

GitHub logo

GitHub (opens the official site in a new tab)

Your organization owns the repository from day one. We work in it, not around it.

Storybook logo

Storybook (opens the official site in a new tab)

A living component library you can click through, mirroring production exactly.

Slack logo

Slack (opens the official site in a new tab)

A shared channel with every client. Questions answered in hours, not status calls.

Zoho One logo

Zoho One (opens the official site in a new tab)

Scheduling, invoicing, and CRM. The business side of the engagement runs here.

Google Workspace logo

Google Workspace (opens the official site in a new tab)

Docs, decks, and a shared Drive folder where every deliverable lands.

Fireflies logo

Fireflies (opens the official site in a new tab)

Transcribes our calls so decisions are searchable instead of remembered.

Loom logo

Loom (opens the official site in a new tab)

Async walkthrough videos for demos and reviews across time zones.

QA & Analytics

7 technologies

What we run before you see a build, and what we watch after you launch.

Playwright logo

Playwright (opens the official site in a new tab)

End-to-end tests on the critical paths: signup, checkout, and core flows.

Vitest logo

Vitest (opens the official site in a new tab)

Fast unit and component tests wired into CI from the first sprint.

Chromatic logo

Chromatic (opens the official site in a new tab)

Visual regression on the design system. Unintended UI changes get caught, not shipped.

Lighthouse logo

Lighthouse (opens the official site in a new tab)

Performance budgets and Core Web Vitals checks before and after launch.

Google Analytics 4 logo

Google Analytics 4 (opens the official site in a new tab)

Launch instrumentation wired before go-live, with dashboards you keep.

Ahrefs logo

Ahrefs (opens the official site in a new tab)

SEO monitoring: rankings, backlinks, and technical health after launch.

Vercel Observability logo

Vercel Observability (opens the official site in a new tab)

Errors and performance in production, watched from day one.

Our philosophy

How we choose technologies

A stack is a ten-year commitment made on day one. These four rules keep ours honest.

Boring where it counts

Databases, auth, and payments run on proven technology with a decade of production mileage. We save the experiments for places where failure is cheap.

One stack deep, not ten shallow

We would rather master the tools we ship every week than chase every new framework. Depth is what makes estimates accurate and bugs rare.

AI-accelerated, senior-reviewed

AI tooling speeds up the typing, not the thinking. Every line that ships is reviewed by a senior engineer who owns the outcome.

Exit-friendly by default

Your repository, your cloud accounts, your data. Popular technologies mean any competent team can take over without a rewrite.

Nothing behind the curtain

You see all of it

The toolchain is part of the deliverable, not our secret. Four standing commitments on every engagement.

The Figma file is yours

Shared from the first design review. Not exports, not screenshots: the working file.

The Storybook is browsable

Every component we build, clickable at a URL you can send to anyone on your team.

Your org owns the repository

Code lives in your GitHub organization from day one. Walking away is always possible.

The dashboards are your accounts

Analytics, monitoring, and cloud consoles are set up under your ownership, not ours.

Contact Us

Need Help Choosing the Right Tech Stack?

Tell us what you are building and we will recommend a stack sized for it, with the reasoning written down.

How does it work?

1

Our solution expert will analyze your requirements and get back to you within 1 business day.

2

If necessary, we can sign a mutual NDA and discuss the project in more detail during a call.

3

You'll receive an initial estimate and our suggestions for your project within 3-5 business days.