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Kultrix frontend developers combine strong React and TypeScript fundamentals with a designer's eye for detail. They build responsive, accessible interfaces that perform brilliantly across all devices.
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Senior Engineers Only
7+ Years Experience
NDA
EXPERTISE
WHAT WE DO
We build single-page applications with clean component architecture, typed state management, and scalable folder structures that stay maintainable as the codebase grows.
We build Next.js applications with SSG, ISR, and App Router, optimised for PageSpeed, SEO, and Core Web Vitals from the very first deploy.
We design and build reusable component systems with Storybook documentation, design tokens, and prop APIs that let product teams move fast without breaking things.
We analyse bundle size, lazy loading, code splitting, image delivery, and render performance to eliminate jank and hit 90+ Lighthouse scores.
We implement WCAG 2.2 AA compliance through semantic HTML, aria patterns, keyboard navigation, focus management, and automated axe-core checks in CI.
We set up unit tests with Jest, component tests with React Testing Library, and end-to-end tests with Playwright to catch regressions before they reach production.
WHO THIS IS FOR
Whether you are a startup or enterprise, we have the right engagement for you.
Fast-track your MVP with senior talent. Launch on time and within budget.
Improve performance, UX, and features of your existing product with expert help.
Augment your team with senior specialists to accelerate feature delivery.
OUR APPROACH
Choose the cooperation format that best fits your business goals and development velocity.
Fast launch to test your idea and gather user feedback with minimal investment.
What's included
Timeline Typically 9-16 weeks
Complete cycle from initial strategy and design to final launch.
What's included
Timeline Typically 20-40 weeks
Scale your team with expert developers to accelerate development.
What's included
Timeline Flexible / Long-term
OUR HIRING PROCESS
Tell us about your project goals, timeline, and team needs. We'll set up a free consultation to dive deeper into your requirements.
Based on your project, we recommend the ideal team structure, engagement model, and technology approach - tailored to your goals and budget.
We handpick the best-fit professionals from our senior talent pool. You'll meet them, review their experience, and give the green light.
Your team onboards within 48 hours. We align on workflows, set up communication, and start delivering results from week one.
As your project evolves, we scale your team, add new specialists, or adjust scope - all within your existing partnership.
INDUSTRIES
Our Frontend Developer professionals build solutions across various sectors.
Data-driven commerce solutions that improve journeys, boost sales, and optimize operations.
Data-driven commerce solutions that improve journeys, increase sales, and optimize operations.
Reliable medical platforms that protect patient data, simplify workflows, and support clinical accuracy.
Product-driven platforms that enhance workflows, automate processes, and scale with your business.
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Expert professionals ready to join your team and deliver results.
CASE STUDIES
Testimonials
What impressed us most was how Kultrix handled the full stack - frontend, backend, and mobile - with one cohesive team. Communication was clear, delivery was predictable, and the final product exceeded what we initially scoped.
Co-CEO
Kultrix built both our web platform and mobile app from scratch. Their team understood the complexity of our industrial workflows and translated them into clean, intuitive interfaces. We launched on time and our operators adopted the tools immediately.
Co-CEO
Kultrix handled everything for us - landing page, dashboard, mobile app, and even a Chrome extension. Having one team own the entire product surface meant everything felt connected and consistent. They shipped fast and the quality speaks for itself.
CEO, Ping Proxies
Kultrix has been our go-to partner for multiple projects - from marketing websites to full mobile applications and backend systems. They scale up when we need speed and maintain consistency across every project. Reliable, fast, and technically strong.
CEO, Volume Apps
Working with Kultrix on our mobile app and backend was seamless. They brought strong product thinking to every sprint, not just code. When priorities shifted, they adapted quickly without losing momentum. Exactly the kind of partner a product team needs.
Product Lead, Pelago
We needed a team that could handle mobile development, server infrastructure, and AI features all at once. Kultrix delivered on all three fronts. Our fitness platform went from concept to production in under four months with zero compromises on quality.
CEO, Fitblast
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FAQ
A frontend developer focuses on the engineering side - component architecture, state management, performance, and testing. A UI/UX developer sits closer to the design-engineering boundary, specialising in translating Figma designs with pixel precision and implementing interaction patterns. Kultrix can provide either profile, or both, depending on your team's needs.
Most engagements start within 48 hours of contract signing. We keep available capacity specifically for this. For larger teams or specialised framework requirements, one week is typical.
Yes - TypeScript is mandatory on all new Kultrix frontend projects. It catches bugs at compile time, improves IDE productivity, and makes large React codebases significantly easier to refactor. Our developers configure strict mode, shared tsconfig presets, and typed API clients as standard.
Yes. Our developers are experienced with Radix UI, shadcn/ui, Material UI, Ant Design, Chakra UI, and custom internal systems. They adopt your existing patterns, extend your token system, and avoid introducing conflicting abstractions into the codebase.
Server state is managed with React Query or SWR - avoiding redundant local copies of API data. Global UI state is handled with Zustand or Redux Toolkit. Local component state stays in useState and useReducer. We apply the principle of keeping state as close to where it is used as possible.
Core Web Vitals optimisation is part of every Kultrix frontend engagement. We audit Largest Contentful Paint, Cumulative Layout Shift, and Interaction to Next Paint using Lighthouse and PageSpeed Insights, then apply targeted fixes: image optimisation, font loading strategy, lazy loading, and eliminating render-blocking resources.
Yes. Responsive design is a baseline expectation at Kultrix. Our developers build mobile-first layouts using Tailwind CSS utility classes or CSS Grid and Flexbox, test across device sizes in Chrome DevTools and real devices, and ensure that touch interactions, tap targets, and font sizes meet usability standards on small screens.
Yes. We write E2E tests with Playwright for critical user flows - authentication, checkout, onboarding, and other high-stakes paths. Playwright tests run in CI on every pull request and block merges when they fail, giving you strong regression protection without manual QA overhead.
Yes. Our developers are experienced with Scrum and Kanban workflows. They join standups, estimate user stories, demo work at sprint reviews, and contribute to retrospectives. They use your project management tool (Jira, Linear, Notion) and communicate primarily through Slack or your preferred channel.
The minimum engagement is one month. This allows enough time to onboard properly, contribute meaningfully, and assess the fit. Most clients renew after the first month, and many engagements run for six to twelve months.
Every developer passes a structured technical screen and a practical coding challenge before joining the Kultrix bench. We also match based on domain experience - a developer who has built fintech dashboards will be a better fit for your fintech product than a generalist. If a placement is not working within the first two weeks, we replace at no charge.
A retainer locks in a fixed number of developer hours per month at a fixed monthly fee, giving you guaranteed availability and a lower effective rate. Time-and-materials is billed weekly against actual tracked hours - more flexible for projects with variable workload. Both models include transparent reporting and a dedicated account manager.
