Frontend Developer

We are building a multi-tenant SaaS platform that includes a full-featured cloud-based 2DCAD editor built on Three.js WebGL, a data-driven job management application, fieldcapture workflows, and AI-assisted research tooling.

We are looking for a Senior Frontend Developer with deep React expertise to own the CADeditor experience and contribute to the broader web application. This is a technicallydemanding role that requires strong React engineering, component architecture skills, andcomfort working close to the browser — performance, rendering, and precision matter here.

What You Will Work On

Cloud CAD Editor

— a browser-based 2D CAD editor built on Three.js (WebGL,orthographic rendering). You will build and maintain CAD drawing tools, snappingengines, layer management, entity selection, undo/redo, and real-time collaborationfeatures. The editor must sustain 60fps on large drawings.

Web Application

— a Turborepo monorepo SaaS app with multiple feature modulesincluding orders, quoting, research, quality review, and billing. Feature-gated by roleand subscription tier.

Shared package library

— auth, API client, UI components, and TypeScript typesshared across both applications.

CI/CD and deployment

— GitHub Actions pipelines deploying to AWS S3 +CloudFront across dev, staging, and production environments.

Key Responsibilities

Build and maintain features in the WebGL CAD editor — drawing tools, geometry,snapping, entity manipulation, and canvas interaction.

Architect and develop scalable, reusable React components and feature modulesfollowing best practices for performance and maintainability.

Design and manage complex state across multiple layers — server state via ReactQuery, UI state via Zustand, and CAD editor state via Redux Toolkit.

Build and maintain shared Turborepo packages consumed across multipleapplications.

Implement advanced React patterns including lazy loading, code splitting,memoization, and concurrent features to meet performance targets.

Integrate frontend applications with REST backend APIs using secure cookie-basedauthentication.

Implement role-based access control, route protection, and subscription-tier featuregating.

Handle real-time UI updates via WebSocket connections.

Integrate third-party SDKs including Stripe for billing flows and Mapbox GL JS formap-based workflows.

Optimize rendering performance and ensure cross-browser compatibility.

Lead code reviews, establish patterns, and mentor junior developers.

Participate in sprint planning and agile ceremonies.

Write clean, well-typed TypeScript code that is easy to review, test, and extend.

Core React Expertise

3–5 years of professional frontend development experience with React as the primaryframework

Expert-level understanding of React internals — reconciliation, rendering behavior,concurrent mode, and the Rules of Hooks

Strong experience building component libraries and design systems with reusable,composable components

Proven ability to identify and fix React performance issues — unnecessary re-renders,large component trees, expensive computations

Experience with React Router for complex client-side routing including protectedroutes, lazy loading, and nested layouts

Hands-on experience with React Query (TanStack Query v5) for server state —caching, invalidation, optimistic updates, pagination

Experience with Zustand or equivalent lightweight state for UI state management

Deep familiarity with React hooks — custom hooks, useCallback, useMemo, useRef,useTransition, and useContext patterns

TypeScript

Strong TypeScript skills — generics, utility types, discriminated unions, and strictmode

Experience typing complex state shapes, API response contracts, and componentprop interfaces

Comfortable enforcing type safety across shared packages and multiple consumingapps

State Management

Experience with Redux Toolkit in a production codebase — slice design, RTK Query,middleware, and selector patterns

Ability to reason about when to use local state, shared UI state, and server stateappropriately

CAD or Graphics (Required)

Hands-on experience with Three.js, WebGL, or equivalent browser rendering engine

Understanding of 2D geometric operations, coordinate systems, and canvasinteraction

Experience building or maintaining tools that require high frame-rate rendering(60fps targets)

Comfort working with orthographic cameras, raycasting, and scene graphmanagement

Architecture and Tooling

Experience with monorepo tooling (Turborepo, Nx, or equivalent)

Familiarity with Vite as a build tool — configuration, plugin ecosystem, andenvironment variables

Understanding of CloudFront/CDN deployments, cache-control strategy, and SPArouting patterns

Experience with GitHub Actions or equivalent CI/CD pipelines

API and Auth

Experience integrating REST APIs with typed fetch clients and centralized errorhandling

Understanding of browser cookie-based authentication (httpOnly cookies, CORS,credentials: include)

Familiarity with OAuth2 / OIDC authentication flows

Nice-to-Have Skills

Experience with Mapbox GL JS or similar map rendering libraries

Experience with Stripe Elements or Stripe React SDK

Exposure to AWS (S3, CloudFront, ECS)

Experience with WebSocket-based real-time features in React

Understanding of Content Security Policy and browser security headers

Familiarity with React Native for future mobile work

What We Value

Deep understanding of React — not just how to use it, but why it works the way it does

Developers who care about rendering performance and browser precision

Clean, typed, reviewable code over clever shortcuts

Engineers who establish patterns the team can follow, not just ship features

Comfort working in a fast-moving product at an early but structured stage

Only shortlisted candidates will be contacted for further evaluation.