Designer and Full-Stack SaaS Developer to help polish existing designs

Job Description / Project Overview We are seeking an experienced Designer and Full-Stack SaaS Developer to help polish existing designs and build undrwrite.ai, a B2C and B2B SaaS real estate underwriting application. The platform enables users (individual investors, syndicators, lenders, and brokers) to enter property addresses, retrieve property data and comparable sales, underwrite deals under 5 distinct investment strategies, check metrics against custom "buy boxes," and export professional Investment Reports. Prototype is currently built in Claude design. Target Users & Asset Types Individual Investors: Quick go/no-go analysis for single deals. Syndicators: Underwrite larger assets and share with partners/LPs. Lenders: Evaluate DSCR, LTV, and exit assumptions for loan requests. Brokers: Package deals into client-ready reports. Asset Scope: Single-family homes, multi-family homes and commercial assets. Core Strategies & Underwriting Engine The platform supports 5 core investment strategies with dedicated inputs, default buy-box thresholds, metrics, charts, projection tables, and plain-language summaries: Buy & Hold BRRRR (Buy, Rehab, Rent, Refinance, Repeat) Fix & Flip Wholesale New Build Note: Users can switch strategies inline inside the Deal Room without losing property context. User Experience & Core Flow Home: Address search bar with natural language support and quick-start strategy cards. Property Info: Details, photos, price history, comps with search-radius map (list/grid view), and 5 collapsible strategy cards. Underwrite: Inputs confirmation, real-time metrics, buy-box pass/fail indicators, charts, projection tables, and notes. Collaborate / Compare / Investment Report: Team sharing, side-by-side scenario comparison, and PDF export. Information Architecture (9 Pages) Marketing / Funnel homepage (About the app, Value proposition, pricing packages and login/signup) Home: Greeting, search bar, quick-start strategies, interactive dot-field background. Dashboard: 6 KPIs with 12-week trend charts, Pipeline by Stage, Strategy Mix. Deal Room: Tabs for Property Info (default), Underwrite, Collaborate, Compare, and Investment Report. Deals: Master table of all deals with stage, strategy, and metrics. Deal Comparison: Side-by-side deal and scenario comparisons. Reports: Generated Investment Reports. Team & Sharing: Members, roles, and shared deals. Settings & Billing: Profile, buy-box defaults, plans, and billing. Global UI & Technical Delivery Delivery Platform: Native Desktop Web Application. Fully responsive across break points. Sidebar: Collapsible left sidebar with light/dark theme toggle (follows device settings by default). Design System (DS V4): Inter & JetBrains Mono fonts, #3B82F6 accent color, raised skeuomorphic cards, 8px radii. Animations: Interactive mouse-following dot-field animations on Home and landing pages. Backend, Infrastructure & Open Scope User management: control and managed demo and paid users. Authentication: Google, Apple, Email, SSO / Enterprise sign-in. Data Feeds & Media: Integration with real estate data providers (MLS, county records, Zillow, or comps APIs). AI & LLM Integration: Natural language query parsing (e.g., "analyze this as a BRRRR" maps to strategy and pre-fills inputs). Engineering must have AI/LLM development expertise. Payments & Subscriptions: Integrated billing gateway. Reporting & PDFs: Dynamic PDF generator for client-ready reports. Mapping: Google Maps API. Notifications & Email: Automated emails/SMS and support ticket/chat integration. Thank for signing up, password reset, sorry to see you go, etc. Recommended tech stack for building undrwrite.ai. Along with suggest CRM (ie, HubSpot, etc). Required Skills & Qualifications Proven track record of developing responsive full-stack SaaS web applications. Strong skills in frontend UI execution, responsive design, and design system integration. Backend experience with REST/GraphQL, database design, payment processing, and authentication systems. Experience integrating third-party APIs (real estate feeds, Google Maps, notifications). Hands-on experience with AI/LLM integrations. Timeline and MVP Delivery: 4-6 weeks for beta version. MVP is B2C only.