Full-Stack Web Developer

NEWLISTA — Senior Full-Stack JavaScript Developer (React/Next.js + Node.js)Location: Houston, TX (Remote considered for the right candidate) Type: Contract / Fixed-Price Per Milestone (NOT hourly) Company: Newlista Ventures LLC⭐ About NewlistaNewlista is a modern commercial real estate listing and investor-networking platform. We are seeking an experienced Senior Full-Stack JavaScript Developer to complete and stabilize the platform and provide long-term development support.This role is ideal for developers who excel in refactoring existing codebases, diagnosing complex bugs, and delivering production-quality, scalable solutions.⭐ Role OverviewThis is a contract-based role (NOT hourly billing). You will:Audit the existing React/Next.js + Node.js codebaseFix bugs, improve performance, and stabilize featuresDevelop new features and improve existing functionalityEnsure clean, modern code that avoids regressionsCreate/maintain a staging environment and handle QA before deploymentWork with Stripe, SendGrid, PostgreSQL, and REST APIsGuarantee platform reliability across desktop and mobile⭐ Required Technical Skills (Non-negotiable)You MUST have deep, senior-level experience in:FrontendReactNext.jsTypeScriptTailwindCSS or modern CSS frameworksState management (Redux, Context, or equivalent)BackendNode.jsExpress.jsPostgreSQLREST APIsAuthentication flows (JWT, sessions, etc.)API-level error handling and loggingOther RequirementsGitHub portfolio with real custom code (not WordPress)Strong debugging, refactoring, and problem-solving skillsAbility to work independently and meet deadlinesProfessional QA and testing workflowFamiliarity with SiteGround, AWS, or similar hosting⭐ Nice-to-Have (Bonus)Experience with SendGridExperience with Stripe subscriptionsKnowledge of CI/CD pipelinesSecurity best practices for SaaS platforms⭐ What We Do NOT WantTo save your time and ours, do NOT apply if you are:❌ WordPress-only developers ❌ PHP-only developers ❌ Freelancers with no GitHub history ❌ Developers who only use jQuery or templates ❌ Require a Monthly Salary (this role is fixed-price only- Independent Contractor- No Salary) ❌ Agencies or large firmsNewlista requires a modern, hard-coded approach — not plug-and-play development.⭐ Before Applying, Please Prepare:GitHub link with real code samplesOne React/Next.js component you wroteOne Node.js/Express API route you wroteDescription of your QA/testing workflowYour fixed-price structure for refactoring + feature developmentAll candidates must sign an NDA before receiving access to any code.⭐ How to ApplySend your samples and portfolio to: 📧 Joseph@Newlista.com Subject: Senior Full-Stack Developer – Newlista