Senior Full-Stack Engineer, Client Applications

Job Description

About GigaRev GigaRev is an AI-first growth and technology company building client-facing applications, AI-enabled workflows, automation systems, dashboards, portals, and digital product experiences for businesses across multiple industries. We move quickly, use modern AI-assisted development tools, and care deeply about building products that are not just fast to launch, but also stable, secure, scalable, and maintainable. Role Summary GigaRev is hiring a Senior Full-Stack Engineer, Client Applications to provide technical ownership, engineering quality, architecture support, and production readiness across client-deployed applications. This role will work closely with AI Product Builders, product leads, designers, automation specialists, and client delivery teams. You will help convert prototypes and AI-assisted builds into reliable, production-ready applications. The ideal candidate is a strong full-stack engineer who can work across frontend, backend, APIs, databases, authentication, integrations, deployments, and performance optimization. Key ResponsibilitiesFull-Stack Engineering Build and maintain client-facing web applications, dashboards, portals, internal tools, and workflow-based products. Develop frontend and backend features using modern web technologies. Support application logic, APIs, databases, integrations, forms, authentication, role-based access, and reporting. Help improve existing prototypes, MVPs, and AI-generated builds into stable production systems. Technical Architecture & Code Quality Review application architecture, code structure, database design, API design, and deployment setup. Identify and reduce technical debt. Create reusable engineering patterns, templates, and implementation standards. Review AI-generated or prototype-quality code for security, maintainability, performance, and scalability. Production Readiness & Reliability Diagnose and resolve complex bugs across frontend, backend, database, API, and integration layers. Improve application performance, load times, API response times, and database queries. Strengthen logging, monitoring, error handling, testing, release management, and rollback practices. Help ensure applications are stable and reliable for real client usage. Security & Access Control Review authentication, authorization, permissions, environment variables, secrets, APIs, and data handling. Improve security practices across client applications. Support secure handling of credentials, integrations, and client data. Recommend practical improvements for backup, recovery, access control, and compliance readiness. Cross-Functional Support Partner with product builders and client teams to translate requirements into technical implementation. Advise when a product update is simple enough for AI-assisted tools versus when senior engineering support is needed. Help non-technical stakeholders understand tradeoffs, technical risks, timelines, and implementation options. Document architecture, setup instructions, deployment steps, known issues, and troubleshooting guidance. Required Qualifications 5+ years of full-stack engineering experience. Strong experience with JavaScript and/or TypeScript. Strong experience with React, Next.js, Node.js, APIs, and modern web application architecture. Experience with databases such as PostgreSQL, Supabase, Firebase, MongoDB, or similar. Experience with authentication, role-based access, environment management, and deployment workflows. Experience with GitHub, branching, pull requests, code reviews, and release management. Strong debugging and problem-solving ability. Experience maintaining production applications. Ability to communicate clearly with product, business, and client-facing teams. Preferred Qualifications Experience with Vercel, Railway, Render, Netlify, Firebase, Supabase, or similar platforms. Experience with AI-assisted development tools such as Cursor, Replit, Lovable, Bolt, v0, or GitHub Copilot. Experience with OpenAI, Anthropic, Vapi, ElevenLabs, n8n, Make, Zapier, or related AI/automation platforms. Experience with SaaS platforms, client portals, dashboards, LMS platforms, internal tools, or workflow automation systems. Experience with CRM integrations, webhooks, third-party APIs, and enterprise integrations. Experience with monitoring, logging, testing, CI/CD, and deployment pipelines. Basic DevOps or cloud infrastructure knowledge. What Success Looks Like Client applications become more stable, scalable, and maintainable. Production bugs and technical debt are reduced. AI-generated code is reviewed and improved before reaching production. Applications perform better under real client usage. Security and access-control risks are identified and addressed. Product and delivery teams can move faster without creating technical chaos. GigaRev can confidently launch and maintain more client applications. Ideal Candidate Profile You are a strong fit if you are a practical senior engineer who can work in fast-moving environments, improve imperfect systems, guide technical decisions, and collaborate well with both technical and non-technical teams. You do not need to own every product decision, but you should be the technical safety net that ensures client applications are built properly.