Senior Fullstack Engineer - TypeScript​/Next.js​/Supabase

At Huzzle, we connect exceptional talent with top opportunities at leading companies across the UK, US, Canada, Europe, and Australia. Our clients include startups, digital agencies, and tech platforms in industries such as SaaS, Mar Tech, Fin Tech, and Health Tech. Unlike an outsourcing agency, we place you directly with a client where you’re hired in-house as a valued member of their team.

Our client is a fast-growing technology company building multiple SaaS platforms across AI, healthcare, and data intelligence. Their core product is a multi-tenant AI-powered platform designed to enhance sales intelligence and call analysis, alongside a HIPAA-aware healthcare portal and a growing audience intelligence platform.

They operate in a highly technical, product-driven environment focused on scalability, clean architecture, and efficient execution.

Role Type:
Full-time

Engagement:
Independent Contractor

We are hiring a Full-Stack Software Engineer to work across multiple SaaS applications, contributing to feature development, integrations, debugging, and backend systems.

This is a high-impact remote engineering role where you’ll split your time across products based on sprint priorities, with a primary focus on an AI-driven platform. You’ll be responsible for executing scoped tasks with precision while also contributing to more complex systems and integrations.

• AI Sales Intelligence Platform (Primary Focus – ~70%)
  • Build and implement features from architectural specifications
  • Develop modern UI components, dashboards, and workflows using React and Next.js
  • Build and maintain API routes with validation, pagination, and error handling
  • Debug and maintain third-party integrations and APIs
  • Implement webhook pipelines and asynchronous data workflows
  • Manage background jobs and workflow orchestration
  • Contribute to database design, migrations, and row-level security (RLS) policies
  • Write unit and integration tests to ensure system reliability
• Healthcare B2B Platform (~30%)
  • Develop onboarding flows and role-based interfaces
  • Build and maintain authentication systems
  • Integrate with third-party healthcare and pharmacy APIs
  • Implement validation, audit logging, and compliance-aware features
  • Troubleshoot bugs and improve system workflows
• Additional Product Work (As Needed)
  • Support feature enhancements and maintenance for a stable audience intelligence platform
• General Responsibilities
  • Execute development tasks with high reliability and attention to detail
  • Collaborate through Git-based workflows, PR reviews, and structured documentation
  • Troubleshoot API, integration, and system-level issues
  • Use AI tools to improve development efficiency and output quality

• 2–4+ years of experience with Type Script (strict mode, generics, strong typing)
• Strong experience with Next.js (App Router, API routes, middleware)
• Proficiency in React with modern component architecture
• Solid experience with PostgreSQL (queries, joins, schema design, RLS)
• Experience with Supabase or similar BaaS platforms (auth, database, storage, edge functions)

• REST API integrations and debugging
• Handling third-party API inconsistencies and failures
• Webhooks and asynchronous data processing
• Background jobs and workflow orchestration
  
  Git workflows (feature branches, pull requests, code reviews)

• Experience with multi-tenant SaaS platforms
• Exposure to AI or voice-based systems
• Experience working with HIPAA-compliant or regulated environments
• Strong understanding of system design and integration patterns

• Async-first communication environment
• Documentation-driven development
• All code reviewed via pull requests before merging
• Strong focus on clean, reliable execution over…