Senior Fullstack Engineer - TypeScript / Next.js / Supabase
TypeContract
LocationBosnia and Herzegovina
Posted8 hours ago
About Huzzle
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, MarTech, FinTech, and HealthTech. Unlike an outsourcing agency, we place you directly with a client where you’re hired in-house as a valued member of their team.
About the Company
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
Job Summary
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.
Key Responsibilities
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
Requirements
Core Technical Skills
2–4+ years of experience with TypeScript (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)
Technical Experience
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)
Nice to Have
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
How You’ll Work
Async-first communication environment
Documentation-driven development
All code reviewed via pull requests before merging
Strong focus on clean, reliable execution over unnecessary complexity
Collaborative team culture with encouragement to ask questions early
Growth Opportunity
Increased ownership across systems and architecture
Opportunity to lead projects and step into senior responsibilities
Exposure to multiple SaaS products across AI, healthcare, and data platforms
Ideal Candidate
Detail-oriented and highly reliable
Strong problem-solver, especially in debugging complex systems
Comfortable working independently within structured systems
Clear and proactive communicator
Able to balance speed with high-quality output
Benefits
💰 Competitive salary based on experience and region
🌎 Fully remote role with flexible working environment
🚀 Work on cutting-edge AI and multi-product SaaS platforms
📈 Long-term growth with opportunities for leadership and ownership
🧠 Exposure to complex systems, integrations, and scalable architectures
🎯 High-impact role contributing directly to product development
Originally posted on Himalayas
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, MarTech, FinTech, and HealthTech. Unlike an outsourcing agency, we place you directly with a client where you’re hired in-house as a valued member of their team.
About the Company
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
Job Summary
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.
Key Responsibilities
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
Requirements
Core Technical Skills
2–4+ years of experience with TypeScript (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)
Technical Experience
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)
Nice to Have
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
How You’ll Work
Async-first communication environment
Documentation-driven development
All code reviewed via pull requests before merging
Strong focus on clean, reliable execution over unnecessary complexity
Collaborative team culture with encouragement to ask questions early
Growth Opportunity
Increased ownership across systems and architecture
Opportunity to lead projects and step into senior responsibilities
Exposure to multiple SaaS products across AI, healthcare, and data platforms
Ideal Candidate
Detail-oriented and highly reliable
Strong problem-solver, especially in debugging complex systems
Comfortable working independently within structured systems
Clear and proactive communicator
Able to balance speed with high-quality output
Benefits
💰 Competitive salary based on experience and region
🌎 Fully remote role with flexible working environment
🚀 Work on cutting-edge AI and multi-product SaaS platforms
📈 Long-term growth with opportunities for leadership and ownership
🧠 Exposure to complex systems, integrations, and scalable architectures
🎯 High-impact role contributing directly to product development
Originally posted on Himalayas
Apply on Himalayas →
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