Fullstack Developer - JS/TS

About the role

We are looking for a Full-Stack Developer to maintain, extend, and improve our SaaS risk management platform. The application helps teams map, analyse, and share risk. You will own feature development end-to-end - from database queries through to polished UI - and contribute to a clean, well-structured codebase.

Responsibilities

• The platform is a modern TypeScript / Next.js full-stack SaaS application consisting of:
• React-based frontend with Tailwind CSS and a component library for rich, polished UI
• Server-side rendering and API routes via Next.js (v14/15), including server actions
• SQL Server database with stored procedures for robust, performant data access
• LLM API integrations delivering AI-powered risk analysis features
• Auth.js authentication with multiple OAuth providers (Google, GitHub, Microsoft)
• Paddle-powered subscription and billing management
• Key Technologies
• Runtime
• TypeScript / Node.js
• Frontend Framework
• React / Next.js (v14/15)
• Styling
• Tailwind CSS, Component Library
• Database
• SQL Server (Azure SQL & on-premises)
• Data Fetching
• SWR
• Auth
• Auth.js with OAuth (Google, GitHub, Microsoft)
• Billing
• Paddle (or similar subscription platform)
• AI / LLM
• LLM APIs (via SDK)
• Monitoring
• Azure Application Insights
• Tooling
• Git, Vitest / Testing Library, Prettier, ESLint
• Develop and maintain features across the full stack of the JS/TS application
• Build and update UI components using Tailwind CSS and the component library
• Write and optimise SQL Server queries and database access scripts
• Integrate and maintain AI-powered features via LLM APIs
• Manage authentication flows using Auth.js with OAuth providers (Google, GitHub, Microsoft)
• Maintain and extend the billing and subscription system
• Monitor application health and diagnose issues using Azure Application Insights
• Required Skills & Experience
• Core
• 6+ years of professional experience as a full-stack developer.
• Strong TypeScript and React proficiency
• Hands-on experience with Next.js (v14/15)
• Working knowledge of SQL Server and stored procedures
• Frontend
• Tailwind CSS and component library experience
• Familiarity with SWR for client-side data fetching
• Backend / Infrastructure
• Experience with server actions and API routes in Next.js
• Understanding of OAuth flows
• Tooling
• Git-based team workflows (feature branches, PRs)
• Vitest / Testing Library or equivalent unit/component testing experience
• Prettier and ESLint configuration

Requirements

• Familiarity with LLM SDKs
• Experience with Paddle or other subscription billing platforms
• Experience with Azure
• Recruitment Notice
• Beware of Recruitment Scams
• We have been made aware of individuals fraudulently posing as members of our Talent Acquisition team and extending fake job offers. These scams may involve requests for personal information or payment for equipment.
• Protect yourself by following these steps:
• Verify that all communications from our recruiting team come from an @banyansof

Benefits

Additional Information

Banyan Software is the best permanent home for software businesses that serve specialized industries, their employees, and their customers. We are on a mission to acquire, build, and grow great companies worldwide, helping them modernize through shared AI expertise and operational discipline. The Banyan Software Foundation, endowed with $100 million in Banyan stock, leverages technology to build a greener and more equitable world. Banyan is Great Place to Work Certified, a five-time Inc. 5000 honoree, and a top 10 company on the Deloitte Technology Fast 500. Founded in 2016 and headquartered in Atlanta, Banyan operates more than 100 portfolio companies across North America, the UK, EU, and APAC.

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