Senior Fullstack Engineer

About Mangomint

Mangomint is the essential platform used by salons, spas, and beauty professionals globally to run and expand their businesses. We provide the daily workflows that matter most: bookings, payments, client communication, staff operations, marketing, business performance analytics, and much more.

About the Role

We are seeking a Senior Fullstack Engineer to help build our internal CRM and automation platform supporting sales, marketing, onboarding, and support teams. In this role, you will work across the entire stack—frontend and backend—to develop features that make business processes efficient and effective.

You'll join a small, technical team where your impact is immediately visible. You'll have meaningful ownership over the features you build and the decisions that shape them. This position is perfect for someone who thrives with autonomy, values flexibility, and is excited to build internal products for their colleagues.

Key Responsibilities

• Build new features in our CRM using Next.js.
• Create automations within our workflow automation platform using FastAPI and Inngest.
• Partner with teams across the organization to understand workflows, build solutions to automate them, and continuously improve operational efficiency.
• Develop agentic AI solutions for data enrichment, task automation, and more.
• Shape internal products as they evolve by contributing innovative ideas.
• Take full ownership of features from planning and implementation through monitoring and refinement.

Technologies You Will Work With

Frontend: TypeScript, Next.js, Tailwind CSS, Shadcn/ui
Backend: Node.js, Python, PostgreSQL, Snowflake, FastAPI, Inngest
Infrastructure: Supabase, Vercel, AWS, Snowflake
AI/LLM Tools: Codex, Claude Code

We're Looking For

• 5+ years of professional experience in web development.
• Deep expertise in JavaScript/TypeScript and modern SPA frameworks (React or Next.js preferred).
• Experience with orchestration tools such as Inngest, Temporal, Prefect, Airflow, etc.
• Comfort using agentic coding tools like Claude Code, Codex, Cursor for feature development and code review.
• The ability to work comfortably in environments of ambiguity, driving fast iteration while taking ownership of outcomes.
• Excellent communication and collaboration skills with the ability to partner directly with non-technical stakeholders.