Senior Fullstack Engineer – CRM & Automation Platform Lead

Mangomint; United States; Hybrid; USD 140,000 - 190,000; Full time

Benefits offered by this job

Health, dental, vision, life & LTD

Wellness budget

Calm app + One Medical

Flexible PTO

401k plan

Employee stock option program

Job summary

Mangomint is seeking a Senior Fullstack Engineer to build our CRM and automation platform across the stack to support sales, marketing, onboarding, and support workflows.

You’ll join a small, technical team where your impact will be immediately visible, with meaningful ownership over the features you build and the decisions that shape them. This role is ideal for someone who thrives with autonomy and flexibility, building internal products for colleagues.

Qualifications

• 5+ years of professional experience in web development.
• Expertise in JavaScript/TypeScript with deep experience in modern SPA frameworks such as React, Next.js (preferred), or Vue.js.
• Experience with orchestration tools such as Inngest, Temporal, Prefect, Airflow, etc.
• Comfortable using agentic coding tools like Claude Code, Codex, Cursor for feature development and code review.
• Comfortable with ambiguity, fast iteration, and taking ownership of outcomes.
• Excellent communication and collaboration skills. Ability to work directly with non-technical stakeholders.
• Strong product and design sense.

Skills

5+ years web dev

JavaScript/TypeScript

React/Next.js/Vue.js

Orchestration tools

Agentic coding tools

Communication & collaboration

Product & design sense

Job description

Mangomint is seeking a Senior Fullstack Engineer to build our CRM and automation platform across the stack to support sales, marketing, onboarding, and support workflows.

You’ll join a small, technical team where your impact will be immediately visible, with meaningful ownership over the features you build and the decisions that shape them. This role is ideal for someone who thrives with autonomy and flexibility, building internal products for colleagues.