Senior Full-Stack JS / TS Engineer Remote Job

Role Overview

We’re looking for a Senior Software Engineer to help scale and improve an existing consumer and B2B product. You’ll work across the full stack on a live production system, collaborating closely with product and design in a pragmatic, startup environment. The role is hands-on, with a strong focus on code quality, delivery, and using modern tooling, including AI-assisted development tools like Claude Code.

Company Description

An AI-powered influencer marketing platform built for hospitality brands (hotels, restaurants, events, and experiences) and helps them connect with creators, launch and manage collaborations, and drive awareness and bookings in a way that’s designed to be simple, affordable, and effective – without needing a large marketing team.

Responsibilities

Build and maintain front-end applications with React, Next.js, TypeScript, Tailwind, and Redux.
Develop and enhance backend services and REST APIs using TypeScript, Fastify, Mongoose, and MongoDB.
Design, optimize, and query MongoDB data models; work with MongoDB Atlas.
Ensure scalability, reliability, observability, and maintainability of an existing production system.
Integrate and maintain third-party services (Stripe, Firebase, SendGrid, Twilio, Sentry, Slack API, analytics tools).
Collaborate with product/design on features for both creators and hospitality businesses; review code, raise engineering standards, and mentor engineers.
Use AI coding tools (e.g. Claude Code) as part of the daily development workflow.

Requirments

Background

5+ years professional software engineering, including experience with both consumer-facing and B2B/SaaS products.
Comfortable working in and improving an existing codebase incrementally.
Strong professional English and clear written/verbal communication in remote teams.

Languages & Frontend

Strong TypeScript (strict mode, generics, inference, discriminated unions) and JavaScript (ES2022+, async/await, ES modules).
React (hooks, modern component patterns) and Next.js fundamentals (SSR/SSG, routing, API routes).
Tailwind CSS, SCSS/Sass for component-level styling; Redux (state management, thunks, next-redux-wrapper).

Backend & APIs

Solid REST API design and implementation experience.
Fastify (plugin architecture, hooks, decorators, request lifecycle).
MongoDB with Mongoose (schema design, document modeling, aggregation, indexing).
Firebase Authentication (client flows and server-side verification, JWT/Bearer token patterns).

Tooling, Testing, DevOps

Git with conventional commits, ESLint, dprint, pnpm, Husky/lint-staged.
Vitest and MongoDB Memory Server for testing.
Experience deploying/operating systems on Google Cloud Platform, including Cloud Run (implied) and Secret Manager.
Experience with Vercel for frontend deployment.
Comfortable with modern developer tooling and AI-assisted coding.

Integrations