Fullstack Engineer - Billing

Sorry, this job was removed at 06:07 p.m. (CST) on Tuesday, Sep 02, 2025
Easy Apply
Hiring Remotely in United States
Remote
AdTech
The Role

At MNTN, we put our people first, full stop. This allows our company culture to be defined by our team members and their shared values, like trust, ambition, quality, radical honesty, and compassionate leadership. It’s why we all really love working for the Hardest Working Software in Television™ (and also why we were named one of Ad Age’s Best Places To Work in 2024.)

We pride ourselves on bringing unrivaled performance and simplicity to Connected TV advertising. Our self-serve technology makes running TV ads as easy as search and social, helping brands drive measurable conversions, revenue, site visits, and more. It’s what led MNTN to being named one of Fast Company's Most Innovative Companies in 2023. You can learn more about us and everything we do by visiting https://mountain.com/.

We’re committed to innovation that empowers, not replaces. At MNTN, AI is a tool for growth, enhancing efficiency while keeping a people-first approach. Our goal is to streamline workflows and drive new solutions—without compromising the human element that makes our company great.

So if wanting to do more, own more, and make a bigger impact comes naturally to you, then you may be the person we're looking for to join us in our next stage of growth.

The Billing Squad owns every user-facing UI—serving both customers and internal teams—as well as every backend touch‑point for billing and invoicing. We build microservices and micro‑frontends that keep revenues flowing and finance joyful. If designing resilient payment flows and partnering with Finance to ship features that literally keep the lights on excites you, read on.

What You’ll Do:

  • Spend ~70 % of your time building and scaling backend services in Bun + TypeScript that power billing & invoicing workflows.
  • Craft the remaining ~30 % in the UI, building micro‑frontends with React and Webpack Module Federation.
  • Design and evolve REST/tRPC APIs that fit a micro‑service, event‑driven architecture.
  • Leverage modern job/queue systems (e.g. BullMQ, AWS SQS, Google Cloud Tasks or similar) to orchestrate long‑running and scheduled workloads.
  • Use AI development tools (Cursor, GitHub Copilot, ChatGPT, etc.) every day to enhance productivity and code quality.
  • Write clean, well‑tested, and observable code; automate everything via CI/CD.
  • Collaborate with Finance, Product, and fellow engineers to ship reliable billing features and continuously improve platform resilience.
  • Champion security and data‑protection best practices across services that handle payment data.

What You’ll Bring:

  • 4+ years of JavaScript/TypeScript experience, with a backend focus; strong skills in building RESTful APIs (or tRPC) in microservice architectures.
  • Proficient with modern cloud platforms (GCP preferred), service-oriented architectures, and scalable system design.
  • Hands-on with job/queue systems (e.g., BullMQ, SQS, Redis), CI/CD pipelines, Git workflows, testing frameworks, and observability tools.
  • Strong React expertise, including micro-frontends and Module Federation; solid HTML/CSS knowledge with accessibility and cross-browser awareness.
  • Experienced with relational databases (PostgreSQL preferred) and writing performant SQL.
  • Regularly use AI coding tools (e.g., Cursor, Copilot, ChatGPT) to enhance productivity.
  • Skilled in authentication/authorization across systems and translating business needs into technical solutions

MNTN Perks:

  • 100% remote within the US
  • Flexible vacation policy
  • Annual vacation allowance for travel related expenses
  • Three-day weekend every month of the year
  • Competitive compensation
  • 100% healthcare coverage
  • 401k plan
  • Flexible Spending Account (FSA) for dependent, medical, and dental care
  • Access to coaching, therapy, and professional development

About MNTN:

Our recruiters will always reach out using an email address ending with @mountain.com OR @mntn.com. If you’re contacted by someone without that address and they mention a Reference Code (which we never use), then that ain’t us folks. Tell those trolls to take a hike–you’re waiting to climb a MNTN.

MNTN provides advertising software for brands to reach their audience across Connected TV, web, and mobile. MNTN Performance TV has redefined what it means to advertise on television, transforming Connected TV into a direct-response, performance marketing channel. Our web retargeting has been leveraged by thousands of top brands for over a decade, driving billions of dollars in revenue.

Our solutions give advertisers total transparency and complete control over their campaigns all with the fastest go-live in the industry. As a result, thousands of top brands have partnered with MNTN, including OneWheel, Tarte, Decked, and National University.

#LI-Remote

Similar Jobs

ClickHouse Logo ClickHouse

Software Engineer

Database • Analytics
Easy Apply
Remote
United States
91 Employees
141K-208K Annually

ServiceNow Logo ServiceNow

Sales Executive

Artificial Intelligence • Cloud • HR Tech • Information Technology • Productivity • Software • Automation
Remote or Hybrid
United States
28000 Employees

SambaSafety Logo SambaSafety

Sales Development Representative

Insurance • Logistics • Software • Transportation • Business Intelligence
Remote or Hybrid
2 Locations
300 Employees
53K-78K Annually

SailPoint Logo SailPoint

Operations Manager

Artificial Intelligence • Cloud • Sales • Security • Software • Cybersecurity • Data Privacy
Remote or Hybrid
United States
2461 Employees
118K-220K Annually
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: Austin (Remote), Texas
405 Employees

What We Do

MNTN builds advertising software for brands to drive measurable conversions, revenue, site visits and more through the power of television.

MNTN Performance TV is the world’s first and only Connected TV advertising platform optimized for direct-response marketing goals. It redefines what advertisers can do with television, giving them the power to tie performance directly to their TV campaigns.

Gallery

Gallery

Similar Companies Hiring

Grocery TV Thumbnail
Software • Retail • Marketing Tech • Hardware • Digital Media • AdTech
Austin, TX
56 Employees
Agentio Thumbnail
Artificial Intelligence • AdTech
Brooklyn, New York
30 Employees
ClickMint Thumbnail
Marketing Tech • Generative AI • eCommerce • AdTech
Malibu, CA
9 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account