This role is ideal for a Senior Backend Engineer with 5+ years of experience who thrives on solving complex, low-latency challenges. You should have a deep back
Work type: remote
Location: United States
Type: Full-time
This role is ideal for a Senior Backend Engineer with 5+ years of experience who thrives on solving complex, low-latency challenges. You should have a deep background in distributed systems and microservices, specifically within high-throughput environments where data-driven logic (like pacing algorithms) makes a real-time impact. Expertise in Kotlin or Python is preferred, though a polyglot mindset—willingness to touch Rust or PySpark—is highly valued. The biggest draws here are the engineering culture and unique perks. It is a fully remote US-based role with a "people-first" philosophy, featuring a **three-day weekend every month** and an annual vacation allowance for travel expenses. You’ll be working on high-visibility projects (like a brand-new in-house pacing algorithm) that handle billions of daily auctions, offering significant technical scaling opportunities. **You might be a good fit if you:** * Have experience scaling microservices that process terabytes of data with millisecond precision. * Are comfortable with SQL performance tuning and high-throughput messaging systems. * Want to work for a company that prioritizes work-life balance through mandatory extra days off and flexible vacation. * Have a "product mindset" and take extreme ownership over the performance of the code you ship.
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 2025.)
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/](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 ad landscape is unpredictable — traffic spikes, auctions fluctuate, and budgets never sleep. Your team’s mission? Make sure every dollar is spent exactly where and when it should be. It’s like balancing a checkbook on a roller coaster — but with better code and cooler teammates.
We’re looking for a Senior Software Engineer to join our Ad Buying-Pacing team — the brains behind ensuring every advertising campaign spends efficiently, accurately, and right on time. This squad owns the logic that controls how we bid, how fast we spend, and how we keep performance rock solid across billions of daily auctions.
It’s a mix of math, machine learning, and “how in the world does all this happen in milliseconds?” energy. You’ll be writing systems that talk to some of the biggest streaming and supply-side partners in real time, processing over a terabyte of data and hundreds of thousands of updates per day. This is one of those “under the hood” teams that quietly runs the show — and right now, they’re about to launch a brand-new, in-house pacing algorithm that has serious visibility across leadership. (Translation: your work here gets noticed.)
What You'll Do:
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 Tarte, Decked, and National University.
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