Senior Software Engineer

United Statessenior

Software EngineerSoftware Engineering

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Quick Summary

Overview

Key Responsibilities

Design and build a robust attribution platform that reaches the right audience, anywhere, anytime Build high-volume Kotlin services that are reliable at scale on GCP/GKE Design and own data pipelines using SQLMesh, Airflow, and BigQuery to power…

Technical Tools

airflowbigquerycassandradbtgcpjavakafkakotlinkubernetespythonscalasnowflakesqlcode-reviewdatabase-designdistributed-systemsetllinuxmentoringmicroservicessql-optimizationstreaming-data

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/.

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.

Responsibilities

~1 min read

→Design and build a robust attribution platform that reaches the right audience, anywhere, anytime
→Build high-volume Kotlin services that are reliable at scale on GCP/GKE
→Design and own data pipelines using SQLMesh, Airflow, and BigQuery to power attribution analytics and downstream products
→Write and optimize SQL against large datasets for both production services and analytical workloads
→Collaborate with and explain complex technical issues to product teams and partner engineering squads
→Mentor engineers across the team and raise the bar on design, testing, and operational quality
→Optimize and enhance existing services and pipelines

Within 90 days, you've ramped on the Attribution stack, shipped meaningful changes to production, and are comfortable navigating our service topology and data model
You own new data pipelines end-to-end from requirements through SQLMesh/Airflow design, deployment, and on-call. You partner with data analysts to make attribution data trustworthy and easy to consume
You're a trusted technical voice in cross-squad discussions, helping shape attribution-adjacent work and mentoring engineers through design and code review

5+ years of backend development experience, ideally in Kotlin (Java or Scala also welcome)
3+ years writing production SQL: query optimization, window functions, and schema design against large datasets
Experience designing and operating data pipelines with tools like SQLMesh, Airflow, dbt, or similar
Experience with cloud data warehouses (BigQuery preferred; Snowflake, Redshift, etc. also relevant)
Experience with microservice architectures running on Kubernetes (GKE preferred)
Experience with event streaming (Kafka or similar)
Python experience for scripting and pipeline work
Strong knowledge of modern design patterns and distributed systems fundamentals
Comfortable writing effective unit and integration tests with frameworks
Proficient with Git and a Linux/UNIX environment
Knowledge of NoSQL databases such as Cassandra (preferred)
Experience mentoring engineers and influencing technical direction across a team

What We Offer

~1 min read

✓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

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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