Responsibilities
- Design, build, and operate high-throughput Java/Kotlin services that power our ad server and creative delivery pipelines
- Own systems end-to-end — from API design and ingestion flows to transformation, caching, and global delivery
- Work across the stack when needed (Rust services, Kafka streams, Terraform, relational databases) to solve the right problem with the right tool
- Improve performance, observability, and resiliency of critical production systems running at scale
- Partner closely with Product and Project leads to translate business needs into scalable technical solutions
- Contribute to architectural decisions that shape the future of our creative platform
- Raise the engineering bar through thoughtful code reviews, design discussions, and pragmatic best practices
Requirements
- 5+ years building production-grade backend systems in Java, Kotlin, or Scala
- A product mindset — you care about why you’re building something, not just what you’re building
- Experience designing and operating high-scale, distributed systems
- Strong SQL fundamentals — schema design, indexing strategies, query optimization, and performance tuning
- Comfort working across multiple technologies and services, even outside your primary language
- Solid understanding of RESTful APIs and microservices architecture
- Familiarity with messaging systems (e.g., Kafka) and asynchronous processing patterns
- Practical use of AI-assisted development tools (Cursor, ChatGPT, LLM copilots) to improve speed and quality
Benefits
- 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
Work Arrangement
Remote (Worldwide)
Additional Information
- Recruiters will always reach out using an email address ending with @mountain.com OR @mntn.com
- If contacted by someone without that email domain mentioning a Reference Code, it is not legitimate
- The company was named one of Ad Age’s Best Places To Work in 2025
- MNTN was named one of Fast Company's Most Innovative Companies in 2023
