# Senior Software Engineer - CDS

**Company:** [Mntn](https://hotfix.jobs/companies/mntn)
**Location:** Remote
**Role:** Backend Engineering
**Experience:** 5+ years
**Skills:** Java, Kotlin, Scala, SQL, REST APIs, Microservices, Kafka, Rust, Terraform, Distributed Systems
**Posted:** 2026-05-27

> Backend engineer building and operating high-scale Java/Kotlin services for ad serving and creative delivery pipelines. Own end-to-end systems including API design, ingestion, caching, and global delivery with strong focus on performance and reliability.

## Job Description

## 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
- Experience designing and operating high-scale, distributed systems
- Strong SQL fundamentals — schema design, indexing strategies, query optimization, and performance tuning
- Solid understanding of RESTful APIs and microservices architecture
- Familiarity with messaging systems (e.g., Kafka) and asynchronous processing patterns
- Comfort working across multiple technologies and services, even outside your primary language
- Product mindset — care about why you’re building something, not just what you’re building
- Practical use of AI-assisted development tools (Cursor, ChatGPT, LLM copilots) to improve speed and quality

## Nice-to-Haves
- Experience with Rust services, Terraform

## Compensation & 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

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**Apply:** https://hotfix.jobs/jobs/f35ca2f4-5120-41a3-b736-378fe46c98c6
**Canonical:** https://hotfix.jobs/jobs/f35ca2f4-5120-41a3-b736-378fe46c98c6