MNTN · 3 hours ago
Senior Software Engineer, API Platform
United States
Full-time
Remote
Senior Level
5+ years expMNTN is a company focused on Connected TV advertising, known for its innovative technology and people-first culture. They are seeking a Senior Software Engineer to join their API Squad, responsible for building and operating scalable APIs that support both external partners and internal teams, enhancing the overall user experience.
AdvertisingMarketingReal TimeSoftware
Responsibilities
Be part of a team that focuses on our next-generation API platform
Architect and evolve large-scale backend systems, foundational platform services, and API ecosystems that enable backend and frontend teams to move faster with consistency and reliability. Familiar with API-first design, concepts such as Atomic API design
Define and refine domain models, service boundaries, and system interactions using domain-driven design (DDD) principles
Participate in technical discussions across engineering teams, driving alignment on architecture, standards, documentation, and long-term platform strategy
Design and drive implementation of scalable, observable, and fault-tolerant services—including caching, messaging, data pipelines, and service orchestration
Expert in Observability-first development
Partner with backend and frontend teams to ensure APIs and platform capabilities strongly support user experience and frontend architecture patterns (including MFE)
Conduct deep-dive technical investigations, performance tuning, and root-cause analysis for complex systems in production
Establish best practices for testing, release engineering, and operational excellence across the engineering organization
Champion platform security, reliability, scalability, and long-term maintainability in every stage of the development lifecycle
Qualification
Required
5+ years building and scaling backend systems, distributed architectures, and API-driven platforms, with a strong record of delivering reliable, adaptable services
Apply strict enforcement of best practices and ensure adherence to public API standards, such as OpenAPI
Deep expertise in API strategy and design (REST, GraphQL, event-driven), including versioning, governance, and lifecycle management across domains
Hands-on experience with modern backend languages (Node.js, TypeScript) and the ability to guide teams on best practices and technology choices
Strong proficiency with relational databases—especially PostgreSQL—covering schema design, indexing, performance tuning, and data modeling
Solid understanding of cloud-native architectures (GCP preferred), IaC tools, security principles, identity/auth, and production observability
Comfort with development environments, scripting, debugging, and performance tuning, with a focus on automation and improving developer workflows
Strong knowledge of CI/CD, automated testing, Git workflows, and release processes to ensure reliable, high-quality deployments
Experience collaborating with UI/UX and frontend teams, with awareness of how API and domain design shape client architecture (including MFEs)
Excellent communication skills, able to translate complex architectural concepts into clear guidance for both technical and non-technical stakeholders
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
Company
MNTN
MNTN Performance TV is a CTV advertising platform with targeting, measurement, and optimization for amplifying marketers' performance goals.
201-500 employees
H1B Sponsorship
MNTN has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (4)
2024 (10)
2023 (10)
Funding
Current Stage
Public CompanyTotal Funding
$185.8MKey Investors
Mercato PartnersQualcomm VenturesBonfire Ventures
2025-05-22IPO
2022-02-01Series D· $119M
2017-05-19Convertible Note
Leadership Team
Mark Douglas
President & CEO
Patrick Pohlen
Chief Financial Officer
Recent News
legacy.thefly.com
2026-01-23
GlobeNewswire
2026-01-22
2026-01-20
Company data provided by crunchbase