[Remote] Senior Platform Software Engineer

Note: The job is a remote job and is open to candidates in USA. Apostra is building an AI-native advertising marketplace that enables advertisers, media owners, and their agents to discover and act on diverse media. The Senior Platform Software Engineer will improve engineering productivity, reliability, and scalability through internal tooling, infrastructure, developer experience, and platform engineering, while also contributing to marketplace product features and AI-enabled systems.

Responsibilities

• Improve developer productivity through investments in tooling, automation, and engineering workflows
• Design and maintain scalable build systems, CI/CD pipelines, and deployment infrastructure
• Improve the health and performance of our monorepo and shared engineering libraries
• Enhance local development workflows to reduce friction across the engineering team
• Build reusable infrastructure and internal tooling that accelerates product development
• Monitor system performance and resolve bottlenecks across services and developer workflows
• Partner with engineers across the organization to identify opportunities for platform improvements
• Contribute production code across our AI-native advertising marketplace
• Help design scalable APIs and distributed systems supporting both human users and AI agents
• Collaborate with product and design to ship customer-facing capabilities
• Participate in architectural discussions around agent communication, authentication, and marketplace infrastructure
• Help evaluate emerging AI frameworks, protocols, and engineering patterns where appropriate

Skills

• 5+ years of professional software engineering experience, or equivalent demonstrated experience building and operating production systems
• Strong TypeScript and Node.js experience
• Active, hands-on use of AI tools in your engineering workflow, with a track record of using AI to accelerate development, explore solutions, and improve engineering productivity
• Experience designing scalable systems and developer infrastructure
• Experience improving CI/CD pipelines, build systems, or developer tooling
• Strong understanding of distributed systems and API design
• Experience diagnosing performance issues across applications and infrastructure
• Comfortable owning projects from concept through production
• Excellent collaborator who enjoys working across platform and product engineering
• Experience with Turborepo, Nx, or large monorepo architectures
• Kubernetes experience
• Google Cloud Platform / AWS
• GitHub Actions
• Observability tooling (Grafana, Prometheus, OpenTelemetry, flame graphs)
• PostgreSQL, Redis, or BigQuery
• Experience building AI-enabled products, agent frameworks, MCP servers, or related tooling

Benefits

• Health & wellness: Comprehensive medical, dental, and vision coverage with significant employer contribution; short- and long-term disability coverage; health savings/flexible spending options
• Retirement: Employer-matched retirement savings plan (401(k) or RRSP)
• Time off: Generous paid time off, statutory holidays, and year-end office closure
• Parental leave: 13 weeks fully paid (eligibility requirements apply)
• Remote work: Company-provided home office equipment, setup stipend, and access to WeWork spaces
• Equity: Stock options

Company Overview