About the RoleWe’re building the future of programmatic advertising through AI agents. Our Agentic Marketplace team is creating the infrastructure that enables AI agents to discover, negotiate, and transact media inventory autonomously. As a Senior Software Engineer, you’ll play a key role in building the core systems that power our agentic advertising platform. You’ll develop APIs, agent interfaces, and transaction systems that support both human users and AI agents as first-class participants. You’ll work at the intersection of advertising technology, distributed systems, and emerging AI agent frameworks—helping translate architectural vision into scalable, production-ready systems. This is a Fullstack (80/20 backend leaning), hands-on role. You’ll write production code, contribute to system design, and collaborate closely with a small, senior team to bring new agent-driven capabilities to life. Responsibilities<ul style=""><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Build and maintain scalable APIs for both human and AI agent clients</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Contribute to the development of agent interfaces, MCP servers, and A2A communication layers</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Implement systems that support real-time advertising transactions at scale</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Partner with Staff engineers to design robust, extensible architectures</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Collaborate with product and design to develop clear, agent-friendly API contracts</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Integrate and experiment with emerging agent frameworks and protocols</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Participate in design reviews and provide thoughtful technical input</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Write high-quality, maintainable code and improve system reliability</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Identify edge cases in agent behavior and help design safeguards</li></ul> Qualifications<ul style=""><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">5+ years of experience building backend or fullstack systems</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Strong experience with API development (REST or event-driven systems)</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Proficiency in TypeScript/Node.js and React</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Experience working with cloud platforms (GCP or AWS)</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Familiarity with distributed systems concepts (scalability, reliability, observability)</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Interest in or exposure to AI agent systems, LLMs, or autonomous workflows</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Ability to collaborate effectively in a small, fast-moving team</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Strong problem-solving skills and attention to detail</li></ul> Nice to have:<ul style=""><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Experience with MCP, A2A, or similar communication protocols</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Background in advertising technology or marketplace platforms</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Experience building systems with real-time or high-throughput requirements</li></ul> Tech Stack<ul style=""><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">API Layer: TypeScript/Node.js, REST and event-driven services</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Agent Interfaces: MCP servers and A2A protocol handlers</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Data: PostgreSQL, BigQuery, Cloud Storage, Redis</li></ul> CompensationThe salary range for this role is $130k-$190k USD; $140k-$200k CAD.These ranges span multiple location-based salary bands across the US and Canada. Candidates are aligned to a narrower range based on geographic market compensation data, and final offers reflect demonstrated skills, experience, and role expectations. Benefits &amp; PerksDetails vary by location (USA/Canada), but all employees receive:<ul style=""><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Health &amp; wellness: Comprehensive medical, dental, and vision coverage with significant employer contribution; short- and long-term disability coverage; health savings/flexible spending options</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Retirement: Employer-matched retirement savings plan (401(k) or RRSP)</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Time off: Generous paid time off, statutory holidays, and year-end office closure</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Parental leave: 13 weeks fully paid (eligibility requirements apply)</li><li style="font-size:11pt;margin:3px 0px;letter-spacing:0.25px;line-height:1.6;">Equity: Stock options</li></ul> A Note To ApplicantsWe believe that all people are capable of great things. We encourage you to apply even if you do not meet all of the requirements that are listed within this job description.

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Senior Software Engineer, Agentic Marketplace

About the RoleWe’re building the future of programmatic advertising through AI agents. Our Agentic Marketplace team is creating the infrastructure that enables AI agents to discover, negotiate, and transact media inventory autonomously. As a Senior Software Engineer, you’ll play a key role in building the core systems that power our agentic advertising platform. You’ll develop APIs, agent interfaces, and transaction systems that support both human users and AI agents as first-class participants. You’ll work at the intersection of advertising technology, distributed systems, and emerging AI agent frameworks—helping translate architectural vision into scalable, production-ready systems. This is a Fullstack (80/20 backend leaning), hands-on role. You’ll write production code, contribute to system design, and collaborate closely with a small, senior team to bring new agent-driven capabilities to life. Responsibilities<ul><li>Build and maintain scalable APIs for both human and AI agent clients</li><li>Contribute to the development of agent interfaces, MCP servers, and A2A communication layers</li><li>Implement systems that support real-time advertising transactions at scale</li><li>Partner with Staff engineers to design robust, extensible architectures</li><li>Collaborate with product and design to develop clear, agent-friendly API contracts</li><li>Integrate and experiment with emerging agent frameworks and protocols</li><li>Participate in design reviews and provide thoughtful technical input</li><li>Write high-quality, maintainable code and improve system reliability</li><li>Identify edge cases in agent behavior and help design safeguards</li></ul> Qualifications<ul><li>5+ years of experience building backend or fullstack systems</li><li>Strong experience with API development (REST or event-driven systems)</li><li>Proficiency in TypeScript/Node.js and React</li><li>Experience working with cloud platforms (GCP or AWS)</li><li>Familiarity with distributed systems concepts (scalability, reliability, observability)</li><li>Interest in or exposure to AI agent systems, LLMs, or autonomous workflows</li><li>Ability to collaborate effectively in a small, fast-moving team</li><li>Strong problem-solving skills and attention to detail</li></ul> Nice to have:<ul><li>Experience with MCP, A2A, or similar communication protocols</li><li>Background in advertising technology or marketplace platforms</li><li>Experience building systems with real-time or high-throughput requirements</li></ul> Tech Stack<ul><li>API Layer: TypeScript/Node.js, REST and event-driven services</li><li>Agent Interfaces: MCP servers and A2A protocol handlers</li><li>Data: PostgreSQL, BigQuery, Cloud Storage, Redis</li></ul> CompensationThe salary range for this role is $130k-$190k USD; $140k-$200k CAD.These ranges span multiple location-based salary bands across the US and Canada. Candidates are aligned to a narrower range based on geographic market compensation data, and final offers reflect demonstrated skills, experience, and role expectations. Benefits &amp; PerksDetails vary by location (USA/Canada), but all employees receive:<ul><li>Health &amp; wellness: Comprehensive medical, dental, and vision coverage with significant employer contribution; short- and long-term disability coverage; health savings/flexible spending options</li><li>Retirement: Employer-matched retirement savings plan (401(k) or RRSP)</li><li>Time off: Generous paid time off, statutory holidays, and year-end office closure</li><li>Parental leave: 13 weeks fully paid (eligibility requirements apply)</li><li>Equity: Stock options</li></ul> A Note To ApplicantsWe believe that all people are capable of great things. We encourage you to apply even if you do not meet all of the requirements that are listed within this job description.

Senior Software Engineer, Agentic Marketplace

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