Apollo

Staff Software Engineer, AI Runtime

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We’re seeking a Staff Software Engineer to help power the future of agentic AI workflows. You’ll take our MCP Server to the next level, turning it into an enterprise-grade service that lets diverse tools and systems be exposed effortlessly to AI agents. Looking ahead, you’ll also help architect the MCP Gateway—a new layer that will route requests across tools, enforce policies, and provide the runtime foundation for scalable multi-agent systems. Along the way, you’ll tackle challenges in scalability, performance, and developer experience to ensure our platform feels seamless, powerful, and enterprise-ready.

Senior Solutions Architect

We’re seeking a Staff Software Engineer to help power the future of agentic AI workflows. You’ll take our MCP Server to the next level, turning it into an enterprise-grade service that lets diverse tools and systems be exposed effortlessly to AI agents. Looking ahead, you’ll also help architect the MCP Gateway—a new layer that will route requests across tools, enforce policies, and provide the runtime foundation for scalable multi-agent systems. Along the way, you’ll tackle challenges in scalability, performance, and developer experience to ensure our platform feels seamless, powerful, and enterprise-ready.<h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">About the Team</h3>The Graph DX AI Runtime Team builds and maintains the MCP Server and Gateway—the backbone of agent-to-tool communication and the routing layer that keeps everything flowing. We make it simple for developers to wire up agents, orchestrate workflows, and scale interactions reliably. Our focus is on speed, security, and seamless integration, so teams can spend less time managing infrastructure and more time building intelligent experiences.<h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">What You'll Do</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Architect and scale an enterprise AI/MCP Server and Gateway that powers multi-agent workflows across Apollo, including routing, orchestration, and integration boundaries.</li><li class="leading-relaxed">Design and implement robust server infrastructure to ensure reliability, performance, and security at scale.</li><li class="leading-relaxed">Build and maintain tools for agent discovery, communication, and coordination.</li><li class="leading-relaxed">Define deployment strategies and runtime optimizations to maximize efficiency and minimize operational overhead.</li><li class="leading-relaxed">Develop frameworks and patterns that enable seamless multi-agent collaboration and AI-driven orchestration.</li><li class="leading-relaxed">Integrate observability, logging, and monitoring for full visibility into server and agent behavior.</li><li class="leading-relaxed">Explore and implement AI-enhanced developer workflows to optimize orchestration and agent interactions.</li><li class="leading-relaxed">Collaborate with teams across Apollo to ensure the MCP Server meets evolving product and developer needs.</li></ul><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Technical Challenges You'll Tackle</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Architect and scale the MCP Gateway—Apollo’s routing layer for agentic workflows—ensuring tools and services can be discovered, invoked, and orchestrated reliably across diverse environments.</li><li class="leading-relaxed">Design and implement high-performance routing infrastructure with reliability, scalability, and security at its core.</li><li class="leading-relaxed">Build and maintain routing patterns and coordination mechanisms that let agents interact with the right tools at the right time.</li><li class="leading-relaxed">Define deployment strategies and runtime optimizations to minimize latency and operational overhead.</li><li class="leading-relaxed">Explore and implement AI-driven routing strategies to optimize context retrieval, reduce cost, and improve decision accuracy.</li><li class="leading-relaxed">Collaborate with teams across Apollo to ensure the MCP Server and Gateway integrate seamlessly with Apollo’s control plane for AI tools.</li><li class="leading-relaxed">Integrate observability and monitoring into the routing layer to provide full visibility into traffic flows, tool availability, and agent interactions.</li></ul><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Who You Are</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Expertise in agent-to-tool orchestration, routing, and coordination in scalable, fault-tolerant systems.</li><li class="leading-relaxed">Strong background in distributed systems, server architecture, and high-performance backend development.</li><li class="leading-relaxed">Proven experience with protocol design, message routing, and server-side orchestration frameworks.</li><li class="leading-relaxed">Experience building and maintaining robust runtime infrastructure that supports AI-driven workflows and enables reliable agent-to-tool interactions.</li><li class="leading-relaxed">Proven experience with protocol design, message routing, and building server-side frameworks that enable scalable, reliable multi-tool agent workflows.</li><li class="leading-relaxed">Hands-on experience with observability, monitoring, and debugging frameworks for complex systems.</li><li class="leading-relaxed">Passion for clean, maintainable code, high system reliability, and scalable architecture.</li><li class="leading-relaxed">Experience in strategic system design, making architectural trade-offs, and planning for long-term scalability and maintainability.</li><li class="leading-relaxed">Strong technical leadership and mentorship, including guiding junior engineers and driving engineering best practices across teams.</li><li class="leading-relaxed">Ability to influence cross-team architecture decisions and align engineering efforts with product and business objectives.</li><li class="leading-relaxed">Production ownership experience: leading incident response, debugging, and performance optimization in high-impact backend systems.</li></ul><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Bonus Points</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Exposure to AI/ML-enabled developer tooling or autonomous system orchestration.</li><li class="leading-relaxed">Familiarity with cloud-native architectures, containerization, or orchestration frameworks.</li><li class="leading-relaxed">Experience with performance optimization and cost-efficient scaling of high-throughput distributed systems.</li></ul>At Apollo, we strive to provide competitive, market-informed compensation whilst ensuring consistency within the team in each country. We make hiring decisions based on your skills, experience, and our overall assessment of what we learned during the hiring process. In addition to the U.S. base salary range, we also provide equity and benefits.Apollo offers all U.S. employees a choice of 3 Anthem Blue Cross medical plans and California residents can also choose from an additional 2 Kaiser medical plans. Dental and Vision benefits are provided by Sun Life Financial.Equal Opportunity: Apollo is proud to be an equal opportunity workplace dedicated to pursuing and hiring a talented and diverse workforce.Privacy: California residents applying for positions at Apollo can see our privacy policy <a href="https://www.apollographql.com/CCPA-Privacy-Notice-for-Employees.pdf" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">here</a>.E-Verify: Apollo is an E-Verify employer and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the U.S. For more information, please visit <a href="https://www.e-verify.gov/" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">E-Verify.</a>

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- This assessment gives us an idea of your C++ skills - Companies that evaluate this skillset in interviews: Rockstar Games, Ubisoft, Mayhem Studios, etc. - 10 Multiple Choice questions - Average time to complete: 7 to 10 minutes

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PayPay's Referral Hiring Program encourages applications from individuals referred by current PayPay employees. The company, a rapidly growing FinTech firm with over 70M users and a diverse team from 50+ countries, operates with a 'Working From Anywhere' policy within Japan, offering international-level salaries and benefits. They seek candidates who align with their 'PayPay 5 senses' work values and are eager to contribute to creating the No. 1 fintech company.

PayPay is a fintech company that has grown to over 65M users since its launch in 2018. Our team is hugely diverse with members from over 50 different countries. We are looking for people who can embrace this challenge, refresh the product at breakneck speed and promote PayPay with professionalism and passion.

Accounting

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Accounting Planning (New Service/System Planning)

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DX Planning Promotion Manager

<h1 class="text-3xl md:text-4xl font-extrabold mt-6 mb-4 text-gray-900 tracking-tight">About PayPay's Referral Hiring Program</h1>At PayPay, we are strengthening our referral hiring activities (hiring through referrals from employees)! To be eligible for this program, applications must be made based on referral from an acquaintance or a friend who is currently working for PayPay.If you can relate to the <a href="https://about.paypay.ne.jp/career/en/work-style/" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">"PayPay 5 senses"</a> which are important work values for PayPay employees, you will surely enjoy working in this environment! Let's create the No. 1 fintech company together!To apply for a job opening, please click on the “ENTRY” button on this page and fill in the necessary information. The PayPay Hiring team will be in touch with you soon!*1 To apply via this program, you need to fill in the name of the employee working at PayPay (the person who is referring you to the company).*2 After your application is complete, we may ask the employee you have stated in the form to confirm whether or not he/she has introduced you to the job opening.*3 This form must be completed by the applicant (no substitutions)---<h1 class="text-3xl md:text-4xl font-extrabold mt-6 mb-4 text-gray-900 tracking-tight">About PayPay</h1>PayPay is a FinTech company that has grown to over 70M (as of July 2025) users since its launch in 2018. Our team is hugely diverse with members from over 50 different countries.OUR VISION IS UNLIMITED_We dare to believe that we do not need a clear vision to create a future beyond our imagination.PayPay will always stay true to our roots and realize a vision (future) that no one else can imagine by constantly taking risks and challenging ourselves. With this mindset, you will be presented with new and exciting opportunities on a daily basis and have the opportunity to grow and reach new dimensions that you could never have imagined.We are looking for people who can embrace this challenge, refresh the product at breakneck speed and promote PayPay with professionalism and passion.About our working style, we had introduced a new personnel system called WFA (Working From Anywhere*). At PayPay, we work fully remotely in Japan. Therefore, the working place or your living place doesn't matter. Even if you are living in a local area, the salary and benefit package will be at an international level while you enjoy working with world class colleagues. You will find such a way of working at PayPay!*This WFA policy is applicable only within Japan.---<h1 class="text-3xl md:text-4xl font-extrabold mt-6 mb-4 text-gray-900 tracking-tight">Six elements for the ideal candidates at PayPay</h1><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Six elements for the ideal candidates at PayPay</h2>【Unparalleled speed】Discover for yourself the important things that need to be done and implement ways to reach the best results at the fastest speed possible for the organization.【Commitment】As a professional, commit to the growth and business goals of the organization and create impactful results by your ownership.【Logical thinking】Think logically and structurally to bring real communication.【Curiosity and questioning mind】Keep your curiosity about new things and your challenges along with a continuous questioning mind and enjoy such circumstances in a future-oriented manner.【Problem solving】Take a proper approach towards both explicit and potential business/organization challenges to lead solutions involving others.【True opinion and communication skill】Communicate your opinions to others in a flat manner to ensure mutual understanding and to keep things moving forward.---<h1 class="text-3xl md:text-4xl font-extrabold mt-6 mb-4 text-gray-900 tracking-tight">Location</h1>Basically we work fully remotely in Japan (only within Japan)---<h1 class="text-3xl md:text-4xl font-extrabold mt-6 mb-4 text-gray-900 tracking-tight">Hiring Process</h1><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Application Review</li><li class="leading-relaxed">1 - 3 Interviews (online)</li><li class="leading-relaxed">After you passed the 1st interview, you will have a reference check.</li><li class="leading-relaxed">An aptitude test, code challenge (online) and some assignments may be happening depending on the positions you apply.</li><li class="leading-relaxed">Those details will be explained after the application review.</li></ul>---<h1 class="text-3xl md:text-4xl font-extrabold mt-6 mb-4 text-gray-900 tracking-tight">Other Information:</h1><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed"><a href="https://insideout.paypay.ne.jp/" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">PayPay Inside-Out (Corporate Blog) /JP</a></li><li class="leading-relaxed"><a href="https://insideout.paypay.ne.jp/en/" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">PayPay Inside-out (Corporate Blog) /ENG</a></li><li class="leading-relaxed"><a href="https://blog.paypay.ne.jp/" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">PayPay Product Blog /JP</a></li><li class="leading-relaxed"><a href="https://blog.paypay.ne.jp/en/" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">PayPay Product Blog /ENG</a></li></ul>

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This assessment gives us an idea of your C++ skills- Companies that evaluate this skillset in interviews: Rockstar Games, Ubisoft, Mayhem Studios, etc.- 10 Multiple Choice questions- Average time to complete: 7 to 10 minutes

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