Full Stack Engineer II, Platforms

It takes powerful technology to connect our brands and partners with an audience of hundreds of millions of people. Whether you’re looking to write mobile app code, engineer the servers behind our massive ad tech stacks, or develop algorithms to help us process trillions of data points a day, what you do here will have a huge impact on our business—and the world.

A Little About Us

The Security Platforms team enables Yahoo technology teams to develop, deploy, and operate products efficiently and reliably on an integrated, scalable, and secure platform. Security Platform solutions enable and accelerate Yahoo's strategic initiatives by providing defense-in-depth security capabilities from the ground up. We foster an AI-augmented engineering culture where continuous learning, automation, and continuous delivery empower engineers to protect millions of users world-wide.

Responsibilities

• Ideate, design, and build scalable security platform features and microservices in Java, Go, and JavaScript/Node to enhance Yahoo's resilience against threat actors.

• Leverage Yahoo approved AI development tools to accelerate code implementation, write comprehensive unit/functional tests, and refactor security infrastructure.

• Apply AI-driven diagnostics and automated static analysis to triage open-source vulnerability reports, remediate security flaws, and streamline routine code maintenance.

• Critically evaluate and validate AI-generated code outputs and test cases to ensure strict compliance with Yahoo security standards, performance benchmarks, and memory safety.

• Deliver clean, performant, and production-ready code with minimal guidance while actively participating in code reviews, technical planning, and agile story estimation.

• Troubleshoot complex software failures and operational issues across distributed Linux and public cloud environments (AWS/GCP), conducting root-cause analyses to prevent recurrence.

• Proactively identify manual engineering friction points and implement AI-assisted workflows or automation scripts to scale platform operations.

• Collaborate closely with security architects, product managers, and cross-functional engineering teams to translate defined technical security requirements into reliable operational solutions.

Basic Qualifications

• BS or MS in Computer Science, or a related technical discipline (or equivalent practical experience confirmed for background check requirements).

• 5+ years of hands-on software development experience building scalable applications or platform services.

• Primary technical proficiency in Java, with secondary experience in Go and/or JavaScript/Node.

• Proven experience utilizing AI-assisted development tools (e.g., Copilot, Cursor, Claude) to accelerate software feature implementation, testing, or debugging workflows.

• Core understanding of object-oriented design, distributed systems, networking fundamentals, web service APIs, and UNIX/Linux environments.

• Hands-on experience with public cloud platforms (AWS and/or GCP) and relational databases (SQL).

• Practical knowledge of web and network security concepts, including open-source vulnerability remediation.

• Focus on operational excellence, software quality, and security engineering impact within a collaborative agile squad.

Preferred Qualifications

• Familiarity with containerized applications and orchestration platforms such as Kubernetes and Docker.

• Working knowledge of Public Key Infrastructure (PKI) concepts, including Certificate Authorities (CA), x.509 certificates, PKCS, and Security Token Services (STS).

• Frontend engineering experience with modern JavaScript frameworks (e.g., React) for building internal web interfaces with cross-browser compatibility.

• Experience with cross-platform development across CPU architectures (x86_64, ARM64/Graviton), Linux distributions (RHEL 8+, AlmaLinux, Amazon Linux 2023), and cloud cost optimization initiatives.

• Interest or experience in building custom AI prompts, agents, or automated workflows for security engineering and vulnerability management.

The material job duties and responsibilities of this role include those listed above as well as adhering to Yahoo policies; exercising sound judgment; working effectively, safely and inclusively with others; exhibiting trustworthiness and meeting expectations; and safeguarding business operations and brand integrity.

At Yahoo, we offer flexible hybrid work options that our employees love! While most roles don’t require regular office attendance, you may occasionally be asked to attend in-person events or team sessions. You’ll always get notice to make arrangements. Your recruiter will let you know if a specific job requires regular attendance at a Yahoo office or facility. If you have any questions about how this applies to the role, just ask the recruiter!

Yahoo is proud to be an equal opportunity workplace. All qualified applicants will receive consideration for employment without regard to, and will not be discriminated against based on age, race, gender, color, religion, national origin, sexual orientation, gender identity, veteran status, disability or any other protected category. Yahoo will consider for employment qualified applicants with criminal histories in a manner consistent with applicable law. Yahoo is dedicated to providing an accessible environment for all candidates during the application process and for employees during their employment. If you need accessibility assistance and/or a reasonable accommodation due to a disability, please submit a request via the Accommodation Request Form (www.yahooinc.com/careers/contact-us.html) or call +1.866.772.3182. Requests and calls received for non-disability related issues, such as following up on an application, will not receive a response.

We believe that a diverse and inclusive workplace strengthens Yahoo and deepens our relationships. When you support everyone to be their best selves, they spark discovery, innovation and creativity. Among other efforts, our 11 employee resource groups (ERGs) enhance a culture of belonging with programs, events and fellowship that help educate, support and create a workplace where all feel welcome.

The compensation for this position ranges from $111,000.00 - $231,250.00/yr and will vary depending on factors such as your location, skills and experience.The compensation package may also include incentive compensation opportunities in the form of discretionary annual bonus or commissions. Our comprehensive benefits include healthcare, a great 401k, backup childcare, education stipends and much (much) more.

Currently work for Yahoo? Please apply on our internal career site.