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Yahoo Mail is the ultimate consumer inbox with hundreds of millions of users. It's the best way to access your email and stay organized from a computer, phone or tablet. With its beautiful design and lightning fast speed, Yahoo Mail makes reading, organizing, and sending emails easier than ever.

*About Core Mail*

We build, enhance, and maintain one of the highest scaling email platforms on the planet. We are the first component in the mail back end, a middle tier, that contains the APIs and business logic through which virtually all mail operations flow. We implement REST APIs for our world-class mail clients (mobile, web, Yahoo, AOL, etc), standards-based protocols (IMAP, POP, etc) for generic mail clients, and industry leading back-end mail synchronization. We own the data platform in metadata, storage, and indexing. And we build even more supporting systems that are part of or support our array of serving and data components. We share about 20 components implemented in 4M lines of code.

We directly impact approximately 220 Million users every month, serving billions of requests a day across servers and cloud solutions across the world, and are critical to Yahoo's success. Our logged-in experience offers even greater value to the rest of Yahoo for serving highly customized experiences. We achieve high scale on each server using async technologies developed in house as well as from open source and cloud technologies. We take an industry leading number of connections, in the order of 100s of thousands on a single server or instance to achieve a very cost friendly footprint. We have a unique opportunity to do hard, challenging work, solving problems at a rare scale, innovating to meet our product and users future needs, and continually modernizing, while sustaining an essential service to users' daily lives.

This is a business critical and central platform to serve all Mail users at the center of Yahoo's core user base and revenue. Come join this amazing team of engineers to have a more direct impact on serving users and data at uniquely high scale, work on the next generation tech stack, and support innovative product experiences to grow users.

*A Lot About You*

We are looking for smart people, with strong CS fundamentals, that collaborate well, learn quickly, and value high quality code. The most successful engineers own and drive their tasks to completion, collaborate well to achieve their goal, can think through scenarios and edge cases, learn from our leadership, and understand the broader impact. If you are excited about the whole life-cycle of a product - designing, coding, testing, reviewing, launching, and troubleshooting, this is the place to be. You will learn and gain hands-on experience while engaged in projects with significant impact on the success of Yahoo.

*Your Day*

• Design, implement, test, and debug our continually evolving tech stack to scale and sustain a large scale distributed system.
• Design, implement, test, and debug features in mail supporting client features on a large scale distributed system; revise and refine as required.
• Lead project teams, derive implementation roadmap and milestones within business constraints, and execute with predictability and transparency.
• Personally implement significant works of complexity and size.
• Partner with leads and architects to solve our more challenging problems.
• Request and participate significantly in code reviews and part of our committer process.
• Participate in agile development with weekly sprints, planning and estimating work, daily standup, and retrospectives.
• Learn from a multitude of sources, including on the job project experience, reviewing code from others, team education sessions, collaborating with peers, frequently soliciting advice and shoulder reviews from leaders and architects, as well as online or class-based learning.
• Take initiative to identify, solve, and ursue problems to full completion.
• Promote and solicit ideas within project teams, incorporate into proposals, and champion ideas to seek buy-in from leads and managers.
• Contribute to best practices and work culture of our team.

*You Must Have*

• BS, MS, or PhD in Computer Science or related field with a strong record of academic achievement.
• Programming proficiency in a high level language (preferably Java or C ).
• Proficient in Computer Science fundamentals, including data structures, algorithms, OS and networking.
• 8 Years Experience
• Proficient in software engineering processes and tools for coding, testing, and debugging.
• Significant professional experience in Software Development of backend systems.
• Significant experience with object-oriented programming concepts, large-scale software architecture, networking and distributed systems, and UNIX/Linux environments.
• Significant experience designing and developing high performing complex server applications.
• Proven track record of technical leadership on complex projects and large roadmaps, including responsibility for design or architecture, breakdown of task for parallel execution, and leading a team of people, or extraordinarily complex or large solo efforts that cannot be parallelized.
• Excellent communication and collaborate well with a team and incorporate feedback from leaders.
• Enjoy helping people, remain friendly and constructive under stress.

*Ideal Candidate*

• Large scale distributed systems (in requests, users, compute, and data)
• Public cloud infrastructure (GCP, AWS, etc), design, provisioning, and deployments
• Web-scale in user base, traffic, and data
• Focus on backend REST APIs and business logic
• Asynchronous implementations (especially with HTTP clients and worker models)
• Multi-threaded programming and/or understanding contention issues
• Java development emphasis
• Containerization (Kubernetes), Build, Pipelines, and Deployment (CI/CD)
• SSL Certificates, authorization tokens, and debugging access issues

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.

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.

At Yahoo, we know that diversity makes us stronger. We are committed to a