Principal Software Systems Engineer

About Yahoo

Yahoo serves as a trusted guide for hundreds of millions of people globally, helping them achieve their goals online through our portfolio of iconic products. For advertisers, Yahoo Advertising offers omnichannel solutions and powerful data to engage with our brands and deliver results.

Yahoo Search is one of the most highly scaled applications on the planet. We hire world class engineers to support our ambitious product and platform goals. Our engineers work in a highly collaborative environment with a strong emphasis on technical excellence and innovation. This is a unique opportunity as we're reimagining the future of Search, to reinvent how users find information and accomplish their goals.

To achieve this vision, we're integrating new technology and expanding our infrastructure. This role demands strategic partnership, analytical thinking, exceptional planning and execution skills, ambitious innovation, obsession with quality and user needs, and a passion for solving complex problems. If you're someone who enjoys being part of high performing teams, this role is for you!

As a Principal Software Systems Engineer you will play a critical role in delivering innovation and growth for the Search business by taking charge of the technical direction and execution of our full stack applications. You will be responsible for technical oversight of a team of engineers, performing code reviews to ensure code quality, performance, and security. Your technical expertise, leadership skills, and strategic vision will drive the success of our fullstack projects and contribute to the overall growth of the company.

You are passionate about software development and building highly scalable distributed solutions that enable delightful user experiences and measurable business growth. You will work closely with the product and design teams to plan, experiment and release features in collaboration with other engineering partners and business stakeholders. If you are interested in joining a world-class team of passionate people and industry veterans who care about code quality, architecture, design and user experience as much as having fun together, then we'd like to talk to you.

• Lead and own delivery of full stack applications within a cross‑functional product squad, ensuring alignment with business goals, security standards, and regulatory requirements
• Define and implement scalable, robust, and maintainable application architecture and system design
• Collaborate closely with product managers, UX/UI designers, engineers, and other stakeholders to understand business requirements and translate them into technical solutions
• Conduct code reviews and provide technical guidance to development teams to ensure adherence to architectural principles, coding standards, and best practices
• Evaluate third‑party tools, frameworks, and APIs for integration into applications, considering factors such as security, performance, and scalability
• Drive continuous improvement initiatives in application development processes, tooling, and automation to enhance efficiency, quality, and time‑to‑market
• Act as a technical mentor and coach to engineers, fostering a culture of learning, innovation, and excellence within the development team
• Communicate complex technical concepts and technical decisions effectively to both technical and non‑technical stakeholders, including senior management and external partners
• Lead the design and implementation of large‑scale digital transformation initiatives, with a focus on cloud migration, modernization, and scalability.

• 7+ years of hands‑on, professional software development experience specializing NodeJS, C++ and Python
• 5+ years of industry experience working with large‑scale distributed systems
• Strong experience with Graph
  
  QL, REST, HTTP, and the ability to design and implement maintainable APIs
• Strong experience with fullstack Java Script development with NodeJS, Express, Nest, Fastify, etc.
• Experience with cloud services, infrastructure, and serverless on common platforms such as AWS
  , GCP, Azure, etc
• Database experience with Postgre
  
  SQL or similar…