Senior Backend Engineer

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.

As a global email provider, Yahoo Mail is the ultimate Consumer Inbox with over 220 million monthly active users. It is the best way to access your email and stay organized from a computer, phone or tablet. We create technology that changes the internet while handling billions of inbound connections per day to manage trillions of messages requiring petabytes of efficient storage.

Be the best consumer email platform to help users run the business of their life.

The Yahoo Mail engineering team develops solutions powering our mail brands, including a next-generation infrastructure that we are 100% moving to a native public cloud architecture.

The Mail Intelligence Org develops intelligent capabilities at scale to uncover interests, reveal habits, and personalize user journeys across Yahoo Mail and the entire Yahoo ecosystem.

We seek innovative, entrepreneurial, and passionate engineers dedicated to delivering exceptional user experiences. Your passion and ownership mindset are as vital as the high engineering standards, code quality, and world‑class architectural skills we uphold.

We manage billions of mail messages with advanced backend systems and algorithms, including NLP, GenAI, and ML techniques. Our infrastructure extracts information, creates enhanced content, and integrates diverse data sources to amplify key insights. This work presents rewarding technical challenges for high‑caliber engineers eager to tackle impactful problems.

Sounds exciting? Then, come join us!!

• Contribute to Mail Intelligence Mission:
  Support the development of AI/ML capabilities that enhance user personalization and insights within Yahoo Mail and the broader Yahoo ecosystem.
• Innovate and Personalize:
  Assist in building scalable solutions that identify user interests and habits, contributing to personalized user experiences.
• Collaboration:
  
  Work closely with cross‑functional teams in the USA to integrate backend solutions that enhance user experiences.
• System Architecture:
  Design robust system architectures using modern frameworks and cloud technologies.
• Performance Optimization:
  Continuously improve system performance and scalability.
• Technical Strategy:
  Collaborate with tech leads to align backend strategies with business goals.
• Feedback and Recovery:
  Implement mechanisms to handle system failures gracefully.
• Tradeoff Management:
  Balance cost, quality, and speed in backend solutions to optimize performance.

• Educational Background:
  You have a strong foundation in computer science or a related field, with a focus on backend technologies and cloud platforms.
• Technical
  
  Skills:
  
  You are proficient in building stateful and stateless systems  have experience in OOP languages such as Java, C++, or similar, and a strong understanding of computer science fundamentals, including Data Structures, Algorithms, OS, and Networking.
• Backend Engineering Expertise:
  You are skilled in designing and developing high‑performing, complex server applications.
• AI Tools Usage:
  You have experience with AI development tools such as Cursor, Copilot, and Claude.
• Problem‑Solving Ability:
  You possess strong analytical skills and a knack for solving complex backend challenges using innovative approaches.
• Collaboration:
  
  You are a team player who can work effectively with cross‑functional teams, including tech leads and architects, to deliver high‑quality backend solutions.
• Passion for Innovation:
  You are enthusiastic about leveraging backend engineering to drive innovation and enhance user experiences across Yahoo's ecosystem.
• Attention to Detail:
  You maintain high standards for system quality and are committed to delivering robust, scalable solutions.
• Continuous Learning:
  You are eager to stay updated with the latest advancements in backend engineering and apply them to improve Yahoo's products…