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Principal Software Engineer

United States, Cupertino Employment contract 172000.00 - 349000.00 USD / Year · Job Posted June 16, 2026
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Job Description

We are seeking a talented and motivated Principal Engineer to join our dynamic team in building carrier-grade networking solutions on a multi-tenant SaaS platform. In this role, you will play a pivotal role in designing, developing, and optimizing our core services. As a key member of our engineering group, you will work on cutting-edge technologies, collaborate with cross-functional teams, and drive impactful solutions. You will leverage your deep understanding of networking principles, distributed systems, and cloud technologies to deliver a reliable, performant, and secure solution to our global customer base.

Job Responsibility

  • Work with product managers, architects, and other engineers to understand the software requirements, and define corresponding functional and design specifications
  • Drive technical decisions and contribute to the overall strategy
  • Design, develop, test, deploy, and maintain high-quality, production-grade software, with a strong emphasis on backend systems
  • Write clean, efficient, and well-documented code
  • Design and implement micro-services for high availability, scalability, performance, and security within our SaaS platform
  • Identify and resolve complex performance bottlenecks and system issues
  • Apply deep knowledge of networking protocols (e.g., TCP/IP, HTTP/S, DNS, NAT), network security, and cloud networking concepts to build robust and secure solutions
  • Design and implement solutions leveraging cloud platforms (e.g., AWS, Azure, GCP) and containerization technologies (e.g., Kubernetes, Docker)
  • Collaborate effectively with cross-functional teams including product management, QA, SRE, and technical assistance team
  • Champion best practices in software development, including code reviews, testing methodologies, CI/CD, and DevOps principles
  • Troubleshoot and resolve complex technical issues in a timely and effective manner, often in production environments
  • Stay abreast of emerging technologies and industry trends in networking, SaaS, and software engineering
  • Propose and prototype new ideas and solutions
  • Create and maintain comprehensive technical documentation for designs, APIs, and operational procedures

Requirements

  • A minimum of 15 years of professional software development experience, with a significant portion focused on backend systems and distributed applications
  • Proven expertise in one or more backend programming languages such as Golang (preferred), Java or Python
  • Deep understanding of networking protocols, network architectures, network security, and common networking concepts is essential
  • Proven experience in designing, building, and deploying scalable microservices using Docker, Kubernetes, etc.
  • Significant experience in building, deploying, and operating scalable SaaS applications in a Public Cloud (AWS/GCP) environment
  • Strong understanding of distributed systems principles, including concurrency, scalability, fault tolerance, and consistency
  • Experience with various database technologies, including relational (e.g., PostgreSQL, MySQL) and NoSQL (e.g., DynamoDB, Redis) databases
  • Experience designing, building, and consuming RESTful APIs and other integration technologies like WebSocket, Kafka, etc.
  • Excellent analytical and problem-solving skills
  • Strong verbal and written communication skills
  • Demonstrated ability to provide technical leadership, mentor other engineers, and drive projects to successful completion

Nice to have

Experience with network security principles, threat modelling, and secure coding practices

What we offer

  • Health & Wellbeing: comprehensive suite of benefits supporting physical, financial and emotional wellbeing
  • Personal & Professional Development: programs catered to helping you reach any career goals
  • Unconditional Inclusion: flexibility to manage work and personal needs
  • Variable incentives may also be offered

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