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Principal Engineer

Job Overview

Location

USA

Job Type

Full-time

Category

Software Engineer

Date Posted

February 28, 2026

Full Job Description

đź“‹ Description

  • • We are seeking a highly skilled and experienced Principal Engineer to join a dynamic team focused on architecting and building cutting-edge, large-scale, real-time data systems. This critical role is instrumental in powering a modern security platform, addressing complex challenges at the intersection of distributed systems, real-time data processing, and security intelligence. As a Principal Engineer, you will be entrusted with significant ownership, driving core architectural decisions, designing and implementing distributed streaming infrastructure from its foundational stages, and significantly shaping the long-term technical strategy of the organization.
  • • Your primary responsibility will be to architect and develop robust, large-scale real-time data processing systems. This involves leveraging advanced technologies like Apache Flink to build systems capable of handling immense volumes of data with low latency and high throughput. You will be at the forefront of designing highly reliable distributed systems that are resilient to failures and can operate seamlessly under demanding conditions.
  • • The role demands exceptional coding proficiency, requiring you to write production-grade code primarily in Java, with a strong preference and expectation for production experience in Rust. This dual-language capability will be essential for optimizing performance and leveraging the strengths of each language in different components of the system.
  • • You will play a pivotal role in leading system design discussions, fostering a collaborative environment where innovative solutions are explored and debated. A key aspect of this leadership is defining and upholding engineering standards and best practices across the team, ensuring consistency, maintainability, and scalability in all developed solutions.
  • • Taking full ownership of scalability, performance optimization, reliability, and observability across all services is paramount. This includes proactively identifying bottlenecks, implementing efficient solutions, and establishing comprehensive monitoring and alerting mechanisms to ensure the health and performance of the data systems.
  • • As a Principal Engineer, you will also serve as a technical mentor to other engineers, actively contributing to their growth and elevating the overall technical quality and expertise of the team. This involves sharing knowledge, providing guidance, and fostering a culture of continuous learning and improvement.
  • • Close collaboration with product managers and security stakeholders is essential. You will work hand-in-hand to deeply understand their requirements, translate complex needs into resilient and effective technical solutions, and ensure that the data systems directly support the strategic goals of the security platform.
  • • You will be a key driver of long-term architectural decisions, contributing significantly to the technical roadmap planning. This involves anticipating future needs, evaluating emerging technologies, and making strategic choices that will position the platform for sustained growth and success.
  • • This opportunity is particularly compelling for individuals who thrive in environments with a degree of ambiguity, are comfortable taking end-to-end ownership of complex projects, and possess a proven track record of building scalable systems, ideally within the security domain or related fields. You will be instrumental in building and scaling mission-critical infrastructure, tackling intricate, real-world security challenges, and directly influencing the product direction and long-term technology strategy within a high-caliber engineering team.
  • • The ideal candidate will have a deep understanding of distributed systems principles, including consensus algorithms, fault tolerance, and distributed data management. Experience with message queues, event-driven architectures, and data warehousing concepts will be highly beneficial. You will be expected to contribute to the entire software development lifecycle, from initial design and prototyping through to deployment, monitoring, and ongoing maintenance.
  • • This role offers a unique chance to work on foundational elements of a security platform, where your contributions will have a direct and measurable impact on the company's ability to protect its users and data. You will be empowered to make significant technical decisions and see them through to implementation, fostering a sense of accomplishment and ownership.
  • • We are looking for someone who is not just a coder, but a systems thinker, a problem solver, and a leader who can inspire and guide others. Your ability to communicate complex technical concepts clearly to both technical and non-technical audiences will be crucial for success in this role.
  • • The systems you will be building are designed to process vast amounts of data in real-time, enabling immediate threat detection, anomaly identification, and proactive security measures. This requires a deep appreciation for performance, efficiency, and the critical nature of timely data delivery in a security context.
  • • You will be part of a lean, agile team where collaboration and rapid iteration are key. The fast-paced environment will provide ample opportunities to learn, grow, and make a significant impact. Your expertise will be invaluable in navigating the complexities of building a world-class security platform.

Skills & Technologies

Java
Rust
Kafka
Senior
Onsite

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About Weekday 1

Weekday 1 is a company focused on providing innovative solutions within the [Industry - e.g., technology, education, finance] sector. Their core business model revolves around [Business Model - e.g., developing SaaS products, offering consulting services, creating digital platforms] to address specific market needs. They aim to [Company Goal - e.g., streamline processes, enhance user experiences, drive digital transformation] for their clients. The company operates in a competitive landscape, differentiating itself through [Key Differentiators - e.g., proprietary technology, expert team, unique approach]. Weekday 1 is committed to [Values/Mission - e.g., fostering collaboration, delivering exceptional value, sustainable growth].

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