Union Software Engineer Jobs in Redmond, WA (NOW HIRING)

What You'll Do:

The Applications Engineering team in the Data Infrastructure organization builds AI-native analytics platforms and first-party applications that embed governed data directly into operational workflows. The team develops CoreWeave's internal data-native software products, transforming data into operational capability through intelligent interfaces, automation, and decision systems. This includes AI-native analytics platforms (e.g., UNION) and mission-critical applications such as capacity planning and scenario modeling. These systems encode CoreWeave's differentiated operating knowledge into software, enabling scalable, data-driven decision-making across the business.

About the role:

As a Senior Software Engineer, you will design and build production-grade, full-stack applications that make data accessible, actionable, and embedded within CoreWeave's core workflows. You will develop AI-enabled user experiences, scalable backend services, and intuitive interfaces that abstract away the complexity of underlying data systems. Day-to-day, you'll work across the stack - from React-based frontends to backend services running on Kubernetes - while integrating AI/LLM capabilities into real-world applications. This role offers high visibility and the opportunity to directly influence how data is consumed and operationalized across the company.

Who You Are: 

• 7+ years of experience building production-grade software applications, including both backend services and modern web frontends
• Strong proficiency in backend programming languages (Python, Go, Java, C#) and frontend programming languages (JavaScript, TypeScript)
• Strong experience building modern frontend applications using frameworks such as React and Next.js
• Hands-on experience with containerization and deployment tooling (e.g., Docker, Helm)
• Experience building and operating APIs and services (e.g., REST, gRPC) with a focus on performance and reliability
• Experience developing and deploying AI/ML/LLM-powered applications in production environments
• Familiarity with data platforms and tools (e.g., Spark, Kafka, or similar systems) and integrating them into application workflows
• Experience implementing software development best practices, including CI/CD, automated testing, observability, and secure application design
• Ability to take ownership of complex systems end-to-end, from design through deployment and iteration

Preferred: 

• Experience building AI-native applications such as text-to-SQL interfaces, copilots, or automated insight-generation systems
• Experience designing and building scalable, distributed systems deployed in cloud-native environments (e.g., Kubernetes)
• Familiarity with real-time data processing or streaming architectures
• Experience building internal platforms or tools that enable self-service analytics or decision-making 

Wondering if you're a good fit? We believe in investing in our people, and value candidates who can bring their own diversified experiences to our teams - even if you aren't a 100% skill or experience match. Here are a few qualities we've found compatible with our team. If some of this describes you, we'd love to talk. 

• You love building user-facing applications that turn complex data into intuitive experiences
• You're curious about applying AI to real-world problems, not just prototypes
• You're an expert in designing and shipping systems that are both scalable and usable

Why CoreWeave?

At CoreWeave, we work hard, have fun, and move fast!  We're in an exciting stage of hyper-growth that you will not want to miss out on. We're not afraid of a little chaos, and we're constantly learning. Our team cares deeply about how we build our product and how we work together, which is represented through our core values: 

• Be Curious at Your Core
• Act Like an Owner
• Empower Employees
• Deliver Best-in-Class Client Experiences
• Achieve More Together

We support and encourage an entrepreneurial outlook and independent thinking. We foster an environment that encourages collaboration and provides the opportunity to develop innovative solutions to complex problems. As we get set for take off, the growth opportunities within the organization are constantly expanding. You will be surrounded by some of the best talent in the industry, who will want to learn from you, too. Come join us!  

The base salary range for this role is $182,000 to $242,000. The starting salary will be determined based on job-related knowledge, skills, experience, and market location. We strive for both market alignment and internal equity when determining compensation. In addition to base salary, our total rewards package includes a discretionary bonus, equity awards, and a comprehensive benefits program (all based on eligibility).