Staff Software Engineer

Union.ai; United States; On-site; USD 212,202 - 270,000; Full time

Benefits offered by this job

Excellent medical

Generous dental and vision plans

Meaningful equity

Unlimited time off + 12 company harmon

401K match

12 weeks paid parental leave

Flexible work schedule

Lunch provided onsite

Job summary

Union.ai is seeking a senior software engineer in Bellevue, WA to help shape the next generation of ML tooling. You will lead the design, implementation, and delivery of scalable features across front-end and back-end systems, collaborating with data scientists and engineers to create high-impact solutions.

This role offers a competitive salary and benefits, with a focus on delivering production-ready tools used to build and run massive AI workflows across multiple clouds and on-prem

Responsibilities

• Forge the future of ML tooling and improve usability for developers.
• Architect, code, and design scalable back-end and front-end solutions.
• Deliver robust APIs and ensure a seamless user experience across the platform.
• Act as a technical liaison across teams and participate in design reviews.
• Drive complex projects to completion with a proactive, independent mindset.

Job description

At Union, we are solving one of the hardest challenges in AI infrastructure today: enabling high-velocity iteration while maintaining seamless production-readiness for AI workloads at scale.

Flyte, the open-source project we steward, has emerged as the modern standard for data and AI orchestration, and is trusted by leading technology organizations including LinkedIn, Stripe, and Wayve to run millions of mission-critical workflows on the platform. These workflows comprise data preparation, model training, and scaled inference spanning thousands of GPUs, all major clouds, and on-premise infrastructure.

We have a technical founding team who created Flyte while at Lyft, a deep bench of infrastructure experts from top companies, and have raised from top investors like NEA and Nava Ventures.

Duties

Forge the future of Machine Learning (ML) tooling, infusing unique insights into feature development and enhancing usability. Solve complex, large-scale problems. Steer our technical direction, making strategic decisions on architecture, technologies, and processes. Code, design, and architect, establishing the benchmark for quality and innovation within the team. Utilize comprehensive expertise in both front-end and back-end development to engineer high-quality, scalable, and maintainable solutions. Craft robust APIs and deliver seamless user experience across our platform. Champion the creation of user‑centric features by leveraging deep understanding of developer tools and frameworks. Address the needs and challenges of data scientists and engineers, advocating for user‑centric design and functionality at every development phase. Act as a technical liaison across teams, enriching collaborative efforts with insights and expertise. Participate actively in code and design reviews, ensuring adherence to the highest standards of code quality and performance. Exhibit a proactive mindset with a focus on impactful work, addressing urgent needs within the team. Navigate and solve complex problems independently, driving projects to completion.

OTHER

Job Site: Bellevue, WA;

40 hours/week;

Salary: $212,202 - $270,000 per year.

Requisition Number: EXT9504598

And reference the job title of the role and requisition number.

Benefits & Belonging

At Union.ai we know that employees who feel their best can build amazing things and we are proud to offer best in class benefits that will continually evolve and grow as the needs of our employees do. Benefits may vary based on country.

• Excellent medical - We pay 100% of your premiums and 90% for your dependents
• Generous dental and vision plans- We pay 90% of the premiums for you and your dependents
• Meaningful equity in the form of options – all employees are owners here
• Unlimited time off + 12 company holidays
• 401K match - Union.ai matches 100% of contributions up to the first 3%, and 50% up to 5%
• 12 weeks paid parental leave for primary and secondary caregivers
• Flexible work schedule (some restrictions apply)
• For in office employees: Lunch provided onsite and well stocked kitchen with snacks and drinks.

We believe that our differences are what bring us together to achieve truly special outcomes. We strive to be inclusive and focus on building teams that embody that quality too. Union.ai is an equal‑opportunity employer and we encourage you to apply, even if your experience doesn’t align exactly with our job description.