Senior/Staff Software Engineer, Agentic Applications

Supio; Seattle (WA); Hybrid; USD 180,000 - 250,000; Full time

Benefits offered by this job

Health, Dental, Vision, and Life Ins.

401(k)

Flexible time off

Remote Work Day Tuesdays

Job summary

Supio, a Seattle-based AI platform for law firms, is hiring Senior and Staff Software Engineers for its Agentic Applications team. You will own end-to-end problems, build scalable systems, work across frontend and backend, and leverage AI to accelerate development.

The role emphasizes autonomy, collaboration with product and customers, and delivering high-impact, reliable software. Base salary ranges are provided by location, with compensation and benefits designed to align with market

Qualifications

• 8+ years of professional software engineering experience.
• Full-stack, with depth across frontend and backend, with strongest backend focus.
• Production AI experience with LLMs or agentic systems.
• Ownership and product judgment: drive work end-to-end, make tradeoffs.
• Clear communication, both written and in person.

Skills

8+ years software engineering

Full-stack with backend focus

Production AI experience

Ownership and product judgment

Clear communication

Job description

View all jobs Senior/Staff Software Engineer, Agentic Applications Seattle Hybrid San Francisco Hybrid Software Engineering Hybrid Full-time

About Us

Supio is a trusted AI platform purpose-built for law firms, reshaping how data drives impactful outcomes. Our innovative approach blends technology with deep legal expertise, making us a leader in our field. We go beyond surface-level AI to deeply understand our customers’ daily needs, empowering law firms with unparalleled data insights. Supio delivers human-level, accurate analysis of complex data and legal records, quickly and efficiently bringing critical insights when they matter most. Trusted by top litigation lawyers, our platform has supported over $1 billion in settlements. Headquartered in Seattle with an office in San Francisco, we raised $60M Series B in April 2025 led by Sapphire Ventures with Mayfield and Thomson Reuters Ventures, bringing total funding to $91M. We’re scaling rapidly and looking for exceptional talent to join us in this next phase of growth. We’re looking for passionate team members who are motivated by our mission and ready to help us achieve it.

Who we’re looking for

We’re looking for Senior and Staff Software Engineers to join the Agentic Applications team at Supio. You’ll build the software behind AI-powered products that legal professionals rely on for high-stakes work, so the code you ship has to be right. We hire full-stack engineers who’ve gone deep. You’re the person others turn to when a problem gets hard, with a strong backend foundation and the range to work across the rest of the stack. You work autonomously, partner well with product, design, and customers, and take a problem from fuzzy idea to shipped, operating software without waiting to be told what to build. You make good product calls and you leave the code, the system, and the team better than you found them. We’re a small team and the impact is direct. You’ll work next to engineers who’ve built this platform from the ground up, and you’ll help shape what we build next.

What you’ll build

You’ll build and improve the software behind our AI-powered products, wherever your skills are most needed. You’ll:

• Own problems end to end. Take ambiguous problems from idea to production: design, build, ship, and operate. You’ll drive technical direction in your area and contribute to product decisions.
• Build systems that scale and hold up. Design services, interfaces, and data pipelines that stay reliable at high volume and with large, complex datasets.
• Work across the stack where it matters. Own work across frontend and backend, with the heaviest lift on the backend.
• Build with AI, and build AI-powered features. Use coding agents and AI tools to move faster, and help build, evaluate, and productionize LLM- and agent-driven capabilities with a focus on accuracy and reliability.
• Partner closely with product, design, and customer-facing teams. Understand what our users actually need and turn it into the right technical solution.
• Raise the bar. Review code thoughtfully, mentor teammates, and build the shared tools and practices that help others move faster. At the Staff level, you’ll do this across teams and set technical direction for a broader area.

Qualifications

• 8+ years of professional software engineering experience shipping and operating production systems. Staff candidates should show a track record of leading complex, cross-team technical work.
• Full-stack, with depth. Strong software fundamentals and a track record across the stack, with your strongest experience on the backend (services, APIs, data, infrastructure, or systems). You’re comfortable owning the frontend too. We don’t screen on a specific language.
• Production AI experience. You’ve built with LLMs or agentic systems (RAG, tool use, multi-agent orchestration), you know how to evaluate whether they work, and you use AI coding tools every day.
• Ownership and product judgment. You drive work end to end without hand-holding, make good tradeoffs, and partner well with product, design, and customers.
• Clear communication, written and in person.

Nice-to-haves

• Experience at both startups and larger companies
• Experience mentoring engineers or leading teams
• Experience with cloud platforms

Compensation

As an early-stage startup, we offer a competitive compensation package that includes base salary, meaningful equity, and benefits . Equity grants are designed to ensure employees share in the long-term success and upside of the company. Base Salary by Level and Location Senior Software Engineer

• San Francisco: $190,000 – $240,000 annually
• Seattle: $180,000 – $230,000 annually

Staff Software Engineer

• San Francisco: $230,000 – $270,000 annually
• Seattle: $220,000 – $250,000 annually

This role is open at both the Senior and Staff levels. Final level, and therefore final compensation, is determined during the interview process based on the scope, depth, and impact demonstrated by the candidate. Within each range, placement depends on factors such as qualifications, skills, and experience. Compensation & Benefits

• Competitive Salary + Meaningful Equity
• 401(k)
• Health, Dental, Vision, and Life Insurance
• Flexible Time Off + Holidays
• High-autonomy work environment, every Tuesday is a Remote Work Day
• DoorDash subsidies for breakfast and dinner; Daily lunch options
• Boba Wednesdays
• Monthly commuter subsidies and pre-tax parking contribution
• Team gatherings and offsites

E-Verify Participation Notice

Supio participates in E-Verify, an employment authorization program through the U.S. Department of Homeland Security and the Social Security Administration.

Equal Employment Opportunity (EEO) Statement

Supio is committed to creating a diverse environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.