Senior Software Engineer, Backend / Full Stack (AI Startup)

Senior Software Engineer, Backend / Full Stack (AI Startup)

Seattle, WA (Hybrid - Minimum 2 Days In Office Weekly)

Compensation: $150,000 - $200,000 Base Salary

Equity: Meaningful Early-Stage Equity Grant

Employment Type: Full-Time

Prime Team Partners is partnering with a well-funded Seattle startup to hire a Senior Software Engineer who wants to build cutting-edge AI products from the ground up.

This is a rare opportunity to join a seed-stage company that recently completed a significant funding round and is rapidly scaling both its product and engineering team. The company is using the latest advances in AI and large language models to solve meaningful real-world problems while building technology that has the potential to positively impact millions of users.

With a small, highly collaborative team, every engineer has a direct voice in product decisions, technical direction, and company growth. If you're excited by fast-moving startup environments, AI-native development, and having a measurable impact on both the product and business, we'd love to talk.

What You'll Do

 Design, build, and maintain scalable backend services using Python

 Architect APIs, data models, and platform infrastructure

 Integrate and optimize LLMs and AI-powered workflows in production

 Build systems that are reliable, secure, observable, and highly performant

 Partner closely with product and leadership to shape product direction

 Contribute across the stack when needed, including React and TypeScript applications

 Evaluate new AI technologies and rapidly bring innovations into production

 Help define engineering best practices in a growing startup environment

What We're Looking For

 5+ years of professional software engineering experience

 Strong backend development experience with Python

 Experience building cloud-native applications (AWS preferred)

 Experience designing APIs and scalable distributed systems

 Passion for AI and modern AI-assisted development workflows

 Strong product mindset and willingness to contribute beyond coding

 Ability to thrive in ambiguity and move quickly with limited direction

 Prior startup experience strongly preferred

Nice to Have

 Experience working with LLMs, AI agents, LangChain, RAG, or related AI technologies

 React and TypeScript experience

 Terraform or infrastructure-as-code experience

 Experience building data-intensive applications

 Experience with consumer products, gamification, or highly engaging user experiences

Why Join?

 Recently funded seed-stage startup with strong backing and ambitious growth plans

 Opportunity to work directly with founders and influence product strategy

 AI-first environment where innovation is encouraged and expected

 Small team, minimal bureaucracy, and significant ownership

 Meaningful equity participation with substantial upside potential

 Opportunity to solve complex technical challenges while building technology that makes a positive impact

Compensation & Benefits

 Base Salary: $150,000 - $200,000

 Meaningful early-stage equity grant

 Medical, dental, and vision coverage

 Paid time off and company holidays

 Flexible work arrangements

 Visa sponsorship available for qualified candidates

Location Requirement: This role is based in Seattle and requires a minimum of two days per week onsite. Candidates already located in the greater Seattle area are strongly preferred.