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Principal Software Engineer

Pioneer Square LabsSeattle, Washington, United StatesOnsite

Principal Full-Stack Software Engineer (Core Team) 


PSL is a startup studio and early-stage venture capital fund building the next generation of software companies in the Pacific Northwest. We partner with exceptional entrepreneurs to develop ideas and validate or kill them (ruthlessly). For the best ideas, we invest significant development work and capital to turn these ideas into venture-funded companies with rapid customer and market adoption. See a few examples  here.Over 7 years and 35 spinouts, we have developed a successful, systematic approach for validating, launching and scaling great ideas.

Our team of engineers, designers, marketers and operators is obsessed with supporting and accelerating the work of uncommonly talented founders.We are looking for a well-rounded full-stack software engineer with significant Generative AI experience. Just like founding a startup, partnering with early stage founders requires multidisciplinary skills. In this role, you will work alongside the Pioneer Square Labs team and portfolio company leaders, to do whatever is necessary to validate and launch startup ideas.You are curious, optimistic yet discerning, and highly autonomous. You absolutely love startups. 

As an engineer on the core team a typical day might include the following . . . 


  • Join a project team for an hour to give them feedback on technical feasibility
  • Develop and ship full-stack Node.js POC project
  • Prototype an API workflow using GPT
  • Advise a startup team company on 3rd Party SAAS Choices 
  • Review and interview candidates 
  • Build a LangChain proof of concept for a business idea
  • Prove a concept with a Machine Learning model in a python notebook
  • Add Zapier integrations for a 3rd party system
  • Configure Google Workspace accounts, and open an AWS account for a new startup
  • Setup a camera for a conference room

Signs this might be a fit


  • Your current job doesn’t allow you autonomy to move fast
  • You’re strong technically but you want to get better at building successful businesses
  • You’re customer focussed and like to have a say in product direction and design
  • You’re interested in trying new roles and technologies to broaden your career
  • You like to write code, but more importantly, you love just making things

The salary range for this position is $180,000-$220,000 Please note that the base salary range is a guideline, and individual total compensation will vary based on factors such as the candidate's relevant experience, qualifications, education, skill level, competencies and work location. In addition, this position is eligible for an equity grant.PSL provides the following benefit for regular, full time employees: 

  • Medical, dental, vision, EAP and life insurance.  Employee premiums are covered at 100% and dependent premiums are covered at 75%
  • Long and Short term disability coverage fully paid for by PSL
  • Self Managed paid time off
  • Commuter benefit of either a fully subsidized ORCA pass or a parking spot (value up to $300/month)
  • Once weekly lunch delivery
  • Two volunteer days off to dedicate to a cause important to you
  • Professional development allowance up to $1500 annually

We are an equal opportunity employer and highly value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Life at Pioneer Square Labs

Pioneer Square Labs is a Seattle-based studio that creates and launches technology startups. We are funded by 14 VCs and 50 angel investors from Seattle, Silicon Valley, Colorado and other parts of the country. Companies created: - LumaTax (http://lumatax.com) allows small business owners to file their sales tax with ease. - Ad Lightning (http://adlightning.com) has a complete set of Ad Quality tools to save time, improve page performance and eliminate costly user experience problems for Publishers and Ad Platforms. - JetClosing (http://jetclosing.com) uses technology to create a better, more human, real estate title and settlement experience. - Boundless (http://boundless.com) is a new technology company providing immigrants with the tools, information, and personalized support to navigate their immigration journey with confidence.
Thrive Here & What We Value- Collaborative Workplace- Innovative Solutions and Rapid Experimentation- Direct Impact on Knowledge Workers Globally- Vast Autonomy to Shape Growth Strategies- Valuing Insights and Contributions as Part of a Collective Effort- Supporting Uncommonly Talented Founders- Successful Approach for Validating, Launching, and Scaling Ideas- Equal Opportunity Employer with High Value on Diversity- Pioneer Square Labs' Commitment to Employee Benefits and Work-Life Balance- Fastpaced Company Culture with a Focus on Innovation and Growth
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