ThriftBooks is the world's largest used book retailer! We believe in a workplace where respect for our employees matters, where promoting from within is how we grow, and where safety comes first in all our decisions and planning. At ThriftBooks, your work will help get inexpensive books into the hands of people who need them instead of going into landfill. We strive to create a friendly work environment with high standards of performance and rewards for excellence. We started out small and remember that encouraging people to do their best is how we expanded to our current scale.
If you want to learn about the intersection of technology, innovation, and good old-fashioned teamwork, we might be a good fit for you. Wherever you start in the company, our hope is that is a launching point to higher achievement. At ThriftBooks, your success is up to you.
Position Overview
We are seeking a Senior Software Engineer with deep technical expertise, a natural curiosity, and a drive to see their work to deliver large meaningful change to our employees and customers. You will focus on developing new tools that re-think how we approach work in our fulfillment centers. Your work will intersect with new technologies in image processing, computer vision, LLMs, and full-text search. You are a software engineer first but are interested in learning and exploring in other areas as needed.
The ideal candidate will be well-versed in .NET/C#, SQL Server, and front-end frameworks like React. Beyond this core stack, you should also enjoy exploring new technologies, troubleshooting across platforms, and integrating diverse third-party solutions and APIs.
We’re looking for someone who combines technical depth with an eagerness to learn and innovate.
What You’ll Do
- Design and develop software tools that drive efficiency, automation, and scalability within our fulfillment centers
- Create solutions using .NET/C# and SQL Server that enhance operational performance across the environment
- Collaborate with fulfillment center stakeholders to gather requirements, identify pain points, and deliver impactful, user-centered tools
- Take ownership of projects from concept to production—integrating, troubleshooting, and delivering solutions end-to-end to ensure smooth, reliable deployment and performance
Base Salary:
$130,000 - $145,000/yr. This range reflects the good-faith hiring base salary range for this position. however, individual salaries are determined by a variety of factors including, but not limited to: business considerations, local market conditions, internal equity, as well as candidate qualifications such as skills, experience, and education/training.
ThriftBooks is unable to provide employment visa sponsorship at this time. Applicants must be legally authorized to work in the United States. All candidates must be willing to authorize a pre-employment background check. All applicants agree to ThriftBooks' Privacy Notice for Employment-Related Personal Data: https://www.thriftbooks.com/s/employment-privacy-notice/
ThriftBooks is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment where all applicants are considered without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status or any other characteristic protected by applicable law.
Why You’ll Love It Here:
- Annual 10% bonus incentive
- Competitive compensation package
- Earn Paid Time Off at Accrual Rate of 15-days per year
- Six Paid Holidays per calendar year
- Medical & Vision Insurance
- Dental Insurance
- Company paid STD/LTD
- Company paid Life Insurance
- 401k match program
- Professional development & growth opportunities
- Work with nice, fun people
- FREE BOOKS!
What You’ll Need
- 4+ years of hands-on experience in software engineering with a preferred focus on .NET/C#, and JavaScript
- Strong knowledge of relational databases—multi-table querying, grouping, optimization, and schema design
- Experience with front-end frameworks or libraries, such as Blazor, React, or JavaScript
- Familiarity with the “full stack” of development, understanding how back-end and front-end elements interact and function together
- Curiosity and readiness to explore new APIs, tools, technologies, and techniques.
Skills Required
- 4+ years of hands-on software engineering experience
- .NET / C# experience
- SQL Server expertise (multi-table querying, grouping, optimization, schema design)
- Experience with front-end frameworks or libraries (React, Blazor, JavaScript)
- Full-stack familiarity, understanding back-end and front-end interactions
- Curiosity and readiness to explore new APIs, tools, technologies (image processing, computer vision, LLMs, full-text search)
- Experience designing and delivering production software end-to-end, including integration and troubleshooting
- Legally authorized to work in the United States (employer does not sponsor visas)
- Willingness to authorize a pre-employment background check
- Experience building tools for operational/fulfillment center efficiency
What We Do
Based in Seattle, WA, ThriftBooks is the largest online seller of used books in the world, having sold more than 100 million books since its inception. Founded in 2003 and backed by KCB Management, ThriftBooks operates 8 fulfillment centers in the US that purchase, grade, and distribute used and collectible books.
