Sr. Software Engineer

Thriftbooks; Seattle (WA); On-site; USD 130,000 - 145,000; Full time

Benefits offered by this job

Competitive compensation package

Paid Time Off at accrual of 15 days

Six paid holidays per year

Medical & Vision Insurance

401k match

Professional development & growth

Nice, fun people to work with

Free books

Job summary

ThriftBooks is seeking a Senior Software Engineer to deliver large, meaningful change in our fulfillment centers. You’ll design tools that re-think workflows, using .NET/C#, SQL Server, and React, with exposure to image processing, LLMs, and full-text search.

You’ll own projects from concept to production, collaborate with cross‑functional teams, and continuously learn new technologies to improve reliability and performance.

Qualifications

• Strong knowledge of relational databases—multi-table querying, grouping, optimization, and schema design.
• Full stack understanding: back-end and front-end elements interact and function together.
• Curiosity and readiness to explore new APIs, tools, technologies, and techniques.

Responsibilities

• 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.

Skills

.NET/C#

SQL Server

React

Full stack understanding

APIs & integration

Tools

.NET/C#

SQL Server

React

Job description

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

$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:

• Competitive compensation package
• Earn Paid Time Off at Accrual Rate of 15-days per year
• Six Paid Holidays per calendar year
• Medical & Vision Insurance
• 401k match program
• Professional development & growth opportunities
• Work with nice, fun people
• FREE BOOKS!

Qualifications

What You’ll Need

• Strong knowledge of relational databases—multi-table querying, grouping, optimization, and schema design
• 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.