McMaster-Carr

Senior Software Engineer

Chicago, IL (Elmhurst) · Senior

Sponsorship not specified$235k-$310kDetected 17 hours ago

JavaScriptTypeScriptPythonJavaC++C#ReactCSS.NETFull-Stack DevelopmentCode ReviewGitSQLMongoDBRedisElasticsearchAzureKubernetesJenkinsLinuxKafkaOpenAPIMachine LearningComputer Vision

About the role

This role is a pathway to senior engineering management and technical leadership-your growth is determined by your impact, not by tenure.
That responsibility means engineering work starts with a deep understanding of the problem and its impact, grounded in clear ownership, open communication, and direct feedback.
Our teams are trusted to make thoughtful decisions about how work gets done, balancing a high bar for quality with practical execution.

Responsibilities

In doing so, you'll create clarity and momentum that enables you and your teammates to deliver exceptional experiences.
Order-to-Payment Flow: design and evolve end‑to‑end ordering experiences that reduce friction from checkout to mobile ordering.
As you onboard, you'll design and implement features that are small enough to help you ramp quickly, but substantial enough to matter.
As an engineering leader here, you'll have significant autonomy with end-to-end ownership where you make product decisions while building things real people interact with directly.
distinct, high‑impact areas of our platform that let engineers dive deep, build expertise, and release work that matters.
design and evolve end‑to‑end ordering experiences that reduce friction from checkout to mobile ordering.

Requirements

4+ years of professional fullstack or backend software engineering experience (see our Software Engineer II role for earlier career experience )
Experience improving system architecture, testing, and monitoring to ensure reliability and performance.
A track record of designing platforms and customer experiences that will endure over years while remaining close to the details of execution.
Experience designing and delivering large-scale, service-oriented systems.
Strong proficiency in compiled languages such as C#, Java, C++, or Rust.
Experience in delivering proof‑of‑concepts and resilient production systems, contributing from early research and architectural design to development, launch, and iterative refinement.
Ability to write high-quality, maintainable, and scalable code with Systems Design and SOLID principles.
A commitment to developing others
using code reviews, coaching, and shared best practices to help the team deliver its best work.
Ability to collaborate cross-functionally with operations, product, and UX teams to ensure business value and user impact.
Technologies We Use
Backend: NET,.NET 10, ASP.NET Core, C#, Python
Frontend: React, Typescript, JavaScript, CSS
Database: MongoDB, Elasticsearch, SQL, Db2, Redis
Testing: Selenium, Playwright, Xunit, Jest

Skills

MongoDB, Elasticsearch, SQL, Db2, Redis
Swagger, Git

Compensation

Cash Compensation

Benefits

Growth & Learning
100% tuition reimbursement
Health & Wellbeing
Medical, dental, pharmacy, and vision plans with no monthly premiums
Inclusive, all-gender benefits
Paid parental leave for all new parents
Industry-leading company-funded retirement accounts
Paid vacation and personal time
RAG, Embeddings, Vectorization, Machine Learning, Computer Vision
Total cash compensation is generally around $235,000 to $310,000 and includes a profit sharing based on company profitability.
You will also receive a relocation stipend (if applicable) and signing bonus.
The first 30 days are about learning with purpose: understanding our goals, getting a clear picture of the customer journey, and building fluency in the codebase.

Company info

McMaster‑Carr is a leading e‑commerce company that industrial customers have trusted for more than 120 years.
Our products help customers restore manufacturing lines quickly, keep operations running smoothly, and prototype the next generation of innovative products.
We earn that trust by offering the right products, making them easy to find, and delivering them fast--so customers can solve problems with speed, precision, and confidence.
We intentionally cultivate a culture focused on clear execution and long‑term growth.
We are responsible for building systems that endure for decades and support the company's long-term growth.
How You'll Make An Impact
strengthen the internal platforms that power sourcing, inventory planning, receiving, and supplier relationships, helping the company make disciplined investments and scale responsibly.
lead development of software that integrates with warehouse operations, fulfillment, delivery, and customer service to reduce manual work and get orders to customers faster.
After you've delivered your first features, you'll start taking on less‑defined challenges where you'll sharpen requirements and produce thoughtful, durable solutions that meaningfully improve the customers experience.
Our engineering teams operate within domains: distinct, high‑impact areas of our platform that let engineers dive deep, build expertise, and release work that matters.

Equal opportunity

Employer
We are proud to be an Equal Opportunity Employer and dedicated to providing employees a workplace with reasonable accommodations and free of discrimination, harassment, and retaliation. At McMaster-Carr, we do not make employment decisions based on age, ethnicity, citizenship status, military status, gender identity and expression, race, religion, disability status, marital status, sexual orientation, or any other legally protected group.
This position is not eligible for work authorization sponsorship by McMaster-Carr.
Data We Collect

Visa & Work Authorization

This position is not eligible for work authorization sponsorship by McMaster-Carr.

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This listing is sourced directly from McMaster-Carr's careers page and normalized into a canonical job model.