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Sr Fullstack Developer Jobs in Addison, IL (NOW HIRING)

McMaster-Carr

Senior Software Engineer

Chicago, IL · On-site

$235K - $310K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

This role is a pathway to senior engineering management and technical leadership-your growth is ... What You Bring * 4+ years of professional fullstack or backend software engineering experience (see ...

McMaster-Carr

Senior Software Engineer

Chicago, IL · On-site

$235K - $310K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

This role is a pathway to senior engineering management and technical leadership-your growth is ... What You Bring * 4+ years of professional fullstack or backend software engineering experience (see ...

Jump Trading

Software Engineer | GUI

Chicago, IL

As a senior engineer, you will help shape technical direction, mentor teammates, and establish best ... fullstack fundamentals and the ability to work across frontend and backend boundaries Strong focus ...

Ethereum Technologies LLC

LEAD .NET FULLSTACK

Chicago, IL · On-site

$120 - $170/hr

You will mentor junior developers, guide technical decisions, and ensure the successful delivery of projects while navigating cross-team collaborations and codebase integrations. Responsibilities

McMaster-Carr

Lead Software Engineer

Chicago, IL · On-site

$235K - $310K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

This role is a pathway to senior engineering management and technical leadership-your growth is ... What You Bring * 4+ years of professional fullstack or backend software engineering experience (see ...

McMaster-Carr

Lead Software Engineer

Chicago, IL · On-site

$235K - $310K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

This role is a pathway to senior engineering management and technical leadership-your growth is ... What You Bring * 4+ years of professional fullstack or backend software engineering experience (see ...

Capgemini

Java Fullstack with React (7 Years and Above)

Chicago, IL · On-site

$54 - $69.75/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Location - Chicago IL We are seeking a highly skilled Senior Java Full Stack React JS Developer with 7+ years of experience to join our growing technology team. The ideal candidate will be ...

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All JobsSr Fullstack Developer JobsSr Fullstack Developer Jobs in Addison, IL

Sr Fullstack Developer information

See Addison, IL salary details

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How much do sr fullstack developer jobs pay per hour?

As of Aug 17, 2026, the average hourly pay for sr fullstack developer in Addison, IL is $59.37, according to ZipRecruiter salary data. Most workers in this role earn between $49.38 and $68.41 per hour, depending on experience, location, and employer.

What is a Sr Fullstack Developer?

A Sr Fullstack Developer is an experienced software engineer who is proficient in both frontend and backend development. They work with a variety of programming languages, frameworks, and databases to build fully functional web applications. In addition to coding, senior fullstack developers often lead projects, mentor junior developers, and help make architectural decisions. Their broad skill set allows them to handle tasks across the entire technology stack, ensuring that applications are efficient, scalable, and user-friendly.

What are some typical challenges a Sr Fullstack Developer faces when balancing front-end and back-end responsibilities?

Sr Fullstack Developers often need to juggle tasks across both the front-end and back-end, which can be challenging when priorities shift quickly or deadlines are tight. Balancing deep technical knowledge in multiple frameworks and languages while ensuring seamless integration requires strong organizational skills and effective communication with both UI/UX designers and backend engineers. Additionally, staying updated with evolving technologies on both ends is crucial, so time management and continuous learning are key to success in this role.

What are the key skills and qualifications needed to thrive as a Sr Fullstack Developer, and why are they important?

To thrive as a Sr Fullstack Developer, you need advanced proficiency in both front-end and back-end programming languages, frameworks, and a solid understanding of software architecture, typically supported by a computer science degree or equivalent experience. Familiarity with tools such as Git, Docker, CI/CD pipelines, cloud platforms, and relevant certifications like AWS Certified Developer or similar are often expected. Strong problem-solving abilities, effective communication, and a collaborative mindset are vital soft skills for this role. These competencies enable developers to deliver robust, scalable solutions and effectively drive projects to completion in dynamic team environments.

What is the difference between Sr Fullstack Developer vs Backend Developer?

AspectSr Fullstack DeveloperBackend Developer
Required SkillsProficiency in both frontend (JavaScript, HTML, CSS) and backend (Node.js, Python, Java)Specialized in server-side languages and database management
Work EnvironmentWorks on both client-facing and server-side componentsFocuses primarily on backend systems and APIs
Common UsageUsed across full product development teamsPrimarily in backend-focused roles within development teams

The main difference between a Sr Fullstack Developer and a Backend Developer is the scope of expertise. A Sr Fullstack Developer handles both frontend and backend tasks, while a Backend Developer specializes in server-side development. Both roles require strong programming skills, but the Fullstack role demands broader knowledge across the entire application stack.

What job categories do people searching Sr Fullstack Developer jobs in Addison, IL look for?

The top searched job categories for Sr Fullstack Developer jobs in Addison, IL are:

What cities near Addison, IL are hiring for Sr Fullstack Developer jobs?

Cities near Addison, IL with the most Sr Fullstack Developer job openings:

Sr Fullstack Developer jobs near you

Senior Software Engineer

McMaster-Carr

Chicago, IL • On-site

$235K - $310K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 10 days ago

McMaster-Carr rating

9.2

Company rating: 9.2 out of 10

Based on 14 frontline employees who took The Breakroom Quiz

19th of 419 rated retail wholesalers

Job description

About the job
Who We Are
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. This role is a pathway to senior engineering management and technical leadership-your growth is determined by your impact, not by tenure.
Our Culture
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. 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. 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.
How You'll Make An Impact
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. Right now, we're actively growing in the following areas:
  • McMaster.ai: Build and scale our domain-expert AI assistant that turns McMaster's product data and customer history into a continuously learning assistant-interpreting intent, narrowing options, explaining tradeoffs, and carrying context across sessions to make complex industrial work feel effortless.
  • Customer Navigation: build and evolve the systems that help our customers find, evaluate, and understand millions of industrial products across our digital publications, including improving search relevance with LLMs and simplifying navigation across our product offering.
  • Order-to-Payment Flow: design and evolve end-to-end ordering experiences that reduce friction from checkout to mobile ordering.
  • Product Merchandising: strengthen the internal platforms that power sourcing, inventory planning, receiving, and supplier relationships, helping the company make disciplined investments and scale responsibly.
  • Fulfillment & Automation: lead development of software that integrates with warehouse operations, fulfillment, delivery, and customer service to reduce manual work and get orders to customers faster.

What You'll Do
  • 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. As you onboard, you'll design and implement features that are small enough to help you ramp quickly, but substantial enough to matter.
  • 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. In doing so, you'll create clarity and momentum that enables you and your teammates to deliver exceptional experiences.

What You Bring
  • 4+ years of professional fullstack or backend software engineering experience (see our Software Engineer II role for earlier career experience)
  • 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.
  • Experience improving system architecture, testing, and monitoring to ensure reliability and performance.
  • 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.
  • A track record of designing platforms and customer experiences that will endure over years while remaining close to the details of execution.

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
  • Infrastructure: Kubernetes, Jenkins, Gitlab, Azure, Linux, VMWare, IIS
  • LLMs: OpenAI, Copilot, Claude, Gemini, Grok, perplexity, deepseek
  • Applied AI: RAG, Embeddings, Vectorization, Machine Learning, Computer Vision
  • Dev Tools: Swagger, Git
  • Messaging /Data Streaming: Kafka, MQ

Cash Compensation
  • 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.

Benefits
Growth & Learning
  • 100% tuition reimbursement
  • Informal and formal mentorship
  • Employee resource groups

Health & Wellbeing
  • Medical, dental, pharmacy, and vision plans with no monthly premiums
  • Inclusive, all-gender benefits

Family & Future
  • Paid parental leave for all new parents
  • Adoption and surrogacy assistance
  • First-time home buyer assistance
  • Industry-leading company-funded retirement accounts

Time Off
  • Paid vacation and personal time

Who You Are
We're looking for curious, driven engineers who thrive in collaborative environments and love solving hard problems. Ideal candidates will have:
  • Experience designing and delivering large-scale, service-oriented systems.
  • Strong proficiency in compiled languages such as C#, Java, C++, or Rust.
  • A thoughtful, analytical approach to problem-solving and software design.
  • Clear, confident communication skills across technical and non-technical audiences.
  • Interest in mentoring, coaching, and growing as a leader.

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
We may collect professional, education and employment-related data, and any assessments made throughout the recruiting process, to evaluate candidacy for employment. To communicate with job applicants, we may collect applicant names, contact information, and other personal identifiers, including those outlined in the California customer records statute. Through voluntary disclosure, we may also collect protected classifications under federal or California law (e.g., race, gender, etc.). For additional details about the personal information we collect and its uses, please click here.

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