Top 46 Java/.net developers Jobs in Westchester, Il

Senior Software Engineer
RB Global —Westchester, IL
- $99,140 a year
- Full-time
- 8 years
- SQL
- Mentoring
- Health insurance
- Dental insurance
Quick Apply
Senior Software Engineer
Synapse Health —Skokie, IL
- From $160,000 a year
- Remote
- Azure
- Computer Science
- 5 years
- Disability insurance
- Health insurance
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Staff Software Engineer
RB Global —Westchester, IL
- $123,950 a year
- Full-time
- Management
- 3 years
- Java
- Health insurance
- Dental insurance
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Associate Manager, Back-End Development
Avanade —Chicago, IL
- $117,600 - $171,000 a year
- Computer Science
- Mid-level
- JavaScript
- Paid training
- Paid holidays
3d
Senior Full Stack Developer (.NET/C#/Angular)
BDO —Oak Brook, IL
- $75,000 - $150,000 a year
- Full-time
- Computer science
- Azure
- Computer Science
- Employee stock ownership plan
- Opportunities for advancement
IT Developer
USG Corporation —Chicago, IL
- $91,380 - $121,800 a year
- Hybrid work
- Computer science
- Microsoft Access
- Azure
- Paid holidays
- Health insurance
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Software Development Technical Architect
BDO —Oak Brook, IL
- $135,000 - $165,000 a year
- Full-time
- Computer science
- Azure
- Computer Science
- Employee stock ownership plan
- Opportunities for advancement
Technical Support Specialist
Baker Tilly Advisory Group, LP —Chicago, IL
- $52,000 - $124,400 a year
- Full-time
- Computer science
- Azure
- Computer Science
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2d
IT Systems Integration Developer
Camping World —Chicago, IL
- $91,800 - $140,700 a year
- Weekends as needed
- Hybrid work
- Computer science
- Computer Science
- 5 years
- Paid parental leave
- Health insurance
Quick Apply
Mobile/Web Developer (.Net)
Air Line Pilots Association, Int'l. —Chicago, IL
- $97,948 - $139,923 a year
- Hybrid work
- Microsoft Outlook
- Computer Science
- Research
- Commuter assistance
- Health savings account
Senior Software Developer I
Lessen —Chicago, IL
- Full-time
- Hybrid work
- Computer science
- Computer Science
- 5 years
- Paid holidays
- Dental insurance
Quick Apply
Software Engineer, Test & Infrastructure II
Vail Systems Inc. —Chicago, IL
- $89,400 - $116,400 a year
- Full-time
- Hybrid work
- Computer science
- Computer Science
- Mid-level
- Paid parental leave
- Disability insurance
Quick Apply
Azure DevOps Lead
High5 —Chicago, IL
- $50 - $60 an hour
- Temporary
- System design
- 11+ years
- Analysis skills
Software Solution Architect
BDO —Oak Brook, IL
- $150,000 - $180,000 a year
- Full-time
- Azure
- Computer Science
- Java
- Employee stock ownership plan
- Opportunities for advancement
Manager, Full-Stack Development
Avanade —Chicago, IL
- $139,200 - $195,700 a year
- Computer Science
- SQL
- Mentoring
- Paid training
- Paid holidays
2d
Software Engineer, Test & Infrastructure II (Bilingual Spanish)
Vail Systems Inc. —Chicago, IL
- $89,400 - $116,400 a year
- Full-time
- Hybrid work
- Spanish
- Computer science
- Computer Science
- Paid parental leave
- Disability insurance
Quick Apply
UiPath Developer Contractor (Remote)
Synchronous Solutions, Inc —Chicago, IL
- Full-time
- Remote
- Computer Science
- English
- Mid-level
Quick Apply
Senior Visual Studio.Net Web Developer
Celestial Technology Solutions —Romeoville, IL
- $50 an hour
- Email
- 5 years
- Bachelor's degree
- JavaScript
Application Developer
FACTIVITY —Chicago, IL
- Software troubleshooting
- Mid-level
- Java
Cloud Technical Developer
AK INFORMATION TECHNOLOGIES —Rolling Meadows, IL
- Computer science
- Computer Science
- Mid-level

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java/.net developers jobs near westchester, il

Senior Software Engineer

RB Global -
Westchester, IL

Quick Apply

Job Details

Full-time
$99,140 a year

Benefits

Health insurance
Dental insurance
Paid time off
Vision insurance
401(k) matching

Qualifications

Index optimization
Containerization systems
Azure SQL Database
Secure web application development
Systems integration
Software engineering
Front-end component design
Azure Networking Services
Tooling
.NET Core
C#
Front-end state management
Data retrieval time improvement
AI tools proficiency
Public Cloud
Scalable systems
Microservices
SQL
Event-driven architecture
Azure PaaS
DNS
Scalability
Developing and maintaining backend systems
Web applications
Agile software development
Front-end component implementation
Back-end integration
Distributed computing
DevOps automation
Query management

Full Job Description

About the Role

As a Senior Software Engineer, you will play a pivotal role in shaping the architecture, quality, and technical direction of our proprietary e-commerce software platform.

You will work within a collaborative, cross-functional engineering team, taking ownership of features and services across our microservices architecture, from design through deployment and operation. You will collaborate closely with engineering managers, staff engineers, and cross-functional partners to design, build, and scale high-impact systems We're looking for engineers who are curious, pragmatic, and comfortable navigating a large, evolving codebase — and who embrace modern AI-assisted development practices to move faster and smarter.

Responsibilities

Design, and deliver highly scalable, fault-tolerant services and features across our microservices platform.
Take end-to-end technical ownership — from requirements through deployment, monitoring, and production support.
Lead technical design discussions and contribute meaningfully to architecture decisions, technology choices, and engineering standards.
Proactively identify and address technical debt — refactor and improve maintainability, performance, and reliability of the codebase.
Troubleshoot and resolve complex production issues with urgency and structured problem-solving.
Collaborate with Product, QA, and stakeholders to clarify requirements, surface risks early, and drive solutions to completion with minimal supervision.
Champion engineering best practices — testing, CI/CD, security, observability, and documentation.
Leverage AI developer tools (e.g., GitHub Copilot, Claude, Cursor) effectively to accelerate development and improve engineering output.
Perform other duties as assigned.

Required Qualifications

8+ years of professional software engineering experience in a multi-team, production environment.
.NET Framework/ .NET Core / C# – expert-level experience designing and building APIs, microservices, and back-end systems; strong grasp of design patterns and SOLID principles.
React – Experience building scalable, maintainable front-end applications; strong understanding of state management, performance optimization, and component architecture.
Good grasp of JVM-based language fundamentals (Java or Kotlin); able to read, reason about, and contribute to codebases beyond the primary stack when the need arises.
Microsoft Azure – solid working knowledge of Azure services with hands-on experience across one or more of the following: Azure Container Apps (ACA), App Services (Web Apps), Azure Service Bus, Managed PostgreSQL, Key Vault, Application Gateway, Virtual Networks (VNet) & Subnets, Private Endpoints, and Private DNS Zones; experience deploying and operating production workloads in Azure.
Databases – SQL Server & PostgreSQL – expert-level experience with relational database design, complex query optimization, indexing strategies, and performance tuning.
RESTful API design – proven ability to design, build, version, and secure APIs at scale.
Strong understanding of microservices architecture, distributed systems, and integration patterns.
Containers – Docker – strong hands-on experience; comfortable with containerized application design, networking, and deployment.
Experience with CI/CD pipelines (Azure DevOps, GitHub Actions, or equivalent).
Solid understanding of Agile / Scrum practices and the full software development lifecycle.
Demonstrated and effective use of AI-assisted development tools as part of everyday engineering workflow.

Nice-to-Have Skills

Experience with Kubernetes or Azure Container Apps for container orchestration.
Familiarity with event-driven architecture and message brokers (e.g., Azure Service Bus, RabbitMQ, Kafka).
Experience with observability tooling — logging, metrics, and distributed tracing (e.g., Application Insights, OpenTelemetry).
Background in e-commerce, marketplace, or transaction-heavy platform environments.
Experience with Test-Driven Development (TDD) and pair programming practices.
Ability to learn and adapt to newer patterns and technologies as the landscape evolves.

What We're Looking For in You

You operate with a high degree of ownership and autonomy — you don't wait to be told what to do next.
You are a multiplier — you make the engineers around you better through mentorship, clear communication, and strong technical example.
You balance pragmatism and quality — you know when to move fast and when to slow down and do it right.
You're comfortable with ambiguity and complexity — you can break down hard problems and drive them to resolution.
You stay current and curious — you actively follow the evolving engineering landscape, including AI tooling, and apply what's relevant.

We are an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

IAA Holdings, LLC (IAA)

IAA Holdings, LLC (IAA), a Ritchie Bros. Auctioneers company (NYSE: RBA) and (TSX: RBA), is a trusted global marketplace for insights, services, and transaction solutions for commercial assets and vehicles. Leveraging leading-edge technology and focusing on innovation, IAA’s unique platform facilitates the marketing and sale of total-loss, damaged and low-value vehicles. IAA serves a global buyer base – located throughout over 170 countries – and a full spectrum of sellers, including insurers, dealerships, fleet lease and rental car companies, and charitable organizations. Buyers have access to multiple digital bidding and buying channels, innovative vehicle merchandising, and efficient evaluation services, enhancing the overall purchasing experience. IAA offers sellers a comprehensive suite of services aimed at maximizing vehicle value, reducing administrative costs, shortening selling cycle time and delivering the highest economic returns.

RB Global full-time employees are offered medical, dental, vision, and basic life insurances. Employees are able to enroll in our company’s 401k plan and RB Global will match 100% for the first 4% contributed. Employees will also receive 15 days of PTO each year.

Quick Apply

Refine Your Search

java/.net developers jobs in westchester, il

Senior Software Engineer

Senior Software Engineer

Staff Software Engineer

Associate Manager, Back-End Development

Senior Full Stack Developer (.NET/C#/Angular)

IT Developer

Software Development Technical Architect

Technical Support Specialist

IT Systems Integration Developer

Mobile/Web Developer (.Net)

Senior Software Developer I

Software Engineer, Test & Infrastructure II

Azure DevOps Lead

Software Solution Architect

Manager, Full-Stack Development

Software Engineer, Test & Infrastructure II (Bilingual Spanish)

UiPath Developer Contractor (Remote)

Senior Visual Studio.Net Web Developer

Application Developer

Cloud Technical Developer

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