Mid/Senior .Net Developer — Microservices & Rest

Human Power Bg; Chicago (IL); On-site; USD 98,000 - 158,000; Full time

Benefits offered by this job

Medical, dental, and vision benefits

Paid time off (Vacation/Holidays)

401(k) savings plans

Health Savings Account (HSA)

Job summary

Caterpillar is seeking a Software Engineer to join Cat Digital Platform in Chicago, IL, to build scalable, secure cloud solutions for data, insights, and services across systems worldwide.

You will develop backend APIs, ensure secure integrations using OAuth 2.0, and contribute to testing, documentation, and CI/CD pipelines. This role requires collaboration with cross-functional teams in an Agile environment.

Qualifications

• Proven experience building backend APIs and microservices.
• Strong knowledge of Java, Spring Boot, and cloud services.
• Understanding of API security concepts such as OAuth 2.0 and JWT.

Responsibilities

• Develop, test, and maintain backend RESTful APIs using Java, Spring Boot, and AWS cloud services.
• Develop and maintain API contracts, payload schemas, and OpenAPI/Swagger specifications.
• Implement integrations with OAuth 2.0 and secure communications.
• Create automated unit and integration tests and participate in performance/quality testing.
• Contribute to CI/CD pipeline automation and deployment processes.
• Provide technical documentation and runbooks.

Skills

RESTful API design

Cloud platforms

Agile collaboration

Tools

Java 21+

Spring Boot

OAuth 2.0

OpenAPI/Swagger

AWS

Azure

GCP

CI/CD (Azure DevOps/Jenkins/GitHub Actions)

Job description

Location and Contract

Chicago, Illinois
Full time
R

Career Area

Technology, Digital and Data

Job Description

When you join Caterpillar, you're joining a global team who cares not just about the work we do - but also about each other. We are the makers, problem solvers, and future world builders who are creating stronger, more sustainable communities. We don't just talk about progress and innovation here - we make it happen, with our customers, where we work and live. Together, we are building a better world, so we can all enjoy living in it.

Join Cat Digital Platform and help build the technology that powers Caterpillar's digital future. Our platform fuels the secure flow of data, insights, and services connecting customers, dealers, machines, and applications worldwide. As a Software Engineer, you will develop, test, and deliver scalable, secure, and customer-focused cloud solutions while contributing to the team's technical excellence and delivery success.

Job Duties

• Develop, test, and maintain backend RESTful APIs using Java, Spring Boot, and AWS cloud services.
• Develop and maintain API contracts, payload schemas, and OpenAPI/Swagger specifications.
• Implement integrations using established authentication and authorization standards, including OAuth 2.0.
• Develop automated unit and integration tests and participate in performance, load, and quality testing activities.
• Participate in peer code reviews and contribute to engineering best practices and continuous improvement initiatives.
• Troubleshoot and resolve application, integration, and production support issues.
• Contribute to CI/CD pipeline automation, deployment processes, and operational support activities.
• Create and maintain technical documentation, deployment guides, and operational runbooks.

What You Will Have

• Software Development: Knowledge of software development tools and activities; ability to produce software products or systems in line with product requirements.
• Software Product Design/Architecture: Knowledge of software product design; ability to convert market requirements into the software product design.
• Decision Making and Critical Thinking: Knowledge of the decision-making process and associated tools and techniques; ability to accurately analyze situations and reach productive decisions based on informed judgment.
• Effective Communications: Understanding of effective communication concepts, tools and techniques; ability to effectively transmit, receive, and accurately interpret ideas, information, and needs through the application of appropriate communication behaviors.

Top Candidates Will Also Have

• Experience developing RESTful APIs and microservices using Java 21+, Spring Boot, API gateway technologies such as Apigee, and cloud platforms such as AWS, Azure, or GCP.
• Understanding of API security concepts, including OAuth 2.0, JWT, and service-to-service communication patterns.
• Strong understanding of data structures and object-oriented design principles.
• Experience with event-driven architectures and messaging technologies such as Kafka, AWS SQS, AWS SNS, AWS Kinesis, or RabbitMQ.
• Experience with relational and NoSQL databases such as Aurora, DynamoDB, PostgreSQL, MySQL, Oracle, MongoDB, Redis, or Elasticsearch.
• Experience developing automated unit and integration tests and deploying applications using CI/CD tools such as Azure DevOps, Jenkins, GitHub Actions, or similar platforms.
• Experience working in Agile/Scrum teams and collaborating effectively across engineering, product, and business stakeholders.

Additional Details

• This position requires the candidate to be based in Chicago, IL
• Relocation assistance is not available for this position
• Visa sponsorship is not available for this position

Summary Pay Range

$97,530.00 - $158,480.00

Compensation and benefits offered may vary depending on multiple individualized factors, job level, market location, job-related knowledge, skills, individual performance and experience. Please note that salary is only one component of total compensation at Caterpillar.

Benefits

• Medical, dental, and vision benefits*
• Paid time off plan (Vacation, Holidays, Volunteer, etc.)*
• 401(k) savings plans*
• Health Savings Account (HSA)*
• Flexible Spending Accounts (FSAs)*
• Health Lifestyle Programs*
• Employee Assistance Program*
• Voluntary Benefits and Employee Discounts*
• Career Development*
• Incentive bonus*
• Disability benefits
• Life Insurance
• Parental leave
• Adoption benefits
• Tuition Reimbursement

* These benefits also apply to part-time employees

Visa Sponsorship is not available for this position.

Posting Dates

September 2, 2026 - September 13, 2026

Any offer of employment is conditioned upon the successful completion of a drug screen.

Caterpillar is an Equal Opportunity Employer, Including Veterans and Individuals with Disabilities. Qualified applicants of any age are encouraged to apply.

Company Culture

We are a global company that takes pride in its culture. There's more to work at Caterpillar than just the work itself. We hire smart, friendly people and it shows in our culture. We hold ourselves to high standards and make sure our values of integrity, excellence, teamwork, commitment and sustainability come to life in the way we work. We make sure our employees feel continuously challenged while also supported. We provide professional growth opportunities, including leadership programs. We celebrate the diversity of our team, while also working together as one Caterpillar.

Our culture, like everything at our company, is made possible by each employee's contribution. Person by person, we create the environment we work in, and we are proud of the Caterpillar we've built.