Senior Software Engineer Jobs in Romeoville, IL (NOW HIRING)

Diversified Services Network, Inc. (DSN) is seeking a full-time Senior Software Engineer to join our team in Chicago, IL! We offer full benefits, PTO, 401k, and more! This is a hybrid role requiring 1-2 days per week on-site. If you are a senior backend engineer with deep AWS and Java expertise ready to shape cloud-native architecture within an extremely reputable, stable Fortune 500 company - let's talk!

We are seeking a Senior Software Engineer to serve as a key technical contributor to the design and implementation of Java-based, cloud-native systems on AWS, in a hybrid role based in Chicago, IL. You will shape service architecture, data flows, and integration patterns that meet strict scalability, availability, and security requirements, contributing architectural insight across microservices, event-driven, and asynchronous processing patterns with clear service ownership and well-defined contracts.

You will develop and maintain core backend services using modern Java frameworks and AWS-native patterns - including message-driven processing, distributed data management, and RESTful and event-based APIs. You will champion adoption of AWS services such as managed compute, messaging, storage, and databases, mentor junior engineers on infrastructure as code and resiliency standards, and model best practices for CI/CD automation, observability, logging, metrics, and tracing. By proactively identifying architectural bottlenecks, scalability constraints, and technical debt, you will make significant contributions to system performance, reliability, and long-term maintainability.

• Design and implement backend services, cloud-native components, and core platform functionality (approximately 45-55% of role).
• Investigate and resolve defects, performance issues, and production incidents; implement fixes and improvements to ensure system stability and reliability (approximately 15-20% of role).
• Conduct thorough, timely pull request reviews and technical design discussions, using review comments as teaching moments to elevate junior engineers' judgment (approximately 15-20% of role).
• Participate in architecture reviews, integration discussions, and cross-team coordination on shared APIs and cloud architecture (approximately 5-10% of role).
• Actively participate in sprint planning, backlog refinement, standups, retrospectives, and other necessary technical or operational ceremonies (approximately 5-10% of role).
• Partner with Product Owners and engineering managers to translate requirements into technical solutions and align execution with delivery priorities.

• You will work closely with the engineering team to guide the design and implementation of Java-based services on AWS, and collaborate with other engineering teams to align on APIs, integrations, and shared cloud architecture.
• This is a hybrid role requiring 1-2 days on-site per week in Chicago, IL. Candidates must currently reside in the local area or be willing to relocate at their own expense and work from the office starting day one.

Requirements

• 8+ years of relevant experience required. No degree required.

• Strong AWS expertise, including designing and operating cloud-native, highly available distributed systems.
• Advanced Java and/or Kotlin experience in production environments.
• Spring Boot for building microservices and REST APIs (e.g., Spring Web/MVC, dependency injection, configuration, actuator/health checks).
• Microservices architecture and distributed systems patterns, including service boundaries, resiliency, and fault tolerance.
• RESTful API design and implementation, including documentation via OpenAPI/Swagger.
• SQL and relational databases, including data modeling, query tuning, and performance optimization.
• NoSQL/non-relational data stores such as DynamoDB, MongoDB, or Cassandra.
• CI/CD and build/deploy automation, including pipelines, quality gates, and repeatable releases.
• Data streaming and asynchronous messaging using event-driven patterns (e.g., Kafka).
• Observability and production troubleshooting, including logging, metrics, tracing, and incident investigation.

• Strong technical communication skills - able to clearly explain complex designs and trade-offs to engineers, product owners, and managers.
• Collaborative mindset with the ability to work effectively across teams on shared architectures and dependencies.
• Technical leadership and ownership - driving decisions and follow-through on complex engineering problems.
• Strong problem-solving and analytical thinking, especially in debugging, production support, and performance issues.
• Ability to balance technical depth with delivery, making pragmatic decisions aligned with business priorities, while remaining primarily hands-on.

Benefits

• 401(k)
• Dental insurance
• Vision Insurance
• Disability insurance
• Employee assistance program
• Health insurance
• Health savings account
• Life insurance
• Paid time off
• Paid Holidays

Please follow the link to our website for a list of job openings in Engineering, IT, Project Management, and more! https://www.dsnworldwide.com

Compensation: $140,000 - 145,000 per year