Senior Software Engineer; Java & AWS

Diversified Services Network, Inc. (DSN) is seeking a full-time Senior Software Engineer – Java & AWS to join our team! We offer full benefits, PTO, 401k, and more! This is a hybrid role requiring 2 days per week on-site at the candidate’s preferred location:
Chicago, IL or Peoria, IL. If you are a seasoned back-end Java engineer with strong AWS expertise ready to work independently on complex systems within an extremely reputable, stable Fortune 500 company — let’s talk!

We are seeking a Senior Software Engineer – Java & AWS to join our Software Engineering organization in a hybrid role at your choice of Chicago, IL or Peoria, IL. Reporting to the Software Engineering Manager, you will work as part of an Agile Scrum team contributing to new program development and maintenance of existing mobile, web, cloud, and server computing systems.

This is a senior-level individual contributor role requiring deep back-end engineering expertise, strong cloud knowledge, and the ability to perform complex programming, development, integration, and system administration assignments without close supervision.

• Design, code, test, and debug high-complexity programs; configure and customize purchased software solutions of high complexity.
• Work independently on complex processes and modules used by one or more programs, systems, or infrastructure components; develop major system modules, programs, or infrastructure releases based on requirements gathered from system customers.
• Perform integrated testing and customer acceptance testing requiring careful planning and execution to ensure timely, quality results; perform integration tasks for in-house developed and purchased hardware/software solutions.
• Work on complex application and technical problem identification and resolution, including responding to off-shift and weekend support calls as needed.
• Provide project management, programming, and systems leadership, guidance, and assistance to other team members.
• Assist customers with documentation, training, and usability efforts.

• You will work within an Agile Scrum team with significant interaction across all ceremonies — Daily Standups, Sprint Planning, Grooming, Retrospectives, Demos, and PR Reviews — and will engage with other teams as needed. Strong collaboration is required.

• Bachelor’s degree in Computer Science, Electrical Engineering, or a related field with 8+ years of software development experience; or Master’s degree with 6+ years of experience.

• 8+ years of Java development experience (6+ with a Master’s degree); solid knowledge of computer science fundamentals including data structures and algorithms.
• 3+ years of AWS experience including Cloud Formation templates, ECS clusters, Lambda, Fargate, Amazon Elasticsearch, S3, and strong understanding of IAM roles and policies.
• Proven experience designing, developing, deploying, and maintaining software at scale using architectural patterns such as MVC, Microservices, and Event‑driven architecture.
• Experience with relational and No
  
  SQL databases; deploying software via CI/CD tools such as Jenkins or Azure Dev Ops; and working within an Agile/Scrum framework.
• Experience with batch or stream processing systems (AWS SQS, SNS, Kinesis); designing RESTful APIs; API tools such as Swagger, Postman, or Assertible; and data stores including DynamoDB, MongoDB, Cassandra, Redis, Elasticsearch, MySQL, or Oracle.
• Hands‑on experience with test‑driven development (TDD), behavior‑driven development (BDD), and testing tools such as Selenium and Cucumber integrated into CI/CD pipelines.

• Ability to work effectively under pressure and within tight time constraints.
• Genuine passion for technology and an eagerness to contribute to a collaborative, team‑oriented environment.

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

Compensation: $ - $ per year