IT Software Engineer 5 (Sr. Java Backend Developer with AWS)
3Core Systems
Chicago, IL · Posted September 22, 2026
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November 2026
- #1Best cities for government pay after cost of living$146k · of 18
- #1Cities with the most jobs that do not need a four-year degree in the Midwest684 jobs · of 51
- #1Cities with the most jobs that do not need a four-year degree in the Great Lakes684 jobs · of 36
- #1Best cities for software and engineering jobs in the Midwest1,140 openings · of 59
- #1Best cities for software and engineering jobs in the Great Lakes1,140 openings · of 48
- #1Best all-round cities for mid-career professionals in the Midwest80 / 100 · of 20
Rankings about engineering jobs
- Best cities for software and engineering jobs #1 San Francisco (3,412 openings)
- Best cities for engineering pay after cost of living #1 San Mateo ($216k)
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- Employers with the most engineering jobs #1 Amazon (2,992 roles)
How AI is used in this kind of work
Among computer occupations, all other, AI is already used for a large share of the tasks. Measured exposure for computer occupations, all other: 31% (high).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
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About the job
Job Title: IT Software Engineer 5 (Sr. Java Backend Developer with AWS) Location: 540 W. Madison, Chicago, IL (Hybrid: will need to go into office up to 2x a week; this role could change where they need to go in office 5 days a week) Duration: 12 months contract Interview Process: 2 rounds: 1st round will be virtual (1 hr.), 2nd round will be panel for onsite interview. Experience Level: Min 10yrs - Max 15yrs Job Description: Senior Software Engineer provides technical leadership in design, development, testing and deployment of Client’s state-of-the-art digital platform hosted on AWS. This position will build a world class platform to host a wide range of digital applications. Position’s Contributions to Work Group: Team member contributing to programming, project management, and development assignments. Working on backend services in Client’s Digital platform. Typical task breakdown: · As a Senior Software Engineer you will be responsible for designing and developing backend RESTful API web services using Microservices architecture. · Be responsible for overseeing and mentoring other developers and handle code reviews. · Acts as Team Leader for development and support groups; provides programming and application/technical leadership, guidance, and assistance to other team members. · Works directly on complex application/technical problem identification and resolution. · Drives application development focused around delivering valuable business features. · Maintains high standards of software quality within the team by establishing good practices and habits. · Guide the team to develop a structured application/interface code, new program documentation, operations documentation and user guides in a casual, flexible environment. · Lead development of new functionality and applications on cross-functional Agile project teams. Education & Experience Required: · Bachelor’s degree in computer science or electrical engineering or related field is required w/ 8+ years’ experience in this capacity is needed. · Master’s degree with 6+ years’ experience in capacity is needed. · No degree, then they must have a minimum of 10+ years’ experience in this capacity. Technical Skills (Required): · 10+ years or more of experience in designing and developing software applications in Java. Skills: · 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. Required Experience: · Experience software development experience using Java 17 or higher and Spring Boot RESTful API development. · Experience deploying and maintaining software using public clouds such as AWS or Azure. · Message streaming solutions, such as AWS Kinesis, AWS SQS, AWS SNS, Apache Kafka, RabbitMQ, Apache ActiveMQ, Azure Event Hub. · Datastores such as AWS Aurora, AWS RDS, AWS DynamoDB, PostgreSQL, MySQL, Oracle, ElasticSearch, MongoDB, Cassandra, Redis. · Deploying software using CI/CD tools such as Azure Devops, Jenkins, GoCD, etc. · Working within an Agile framework (ideally Scrum). Proven experience in many of the following: · Designing, developing, deploying and maintaining software at scale. · Developing software applications using relational and NoSQL databases. · Application architectural patterns, such as MVC, Microservices, Event-driven, etc. · Deploying software using CI/CD tools, such as Jenkins, Azure DevOps, GoCD, etc · Deploying and maintaining software using public clouds such as AWS or Azure. · Working within an Agile framework (ideally Scrum) · Experience with AI tools is a BIG PLUS** Strong understanding and/or experience in many of the following: · Message streaming solutions, such as AWS Kinesis, AWS SQS, AWS SNS, Apache Kafka, RabbitMQ, Apache ActiveMQ. · Experience designing well-defined Restful APIs. · Hands on experience with API tools such as Swagger, Postman and Assertible o Test Driven Development and Behavior Driven Development. · Hands on experience with testing tools such as Cucumber and Selenium and their integration into CI/CD pipelines. · Datastores such as AWS Aurora, AWS RDS, AWS DynamoDB, MongoDB, ElasticSearch, Cassandra, Redis, MySQL, Oracle. o Other AWS technologies, such as API Gateway, ALB, NLB, Fargate, Lambda, S3, CloudWatch, etc. · Debugging and maintaining software in Linux or Unix platforms. Soft Skills (Required): · Must demonstrate solid knowledge of Computer Science fundamentals, such as data structures and algorithms. · Ability to work under pressure and within time constraints. · Passion for technology and an eagerness to contribute to a team-oriented environment. · Demonstrated leadership on small to medium-scale projects impacting strategic priorities. Disqualifiers/Red Flags: · If candidate is not in local area, please do not submit. · If the candidate’s current place of residence is not on resume, they will be DQ.