10270

3Core Systems; Chicago (IL); Hybrid; USD 120,000 - 160,000; Full time

Job summary

3Core Systems, Inc in Chicago seeks a Senior Software Engineer to build backend services using Scala and Akka. You will work in a hybrid model with onsite presence required several days weekly, focusing on enterprise-grade backend systems and scalable architectures.

The candidate should have strong Java 8+ experience, 3+ years in Scala, and a track record of delivering reliable software using CI/CD practices. Collaboration with cross-functional teams is essential.

Qualifications

• As Senior Software Engineer, you will build platform notification services for CLIENT customers.
• Must have Java 8+ and Scala with Akka tech exposure.
• Experience with enterprise backend applications and cloud CI/CD tooling.

Responsibilities

• Development of services using Scala and Akka technologies.
• Mentor and assist software engineers, providing technical guidance.
• Maintain high standards of software quality within the team.
• Guide the team to develop structured application code and documentation.
• Communicate with end users and internal customers to refine features.
• Perform integration testing and customer acceptance testing.
• Perform other duties as assigned by CLIENT management.

Skills

AWS

CI/CD tools

Microservices

Scala

Enterprise backend

Scala Programming

CI/CD & Agile

Education

Bachelor’s degree

Master’s degree

Tools

Java 8+

Scala

Akka

Job description

Chicago, United States | Posted on 10/30/2026

Location: Chicago,IL (Hybrid-3 times a week onsite is mandatory)

Work ModelDetails: Monday and Wednesday in office

Duration: 10Months

Shift: M-F,8am - 5pm

Must Haves:

• 5+ years of software development experience using Java 8+
• 5+ years of Scala programming experience
• 4+ years of Akka technologies such as Streams, Actors, HTTP,Persistence.

Must HaveSkills/Attributes:

• AWS, CI/CD tools, Microservices, Scala
• Hands-on experience building enterprise backend applications. (8+ yrs),
• Scala Programming (3+ yrs),
• CI/CD & Agile Software Development (3+ yrs)

Required Education/Experience:

• Bachelor’s degree with 10+ years or Masters Degree with 8+ years

Required Qualifications:

• As a Senior Software Engineer, you will build platform notification servicesthat enable CLIENT customers to be alerted for events that are critical toefficiently operate CLIENT engines and machines.

Typical task breakdown:

• As a Senior Software Engineer you will be isresponsible for development of services using Scala and Akka technologies
• Competent to perform all programming, projectmanagement, and development assignments without close supervision; normallyassigned the more complex aspects of systems work.
• Works directly on complex application/technicalproblem identification and resolution
• Works independently on complex systems orinfrastructure components that may be used by one or more applications orsystems.
• Drivers application development focused arounddelivering business valuable features
• Mentors and assists software engineers,providing technical assistance and direction as needed
• Maintains high standards of software qualitywithin the team by establishing good practices and habits
• Identifies and encourage areas for growth andimprovement within the team
• Guides the team to develop structuredapplication/interface code, new program documentation, operations documentationand user guides in a casual, flexible environment
• Communicates with end users and internalcustomers to help direct development, debugging, and testing of applicationsoftware for accuracy, integrity, interoperability, and completeness
• Performs integration testing and customeracceptance testing of components that requires careful planning and executionto ensure timely, quality results.
• Employee is also responsible for performingother job duties as assigned by CLIENT management from time to time.

Required Technical Skills:

• 5+ years of software development experienceusing Java 8+
• 3+ years of Scala programming experience
• 2+ years of Akka technologies such as Streams,Actors, HTTP, Persistence

Top candidates will also have:

• Experience with design and implementation ofhigh-availability and reliable solutions
• Designing, developing, deploying and maintainingsoftware at scale.
• Application architectural patterns, such as MVC,Microservices, Event-driven, etc.
• Deploying software using CI/CD tools, such asAzure DevOps, Jenkins, etc.
• Deploying and maintaining software using AWS.Other AWS technologies, such as API Gateway, ALB, NLB, Fargate, Lambda, S3,CloudWatch, IAM, CloudFormation, etc.
• Developing software applications usingrelational and NoSQL databases such as PostgreSQL, AWS DynamoDB
• Working within an Agile framework (ideallyScrum)
• Must demonstrate solid knowledge of ComputerScience fundamentals, such as data structures and algorithms.
• Passion for technology and an eagerness tocontribute to a team-oriented environment
• Demonstrated leadership on small to medium-scaleprojects impacting strategic priorities

Nice to Have:

• Experience in functional programming
• Exposure to type level and Zio framework