Senior Java Software Engineer, JR312

Eleks; United States; On-site; USD 120,000 - 180,000; Full time

Job summary

ELEKS is seeking a Senior Java Developer in Chicago, IL to design, develop, and deliver enterprise Java applications. You will work on backend systems using Java 17+, Spring Boot, and a microservices architecture, leveraging AWS services and modern DevOps practices.

You will mentor peers, lead complex projects, and drive scalable, fault-tolerant solutions in a collaborative team environment. The role emphasizes delivering high-quality software, participating in architecture decisions, and

Qualifications

• 8+ years designing and developing enterprise Java applications (5+ years with a Master’s degree)
• Strong Java 17+ backend development skills
• Experience with relational and NoSQL databases
• Hands-on Spring Boot and Spring ecosystem
• RESTful API design and testing with Swagger/Postman/Assertible
• AWS services expertise (IAM, API Gateway, Aurora, RDS, DynamoDB, etc.)
• Messaging and event streaming (Kinesis, SQS/SNS, Kafka)
• CI/CD and DevOps practices with Jenkins
• Ability to deliver scalable, fault-tolerant backend systems

Responsibilities

• Perform complex programming and development tasks with minimal supervision
• Lead development and support teams, providing technical guidance
• Tackle complex system problems and provide timely resolutions
• Develop and maintain scalable backend software
• Ensure high quality through best practices and coding standards
• Mentor junior developers and promote team growth
• Collaborate with users and stakeholders to refine requirements
• Lead cross-functional initiatives and deliver business-value features
• Contribute to architecture decisions and design evaluations
• Support deployment and integration testing activities
• Align solutions with enterprise standards and reuse goals
• Take on additional duties as assigned by management

Skills

Java backend

Spring Boot

REST APIs

AWS services

Microservices

CI/CD pipelines

DevOps practices

Message streaming

Architectural patterns

Education

Bachelor's degree in CS/EE

Master's degree in CS

Tools

OpenAPI/Swagger

Postman

Assertible

Jenkins

Job description

ELEKS Software Development and Engineering Office is looking for a Senior Java Developer in Chicago, IL.

ABOUT CLIENT

Our client is building a world‑class digital platform that powers a broad portfolio of enterprise applications across mobile, web, cloud, and distributed computing environments. Their technology solutions are designed to improve productivity, profitability, and operational safety while supporting sustainable growth for businesses and communities worldwide.

REQUIREMENTS

• Bachelor’s degree in Computer Science, Electrical Engineering, or a related field
• 8+ years of experience designing and developing enterprise Java applications (5+ years with a Master’s degree in Computer Science or a related field)
• Strong expertise in Java 17+ and backend development
• Experience developing scalable software applications using relational and NoSQL databases
• Hands-on experience with Spring Boot and the Spring ecosystem
• Solid understanding of software architecture patterns, including MVC, Microservices, and Event-driven Architecture
• Experience designing and developing RESTful APIs
• Experience with API design and testing tools such as OpenAPI (Swagger), Postman, and Assertible
• Strong knowledge of AWS services, including IAM, API Gateway, Aurora, RDS, DynamoDB, Kinesis, S3, CloudWatch, Lambda, ALB, NLB, Fargate, SQS, SNS, and KMS
• Experience with messaging and event streaming technologies such as Amazon Kinesis, Amazon SQS, Amazon SNS, Apache Kafka, RabbitMQ, and Apache ActiveMQ
• Experience designing and maintaining CI/CD pipelines and DevOps practices using Jenkins or similar tools
• Experience delivering highly available, scalable, resilient, and fault-tolerant backend solutions
• Understanding of software architecture principles and experience contributing to technical design decisions
• Ability to work effectively under pressure and meet project deadlines
• Passion for technology and eagerness to contribute to a collaborative, team-oriented environment

RESPONSIBILITIES

• Competent to perform all programming and development assignments without close supervision; normally assigned the more complex aspects of systems work.
• 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, including responding to off-shift and weekend support calls.
• Works independently on complex systems or infrastructure components that may be used by one or more applications or systems.
• Drives application development focused on delivering business-valuable features
• Maintains high standards of software quality within the team by establishing good practices and habits.
• Identifies and encourages areas for growth and improvement within the team.
• Mentors junior developers.
• Communicates with end users and internal customers to help direct development, debugging, and testing of application software for accuracy, integrity, interoperability, and completeness.
• Leads the development of new functionality and applications on cross-functional teams
• Performs integration testing and customer acceptance testing of components that require careful planning and execution to ensure timely, quality results
• Participates in technology evaluation and recommendations.
• Applies an enterprise-wide view to solutions to support the adoption of standards and practices and promote reuse.
• Employee is also responsible for performing other job duties as assigned by management from time to time.

WHAT YOU WILL GET WITH ELEKS

• Close cooperation with a customer
• Challenging tasks
• Competence development
• Ability to influence project technologies
• Team of professionals
• Dynamic environment with low level of bureaucracy

ABOUT ELEKS

ELEKS is a custom software development company. We deliver value to our clients, thanks to our expertise and experience gained from working as a software innovation partner since 1991.

Our 2000+ professionals located in the Delivery Centers across Eastern Europe and sales offices in Europe and North America, provide our clients with a full range of software engineering services. These include product development, QA, R&D, design, technology consulting and dedicated teams.