OneMain Financial Jobs

About the role

We are seeking a Senior Software Engineer with strong expertise in Java Full Stack development to support the enhancement and modernization of our claims applications. This role focuses on building scalable, secure, and high‑performing solutions using Java, Spring Boot, REST APIs, microservices, and cloud technologies . You will work across both legacy and modern platforms, contribute to cloud‑native development, and collaborate closely with cross‑functional teams to deliver high‑quality business solutions.

In this role, you will:

· Enhance and support existing legacy claims applications as part of a broader consolidation effort

• Design, develop, and maintain applications using Java, JSP, Spring, Spring MVC, and Spring Boot

• Support the gradual migration from legacy systems to a cloud‑native architecture

• Build and expose RESTful APIs for BPM workflows, UI components, and downstream consumers

• Develop and enhance Spring Boot microservices that manage core business logic and data

• Ensure all data access aligns with governed API and target architecture standards

• Integrate services with internal systems such as policy administration, claims processing, payments, treasury, identity services, and external portals

• Work within a legacy technology stack including:

• JSP, HTML, JavaScript, CSS

• Java on Tomcat

• Sybase or other RDBMS

• UNIX batch processing

• SQR‑based reporting

• Participate in modernization initiatives while maintaining operational stability

• Develop and deploy services using AWS technologies (Fargate, Lambda, S3, Aurora PostgreSQL)

• Containerize applications using Docker

• Support CI/CD pipelines using GitLab

• Collaborate on hybrid runtime models (on‑prem Docker + AWS cloud services)

• Follow disciplined change management and integration governance practices

• Write unit and integration tests using JUnit and Mockito

• Support secure API design using OAuth‑based authentication

• Participate in code reviews, architectural discussions, and cross‑team collaboration

Work model:

We strive to provide flexibility wherever possible. Based on this role’s business requirements, this is a remote position open to qualified applicants in Toronto, ON . Regardless of your working arrangement, we support a healthy work‑life balance through our various wellbeing programs.

The working arrangements for this role are accurate as of the date of posting. These may change based on the project you are engaged in, as well as evolving business and client requirements. We will always be transparent about role expectations.

Please note: Some roles may require in‑person interviews at Cognizant offices or client locations based on project needs.

What you need to have to be considered

· Strong proficiency in Java, JSP, Spring MVC, and Spring Boot

• Experience with Tomcat application servers

• Hands‑on experience designing and developing REST APIs

• Solid understanding of relational databases, preferably Sybase and/or PostgreSQL

• Strong SQL skills, including Transact‑SQL (T‑SQL)

• Experience with AWS services (Fargate, Lambda, S3, Aurora PostgreSQL)

• Experience with Docker containerization

• CI/CD experience using GitLab

• Experience with UNIX shell scripting

• Familiarity with batch processing and reporting systems

This will help you stand out

· Experience in the Insurance domain

• Exposure to front‑end technologies such as Angular

• Experience working in hybrid environments (on‑prem + cloud)

• Strong collaboration, problem‑solving, and mentoring skills

Salary and Other Compensation:

The annual salary for this position is between $71,100 to $112,000 depending on experience and other qualifications of the successful candidate.

This position is also eligible for Cognizant’s discretionary annual incentive program, based on performance and subject to the terms of Cognizant’s applicable plans.

Benefits:

Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:

· Medical/Dental/Vision/Life Insurance

· Paid holidays plus Paid Time Off

· 401(k) plan and contributions

· Long-term/Short-term Disability

· Paid Parental Leave

· Employee Stock Purchase Plan

Disclaimer:

The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.

*Please note, this role cannot offer visa transfer or sponsorship now or in the future*

Cognizant is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.