Back End Software Engineer

CGI•Smithfield, RI

1d•Onsite

About The Position

CGI is seeking to hire a highly technical Back End Software Engineer to modernize a legacy application, design clean and scalable APIs, and lead critical data migration efforts. You'll work across service layers, integration points, and data pipelines to build a reliable, extensible foundation for future capabilities. This role is ideal for engineers who understand Spring Boot at a framework level, design APIs with long term maintainability in mind, and can execute complex data migration patterns with precision. This is a Full-Time, On-Site employment opportunity located in Smithfield, RI.

Requirements

6-9 years of Java (Spring Boot / Spring Batch)
3+ years working with relational databases (schema design, stored procedures, performance tuning)
2+ years working with ETL tools or performing data migrations
Strong understanding of: REST API design principles, Spring Boot internals and configuration, Spring Batch job orchestration, SQL optimization and understanding of data design and modeling
Experience with Dev Assist tools (automation helpers, diagramming, code generation).
High ownership mindset — drives work from design through delivery.
Comfortable working across multiple concurrent business capabilities.
Bachelor's degree in computer science or related field.

Nice To Haves

Experience with SQL Server is a plus.
Experience with test automation tooling (JUnit, Mockito, Test-Containers) is a plus.
Experience with AWS (Lambda, RDS, S3, API Gateway) is a plus.

Responsibilities

Design RESTful APIs with clear resource modeling, versioning strategy, and predictable error handling.
Implement Spring Boot controllers, service layers, and repositories using best practice patterns (DTOs, mappers, validation layers).
Define and enforce API contracts using OpenAPI/Swagger, ensuring consistency across services.
Build middleware such as interceptors, filters, and exception handlers to standardize cross cutting concerns.
Optimize API performance through pagination, caching, connection pooling, and async/reactive patterns when appropriate.
Configure and tune Spring Boot internals including: Auto configuration, Dependency injection scopes, Actuator endpoints, Custom starters, Application context lifecycle.
Implement Spring Batch jobs for large scale data processing, chunking, retry logic, and fault tolerant workflows.
Build resilient integrations using Spring's WebClient, RestTemplate (legacy), and messaging templates.
Apply advanced Spring concepts such as conditional beans, profiles, configuration properties, and environment driven runtime behavior.
Ensure observability through structured logging, distributed tracing, and metrics instrumentation.
Design and execute data migration strategies including bulk loads, incremental syncs, and schema evolution.
Build ETL pipelines using Spring Batch, SQL scripts, or external ETL tools to ensure data continuity and integrity.
Perform data profiling, mapping, transformation, and validation to support migration accuracy.
Optimize relational database interactions through indexing strategies, query tuning, and connection management.
Collaborate with DBAs and data engineers to ensure safe migration execution under production constraints.
Refactor legacy services into modular, maintainable components aligned with modern architectural standards.
Introduce automation into CI/CD pipelines for build validation, regression detection, and deployment consistency.
Contribute to the design of a new, extensible platform that supports future domain capabilities.
Deliver reliably under aggressive timelines while maintaining engineering quality.