Software Developer - API - Senior

Scope

• A senior API Software Developer with 8 years of experience will be responsible for creating and using APIs to translate functional specifications into working and tested applications. This includes developing detailed programming specifications user interface designs prototypes writing and/or generating code compiling data driven programs conducting unit tests and debugging code.

Assignment Deliverables

• Detailed design and specification documents for RESTful APIs including endpoints request/response models authentication and error handling.
• Clean scalable and secure REST APIs built using Java and Spring Boot adhering to best practices and company standards.
• Modular and decoupled microservices designed and deployed independently with clear inter-service communication protocols.
• Using APIs to develop application based on the business requirement to transform and route data.
• Comprehensive test coverage using tools like JUnit Mockito or Test Containers to ensure code reliability and prevent regressions.
• Efficient relational database schemas designed and implemented to support API data storage and retrieval.
• Profiled and optimized APIs for response time memory usage and throughput ensuring high performance under load.
• Secure API calls with proper authentication (e.g. OAuth2 JWT) authorization input validation and protection against common vulnerabilities (OWASP).
• Dockized applications with configuration files docker-compose scripts and Kubernetes manifests (if applicable) for smooth deployment.
• Integrated monitoring (e.g. Prometheus Grafana) and logging (e.g. ELK stack Logstash or Splunk) for operational visibility.
• Produce clear documentation for developed systems such as design deployment instructions and operational guides.
• Regular code reviews feedback sessions and mentorship to junior developers ensuring code quality and knowledge sharing.
• Weekly or sprint-based status updates on development progress blockers and delivered functionalities.
• Timely resolution of production issues regression fixes and performance improvements based on user feedback and testing.
• Available for any on-call on weekend for production issues.

Skills

Experience and Skill Set Requirements

A Note on the VOR Master Service Agreement:

The VOR Master Service Agreement which expires on April 5 2026 leaves some Contracts with funding unassigned for fiscal 2026-27. If the current statement of work expires on March 31 2026 the remaining funds can be used to exercise an option to extend the SOW beyond March 31 2026 based on business case approvals. Such extensions will be allowable only if the Master Service Agreement is extended beyond April 5 2026 and be upon the same terms conditions and covenants contained in the SOW.

The start date is subject to change based on security clearances and contract signing timelines.

Experience and Skillset Requirements

Mandatory Requirements

• Extensive experience in designing building and consuming REST APIs including experience with API documentation and testing.
• In-depth knowledge of integration patterns and best practices including experience designing and building integration solutions using Spring Integration
• In-depth knowledge of microservice architecture and experience building scalable highly available systems using various Azure Services.
• Hands-On experience in messaging queuing and event driven architecture.
• Experience with asynchronous communication multi-threading.
• Strong skills in SQL and experience working with relational databases such as SQL Server or Oracle.
• Knowledge on Integration with Oauth2 JWT SAML etc.
• Knowledge of data transformation techniques such as mapping and normalization and experience using them in a Spring Integration context.
• Experience with asynchronous communication multi-threading.
• Ability to transform data between different formats (JSON XML CSV).

Nice to Have Requirements

• Knowledge and experience in Criminal Justice Business and System

Desired Skills and Experience

• Strong proficiency in object-oriented programming and functional programming with modern Java features.
• Strong expertise in Java and the Java development ecosystem including experience with Spring Boot.
• In-depth knowledge of microservice architecture and experience building scalable highly available systems.
• Expertise in designing building and consuming REST APIs; knowledge of HTTP methods status codes and REST best practices
• In-depth knowledge of integration patterns and best practices including experience designing and building integration solutions using Spring Integration
• Experience with enterprise integration technologies such as JMS AMQP or REST and an understanding of how to use them in a Spring Integration context.
• Strong knowledge of XML and experience working with XML-based integration solutions such as XSLT and XPath.
• Knowledge of data transformation techniques such as mapping and normalization and experience using them in a Spring Integration context.
• Experience with message-oriented middleware and enterprise service buses such as Azure Service Bus
• Experience on Event Driven architecture experience on Azure Event Hub etc.
• Strong skills in SQL and experience working with relational databases such as SQL Server or Oracle.
• Understanding of security best practices and experience implementing authentication authorization and encryption.
• Strong experience with writing automated tests including unit API test and a deep understanding of the testing process.
• Familiarity with Kubernetes Helm or other container orchestration tools.
• Familiarity with Agile software development methodologies such as Scrum or Kanban and experience participating in sprint planning and retrospectives.
• Excellent communication skills both written and verbal and the ability to work effectively with both technical and non-technical stakeholders.
• A passion for staying up-to-date with the latest industry trends and technologies and a desire to continuously learn and improve your skills.
• Strong problem-solving and debugging skills and experience diagnosing and resolving complex issues.
• A track record of delivering high-quality robust and scalable solutions in a fast-paced deadline-driven environment.
• Strong analytical and troubleshooting abilities for complex systems.
• Clear verbal and written communication for technical and non-technical stakeholders..
• Capable of mentoring junior developers and contributing to architectural decisions.
• Ability to prioritize tasks manage deadlines and handle multiple responsibilities.

Resumes Evaluation/Criteria:

Criteria 1: Technical Design - 30 Points

• Strong expertise in Java and the Java development ecosystem including experience with Spring Boot.
• In-depth knowledge of microservice Event Driven architecture and experience building scalable highly available systems.
• Extensive experience with REST API design and development including experience with API documentation and testing.
• Practical knowledge in applying various design patterns and standards to the technical design and development.
• Strong skills in SQL and experience working with relational databases such as SQL Server.

Criteria 2: Integration - 30 Points

• In-depth knowledge of integration patterns and best practices including experience designing and building integration solutions using Spring Integration
• Hands-On experience in messaging queuing (Azure Service Bus) and event driven architecture.

Criteria 3: Technical Framework and Middleware - 25 Points

• In-depth knowledge of microservice architecture and experience building scalable highly available systems using various Azure Services.
• Must have prior experience in working with containerized environments such as Azure OpenShift Docker Kubernetes Microservices etc.
• Experience with message-oriented middleware and enterprise service buses such as Azure Service Bus.
• Experience on Event Driven architecture.

Criteria 4: Security - 10 Points

• Experience with Security and Web Services Security standards and frameworks. Must have extensive working experience in OAuth OpenID SAML 2.0 etc.
• Understanding of security best practices and experience implementing authentication authorization and encryption.

Criteria 5: Public Sector Experience - 5 Points

• Previous experience working in Government or Public Sector organization.

Knowledge Transfer

What needs to be KT

• Code & Documentations of all type assigned for this role.

To whom

• Project Manager / Team members

When

• 1:1 meetings / team meetings / documentation on SharePoint site throughout the duration of the project life cycle etc.

Must haves:

• Extensive experience in designing building and consuming REST APIs including experience with API documentation and testing.
• In-depth knowledge of integration patterns and best practices including experience designing and building integration solutions using Spring Integration
• In-depth knowledge of microservice architecture and experience building scalable highly available systems using various Azure Services.
• Hands-On experience in messaging queuing and event driven architecture.
• Experience with asynchronous communication multi-threading.
• Knowledge on Integration with Oauth2 JWT SAML etc.
• Strong skills in SQL and experience working with relational databases such as SQL Server or Oracle.

Nice to have:

• Knowledge and experience in Criminal Justice Business and System
• Knowledge of data transformation techniques such as mapping and normalization and experience using them in a Spring Integration context.
• Experience with asynchronous communication multi-threading.
• Ability to transform data between different formats (JSON XML CSV).