API/Integration Engineer – Journeyman

This is a fully remote position, open to applicants in Illinois.

📋 Description

• Design, develop, test, document, deploy, and maintain reusable APIs, integration services, interface adapters, and data exchanges.

• Interpret requirements, interface needs, business rules, and system constraints into secure integration solutions.

• Create interfaces that ensure reliable data exchange among applications, services, databases, cloud environments, and external systems.

• Develop reusable integration components, shared services, transformation logic, and error-handling patterns.

• Keep interface specifications, API documentation, data mappings, schemas, and transformation rules up to date.

• Define request and response structures, validation rules, error responses, dependencies, authentication requirements, and performance expectations.

• Create unit, integration, contract, regression, and representative-data tests.

• Verify interface functionality against specifications, schemas, mappings, and service contracts.

• Coordinate interoperability validation and address interface discrepancies.

• Implement secure coding practices and establish authentication, authorization, encryption, certificate management, logging, and data protection controls.

• Assist with application, interface, platform, and data migration efforts.

• Analyze legacy interfaces and formulate migration, replacement, coexistence, or transition strategies.

• Monitor, investigate, and troubleshoot interface failures, data mismatches, timeouts, authentication errors, schema violations, and processing exceptions.

• Conduct root-cause analysis and enact corrective measures.

• Develop retry, reconciliation, exception management, alerting, and recovery mechanisms.

• Facilitate troubleshooting across application, database, network, cloud, cybersecurity, and external-system teams.

• Engage in peer, code, design, interface, and architecture reviews.

• Utilize version control, continuous integration, automated testing, deployment pipelines, and release management practices.

• Maintain technical documentation, configuration details, deployment guidelines, limitations, and troubleshooting procedures.

• Participate in Agile ceremonies and release-readiness initiatives.

• Provide estimates and identify dependencies, risks, assumptions, constraints, and external decisions.

• Support Government demonstrations, user acceptance testing, operational validation, and stakeholder feedback.

• Safeguard sensitive data and adhere to federal, DoD, security, privacy, records management, and configuration management requirements.

• Enhance API governance, interoperability, testing, documentation, monitoring, and integration practices.

⛳️ Requirements

• Active Secret clearance or higher.

• Bachelor’s degree in computer science, information technology, software engineering, or a related field, or an equivalent recognized by the applicable labor category.

• A minimum of six years of relevant professional experience.

• Experience in developing, testing, and maintaining software applications.

• Proficiency in designing, developing, integrating, or consuming APIs.

• Experience in developing and maintaining unit tests.

• Familiarity with secure coding principles.

• Experience with version-control systems and structured source-code management practices.

• Experience in developing or maintaining interfaces, adapters, integration services, or data exchanges.

• Ability to prepare and sustain interface specifications, API documentation, data mappings, schemas, or transformation rules.

• Capability to develop or maintain contract tests and validate interoperability between systems.

• Proficient in diagnosing and resolving integration failures, data-mapping issues, interface errors, and system dependencies.

• Relevant software-development or cloud certification from a recognized provider.

• Ability to collaborate effectively with developers, architects, data specialists, testers, cybersecurity personnel, platform engineers, external-system teams, and Government stakeholders.

• Strong analytical, troubleshooting, technical documentation, and communication skills.

• Preferred: Experience in federal or Department of Defense software development, systems integration, or modernization programs.

• Preferred: Knowledge of RESTful APIs, web services, asynchronous integrations, event-driven services, or message-based integrations.

• Preferred: Familiarity with OpenAPI, JSON Schema, XML Schema, API gateways, service meshes, enterprise service buses, or message brokers.

• Preferred: Understanding of OAuth 2.0, OpenID Connect, mutual TLS, public key infrastructure, tokens, or certificates.

• Preferred: Experience with Java, C#, .NET, Python, JavaScript, TypeScript, Node.js, relational databases, SQL, cloud integration services, containers, microservices, serverless services, automated testing, DevSecOps, Jira, Azure DevOps, Confluence, GitHub, or GitLab.

• Preferred: Familiarity with DoD security requirements, DISA Security Technical Implementation Guides, interface control processes, configuration management, and release controls.

🏝️ Benefits

• Equal Employment Opportunity and Affirmative Action employer.

• Authorization for DecisionPoint Corporation to share submitted resumes and personal information with subsidiaries, affiliates, and teaming partners for consideration for this and comparable positions.