API/Integration Engineer – Journeyman

DecisionPoint Corporation

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

Posted 10/27/2026full-timeRemote • Illinois • United StatesMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing, developing, and maintaining APIs and integration services while applying secure coding principles and ensuring compliance with federal security requirements. Proficient in troubleshooting integration failures and maintaining technical documentation for seamless interoperability across systems.

Highest-signal resume keywords

API DevelopmentSecure Coding PrinciplesIntegration ServicesTechnical DocumentationTroubleshooting

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

API DesignUnit TestingData MappingIntegration TestingCloud IntegrationVersion ControlSoftware DevelopmentData ExchangeError HandlingInteroperability Validation

Soft Skills

Analytical SkillsCommunication SkillsCollaboration

Tools & Technologies

RESTful APIsOpenAPIJSON SchemaXML SchemaOAuth 2.0JavaC#.NETPythonAzure DevOps

Certifications & Qualifications

Relevant Software Development CertificationCloud Certification

Industry Keywords

Federal Security RequirementsDoD ComplianceConfiguration ManagementRelease ControlsAgile Methodologies

Tech Stack

Tools & technologies

AzureCloudCyber SecurityJavaJavaScriptMicroservicesNode.jsPythonSQLTypeScript.NET

About the role

Key responsibilities & impact

Design, develop, test, document, deploy, and maintain reusable APIs, integration services, interface adapters, and data exchanges
Translate requirements, interface needs, business rules, and system constraints into secure integration solutions
Develop interfaces supporting reliable data exchange across applications, services, databases, cloud environments, and external systems
Create reusable integration components, shared services, transformation logic, and error-handling patterns
Maintain interface specifications, API documentation, data mappings, schemas, and transformation rules
Define request and response structures, validation rules, error responses, dependencies, authentication requirements, and performance expectations
Develop unit, integration, contract, regression, and representative-data tests
Verify interface behavior against specifications, schemas, mappings, and service contracts
Coordinate interoperability validation and resolve interface discrepancies
Apply secure coding and implement authentication, authorization, encryption, certificate, logging, and data-protection controls
Support application, interface, platform, and data migration activities
Analyze legacy interfaces and develop migration, replacement, coexistence, or transition approaches
Monitor, investigate, and troubleshoot interface failures, data mismatches, timeouts, authentication errors, schema violations, and processing exceptions
Perform root-cause analysis and implement corrective actions
Develop retry, reconciliation, exception-management, alerting, and recovery capabilities
Coordinate troubleshooting across application, database, network, cloud, cybersecurity, and external-system teams
Participate in peer, code, design, interface, and architecture reviews
Use version control, continuous integration, automated testing, deployment pipelines, and release-management practices
Maintain technical documentation, configuration information, deployment instructions, limitations, and troubleshooting procedures
Participate in Agile ceremonies and release-readiness activities
Provide estimates and identify dependencies, risks, assumptions, constraints, and external decisions
Support Government demonstrations, user acceptance testing, operational validation, and stakeholder feedback
Protect sensitive data and comply with federal, DoD, security, privacy, records-management, and configuration-management requirements
Improve API governance, interoperability, testing, documentation, monitoring, and integration practices

Requirements

What you’ll need

Active Secret clearance or higher
Bachelor’s degree in computer science, information technology, software engineering, or a related field, or an equivalent permitted by the applicable labor category
At least six years of relevant professional experience
Experience developing, testing, and maintaining software applications
Experience designing, developing, integrating, or consuming APIs
Experience developing and maintaining unit tests
Experience applying secure coding principles
Experience using version-control systems and structured source-code management practices
Experience developing or maintaining interfaces, adapters, integration services, or data exchanges
Ability to prepare and maintain interface specifications, API documentation, data mappings, schemas, or transformation rules
Ability to develop or maintain contract tests and validate interoperability between systems
Ability to diagnose and resolve integration failures, data-mapping issues, interface errors, and system dependencies
Relevant software-development or cloud certification from a recognized provider
Ability to collaborate 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: federal or Department of Defense software-development, systems-integration, or modernization program experience
Preferred: RESTful APIs, web services, asynchronous integrations, event-driven services, or message-based integrations
Preferred: OpenAPI, JSON Schema, XML Schema, API gateways, service meshes, enterprise service buses, or message brokers
Preferred: OAuth 2.0, OpenID Connect, mutual TLS, public key infrastructure, tokens, or certificates
Preferred: 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

Comp & perks

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