API/Integration Engineer (Journeyman)

Overview

DecisionPoint seeks two API/Integration Engineers to design, build, test, document, and maintain reusable APIs, interface adapters, and data exchanges for the USMEPCOM ENLIST program. These roles support interoperability across the assigned application portfolio and help ensure that mission systems exchange information securely, accurately, and reliably.

The API/Integration Engineers maintain interface specifications, data mappings, and contract tests; support application and data migration; diagnose integration failures; and coordinate technical solutions across development, architecture, data, testing, cybersecurity, cloud, and Government stakeholder teams.

These positions are remote, with Chicago-area candidates preferred.

Note: By applying to this position, you acknowledge and consent to having your resume included in an active competitive government contract bid.

Duties & Responsibilities

The API/Integration Engineers will:

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

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

• Develop interfaces that support reliable data exchange across applications, services, databases, cloud environments, and external systems.

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

• Prepare and maintain interface specifications, interface control information, API documentation, data mappings, schemas, and transformation rules.

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

• Develop and maintain unit tests, integration tests, contract tests, regression tests, and representative test data.

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

• Coordinate with consuming and providing systems to validate interoperability and resolve interface discrepancies.

• Apply secure coding practices to APIs, adapters, integration services, and data-processing components.

• Implement approved 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.

• Support integration planning, cutover preparation, migration validation, and post-transition verification.

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

• Perform root-cause analysis and implement durable corrective actions for recurring integration problems.

• Develop appropriate retry, reconciliation, exception-management, alerting, and recovery capabilities.

• Coordinate integration troubleshooting with application, database, network, cloud, cybersecurity, and external-system teams.

• Participate in peer reviews, code reviews, design reviews, interface reviews, and architecture discussions.

• Use approved version-control practices, including branching, commits, pull requests, merges, and release tagging.

• Support continuous integration, automated testing, deployment pipelines, and release-management activities.

• Maintain accurate technical documentation, configuration information, deployment instructions, known limitations, and troubleshooting procedures.

• Participate in sprint planning, backlog refinement, daily coordination, demonstrations, reviews, retrospectives, and release-readiness activities.

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

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

• Protect sensitive data and comply with applicable federal, DoD, security, privacy, records-management, and configuration-management requirements.

• Contribute to continuous improvement of API governance, interoperability, testing, documentation, monitoring, and integration practices.

Qualifications

Required Qualifications

Candidates must possess all the following:

• An active Secret clearance or higher.

• A 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.

• A 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 Qualifications

The following qualifications are preferred:

• Experience supporting federal or Department of Defense software-development, systems-integration, or modernization programs.

• Experience integrating mission-critical, regulated, security-sensitive, or high-availability systems.

• Experience developing RESTful APIs, web services, asynchronous integrations, event-driven services, or message-based integrations.

• Experience with OpenAPI specifications, JSON Schema, XML Schema, or comparable interface-definition standards.

• Experience with API gateways, service meshes, enterprise service buses, integration platforms, or message brokers.

• Experience with OAuth 2.0, OpenID Connect, mutual TLS, public key infrastructure, tokens, certificates, or comparable API-security mechanisms.

• Experience with Java, C#, .NET, Python, JavaScript, TypeScript, Node.js, or comparable development technologies.

• Experience with relational databases, structured query languages, data transformation, or data-validation technologies.

• Experience with cloud integration services in AWS, Azure, or another approved cloud environment.

• Experience with containers, microservices, serverless services, or cloud-native integration patterns.

• Experience with contract-testing tools, API-testing tools, automated test frameworks, or service-virtualization technologies.

• Experience with continuous integration, continuous delivery, automated deployment, and DevSecOps practices.

• Experience using Jira, Azure DevOps, Confluence, GitHub, GitLab, or comparable development and collaboration tools.

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

• Experience supporting data migration, application modernization, or transition from legacy interfaces.

Our Equal Employment Opportunity Policy

• EEO and Affirmative Action Policy: DecisionPoint Corporation is an Equal Employment Opportunity and Affirmative Action employer. It is the policy of DecisionPoint Corporation to provide equal employment opportunity in accordance with all applicable Equal Employment Opportunity/Affirmative Action laws, directives and regulations to all employees and qualified applicants without regard to race, ethnicity, color, religion, national origin, sex, age, disability status, pregnancy, sexual orientation, gender identity, genetic information, protected veteran status, or any other protected status under Federal, State or Local laws.
• Pay Transparency Policy: In accordance with Presidential Executive Order 13665, DecisionPoint Corporation will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor's legal duty to furnish information.
• Authorization to Share Resume and Personal Information: By expressing your interest and submitting your resume for this position, you authorize DecisionPoint Corporation to share your resume, as well as personal information included on the resume, with its subsidiaries, affiliates and teaming partners for the purpose of considering you for this position and other available positions requiring comparable skills, education and experience. Should DecisionPoint Corporation. or its affiliates and teaming partners wish to initiate pre-employment discussions, you will be asked to complete an employment application and related employment documents.