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Api Engineer Jobs in Virginia (NOW HIRING)

Cymertek

API Developer

Tysons, VA · On-site

... API Engineer, Web Services Developer, Integration Developer, Software Engineer, Cloud Developer, Full Stack Developer, Microservices Developer, Systems Developer, DevOps Engineer, etc. DEGREE (Level ...

Cymertek

API Developer

Reston, VA · On-site

... API Engineer, Web Services Developer, Integration Developer, Software Engineer, Cloud Developer, Full Stack Developer, Microservices Developer, Systems Developer, DevOps Engineer, etc. DEGREE (Level ...

Cymertek

API Developer

Chantilly, VA · On-site

... API Engineer, Web Services Developer, Integration Developer, Software Engineer, Cloud Developer, Full Stack Developer, Microservices Developer, Systems Developer, DevOps Engineer, etc. DEGREE (Level ...

Cymertek

API Developer

Tysons, VA

... API Engineer, Web Services Developer, Integration Developer, Software Engineer, Cloud Developer, Full Stack Developer, Microservices Developer, Systems Developer, DevOps Engineer, etc. DEGREE (Level ...

Cymertek

API Developer

Chantilly, VA · On-site

... API Engineer, Web Services Developer, Integration Developer, Software Engineer, Cloud Developer, Full Stack Developer, Microservices Developer, Systems Developer, DevOps Engineer, etc. DEGREE (Level ...

Cymertek

API Developer

Reston, VA · On-site

... API Engineer, Web Services Developer, Integration Developer, Software Engineer, Cloud Developer, Full Stack Developer, Microservices Developer, Systems Developer, DevOps Engineer, etc. DEGREE (Level ...

Tandym

API Developer

Vienna, VA · On-site +1

A top Fortune 50 financial institution is seeking an API Developer for a contract role. The position is remote, requiring on-site interviews in Vienna, VA; Winchester, VA; or Pensacola, FL. About the ...

LT Consulting

API Developer

Chantilly, VA

Description LT Consulting is looking for an API developer to develop custom solutions for our clients. The role will focus on back end development using a variety of software languages. This position ...

UNCOMN

API Standards Developer

Arlington, VA

$97K - $125K/yr

UNCOMN is seeking an API Standards Developer (Software Developer 3-4, Mid/Senior-Level) to: * Lead the development and maintenance of the War Data Platform (WDP) API Technical Standards Framework.

Precision Technologies Corp

Nodejs API Developer

Sterling, VA · On-site

$50.75 - $65.50/hr

Nodejs API Developer Location: Sterling, VA - Hybrid from day one Type: Contract Responsibilities: * Design, develop, and maintain RESTful API s and microservices using Node.js and Express.js. * Good ...

NT Concepts

Java API Developer

Herndon, VA · Remote

$52.50 - $67.75/hr

We are seeking a Mid-level API Java Developer , to join our team. Working at NT Concepts means that you are part of an innovative, agile company dedicated to solving the most critical challenges in ...

NT Concepts

Java API Developer

Herndon, VA · On-site

$52.50 - $67.75/hr

We are seeking a Mid-level API Java Developer , to join our team. Working at NT Concepts means that you are part of an innovative, agile company dedicated to solving the most critical challenges in ...

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Api Engineer information

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$25

$53

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How much do api engineer jobs pay per hour?

As of May 28, 2026, the average hourly pay for api engineer in Virginia is $53.17, according to ZipRecruiter salary data. Most workers in this role earn between $42.88 and $61.73 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as an API Engineer, and why are they important?

To thrive as an API Engineer, you need strong programming skills (often in languages like Java, Python, or Node.js), a solid understanding of RESTful and/or GraphQL APIs, and relevant experience or a degree in computer science or a related field. Familiarity with API management tools (such as Postman, Swagger, or Apigee), cloud platforms, and authentication protocols like OAuth is typically expected. Excellent problem-solving abilities, attention to detail, and effective communication skills help you collaborate with cross-functional teams and address integration challenges. These competencies are crucial for building secure, scalable, and reliable APIs that enable seamless data exchange and power modern applications.

How does an API Engineer typically collaborate with frontend and backend teams during the development lifecycle?

API Engineers play a crucial role in bridging the gap between frontend and backend teams. They often work closely with frontend developers to understand data requirements and ensure that APIs deliver the necessary information efficiently and securely. Simultaneously, they collaborate with backend engineers to integrate APIs with databases and other services, ensuring robust performance and scalability. Regular communication and participation in agile ceremonies like sprint planning or stand-ups help prevent misalignments and keep development on track.

What does an API Engineer do?

An API Engineer is responsible for designing, developing, and maintaining application programming interfaces (APIs) that allow different software systems to communicate with each other. They ensure APIs are efficient, secure, and scalable, often working closely with front-end and back-end developers to integrate new features or services. API Engineers also write documentation, perform testing, and troubleshoot any issues related to API functionality. Their work is essential in enabling seamless data exchange and connectivity between various platforms and applications.

What is the difference between Api Engineer vs Software Developer?

AspectApi EngineerSoftware Developer
Required CredentialsBachelor's in CS or related, API-specific certificationsBachelor's in CS or related, general programming certifications
Work EnvironmentFocus on API design, development, and integrationDevelops a wide range of software applications
Employer & Industry UsageTech companies, SaaS providers, API-centric businessesBroadly across all industries, including tech, finance, healthcare
Search & Comparison IntentUnderstanding API-specific roles, skills, and responsibilitiesGeneral software development roles and career paths

Api Engineers specialize in designing, developing, and maintaining APIs to enable software communication, often working closely with backend systems. Software Developers create a wide range of applications across various platforms. While both roles require programming skills and similar educational backgrounds, Api Engineers focus more on API architecture and integration, whereas Software Developers work on broader software solutions.

What are popular job titles related to Api Engineer jobs in Virginia? For Api Engineer jobs in Virginia, the most frequently searched job titles are:
What job categories do people searching Api Engineer jobs in Virginia look for? The top searched job categories for Api Engineer jobs in Virginia are:
Api Engineer jobs near you
Oracle Integration & API Engineer

Oracle Integration & API Engineer

CACI International, Inc.

Ashburn, VA • On-site

$106.40K - $143.20K/yr

Full-time

Medical, Retirement, PTO

Posted 20 days ago

Job description

Job Title: Oracle Integration & API Engineer
Job Category: Information Technology
Time Type: Full time
Minimum Clearance Required to Start: None
Employee Type: Regular
Percentage of Travel Required: Up to 25%
Type of Travel: Continental US
* * *
The Opportunity:
CACI is seeking an Oracle Integration and API Engineer to design, build, and sustain the integration fabric that connects Oracle Fusion Cloud HCM to the vast federal HR technology ecosystem. A large-scale federal HCM modernization program will replace legacy HR systems across multiple federal agencies serving federal civilian employees, and reliable integrations are the connective tissue that makes it all work. You will engineer bidirectional interfaces between Oracle Fusion Cloud HCM and systems including EHRI, eOPF, USA Staffing, USA Performance, Employee Express, MyPay, and federal payroll shared service providers (NFC, DFAS, and others) - all routed through the federal API Management (APIM) gateway using OAuth 2.0, REST/JSON, and OpenAPI 3.0 standards. Using Oracle Integration Cloud (OIC) and Oracle HCM APIs, you will build resilient, secure, and high-performance integration flows that meet program uptime SLAs. This is an exceptional opportunity for an integration engineer who wants to architect the plumbing behind one of the largest federal HR cloud transformation programs. This position is at the T4 (senior) level, suited for an experienced technical professional who operates with significant independence, resolves complex technical challenges using advanced techniques, and provides guidance and mentorship to less experienced team members.
Responsibilities:
  • Design, develop, and maintain integration interfaces between Oracle Fusion Cloud HCM and federal HR ecosystem systems including EHRI (XML/SFTP), eOPF (EDF/FDF/IDF feeds), USA Staffing (RPI/NHI/TUAPI), USA Performance, Employee Express, and MyPay
  • Engineer bidirectional payroll integration interfaces with federal payroll shared service providers (e.g., NFC, DFAS, IBC, GSA), implementing HCM Extract and payroll costing flows per provider-specific file specifications
  • Build and configure integration flows using Oracle Integration Cloud (OIC), leveraging OIC adapters, orchestration patterns, error handling, and retry logic to meet program uptime SLAs
  • Implement all integration endpoints through the federal API Management (APIM) gateway, adhering to OAuth 2.0 authentication, REST/JSON message formats, and OpenAPI 3.0 specification standards
  • Develop webhook-based event-driven integrations and near-real-time data synchronization flows for time-sensitive transactions including benefits enrollment, payroll changes, and personnel action notifications
  • Design and implement integration monitoring dashboards, alerting rules, and automated error recovery workflows to ensure proactive issue detection and resolution within SLA timeframes
  • Create and maintain comprehensive integration technical design documents, interface control documents (ICDs), data mapping specifications, and API documentation using OpenAPI 3.0 format
  • Support FEHB Data Hub integration for benefits carrier connectivity, implementing enrollment, reconciliation, and premium remittance data flows per federal specifications
  • Collaborate with cybersecurity engineers to ensure all integration endpoints implement FIPS 140-3 encryption, CUI handling protocols, and SCIM 2.0 identity provisioning where required
  • Participate in SAFe Agile ceremonies, contributing to sprint planning, backlog refinement, and integration testing coordination across functional and technical Agile Release Trains
  • Support parallel payroll validation testing by building automated comparison tools that reconcile Oracle Fusion Cloud HCM payroll outputs against legacy system outputs for each agency migration wave
  • Apply established methods, standards, and practices to independently resolve functional and technical issues of moderate scope, contributing to team knowledge bases and consulting with senior staff on complex or unfamiliar problems as they arise
  • ommunicate effectively with project team members and direct stakeholders to report progress, explain technical approaches, and support collaborative problem-solving within assigned workstreams and Agile Release Train ceremonies

Qualifications:
Required:
  • Applicable combination of education and experience:
    • T3 - Bachelor's degree and 4+ years of professional experience in integration development, API engineering, or middleware administration for enterprise applications. 3+ years of hands-on experience developing integrations using Oracle Integration Cloud (OIC), Oracle SOA Suite, or equivalent enterprise integration platforms
    • T4 - Bachelor's degree and 6+ years of professional experience in integration development, API engineering, or middleware administration for enterprise applications. 5+ years of hands-on experience developing integrations using Oracle Integration Cloud (OIC), Oracle SOA Suite, or equivalent enterprise integration platforms
    • T5 - Bachelor's degree and 9+ years of professional experience in integration development, API engineering, or middleware administration for enterprise applications. 8+ years of hands-on experience developing integrations using Oracle Integration Cloud (OIC), Oracle SOA Suite, or equivalent enterprise integration platforms
  • Strong proficiency in REST API development, JSON/XML data formats, OAuth 2.0 authentication, and OpenAPI 3.0 specification design
  • Experience with Oracle Fusion Cloud HCM APIs including SOAP/REST web services, HCM Extracts, HDL/HSDL, BIP reports, and BI Publisher for data exchange
  • Demonstrated experience with SFTP, message queuing, and file-based integration patterns for batch data exchange in enterprise environments
  • Familiarity with CI/CD pipelines and version control systems (Git) for managing integration artifacts in a DevOps environment
  • Ability to work within SAFe Agile delivery teams and collaborate across functional, technical, and security team boundaries
  • Must be able to obtain and maintain a Public Trust clearance (US Citizenship required)
  • Additional experience may substitute for degree

Desired:
  • 6+ years of integration engineering experience with significant Oracle Fusion Cloud or Oracle ERP Cloud integration work
  • Oracle Cloud Infrastructure (OCI) or Oracle Integration Cloud certification
  • Experience integrating with federal HR systems such as EHRI, eOPF, USA Staffing, NFC payroll, DFAS payroll, or Employee Express
  • Familiarity with the federal APIM gateway architecture, federal API management standards, or FedRAMP-authorized integration environments
  • Experience with event-driven architectures, webhooks, and real-time streaming integration patterns
  • Knowledge of federal data standards including EHRI XML schemas, eOPF document format specifications (EDF/FDF/IDF), and HR-XML standards
  • Python, Groovy, or JavaScript scripting proficiency for integration transformation logic and automated testing
  • Experience with Oracle Cloud technologies including Oracle Integration Cloud (OIC) and/or Oracle Cloud Infrastructure (OCI) in enterprise HCM or ERP environments

This position is contingent on funding and may not be filled immediately. However, this position is representative of positions within CACI that are consistently available. Individuals who apply may also be considered for other positions at CACI.
What You Can Expect:
A culture of integrity.
At CACI, we place character and innovation at the center of everything we do. As a valued team member, you'll be part of a high-performing group dedicated to our customer's missions and driven by a higher purpose - to ensure the safety of our nation.
An environment of trust.
CACI values the unique contributions that every employee brings to our company and our customers - every day. You'll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.
A focus on continuous growth.
Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground - in your career and in our legacy.
Pay Range:
There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.
The proposed salary range for this position is:
$94,400 - $198,200
CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.

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