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API Engineer

Apply Job ID 31151 Date posted 07/31/2025

Job Family:

Software Development & Support (Digital)


Travel Required:

Up to 10%


Clearance Required:

None

What You Will Do:

The API Engineer will work closely with clients, solutions architects and technical/functional leads across Guidehouse digital teams and market segments to support client projects and provide solutions for growth efforts and capabilities build out.

  • Serve as a key member of integration team to support technical challenges/demos, building innovative API solution prototypes using modern API architectures and integration technologies.

  • API design and development: Design, build, and maintain scalable and secure APIs using RESTful principles and modern API gateway patterns to facilitate seamless integration between enterprise systems.

  • Work collaboratively with product managers, software developers, security specialists, platform engineers, solution architects, and business stakeholders to design, build,  test, and deploy high-value, operationally resilient API products that satisfy functional and non-functional requirements.

  • Facilitate seamless integration between loan platforms (LoanIQ, AFSVision) and other enterprise systems including customer portals, online banking platforms, risk management systems, and external partner systems using APIs.

  • Create and maintain comprehensive API documentation for internal and external developers, including information on endpoints, request/response formats, authentication, and error handling.

  • Develop and execute unit, integration, and performance tests for APIs to ensure functionality, reliability, and security.


What You Will Need:

  • Bachelor's degree.  Additional Four (4) years of experience will be needed in lieu of degree

  • US Citizen, Green Card Holder, Green Card – EAD

  • 4-6 years of prior relevant experience in API development, configuration, testing, and implementation

  • 3+ years of experience with financial services platforms and loan management systems (LoanIQ, AFSVision preferred)

  • Proven ability to work collaboratively with team members and contribute to solving integration and API challenges.

  • Proven ability to develop API solutions and use technical skills to implement and test API integrations effectively.

  • An understanding of the Agile and Scaled Agile practices and principles. Must be able to work within Agile frameworks and contribute to software development with agility.

Technical Requirements:

  • Strong programming skills in languages commonly used for API development including:

    • Programming Languages: Python, Java, JavaScript/Node.js, C#

    • API Technologies: RESTful API design principles, gRPC

    • API Frameworks: Spring Boot, Express.js, FastAPI, ASP.NET Core

    • Authentication & Authorization: OAuth 2.0, JWT, API keys, SAML, OpenID Connect

    • API Gateway Solutions: AWS API Gateway or  Azure API Management, or Apigee

    • Documentation Tools: Swagger/OpenAPI, Postman, Insomnia, API Blueprint

    • Testing Tools: Postman, SoapUI, JMeter, REST Assured, Newman

    • Message Formats: JSON, XML, Avro, Protocol Buffers

  • Experience with RESTful API design principles and best practices, including proper HTTP status codes, versioning strategies, and error handling patterns.

  • Familiarity with API lifecycle management, including design, development, testing, deployment, monitoring, and deprecation strategies.

  • Proficiency delivering API solutions using contemporary CI/CD pipeline tooling and ability to continuously collaborate with development, operations, and security (DevSecOps) team members to deliver secure and operationally resilient API products.

  • This is a hands-on API engineering position and requires the ability to build and deploy API solutions and integration components.

  • Ability to design, build, test, and deploy API products and integration solutions on cloud platforms.

  • Strong communication, collaboration, and problem-solving skills with an ability to handle customer requirements and engineer API solutions.


What Would Be Nice To Have:

  • Certifications such as AWS Certified Developer – Amazon Web Services Or Azure Developer Associate or MuleSoft Certified Developer

  • Additional Technologies such as Event-driven architecture and async messaging (Apache Kafka, RabbitMQ) , Microservices architecture patterns

  • API security testing and vulnerability assessment

  • Solutions architecture support for technical volumes of proposals and white papers for RFPs/RFIs and thought leadership initiatives.


What We Offer:

Guidehouse offers a comprehensive, total rewards package that includes competitive compensation and a flexible benefits package that reflects our commitment to creating a diverse and supportive workplace.

Benefits include:

  • Medical, Rx, Dental & Vision Insurance

  • Personal and Family Sick Time & Company Paid Holidays

  • Parental Leave

  • 401(k) Retirement Plan

  • Group Term Life and Travel Assistance

  • Voluntary Life and AD&D Insurance

  • Health Savings Account, Health Care & Dependent Care Flexible Spending Accounts

  • Transit and Parking Commuter Benefits

  • Short-Term & Long-Term Disability

  • Tuition Reimbursement, Personal Development, Certifications & Learning Opportunities

  • Employee Referral Program

  • Corporate Sponsored Events & Community Outreach

  • Care.com annual membership

  • Employee Assistance Program

  • Supplemental Benefits via Corestream (Critical Care, Hospital Indemnity, Accident Insurance, Legal Assistance and ID theft protection, etc.)

  • Position may be eligible for a discretionary variable incentive bonus

About Guidehouse

Guidehouse is an Equal Opportunity Employer–Protected Veterans, Individuals with Disabilities or any other basis protected by law, ordinance, or regulation.

Guidehouse will consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of applicable law or ordinance including the Fair Chance Ordinance of Los Angeles and San Francisco.

If you have visited our website for information about employment opportunities, or to apply for a position, and you require an accommodation, please contact Guidehouse Recruiting at 1-571-633-1711 or via email at RecruitingAccommodation@guidehouse.com. All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodation.

All communication regarding recruitment for a Guidehouse position will be sent from Guidehouse email domains including @guidehouse.com or guidehouse@myworkday.com.  Correspondence received by an applicant from any other domain should be considered unauthorized and will not be honored by Guidehouse.  Note that Guidehouse will never charge a fee or require a money transfer at any stage of the recruitment process and does not collect fees from educational institutions for participation in a recruitment event. Never provide your banking information to a third party purporting to need that information to proceed in the hiring process.

If any person or organization demands money related to a job opportunity with Guidehouse, please report the matter to Guidehouse’s Ethics Hotline. If you want to check the validity of correspondence you have received, please contact recruiting@guidehouse.com. Guidehouse is not responsible for losses incurred (monetary or otherwise) from an applicant’s dealings with unauthorized third parties.

Guidehouse does not accept unsolicited resumes through or from search firms or staffing agencies. All unsolicited resumes will be considered the property of Guidehouse and Guidehouse will not be obligated to pay a placement fee.

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