Senior Integration Engineer

Position Title: _Senior Integration/API Software Engineer
Location: Remote (In the U.S)
Other Considerations: U.S. Citizen or Permanent Resident (Required)
Position is contingent on contract award.
Position Summary
Sprezzatura is seeking an experienced Integration / API Software Engineer to support the implementation of a modernized financial and budget application for a federal client.
This hands-on technical role will design, develop, test, and support APIs and system integrations connecting modernized capabilities with existing enterprise and legacy applications. You will work closely with platform, data, functional, and testing teams to enable secure, reliable exchange of financial, acquisition, planning, and related enterprise data.
The ideal candidate combines strong software/API development skills with knowledge of Federal or VA enterprise systems, legacy applications, data structures, and integration patterns. Prior OneStream experience is not required as you will partner with OneStream technical resources responsible for the platform-side implementation.
Responsibilities
Design, develop, test, deploy, and maintain RESTful APIs and system integrations connecting legacy and modern enterprise applications
Analyze existing system interfaces, data structures, business rules, and dependencies to support modernization and integration activities
Develop and maintain API contracts, interface specifications, data mappings, transformations, and related technical documentation
Develop secure, reusable integration components using appropriate programming languages, frameworks, and enterprise integration patterns
Implement authentication and authorization, input/schema validation, error handling, logging, retries, exception handling, and other controls necessary for reliable integrations
Develop data transformation and mapping logic to support information exchange between systems with differing data models and structures
Work with OneStream developers and data integration resources to define how external data will be exchanged with and consumed by the platform
Support data validation, reconciliation, control totals, duplicate detection, and exception processing to ensure interface accuracy and completeness
Develop and execute automated API and integration tests and support end-to-end and regression testing
Troubleshoot interface, API, data, connectivity, and performance issues across integrated systems and support root-cause analysis and resolution
Participate in code reviews, configuration/version control, CI/CD processes, release activities, and production support
Collaborate with architects, developers, BAs, data engineers, security resources, and testers throughout the integration lifecycle
Qualifications
8+ years of software development or systems integration experience, including significant hands-on API or backend development
Demonstrated experience designing, developing, and supporting RESTful APIs and enterprise system integrations
Proficiency with Java, C#/.NET, Python, or comparable backend development technologies
Experience working with JSON, XML, REST, HTTP/HTTPS, and API specifications such as OpenAPI/Swagger
Experience with API authentication and authorization approaches such as OAuth 2.0, tokens, certificates, or similar enterprise security mechanisms
Experience with relational databases, SQL, data mapping, transformation, validation, and reconciliation
Experience implementing robust integration controls including logging, error handling, retries, exception management, and monitoring
Experience with source/version control such as Git and modern software development practices
Experience developing or executing automated API/integration tests using tools or frameworks such as Postman/Newman or comparable technologies
Experience troubleshooting complex interfaces and data exchanges across multiple enterprise systems
Strong analytical, problem-solving, communication, and collaboration skills
Ability to meet applicable Federal background investigation/security requirements
Preferred Qualifications
Experience developing or supporting VA enterprise or legacy applications and interfaces.
Knowledge of VA financial, acquisition, planning, project-management, or IT management systems and associated data
Experience integrating legacy applications with modern SaaS, cloud, ERP/EPM, or workflow platforms
Experience with enterprise integration patterns including synchronous/asynchronous interfaces, event-driven processing, scheduled/batch exchanges, and message-based integration
Familiarity with DevSecOps, CI/CD, automated quality gates, and secure software development practices
Experience with Federal security, data protection, auditability, and technical standards
OneStream or comparable configurable enterprise platform integration experience is beneficial but not required
WORKING CONDITIONS
Standard Business hours are Monday through Friday. Occasional extended or weekend hours may be required based on operational needs. Must have reliable internet service that allows for effective telecommuting on remote days.
PAY RANGE
The base salary range for this position is $130,000 to $140,000 annually, depending on geographic work location, relevant experience, skills, education, internal equity, security clearance, and contract requirements. Geographic salary ranges are determined in accordance with the company's compensation practices and represent a good-faith estimate of the compensation for this position at the time of posting.
Benefits
Sprezzatura offers a comprehensive and flexible benefit package to include:
Medical, Dental, and Vision
Health Saving Account (when enrolled in eligible plan) with Company contribution
Company paid Life, Accidental Death, Short-term & Long-term Disability
Voluntary Accident, Hospital Indemnity, & Critical Care Insurance
Voluntary Medical & Dependent Care Flexible Spending Accounts
Accrued Paid Time Off & Company Paid Holidays
401(k) Retirement Plan with Company match
WORK AUTHORIZATION
Sprezzatura participates in E-Verify and will provide the federal government with your I-9 information to confirm that you are authorized to work in the U.S.
Sprezzatura is a mission-driven, Service-Disabled Veteran-Owned Small Business (SDVOSB) that thrives at the intersection of technology, innovation, and impact. We specialize in secure, scalable, and human-centered digital solutions that accelerate government transformation. Our work spans DevSecOps, health IT modernization, intelligent automation, benefits delivery, and digital communications. We partner with agencies ready to evolve—delivering not just strategy, but measurable execution. Rooted in operational excellence and driven by curiosity, we help our clients navigate complexity with clarity, turning ambitious ideas into real-world outcomes. No buzzwords. Just impact.
EEO STATEMENT
Sprezzatura is an Equal Opportunity Employer. We do not discriminate on the basis of race, color, religion, sex (including pregnancy, sexual orientation, and gender identity), national origin, age, disability, genetic information, protected veteran status, or any other legally protected characteristic. Applicants have the right to discuss, disclose, or inquire about compensation without retaliation. Reasonable accommodations are available for qualified individuals with disabilities.
This job description is not intended to be an employment contract and does not guarantee employment for any specific duration.

Work arrangement
Yes