Senor Integration DeveloperClient: Government / Enterprise ClientLocation: RemoteSalary: $120,000–$140,000 annually, based on experience and technical interviewEmployment Type: Full-TimeCitizenship: U.S. Citizen RequiredKeywords: Senior Integration Developer, Sr. Integration Developer, Senior Integration Engineer, Integration Engineer, API Developer, Backend Developer, Systems Integration, Integration Architecture, Azure, AWS, GCP, Python, Java, JavaScript, TypeScript, REST API, SOAP, GraphQL, OAuth2, JWT, SAML, API Security, MuleSoft, Apigee, Kong, Workato, BizTalk, Event-Driven Architecture, Message Queues, Pub/Sub, iPaaS, ESB, CI/CD, Cloud Integration, Data Transformation, API Management Position OverviewFathom Management is seeking an experienced Sr. Integration Developer to design, develop, and support scalable enterprise integrations across applications, APIs, data platforms, and cloud environments.The successful candidate will combine strong backend development, API integration, and architecture skills with the ability to establish integration standards, design patterns, and technical best practices. This position will work across the full integration lifecycle-from solution design and development through testing, deployment, monitoring, and production support.This is an excellent opportunity for a Senior Integration Developer, Senior Integration Engineer, API Developer, or Backend Developer who enjoys solving complex integration challenges, designing scalable solutions, and providing technical direction to development teams. Candidate Verification NoticeFor your protection and ours, Fathom Management conducts a brief candidate verification at the beginning of the screening process. Because we support State and Federal Government clients, this verification helps protect your identity, résumé, and application from unauthorized use and confirms that we are speaking directly with the individual who applied for the position.You may be asked to provide a photo of a government-issued identification document as part of this verification. Video verification may also be required.Identification is used solely for candidate verification and will be handled in accordance with Fathom Management's privacy and security practices. Current Technical Architecture & Development ExperienceCandidates should demonstrate recent, hands-on experience with several of the following:Designing end-to-end integration solutions spanning backend services, APIs, integration layers, and cloud infrastructureBackend services and API development using Python, Java, JavaScript, and/or TypeScriptAzure, AWS, or GCP cloud environments and cloud-native deployment practicesRESTful APIs and other API technologies, including SOAP and/or GraphQLEnterprise integration platforms such as MuleSoft, Apigee, Kong, Workato, BizTalk, or comparable technologiesIntegration patterns including event-driven, pub/sub, hub-and-spoke, point-to-point, ESB, and iPaaSAPI security including OAuth2, JWT, SAML, and API keysMessage queues, asynchronous processing, and event streamingData mapping, transformation, orchestration, and exchange across heterogeneous systemsCI/CD pipelines and multi-environment deploymentsArchitecture diagrams, technical specifications, data mappings, configuration documentation, and technical standards Required Qualifications5+ years of hands-on software development experience using one or more modern programming languages such as Java, Python, JavaScript, or TypeScript.Strong understanding of enterprise integration patterns and architectural styles.Hands-on experience designing and developing APIs and system integrations.Experience with RESTful services, SOAP, and/or GraphQL.Working knowledge of API security, authentication, authorization, versioning, throttling/rate limiting, and error handling.Experience with at least one major cloud platform: Azure, AWS, or GCP, including cloud-native architecture and deployment practices.Solid understanding of data mapping, transformation, orchestration, and integration across disparate systems.Experience across the software development lifecycle (SDLC), including development, testing, CI/CD, and deployment.Experience supporting deployments across multiple environments, such as Development, Test, UAT, and Production.Ability to establish or apply integration standards, design patterns, and development best practices.Strong troubleshooting, analytical, and problem-solving skills.Excellent communication and ability to collaborate with technical and cross-functional teams.Preferred QualificationsBachelor's degree or equivalent experience in Computer Science, Engineering, Information Technology, or a related discipline.Experience with one or more enterprise integration platforms, including:MuleSoftApigeeKongWorkatoBizTalkExperience with Azure integration services and cloud-native architecture.Experience with message queues, event streaming, or pub/sub technologies.Experience supporting enterprise API management.Experience with automated testing and CI/CD practices.Experience supporting production integration environments.Experience providing technical guidance, mentoring, or design direction to development teams. Key ResponsibilitiesDesign and develop end-to-end integration solutions spanning backend services, APIs, integration layers, and cloud infrastructure.Translate business and technical requirements into scalable, secure, and maintainable integration solutions.Build scalable backend services and APIs using modern programming languages and/or enterprise integration platforms.Design and implement secure RESTful and enterprise APIs connecting internal and third-party systems.Apply appropriate integration patterns, including event-driven, asynchronous, pub/sub, ESB, and iPaaS architectures.Implement API security, authentication, authorization, versioning, throttling, and error-handling standards.Develop data mapping, transformation, and orchestration solutions across heterogeneous systems.Build, test, and deploy integration processes throughout the Dev, Test, UAT, and Production lifecycle.Support CI/CD pipelines and automated deployment processes.Monitor integration performance, troubleshoot issues, and provide expert-level post-deployment production support.Create and maintain architecture diagrams, technical specifications, data mappings, configuration documentation, and other technical artifacts.Define and promote integration design patterns, technical standards, and development best practices.Collaborate with developers, architects, business stakeholders, and other technical teams to optimize data flows and integration solutions.Provide technical guidance and support to development teams as needed. What Makes Someone SuccessfulThe successful candidate will be:Hands-on and technically capableStrong in API and systems integrationComfortable designing solutions across cloud and enterprise environmentsExperienced troubleshooting complex production integrationsSecurity-minded when designing APIs and data exchangesStrong in architecture, technical design, and problem-solvingAble to establish and communicate technical standards and best practicesComfortable working with both modern development technologies and established enterprise integration platformsCollaborative and able to communicate effectively with technical and business stakeholdersComfortable managing multiple priorities and deadlines Benefits OverviewFathom Management offers full-time employees a comprehensive and competitive benefits package, including:Paid vacation, sick leave, and holidaysMedical, dental, and vision insuranceLife insuranceShort- and long-term disability401(k) retirement planMilitary leaveProfessional training and developmentTuition reimbursementEmployee wellness programCommuter benefitsAnd moreEqual Employment OpportunityFathom Management is an Equal Opportunity Employer committed to fostering a diverse and inclusive workplace. All employment decisions are made without regard to race, color, religion, creed, national origin, sex, age, marital status, sexual orientation, gender identity, citizenship status, veteran status, disability, or any other characteristic protected by applicable federal, state, or local law.