{"schemaVersion":"jobsearcher.job.v1","id":"fb6af1dd1e0d8c5dd1c50189","url":"https://jobsearcher.com/jobs/fb6af1dd1e0d8c5dd1c50189","canonicalUrl":"https://jobsearcher.com/jobs/fb6af1dd1e0d8c5dd1c50189","title":"Fullstack Integration Engineer","description":"Senior Full-Stack Integration EngineerLocation: Remote – United StatesExperience: 5+ years of professional software engineering experienceWe are seeking a Senior Full-Stack Integration Engineer to design, build, and support cloud-based applications, APIs, and external partner integrations. This position is best suited for a backend-leaning full-stack engineer with strong experience in Node.js, TypeScript, React, AWS, and production database environments.The ideal candidate will have hands-on experience developing partner-facing APIs, integrating third-party systems, and building reliable cloud services used by external customers and business partners.ResponsibilitiesDesign, develop, test, and maintain backend services using Node.js and TypeScriptBuild and enhance frontend application features using React and TypeScriptDesign and develop REST and/or GraphQL APIs for use by external partnersIntegrate applications with third-party platforms, vendors, and partner systemsBuild and operate cloud-based services within AWSDevelop serverless applications using services such as AWS Lambda and API GatewayDesign and maintain production data models using relational or document databasesCollaborate with product, engineering, and external partner teams to define integration requirementsTroubleshoot API, data, and integration issues across distributed systemsParticipate in code reviews, testing, deployment, and ongoing application supportHelp establish scalable development practices for partner integrations and cloud servicesRequired Qualifications5+ years of professional software engineering experienceStrong backend development experience with Node.jsAdvanced TypeScript experience across backend and frontend applicationsProfessional frontend development experience using ReactProduction experience with a relational or document database, preferably PostgreSQL or MongoDBExperience building and operating applications or services within AWSHands-on experience integrating with third-party or external partner systemsExperience designing and developing externally consumed REST and/or GraphQL APIsStrong understanding of API security, authentication, error handling, and data validationAbility to work effectively in a remote, collaborative engineering environmentPreferred QualificationsExperience with NestJSProduction experience with MongoDBExperience developing GraphQL APIsExperience with AWS serverless technologies, including Lambda and API GatewayPrevious government or public-sector delivery experienceExperience supporting applications with multiple external partner integrationsFamiliarity with automated testing, CI/CD pipelines, monitoring, and production supportThis is a remote opportunity available to candidates located within the United States.System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.#M1 Ref: #851-Rockville-S1","company":"System One","rawCompany":"system one","city":"Virginia Beach","state":"VA","isRemote":false,"isActive":false,"createdAt":"2026-07-23T11:59:50.726Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1211.00","title":"Computer Systems Analysts","slug":"computer-systems-analysts"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Fullstack Integration Engineer","description":"Senior Full-Stack Integration EngineerLocation: Remote – United StatesExperience: 5+ years of professional software engineering experienceWe are seeking a Senior Full-Stack Integration Engineer to design, build, and support cloud-based applications, APIs, and external partner integrations. This position is best suited for a backend-leaning full-stack engineer with strong experience in Node.js, TypeScript, React, AWS, and production database environments.The ideal candidate will have hands-on experience developing partner-facing APIs, integrating third-party systems, and building reliable cloud services used by external customers and business partners.ResponsibilitiesDesign, develop, test, and maintain backend services using Node.js and TypeScriptBuild and enhance frontend application features using React and TypeScriptDesign and develop REST and/or GraphQL APIs for use by external partnersIntegrate applications with third-party platforms, vendors, and partner systemsBuild and operate cloud-based services within AWSDevelop serverless applications using services such as AWS Lambda and API GatewayDesign and maintain production data models using relational or document databasesCollaborate with product, engineering, and external partner teams to define integration requirementsTroubleshoot API, data, and integration issues across distributed systemsParticipate in code reviews, testing, deployment, and ongoing application supportHelp establish scalable development practices for partner integrations and cloud servicesRequired Qualifications5+ years of professional software engineering experienceStrong backend development experience with Node.jsAdvanced TypeScript experience across backend and frontend applicationsProfessional frontend development experience using ReactProduction experience with a relational or document database, preferably PostgreSQL or MongoDBExperience building and operating applications or services within AWSHands-on experience integrating with third-party or external partner systemsExperience designing and developing externally consumed REST and/or GraphQL APIsStrong understanding of API security, authentication, error handling, and data validationAbility to work effectively in a remote, collaborative engineering environmentPreferred QualificationsExperience with NestJSProduction experience with MongoDBExperience developing GraphQL APIsExperience with AWS serverless technologies, including Lambda and API GatewayPrevious government or public-sector delivery experienceExperience supporting applications with multiple external partner integrationsFamiliarity with automated testing, CI/CD pipelines, monitoring, and production supportThis is a remote opportunity available to candidates located within the United States.System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.#M1 Ref: #851-Rockville-S1","datePosted":"2026-07-23T11:59:50.726Z","dateModified":"2026-07-23T11:59:50.726Z","hiringOrganization":{"@type":"Organization","name":"System One","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Virginia Beach","addressRegion":"VA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"fb6af1dd1e0d8c5dd1c50189"},"url":"https://jobsearcher.com/jobs/fb6af1dd1e0d8c5dd1c50189"}}