{"schemaVersion":"jobsearcher.job.v1","id":"f950d9f003ccfd3b1d61f0cf","url":"https://jobsearcher.com/jobs/f950d9f003ccfd3b1d61f0cf","canonicalUrl":"https://jobsearcher.com/jobs/f950d9f003ccfd3b1d61f0cf","title":"Backend Software Engineer — Secure Mission Systems","description":"Backend Software Engineer — Secure Mission Systems\n\nLocation: Mainly remote, with onsite work in Laurel, Maryland, typically one day every six weeks for team-wide sprint planning. Exact timing may vary based on project needs.\nClearance: Active final DoD Secret clearance required\n\nThis position supports a pending contract opportunity and is contingent upon contract award, with an anticipated start in November 2026.\n\nBuild Secure Software for a High-Impact Defense Mission\n\nJoin Rackner to build secure backend services that support mission-planning and decision-support capabilities for a Department of Defense customer.\n\nYou will take hands-on ownership of APIs, service integrations, data flows, distributed workflows, and automated testing—not simply complete isolated development tickets. The role offers exposure to secure software delivery, geospatial data, containerized applications, and backend services that support AI-enabled capabilities.\n\nThis is a primarily remote role within the United States. Work will be performed using customer-provided systems, with virtual collaboration across the engineering team and periodic onsite sprint planning in Laurel, Maryland.\n\nWhat You Will Do\n\nDesign, develop, test, and integrate secure backend services and APIs.\nBuild and maintain backend services using Python, FastAPI, and C#.\nDevelop REST APIs and support service-to-service communication using gRPC.\nBuild asynchronous and distributed workflows using RabbitMQ and Celery.\nDevelop and integrate relational and geospatial data capabilities using PostgreSQL and PostGIS.\nContainerize and deploy backend services in OpenShift-based environments.\nWork within GitLab-based development and CI/CD workflows.\nApply secure software-development lifecycle practices throughout design, implementation, testing, and remediation.\nDevelop unit, integration, and system-level tests that support software quality and delivery confidence.\nInvestigate defects, failed integrations, security findings, and service issues.\nParticipate in code reviews, technical reviews, vulnerability-remediation efforts, and solution-design discussions.\nProduce software designs, sequence diagrams, workflow descriptions, and technical documentation.\nCollaborate with frontend, AI/ML, security, platform, DevSecOps, and customer engineering teams.\n\nWhat You Bring\n\nBachelor's degree in Computer Science or a related field.\nAt least four years of professional software-development experience.\nHands-on experience designing and developing backend services, APIs, or distributed applications.\nDeveloping backend software using Python and C#.\nBuilding APIs and services with FastAPI.\nExperience with RabbitMQ, gRPC, and Celery.\nWorking with PostgreSQL and PostGIS.\nUsing GitLab-based development workflows.\nDeveloping or deploying software in OpenShift environments.\nUnderstanding of secure software-development lifecycle practices.\nWriting automated unit and integration tests.\nAbility to clearly explain the systems you personally built, the technical decisions you made, and how your work was tested and delivered.\nClear technical documentation and communication skills.\n\nExperience That Will Help You Stand Out\n\nFastAPI or another Python web framework.\nRabbitMQ, Celery, gRPC, or similar messaging and service-integration tools.\nPostgreSQL, PostGIS, geospatial data, or mapping applications.\nOpenShift, Kubernetes, GitLab CI/CD, or secure container delivery.\nDefense, mission-planning, decision-support, or other regulated software environments.\nIntegration of backend services with LLM, retrieval-augmented generation, or other AI-enabled components.\n\nYou do not need to be the deepest expert in every technology listed. Strong backend fundamentals, credible hands-on experience, and the ability to learn within a secure delivery environment matter most.\n\nWhy Rackner\n\nAt Rackner, you will build technology that supports critical defense and public-sector missions.\n\nThis role offers broader ownership across backend engineering, secure delivery, distributed services, automated testing, and collaboration with software, AI/ML, cloud, and cybersecurity teams.\n\nRackner has delivered more than $30 million in recent federal awards. We are looking for an engineer who can help turn complex mission needs into secure, dependable software.\n\nBenefits & Professional Growth\n\nCompetitive compensation\nCompany-supported certifications\n401(k) with 100% company match up to 6%\nMedical, dental, vision, life, and disability coverage\nPaid time off and company holidays\nRemote-work support and home-office equipment plan\nFitness and wellness reimbursement\nWeekly pay schedule\nProfessional-development and growth opportunities\n\nApply\n\nIf you want to build secure backend services that directly support an important defense mission, we would like to hear from you.","company":"Rackner","rawCompany":"rackner","city":"Laurel","state":"MD","isRemote":false,"isActive":false,"createdAt":"2026-08-19T18:07:47.637Z","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":"15-1251.00","title":"Computer Programmers","slug":"computer-programmers"}],"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":"Backend Software Engineer — Secure Mission Systems","description":"Backend Software Engineer — Secure Mission Systems\n\nLocation: Mainly remote, with onsite work in Laurel, Maryland, typically one day every six weeks for team-wide sprint planning. Exact timing may vary based on project needs.\nClearance: Active final DoD Secret clearance required\n\nThis position supports a pending contract opportunity and is contingent upon contract award, with an anticipated start in November 2026.\n\nBuild Secure Software for a High-Impact Defense Mission\n\nJoin Rackner to build secure backend services that support mission-planning and decision-support capabilities for a Department of Defense customer.\n\nYou will take hands-on ownership of APIs, service integrations, data flows, distributed workflows, and automated testing—not simply complete isolated development tickets. The role offers exposure to secure software delivery, geospatial data, containerized applications, and backend services that support AI-enabled capabilities.\n\nThis is a primarily remote role within the United States. Work will be performed using customer-provided systems, with virtual collaboration across the engineering team and periodic onsite sprint planning in Laurel, Maryland.\n\nWhat You Will Do\n\nDesign, develop, test, and integrate secure backend services and APIs.\nBuild and maintain backend services using Python, FastAPI, and C#.\nDevelop REST APIs and support service-to-service communication using gRPC.\nBuild asynchronous and distributed workflows using RabbitMQ and Celery.\nDevelop and integrate relational and geospatial data capabilities using PostgreSQL and PostGIS.\nContainerize and deploy backend services in OpenShift-based environments.\nWork within GitLab-based development and CI/CD workflows.\nApply secure software-development lifecycle practices throughout design, implementation, testing, and remediation.\nDevelop unit, integration, and system-level tests that support software quality and delivery confidence.\nInvestigate defects, failed integrations, security findings, and service issues.\nParticipate in code reviews, technical reviews, vulnerability-remediation efforts, and solution-design discussions.\nProduce software designs, sequence diagrams, workflow descriptions, and technical documentation.\nCollaborate with frontend, AI/ML, security, platform, DevSecOps, and customer engineering teams.\n\nWhat You Bring\n\nBachelor's degree in Computer Science or a related field.\nAt least four years of professional software-development experience.\nHands-on experience designing and developing backend services, APIs, or distributed applications.\nDeveloping backend software using Python and C#.\nBuilding APIs and services with FastAPI.\nExperience with RabbitMQ, gRPC, and Celery.\nWorking with PostgreSQL and PostGIS.\nUsing GitLab-based development workflows.\nDeveloping or deploying software in OpenShift environments.\nUnderstanding of secure software-development lifecycle practices.\nWriting automated unit and integration tests.\nAbility to clearly explain the systems you personally built, the technical decisions you made, and how your work was tested and delivered.\nClear technical documentation and communication skills.\n\nExperience That Will Help You Stand Out\n\nFastAPI or another Python web framework.\nRabbitMQ, Celery, gRPC, or similar messaging and service-integration tools.\nPostgreSQL, PostGIS, geospatial data, or mapping applications.\nOpenShift, Kubernetes, GitLab CI/CD, or secure container delivery.\nDefense, mission-planning, decision-support, or other regulated software environments.\nIntegration of backend services with LLM, retrieval-augmented generation, or other AI-enabled components.\n\nYou do not need to be the deepest expert in every technology listed. Strong backend fundamentals, credible hands-on experience, and the ability to learn within a secure delivery environment matter most.\n\nWhy Rackner\n\nAt Rackner, you will build technology that supports critical defense and public-sector missions.\n\nThis role offers broader ownership across backend engineering, secure delivery, distributed services, automated testing, and collaboration with software, AI/ML, cloud, and cybersecurity teams.\n\nRackner has delivered more than $30 million in recent federal awards. We are looking for an engineer who can help turn complex mission needs into secure, dependable software.\n\nBenefits & Professional Growth\n\nCompetitive compensation\nCompany-supported certifications\n401(k) with 100% company match up to 6%\nMedical, dental, vision, life, and disability coverage\nPaid time off and company holidays\nRemote-work support and home-office equipment plan\nFitness and wellness reimbursement\nWeekly pay schedule\nProfessional-development and growth opportunities\n\nApply\n\nIf you want to build secure backend services that directly support an important defense mission, we would like to hear from you.","datePosted":"2026-08-19T18:07:47.637Z","dateModified":"2026-08-19T18:07:47.637Z","hiringOrganization":{"@type":"Organization","name":"Rackner","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Laurel","addressRegion":"MD","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"f950d9f003ccfd3b1d61f0cf"},"url":"https://jobsearcher.com/jobs/f950d9f003ccfd3b1d61f0cf"}}