Sr. Cross-Platform Mobile Developer I (6800)
$170k - $216kMetroStar Systems
As a Sr. Mobile Developer (Cross-Platform), you’ll design, build, and sustain secure iOS and Android applications with the goal of delivering mission-critical mobile capabilities across the federal government. Our engineering team is responsible for building and operating high-security mobile solutions for a highly visible government customer, and you’ll play a key role in delivering reliable, secure, and scalable applications by contributing immediately within an Agile delivery model, collaborating closely with security and backend teams, and driving disciplined execution in a classified environment.We know that you can’t have great technology services without amazing people. At MetroStar, we are obsessed withour people and have led a two-decade legacy of building the best and brightest teams. Because we know our future relies on our deep understanding and relentless focus on our people, we live by our mission: A passion for our people. Value for our customers.What you’ll do:Design, develop, test, integrate, optimize, and debug secure web applications and backend services in Java, Python, JavaScript/TypeScript, or similar languages, including UIs built with HTML, CSS, and modern web frameworks.Develop backend services and application logic integrating REST APIs, SQL databases, and enterprise systems, using PostgreSQL, Microsoft SQL Server, or comparable platforms.Develop, refactor, and maintain automation scripts (PowerShell, Python, Bash, or similar) and work in Linux environments to support troubleshooting, command-line diagnostics, scripting, and deployment tasks.Build dashboards, monitoring views, telemetry applications, and operational tools that improve visibility for support teams and mission stakeholders, including simplified interfaces, automated workflows, and guardrails enabling Tier 1/operational personnel to handle repeatable tasks with less engineering escalation.Apply secure coding practices across web, backend, database, scripting, API, mobile, and integration work, and troubleshoot complex application, integration, automation, data, Linux, and API issues in a secure enterprise environment.Document code, architecture, API integrations, database dependencies, SOPs, and support procedures for post-delivery maintainability.Support mobile and UC-adjacent deliverables as needed, including cross-platform mobile apps, Android/enterprise Android integrations, Cisco UC tooling, VPN diagnostics, SIP/RTP visibility, and packet-loss/network-degradation testing utilities.Coordinate with application development, UC, mobile, endpoint, network, cybersecurity, database, Tier 1 support, and Government stakeholders to ensure solutions are usable, supportable, secure, and operationally aligned.What you’ll need to succeed:Active Top Secret security clearance with SCI eligibility. Bachelor's degree in Computer Science or a related field preferred; relevant experience may substitute. 5+ years of full stack software development experience. Experience developing web applications and backend services. Experience with Java, Python, JavaScript/TypeScript, or similar languages. Experience with HTML, CSS, and modern web frameworks. Experience with PowerShell, Python, Bash, or similar scripting languages. Experience with REST APIs and SQL databases, preferably PostgreSQL or Microsoft SQL Server. Experience developing in Linux environments. Strong troubleshooting, automation, and secure coding skills. Ability to work in secure, mission-critical DoD or federal environments with strong documentation and operational discipline. This position is designated as essential personnel supporting continuity of operations and may require work during government shutdowns, emergencies, or other critical situations.SALARY RANGE: $170,000 - $216,000The salary range for this position is determined based on qualifications, skills, and relevant experience. The final salary offered will be determined based on several factors including: The candidate's professional background and relevant work experienceThe specific responsibilities of the role and organizational needsInternal equity and alignment with current team compensationThis role is also eligible for additional compensation, subject to the terms and policies of MetroStar, which may include:Performance-based bonusesCompany-paid training and/or certificationsReferral bonusesApplication Deadline: Applications will be accepted on a rolling basis until the position is filled; candidates are encouraged to apply as early as possible for full consideration.Additional Compensation: This role may also be eligible for bonuses and/or additional incentives based on individual and company performance.Benefits: All full-time employees are eligible to participate in our benefits programs:Health, dental, and vision insurance401(k) retirement plan with company matchPaid time off (PTO) and holidaysParental Leave and dependent careFlexible work arrangementsProfessional development opportunitiesEmployee assistance and wellness programsLike we said, we are big fans of our people. That’s why we offer a generous benefits package, professional growth, and valuable time to recharge. Learn more about our company culture code and benefits. Plus, check out our accolades.Commitment to Non-DiscriminationAll qualified applicants will receive consideration for employment based on merit and without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, status as a protected veteran, or any other status protected by applicable federal, state, local, or international law.What we want you to know:In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.Not ready to apply now? Sign up to join our newsletter here.
- ...your expertise to protect our country from threats. Job Description Job Description: We are seeking a skilled Cross-Platform Mobile Developer to build applications that function seamlessly across multiple platforms. The ideal candidate will leverage their...SuggestedFull time
$101.15k - $192k
...solutions, is seeking a driven and innovative Platform Engineer to help build and extend... ...You’ll be an initial member of a small, cross-functional team maintaining this product... ...activities such as system design consulting, developing software platforms and frameworks,...SeniorContract workFor contractorsWork at office$143.7k - $194.4k
...engineer to design and build customer facing cross-domain cloud services. The AWS Cross... ...solve complex problems.- Improve the developer experience for customers building solutions... ...comprehensive and broadly adopted cloud platform. We pioneered cloud computing and never...SuggestedFull timeInternshipWork at officeFlexible hours- ...of retail innovation, and the AI Agentic Platform team is building the shared foundation... ...engineers, and be a key technical voice in cross-functional discussions. This is a... ...to or built shared AI infrastructure or developer platforms within an AI-focused product organization...SeniorTemporary work
- ...a critical role on the DOMEX Technology Platform (DTP) Program where we support our client... ...intelligence (Al), machine learning (ML) and cross-domain transfer systems to provide... ...detection and resilient deployments.Design, develop, and support scalable, redundant infrastructure...SeniorRemote workFlexible hours
$184.5k
...Within this organization, the Workday Platform Engineering team enables scalable, secure... ...In this role, you will: ~ Lead, develop, and grow a team of 10 - 12 Workday engineers... ...skills. ~ Experience delivering complex, cross-functional initiatives in Agile environments...Senior$153k - $185k
...operate one of the largest IoT platforms in the industry -- powering... ...services Collaborate across mobile, backend, embedded, and data... ...distributed environment Develop event-driven systems and... ...design through production Cross-domain complexity – IoT + cloud...SeniorTemporary workFlexible hours- ...The Microsoft Power Platform Developer supports both the Enterprise Intelligence and Data Solutions (EIDS) and Defense Healthcare Management... ...Power Apps, Power Automate, and Power BI where appropriate Cross-Program Support Support Power Platform needs across both EIDS...SeniorFull time
- ...Job Description Job Description Platform Engineer (VMware & AWS) Washington, DC – 100% Onsite Per Federal contract U.S. citizenship... ...using Terraform and GitLab CI/CD pipelines • Collaborate with cross-functional teams in an agile environment using Jira for project...SeniorContract workLocal area
$98.8k - $164.6k
...This Role MattersThe Washington Post is seeking an experienced Mobile Software Engineer to drive the technical evolution of our... ...mobile architecture, application performance, modularity, and cross-cutting platform systems. Our native apps drive the majority of our digital...Full timeContract workPart time$128k - $151k
The Sr. Cloud Engineer (Azure) I will be responsible for designing, deploying, and optimizing... ...ideal candidate will work closely with cross-functional teams to ensure cloud systems... ...standards.CI/CD Pipeline Management: Develop and manage CI/CD pipelines using GitLab, Jenkins...SeniorFull timeLocal area$168.1k - $227.4k
...across AWS's global infrastructure. We are looking for a proven Sr. Software Development Engineer who thrives in a fast-paced, high-... ...coding, operational excellence, and troubleshooting.7. Collaborate cross-functionally with demand planning, supply chain operations, and...SeniorInternshipWorldwideFlexible hours$144k - $195k
...Manager.Position SummaryAs a Sr Cloud Engineer/ Architect at ACS... ...1. Proficiency in AWS Cloud Platforms: expertise in major cloud platforms... ...Cloud services and products. Develop and manage infrastructure... ...lifecycle.· Collaborate with cross-functional teams in an Agile setting...SeniorFull timeTemporary workWork at officeWorldwideFlexible hours$131.3k - $237.35k
...DescriptionLeidos has an exciting opportunity for a Sr. Software Engineer! *Must have an active... ...-driven Development (BDD) pattern, developers are responsible for implementing robust... ...process and will promote code reuse and cross-program collaboration while reducing...SeniorFull time$168.1k - $227.4k
AWS Commerce Platform provides the infrastructure and services that help AWS customers understand and manage their infrastructure costs... ...mentorship and other career-advancing resources here to help you develop into a better-rounded professional. Work/Life BalanceWe value...SeniorInternshipFlexible hours$141.8k - $173.3k
...how we build systems, mentor developers, and influence engineering standards... ...technical health across our platforms. Through your contributions,... ...owners, analysts, and cross‑functional technical partners... ...development preferred.Experience with mobile technologies, including...SeniorFull timeWork experience placementRemote work$140k - $220k
...team, you'll design and build the systems that connect ZoomInfo's platform to the ecosystem of CRM, MAP, and external eco-systems that our... ...development, working independently while coordinating with cross-functional teamsCollaborate with product and platform teams to...SeniorWork from homeWorldwideMonday to Friday$184.5k
...Our customer-first mindset focuses on developing products that encourage loyalty and repeat... ...in practice every day. As a Senior Mobile Engineer working in Flutter, you will... ...Design, build, and maintain Layla’s cross-platform mobile experience in Flutter (Dart), delivering...Senior$140k - $170k
...Senior hands-on mobile engineer responsible for designing, developing, and maintaining enterprise mobile applications supporting real-time communication, offline... ...with APIs, cloud services, and enterprise platforms. Support peer-to-peer and device-to-device communication...SeniorFull timeContract work- ...Nalley Consulting is seeking full-time Application Developer in metro Washington, D.C. Position: Application Developer LCAT: Senior... ...C lassification rollup and NTK handling programmatically. Cross-domain transfer processes (high to low). Reviewing server...SeniorFull timeTemporary workFlexible hours
$168.1k - $227.4k
...available only through dedicated agencies. Our team is developing an agent platform that coordinates multiple specialized AI sub-agents to execute... ...gates - Establish and drive technical partnerships with cross-functional teams (product science partner engineering) to...SeniorFull timeInternshipFlexible hoursDay shift- ...LinkedIn, X, Instagram, and YouTube. Job Description: As a Staff Cross Domain Systems Engineer, you will lead the design, integration,... ...remediation, and continuous monitoring activities. Develop and review technical documentation, including system designs, interface...Full timeTemporary workPart timeWork experience placementWork at officeWorldwide
$135.2k - $306.4k
...-scale standards. We work closely with cross-functional teams to deliver scalable, maintainable... ...connect exceptional professionals to this Sr. Principal Software Development Engineer... ...Oracle Cloud Infrastructure (OCI) Core Platform division. You will help shape OCIs Key...SeniorFull timeFlexible hours- ...Key Responsibilities: Design, develop, and maintain mobile applications for Android and or iOS Build and integrate RESTful APIs and third-party services Ensure application performance, quality, and responsiveness Collaborate with backend developers, designers...Full time
- ...Description Description: We are seeking a hands-on Senior DevOps/Platform Engineer to own the full delivery lifecycle of a multi-tenant... ...for Docker image builds, Terraform plan/apply gates, and cross-repo deploys Troubleshoot and remediate issues across a highly...SeniorFull time
- ...Description Job Description Senior Salesforce Health Cloud Developer (Remote) Must live in one of the following states: AZ, AK , AR... ...Health Cloud Administrators, business stakeholders, and cross-functional technical teams to deliver scalable, secure, and high...SeniorInterim roleLive inRemote work
- IRS CAS (Sr. Full Stack Developer/Platform Engineer)Job Overview:Customer: Internal Revenue Services (IRS) Location: Remote, with occasional onsite support for meetings, deployments, production activities, or knowledge transfer as required.Clearance: No clearance required...SeniorContract workFor contractorsFor subcontractorRemote workWorldwideRelocation package
$121k - $206k
...that matter to you. Role SummaryDesign, develop, and deploy autonomous AI systems as part... ...Investments Technology team. Collaborate in cross-functional squads across Investments,... ...debt and drive ongoing improvements in AI platforms and infrastructure.Proactively seek opportunities...SeniorFull timeLocal areaRemote work3 days per week$131k - $164k
...global organisation to do its best work. As Senior Manager, Platform Engineering, you’ll lead the team responsible for... ...general controls and audit requirements.A track record of developing engineers, influencing cross-functional partners and communicating technical...SeniorWork at officeLocal areaWorldwideVisa sponsorshipFlexible hours$220k - $350k
...we are not. Today SpaceX is actively developing the technologies to make this possible... ...goal of enabling human life on Mars.SR. AI ENGINEER, PLATFORM INFRASTRUCTURE, SPECIAL PROGRAMSAs an... ...profile selection.Build and maintain the cross-profile CI matrix.Build the testing...SeniorPermanent employmentTemporary workImmediate startWeekend work
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Sr. Cross-Platform Mobile Developer I (6800). Be the first to apply!
- platform engineer Washington DC
- senior platform engineer Washington DC
- client platform engineer Washington DC
- platform developer Washington DC
- data platform engineer Washington DC
- platform engineering manager Washington DC
- mobile app developer Washington DC
- mobile application engineer Washington DC
- android mobile app developer Washington DC
- senior business development Washington DC




