Senior Software Engineer
Exostar
We're looking for a senior builder — a high-output engineer who ships production systems at a pace that resets expectations and raises the bar for everyone around them. Not an architect who whiteboard-only. Not a reviewer who lives in PRs. A hands-on engineer whose default mode is writing, deploying, and owning code — and whose experience means fewer wrong turns and faster recovery when things get hard.You'll take on the work that demands senior judgment: platform migrations with no clean path, production-ready prototypes that become the foundation others build on, architectural rebuilds that have to stay live through the transition, and cross-system integrations that touch everything and are owned by no one. You scope it, you build it, you ship it — and you leave it better documented and more maintainable than you found it.We operate in a FedRAMP Moderate / CMMC L2 environment serving major defense primes. Compliance is a constraint you've internalized — not a blocker you escalate.Responsibilities: Your day if you join us: What You'll Build:Build (70%+)Write production code daily across Java, Spring boot, Angular/TypeScript, Python, or whatever the problem requires.Use AI coding tools—Claude Code, Copilot, agentic workflows—as your native development environment and actively raise the bar for how the team uses them.Own systems end-to-end: architecture → implementation → testing → deployment → You deeply understand the constraints of FedRAMP and CMMC and you design around them without slowing down.Build on Azure Gov and Commercial using microservices, event-driven patterns, APIs, and data pipelines — and make deliberate architectural decisions that others can build on.Drive delivery of complex, high-impact projects: migrations, prototypes, legacy replacements, and cross-system integrations that require senior judgment to scope and execute.Lead IaC (Terraform, Bicep), CI/CD automation, and internal tooling that accelerates the whole engineering organization.Raise the Bar (20%)Your code and architecture decisions become the reference standard for engineering quality across the team.Lead code reviews with depth and speed; mentor through pairing, not lectures.Champion AI-augmented development across the team — prompting strategies, workflow patterns, context management, and tool selection.Author practical, durable documentation (READMEs, ADRs, runbooks) that outlasts any single sprint.Identify and close skill gaps on the team through example, not just feedback.Provide authoritative signal on platform gaps, tooling choices, and systemic engineering friction — and propose solutions, not just observations.Evaluate new technology by building with it in real environments with real data, then synthesize findings for the broader team.Own the identification and prioritization of technical debt that materially slows delivery or increases risk.Partner with product and engineering leadership to influence roadmap tradeoffs from a grounded technical perspectiveQualifications: You are a great fit for this role if you:MustHavesYou are a Builder8–10 years of recent, hands-on software engineering with a track record of shipping full systems, not just features.A Bachelor’s degree in Computer Science, Engineering, Information Systems, or a related technical field.Deep proficiency in at least two: Java, Spring boot, Angular/TypeScript, Python, — with the ability to move across stacks as needed.Extensive experience designing and building cloud-native systems (Azure preferred; Azure Gov a plus).Comfortable owning the full stack — infra → backend → frontend — and making the right tradeoffs at each layer.AI-Native WorkflowDaily user of Claude Code, Copilot, Cursor, Windsurf, or equivalent — this is how you work, not a novelty.Strong, earned mental model of where AI accelerates development and where human judgment is irreplaceable.Demonstrated examples of shipping faster and better with AI assistance and sharing those techniques with others.Judgment & Engineering MaturityThrives in ambiguity; makes reasonable assumptions, communicates them clearly, and ships.Strong but flexible architectural opinions — you can defend your reasoning and update it when presented with better information.Clear, precise written communication; you write to inform decisions, not to document effort.Due to customer requirements, U.S. Citizenship is required. Ability to gain and maintain Trusted Role is required.Preferred Qualifications:You are exactly who we are looking for if you:Have hands-on experience with Azure Government (IL2/IL4/IL5), Entra ID, PIM, managed identities, and Zero Trust architecture.Proven experience building in regulated environments (FedRAMP, CMMC, ITAR, SOC2, HIPAA).Bring a background in IAM, credentialing, PKI, or federated identity.Have built dev tools, internal platforms, or shared infrastructure used by other engineering teams.Have worked in Aerospace & Defense, Life Sciences, or other regulated SaaS environments.Have meaningful agentic AI development experience (MCP, multi-tool workflows, AI-driven testing) and can speak to what worked and what didn't.Have a prototype or side project that demonstrates what senior-level AI-augmented development looks like in practice.Location: Hybrid(3x/week)- Herndon, VA, The pay range for this position is $130,000k - 165,000k/yr; however, the final compensation will be determined based on factors including experience, skills, qualifications, and location. Exostar also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance, EAP, Flexible Spending Accounts, 401(k) matching, flexible time off and sick leave).Why ExostarAI-native engineering: Claude & Copilot integrated across the org with leadership backing.Builder autonomy: Minimal process, maximum ownership.Mission impact: Secure collaboration infrastructure for the Defense Industrial Base.Real technical constraints: FedRAMP Moderate, CMMC 110/110, Azure Gov multi-tenant SaaS.About ExostarExostar - The Company:Exostar’s cloud-based platforms create exclusive communities within the Aerospace and Defense, Life Sciences, and other highly regulated industries where members securely collaborate, share information, and operate compliantly. Within these communities we build trust. By analyzing community data, we provide insights and intelligence, enabling organizations to make better, timelier decisions, to mitigate risk, and operate more efficiently.We believe in employee development: we promote internally and provide training and educational assistanceWe provide a fun, engaged workplace, with social and community-building eventsWe offer comprehensive benefits and flexible time off plansExostar is an Equal Opportunity Employment Employer. The company provides equal employment opportunities to all applicants without regard to race, color, religion, sex, national origin, age, marital status, disability status or genetic information. Exostar is committed to providing equal employment opportunities for all persons in all facets of employment including recruiting, hiring, compensation, promotion, training, benefits, transfers and working conditions.QualificationsEDUCATIONBachelors or betterJob SummaryRequisition Number: SENIO001949Job Category: Soft EngineerSchedule: Full-Time
- Senior Software Engineer TS/SCI FSPDepartment: Government Customer- HerndonLocation: Herndon, VAACTIVE TS/SCI CLEARANCE with FS poly REQUIRED TO BE CONSIDERED FOR THIS POSITIONSenior Software Engineer:Analyzes user interfaces, maintain hardware and software performance...Senior
$135k - $216k
ResponsibilitiesPeraton is seeking a Senior Software Engineer in our Herndon, VA location to support a large software development classified program. The selected candidate should have experience with agile software methodology, and software engineering design best practices...SeniorFull timeContract workShift work$220k - $292k
...edge autonomy, AI, computer vision, sensor fusion, and networking technology to the military in months, not years.As a Mission Software Engineer, you will solve a wide variety of problems involving networking, autonomy, systems integration, robotics, and more, while...SeniorFull timeWork experience placementImmediate start$98.5k - $206.8k
Job Title: Senior Software EngineerJob Category: EngineeringTime Type: Full timeMinimum Clearance Required to Start: Top SecretEmployee Type... ...US* * *The Opportunity:We are seeking a Senior Software Engineer to join our growing team based in Sterling, VA or Carry, NC....SeniorContract workWork experience placementFlexible hours$119.8k - $234.7k
...officeRole type: Individual ContributorTravel: Less than 25%Profession: Software EngineeringDiscipline: Software EngineeringCompany: MicrosoftOverviewMicrosoft has an exciting opportunity for a Software Engineer on the Cloud+AI Silver Team. This team will be responsible for...SeniorOngoing contractLocal area3 days per week- ...and Business consulting services. We are in search of a highly motivated candidate to join our talented Team. Job Title: Senior Software Engineer. Location: Reston, VA. Purpose:Performs complex analysis, design, development, automated unit and integration testing,...SeniorWork experience placementImmediate start
- ...active U.S. Government Security Clearance at the Top Secret and/or CBP/DHS suitability level.Vantor is currently seeking a Senior-Level Software Engineer to support our FALCON effort. This role can be performed remotely within the continental United States. As a Vantor...SeniorFull timeRemote work
$168.1k - $227.4k
Application deadline: Sep 26, 2026Bespoke Solutions is seeking a Senior Software Development Engineer to design, build, and operate a mission-critical, multi-tenant platform for managing large-scale fleets of embedded devices across highly secure and enterprise network...SeniorFull timeInternshipWork at officeFlexible hours$130k - $180k
...HawkEye 360 is currently seeking a Senior Command & Control Software Engineer to join the Space Ground Systems Team. The mission of the Ground Systems Team is to provide the tooling to operate and maintain a growing constellation of small commercial satellites. This group...SeniorRemote workNight shift- ...Senior Software Engineer- Onsite Ashburn, VAWe are looking for creative software developer who have a passion to invent, design and implement embedded software along with a curiosity and desire to learn. Your job will be to create or modify Board Support Packages (BSPs...SeniorFull timeFlexible hours
- ...government and commercial entities, and provide services for cloud software development, workload migration, deployment automation and... ...LEVEL: Secret BASIC QUALIFICATIONS Development/software engineering or the development of applications for the processing and...Senior
- ...Job Overview The Senior Software Engineer develops and tests software systems or applications for software enhancements and new products. Responsible for the development, design, test, maintenance, and enhancement of Aclara's Sensor Management System (SMS) and Cellular...SeniorContract work
- ...code comments and clear code. Develop software solutions by studying information needs;... ...the program manager and Chief Software Engineer. Coordinate software development activities... ...Systems, or related STEM degree. Senior‑level experience deploying microservices...SeniorContract workTemporary work
- ...Our client, a Health Insurance company, is looking for a Senior Software Engineer for their Reston, VA/ Hybrid location. Responsibilities: ~25% Perform technical detail design, coding, testing of applications. ~ Serves as subject matter expert for both customer...SeniorImmediate start
- We are looking for an experienced Full Stack Senior Software Engineer to join a growing team in Reston, Virginia. This role is ideal for someone who enjoys creating robust, business-focused software solutions and can contribute across both front-end and back-end development...Senior
$125k - $190k
...team and support our customers in building a safer global future. Overview Of Opportunity As a Two Six Technologies Senior Software Engineer for a large-scale platform for situational awareness and command and control, you will work with the development team, designers...SeniorContract workWork at officeLocal area- ...computing solutions. Founded by ex-Googlers with engineers from Google, Amazon, and Capital One, SZNS... ...data engineering, blockchain, and cloud-native software application development.” We are seeking a talented Senior Software Engineer to join our growing team. As...SeniorWork at office
- ...Senior Full Stack Software Developer w/poly What Impact You'll Have As a Senior Full Stack Software Developer, you will perform as an... ...specifications Collaborate with internal and external engineering teams to define interface control documents (ICDs), subsystem...Senior
- ...requires an active U.S. Government Security Clearance at the TS/SCI level with CI polygraph. Platinum Technologies is seeking a Senior Software Engineer to join our team. In this position you will design, develop, integrate, and maintain software applications and services...Senior
$121.4k - $218.6k
...solutions for government networks? Join Our Custom Government Engineering Team! The Custom Government team operates across the... ...an experienced, self-motivated, and highly productive Senior Software Engineer with a solid systems background. In this role, you...SeniorWork experience placementWork at office$100k - $135k
...our Reston site, we’re assembling a team of forward-thinking engineers and technologists ready to push boundaries. This is your chance... ...from the U.S. Government.****Why Join Our Team?**As a Senior Software Engineer on the Navigation Systems team, you’ll use your C/C++...SeniorFor contractorsWork at officeWorldwideFlexible hours- ...technology solutions that enable collaboration across complex operational environments. Mission is looking for a talented Senior Software Engineer to join our team in the Reston, VA area, supporting cloud-based data integration, information sharing, and systems...SeniorLocal areaFlexible hours
$125.16k - $159.37k
...satellite routers and network management software address the growing complexity of... ...team of smart, creative, and dedicated engineering team-members. This position is based out... ...of a remote work schedule. This is a senior-level position for a Software Engineer....SeniorWork experience placementRemote work- ...U.S. Government Security Clearance at the Top Secret and/orCBP/DHSsuitability level.Vantor is currently seeking aSenior-Level Software Engineer to support ourFALCONeffort. This role can be performed remotely within the continental United States.As a Vantor team member,...SeniorFull timeRemote work
- ...About the Opportunity We're looking for a Senior Software Engineer to help grow our system! You will be working with a smart team of machine learning scientists and software developers on applications and tools that power Seekr's AI products, agents, and tools. You...SeniorPermanent employmentWork experience placementWorldwideFlexible hours
- ...and Business consulting services. We are in search of a highly motivated candidate to join our talented Team. Job Title: Senior Software Engineer - Information Technology Position: Oracle Financials - Techno-Functional Consultant Location: Reston, VA ( Remote)...SeniorRemote work
$114.2k - $206k
...Join to apply for the Senior Software Engineer role at T-Mobile Join to apply for the Senior Software Engineer role at T-Mobile At T-Mobile, we invest in YOU! Our Total Rewards Package ensures that employees get the same big love we give our customers....SeniorFull timeTemporary workPart timeWork experience placementLocal areaFlexible hours$168.1k - $227.4k
Are you passionate about building software systems that operate at massive scale and directly impact millions of customers? As a Software Development Engineer III at Amazon, you will lead the design, development, and delivery of complex software solutions that span the...SeniorTemporary workInternshipFlexible hoursShift workNight shiftDay shift- ...Job Description Job Description We are seeking a Senior Software Engineer to become an integral part of our team! You will be responsible for designing, building and maintaining web applications in a .NET environment. Responsibilities: Lead software development...SeniorFlexible hours
$191k - $253k
...focused on positioning Anduril as a lead provider of specialized engineering and products for Intelligence Community (IC) customers. We... ...team is seeking experienced Rust developers to build out the software ecosystem supporting next-generation hardware platforms powered...SeniorFull timeWork experience placementImmediate start
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Software Engineer. Be the first to apply!
- software engineer full time Herndon, VA
- graduate software developer no experience Herndon, VA
- software engineer healthcare Herndon, VA
- network software engineer Herndon, VA
- software engineer internship Herndon, VA
- senior software engineer Herndon, VA
- software system engineer Herndon, VA
- software developer Herndon, VA
- ngo software engineer Herndon, VA
- startup software engineer Herndon, VA



