Senior Software Engineer
Sightline Systems
We are seeking an experienced Senior Software Engineer to lead and mentor our team of professional software developers. The ideal candidate will bring deep technical expertise in enterprise application development, full-stack web technologies, and modern cloud infrastructure, combined with strong leadership abilities and a passion for developing talent. Location Fairfax, VA Required Qualifications Core Development Skills Strong proficiency in Java EE platform development for enterprise applications Experience with JSF 2.0 framework Solid understanding of C/C++ programming Cross-platform development experience in Linux/Unix and Windows environments Database & Data Management Proven experience with relational databases and SQL (PostgreSQL, MySQL, Oracle) Working knowledge of ORM technologies such as Hibernate Experience with Time Series databases, specifically InfluxDB Modern Development Practices Proficiency in developing RESTful APIs Mobile application development experience Scripting capabilities in both Windows and Linux environments Hands‑on experience with AWS cloud technologies for building and deploying applications Strong version control skills using Git, including gitflow workflows Experience leveraging AI‑assisted coding tools (e.g., GitHub Copilot, Claude, ChatGPT) to enhance development productivity and code quality Preferred Qualifications Experience with any of the following technologies is highly desirable: Dart and Flutter Enterprise JavaBeans (EJB) Java Management Extensions (JMX) and Remote Method Invocation (RMI) PrimeFaces framework JBoss/WildFly application servers jQuery and Ajax for enhanced web interactivity Leadership Responsibilities Lead and mentor a team of professional software developers Provide technical guidance and code review oversight Foster a collaborative team environment that encourages professional growth Guide architectural decisions and establish development best practices Coordinate with stakeholders to translate requirements into technical solutions Mentor junior and mid‑level developers in career development Bachelor’s degree or equivalent in information technology, or computer science. Professional Requirements Education: Bachelor's degree in Computer Science, Information Technology, or equivalent experience Experience: 7+ years of professional software development experience Strong organizational and task management skills Demonstrated ability to adapt and learn new technologies Excellent written and verbal communication skills in English Proven track record of effective team collaboration Work Authorization: Must be a U.S. Citizen; Sightline Systems is not able to sponsor international hires for this role What We're Looking For We need a technical leader who can work across the full technology stack while effectively guiding and developing a team. You should be comfortable making architectural decisions, mentoring developers at various skill levels, and balancing hands‑on development with leadership responsibilities that impact our products and team culture. About Sightline Sightline offers a real‑time operations intelligence solution focused on analytics, root‑cause analysis and correlation of data from any source — critical IT systems, applications, storage, databases — down to the process level. Sightline's powerful analytics go beyond point‑in‑time data to include over time and real‑time trend analysis, with abnormal behaviors or events dynamically communicated for appropriate actions. Job Type Full‑time Benefits & Compensation 401(k) 401(k) matching Dental insurance Flexible schedule Health insurance Health savings account Life insurance Paid time off Parental leave Professional development assistance Vision insurance Schedule 8‑hour shift Ability to commute/relocate Fairfax, VA 22030: Reliably commute or planning to relocate before starting work (Preferred) Experience VMWare: 1 year (Preferred) Linux: 1 year (Preferred) Language English (Required) Work Location In person #J-18808-Ljbffr Sightline Systems
- ...technical data analysis, IT security research, data integration, software evaluation, and graphical visualization while using the Sponsor... ..., workflows, and page layouts. Legacy Modernization Reverse engineer legacy applications and migrate Lotus Notes data into SharePoint...SeniorFull timeWork at officeLocal areaImmediate start
$112.65k - $147.8k
Senior Software Engineer As a Senior Software Engineer you will work with a team of full-stack developers that work on all server-side aspects of smart home security. Our mandate is very broad and includes but not limited to processing security events, provisioning equipment...SeniorFull timeWork experience placementCasual workWork at officeImmediate start- ...challenge. At Antithesis, we run entire software systems inside a deterministic simulation... ...is the Fuzzer, our autonomous search engine for bugs and one of the most technically... ...continuously without ever letting up. As a Senior Engineer on the Autonomous Search team, you...SeniorFull timeWork at office
- ...builds, Nix for infrastructure. C/C++ and Rust for kernel and systems programming. Typescript (and JS) on the front end & Node.js engine on the back, too. All the other languages also: see our list of SDKs The Team Our team is comprised of people with a...SeniorFull timeWork at office
- ...DoD) to transform data into actionable intelligence, ensuring mission success in an evolving world. Our mission-first software and data engineering platform modernizes data operations, utilizing advanced workflows, CI/CD, and secure DevSecOps practices. We focus on...SeniorFull timeFlexible hours
- ...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...SeniorFull timeContract workTemporary work
$130k - $180k
...HawkEye 360 is seeking a Senior Command & Control Software Engineer to join their Space Ground Systems Team. The role involves designing and maintaining critical software for satellite operations, focusing on command and control systems and real-time data processing....Senior- ...Bespoke 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 environments. We build infrastructure...Senior
- ...We are seeking a strong Software Engineer to join our software development team. You will be responsible for designing, developing, testing, and integrating custom software solutions across the full technology stack. The ideal candidate will have full stack experience...SeniorFull timeLocal area
- ...A cybersecurity firm is seeking a Senior Software Engineer for their Intelligence Services team. This role involves developing innovative products leveraging AI and cloud technologies, contributing to a high-performing team, and ensuring continuous delivery of secure,...SeniorRemote work
$140k - $215k
...Australia-Employment is looking for a Senior Software Engineer in McLean, VA. This role involves designing and implementing custom solutions and features for the core product, while engaging in research and development. The ideal candidate has a strong foundation in computer...Senior$157.3k - $215.1k
...training and more. Join us to drive positive, lasting change that moves missions and the government forward! As Senior Software Engineer, you’ll bring creative architect solutions to end customers, with the goal to make an impact across the federal government...SeniorFull timeLive inWork at officeLocal area- ...Senior Software Engineer TS/SCI FSP Department: Government Customer- Herndon Location: Herndon, VA ACTIVE TS/SCI CLEARANCE with FS poly REQUIRED TO BE CONSIDERED FOR THIS POSITION Senior Software Engineer: Analyzes user interfaces, maintain hardware...Senior
$160k - $210k
...security. Altamira believes that our people and the culture of our company differentiate us from other companies. Position: Senior Software Engineer Position Location: Springfield, Virginia (NGA-NCE) - Onsite 5 days/week Position Description: To lead and own...SeniorWorldwide$145k - $175k
...who share our passion for advancing technology and strengthening the missions we serve. Position Overview SteerBridge seeks Software Engineers to support delivery efforts for our F-35 project. This initiative is focused on modernizing and enhancing security, reliability...SeniorWork experience placement- ...Business consulting services. We are in search of a highly motivated candidate to join our talented Team. Job Title: Senior Software Engineer Location: McLean,VA Overview Summary: Do you love building and pioneering in the technology space? Do you...SeniorInternship
$140k - $160k
...Zachary Piper Solutions is seeking a talented Senior Software Engineer to join our team in Springfield, VA. As a Senior Software Engineer, you will play a key role in supporting the Geospatial Intelligence Agency (NGA) by designing, developing, and maintaining geospatial...SeniorWork experience placement- ...facilitate the development and implementation of innovative healthcare software solutions, including artificial intelligence (AI) applications... ...integrated into clinical workflows. If you are a software engineer with a passion for improving healthcare for the world, we want...Senior
- Embark on a thrilling journey with Expedition Technology (EXP) where your software engineering prowess can ignite revolutionary advancements in defense and intelligence. We're scouting for trailblazers skilled in backend and systems-level engineering, ready to disrupt...SeniorFlexible 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...SeniorWork experience placementRemote workWorldwideNight shift- ...Senior Software Engineer SZNS Solutions (pronounced "seasons") is a technology consulting company and Google Cloud Partner based in Reston VA. We specialize in delivering agentic AI and cloud computing solutions. Founded by ex-Googlers with engineers from Google, Amazon...Senior
- ...Job Title: Sr Software Engineer Duration: 12 months (possible to hire) Location: Reston, VA(Hybrid)-20191 Job Description: Qualifications To perform this job successfully, an individual must be able to perform each essential duty satisfactorily....SeniorWork experience placement
- ...Senior Software Engineer Apply now » Date: Jul 9, 2026 Location: Herndon, VA, US, 20171 Company: Hubbell Incorporated Job Overview The Senior Software Engineer develops and tests software systems or applications for software enhancements and new products...SeniorContract workFlexible hours
$157.3k - $215.1k
...Senior Software Engineer At Accenture Federal Services, nothing matters more than helping the US federal government make the nation stronger and safer and life better for people. Our 13,000+ people are united in a shared purpose to pursue the limitless potential of...Senior- ...Senior Software Engineer – Herndon, VA TS/SCI with Poly At Bcore, our strength comes from how we deliver impact to the mission. Whether it’s architecting critical IT solutions, producing actionable intelligence, or developing cutting‑edge technology, we succeed because...Senior
$135k - $216k
...Senior Software Engineer Job Locations US-VA-Herndon Requisition ID 2026-168417 Position Category Information Technology Clearance Top Secret/SCI w/Poly Responsibilities Peraton is seeking a Senior Software Engineer...SeniorFull timeContract workShift work- ...Software Engineer Opportunity At Range At Range, we're building towards a world where anyone can live the financial life they imagine for themselves. If that sounds like a mission you want to be a part of, let's create it together. We're building AI-powered wealth management...Senior
- ...external technology communities, and mentoring other members of the engineering community Collaborate with digital product managers, and... ...Qualifications: Bachelor’s Degree At least 4 years of experience in software engineering (internship experience does not apply) Preferred...SeniorFull timePart timeInternshipLocal area
- ...innovate? At CertiPath you can have both while making the world more secure and simplifying access processes. We are seeking a Senior Software Engineer in Test (SSET) to mature and automate our Test and QA processes, yielding world-class programs that ensure our products...SeniorTemporary workWork experience placementLocal areaFlexible hours3 days per week
- ...Senior Agentic Software Engineer Why choose between doing meaningful work and having a fulfilling life? At MITRE, you can have both. That's because MITRE people are committed to tackling our nation's toughest challenges—and we're committed to the long-term well-being...SeniorInternshipLocal areaImmediate start
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Software Engineer. Be the first to apply!
- ngo software engineer Fairfax, VA
- entry level software engineer remote Fairfax, VA
- software developer positions Fairfax, VA
- software development engineer aws Fairfax, VA
- consulting software engineer Fairfax, VA
- financial software developer Fairfax, VA
- software developer Fairfax, VA
- software engineer healthcare Fairfax, VA
- cybersecurity software engineer Fairfax, VA
- software engineer travel Fairfax, VA


