Senior Software Engineer (TS/SCI w/poly)
Quick Summary
TS/SCI & Poly Years of Experience: 14 Work site requirement: 5 days a week in office Travel: None Working with SIXGEN SIXGEN is committed to solving our customers’ hardest problems with eagerness,
Requirements
~1 min readSIXGEN is committed to solving our customers’ hardest problems with eagerness, effectiveness, and efficiency. We reject the status quo and constantly look for new ways to push the boundaries of our field. SIXGEN is a small company that works with the big picture in mind, taking on projects with real significance that grow our capacity to tackle even more fascinating development problems. We’ve earned a reputation for efficiency, effectiveness, and impact since our founding.
SIXGEN recognizes that a company is nothing without well-cared for employees. We cultivate an encouraging and innovative workplace environment and give employees flexibility to work on their own terms. SIXGEN offers industry-leading benefits, including
- Employer-funded health, dental, vision, and life insurance
- Flexible leave policy (Need Vacation - Take It!)
- Flexible hours and opportunities to work from home
- 4% 401(k) contribution, vested immediately
- Reimbursements for training events, gym memberships, cell phone and internet bills, and lunches with coworkers
At SIXGEN, you’ll provide meaningful support to our federal customers. Your commitment to our customer’s missions, curiosity, and attention to detail will make you a valuable addition to the SIXGEN team.
SIXGEN is seeking a Software Engineer to support the implementation, troubleshooting, maintenance, and ongoing support of agile software development efforts focused on modernizing systems. This role requires applying advanced principles, theories, and concepts while contributing to the development of new approaches and solutions.
The ideal candidate will tackle highly complex challenges and deliver innovative, effective solutions. This position operates with significant autonomy and requires sound judgment in decision-making, as well as the ability to mentor or supervise team members in both technical and organizational competencies.
A bachelor’s degree with 8+ years of relevant experience is required; however, equivalent professional experience or applicable certifications may be considered in lieu of a degree for certain roles.
- Bachelor's degree in Computer Science and 14+ years of experience with software engineering, or
18+ years of experience with software engineering in lieu of a degree. - Experience in software development with basic programming languages, technologies, tools, or web development stacks
- Experience with Java and JavaScript in a Linux environment
- Experience writing source code for new applications or generating and enhancing code samples for existing applications
- Experience using back-end and front-end languages to develop complete solutions
- Experience designing, modifying, developing, writing, and implementing software applications using agile methods
- Experience creating solutions to complex problems within a collaborative, cross-functional team
- TS/SCI clearance with a polygraph
- Experience with Java libraries, including MongoDB, Spring, and OSGi
- Experience with Perl, Python, Lua, and NGINX
- Ability to work in a fast-paced, highly collaborative, and team-oriented environment and balance long- and short-term taskings
At SIXGEN, we are committed to fair and equitable compensation practices. The anticipated salary range for this role is $250,000 - $295,000 per year, depending on experience and qualifications. This range reflects our compensation philosophy, which takes into account various factors including the candidate's relevant experience.
At SIXGEN, we embrace people of all backgrounds. We are an equal opportunity employer.
SIXGEN does not discriminate in employment, services, and activities on the basis of race, color, religion, national origin, sex, gender identity, sexual orientation, pregnancy, childbirth or related medical conditions, age, marital status, veteran status, disability, or any other basis prohibited by law
Listing Details
- Posted
- March 26, 2026
- First seen
- March 26, 2026
- Last seen
- April 20, 2026
Posting Health
- Days active
- 25
- Repost count
- 0
- Trust Level
- 34%
- Scored at
- April 20, 2026
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