SECTION I · THE BRIEF
Brief #91512Updated 10 SEP 2026ARLINGTON, VAGreenhouseSOFTWARE COMPANIES
Employbl Company Profile

Senior Software Engineer

Two Six Technologies provides cybersecurity and technology solutions for national security customers. The company delivers R&D, innovation, productization, and implementation expertise in cyber, data science, mobile,…

Location
Arlington, VA
Company size
200–1,000
Posted
Yesterday
Comp band
$125K–$201K
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  • 02Seniority & experience requirementsLocked
  • 03Interview process & rubricLocked
  • 04Hiring manager & team contextLocked
  • 05Growth trajectory in this roleLocked
  • 06Offer & decision timelineLocked
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Job listing · Updated 10 SEP 2026

Senior Software Engineer

Two Six Technologies· Arlington, VirginiaView company profile

Job title
Senior Software Engineer
Job location
Arlington, Virginia
Job listing URL
https://job-boards.greenhouse.io/twosixtechnologies/jobs/6188612004
Job description

At Two Six Technologies, we build, deploy, and implement innovative products that solve the world’s most complex challenges today. Through unrivaled collaboration and unwavering trust, we push the boundaries of what’s possible to empower our team and support our customers in building a safer global future.

Overview of Opportunity 

Two Six Technologies is hiring a Senior Software Developer to support the customer's mission-essential applications within an Agile Team. The developer will be responsible for the development and support of high-performance Go-based multi-domain platforms,  leveraging a distributed database and messaging infrastructure on a decentralized compute mesh.

Location: Arlington, Va

What you will do:

  • Implement complex platform architectures including, but not limited to, distributed or decentralized topologies, scalable and efficient data fabric, APIs, message queuing and event streaming, secure authentication and authorization, and containerization and orchestration.
  • Participate in code reviews and ensure high-quality, reusable, and highly concurrent code.
  • Troubleshoot and debug complex distributed systems issues, including performance optimization, latency reduction, and database query tuning.
  • Provide continuous maintenance, support, and enhancements in existing data pipelines and backend systems.
  • Provide customer support for software systems and application issues.
  • Stay up to date with industry trends, and emerging technologies, applying this knowledge to improve our backend architecture.

What you will need:

  • Minimum of 5+ years of Software Development experience, or the equivalent combination of education, technical training or work experience.
  • Strong proficiency in Go (Golang), including experience with concurrent programming, Goroutines, and microservices architecture.
  • Deep understanding of Distributed Systems, including fault-tolerant design, event-driven architectures (e.g., Kafka, RabbitMQ), and service mesh or discovery tools.
  • Strong proficiency with Databases, including advanced relational schema design (e.g., PostgreSQL), NoSQL solutions (e.g., DynamoDB, Cassandra), and distributed caching (e.g., Redis).

Security Clearance:

  • Eligibility to obtain and maintain a TS/SCI clearance 

#LI-MS1

Two Six Technologies is committed to providing competitive and comprehensive compensation packages that reflect the value we place on our employees and their contributions. We believe in rewarding skills, experience, and performance. Our offerings include but are not limited to, medical, dental, and vision insurance, life and disability insurance, retirement benefits, paid leave, tuition assistance and professional development.

The projected salary range listed for this position is annualized. This is a general guideline and not a guarantee of salary. Salary is one component of our total compensation package and the specific salary offered is determined by various factors, including, but not limited to education, experience, knowledge, skills, geographic location, as well as contract specific affordability and organizational requirements.

Salary Range
$124,600—$200,500 USD

Looking for other great opportunities? Check out Two Six Technologies Opportunities for all our Company’s current openings! 

Ready to make the first move towards growing your career? If so, check out the Two Six Technologies Candidate Journey!  This will give you step-by-step directions on applying, what to expect during the application process, information about our rich benefits and perks along with our most frequently asked questions.  If you are undecided and would like to learn more about us and how we are contributing to essential missions, check out our  Two Six Technologies News  page!  We share information about the tech world around us and how we are making an impact!  Still have questions, no worries!  You can reach us at Contact Two Six Technologies. We are happy to connect and cover the information needed to assist you in reaching your next career milestone.

Two Six Technologies is an Equal Opportunity Employer and does not discriminate in employment opportunities or practices based on race (including traits historically associated with race, such as hair texture, hair type and protective hair styles (e.g., braids, twists, locs and twists)), color, religion, national origin, sex (including pregnancy, childbirth or related medical conditions and lactation), sexual orientation, gender identity or expression, age (40 and over), marital status, disability, genetic information, and protected veteran status or any other characteristic protected by applicable federal, state, or local law. For more information review the Two Six Technologies Equal Employment Opportunity and Affirmative Action Policy and the EEO Poster. 

If you are an individual with a disability and would like to request reasonable workplace accommodation for any part of our employment process, please send an email to accommodations@twosixtech.com. Information provided will be kept confidential and used only to the extent required to provide needed reasonable accommodations.

Additionally, please be advised that this business uses E-Verify in its hiring practices.

By submitting the following application, I hereby certify that to the best of my knowledge, the information provided is true and accurate.

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Two Six Technologies headquarters

Arlington, VA

Company size

200–1,000 employees

Founded

2021

Total raised

$54,561,935

View company profile ↗

Funding rounds

  • Series Unknown$10M
  • Series Unknown$2.2M
  • Series Unknown$8.7M
  • Series Unknown$10M
  • Series Unknown$4.8M
  • Series Unknown$18.9M