Senior Software Developer

Two Six Technologies · Arlington, Virginia · Engineering

Posted 2026-08-18

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Two Six Technologies is seeking a Senior Software Developer to work on multi-domain platforms serving critical national security functions. In this role, you will be a part of the data team that is responsible for maintaining several internally-developed data migration tools. You will work closely with developers that have experience with these tools to learn, and ultimately own, aspects of those tools. The ideal candidate for this position will be a self-starter that has a passion for learning and a history of working very closely with data.

This is a full-time position, on-site at our TST Arlington office with core business hours between 9am and 3pm, Monday-Friday.

Responsibilities:

Work closely with internal and external stakeholders to develop requirements and solutions to complex data needs

Provide ongoing maintenance, support and enhancements to existing systems and platforms

Work directly with engineers in the field to debug and troubleshoot production issues

Provide occasional after-hours support for scheduled production deployments

Provide Program and Product Managers with reliable time and effort estimates for technical deliverables

Provide technical and functional guidance and support to other team members as needed

Minimum Qualifications:

Excellent verbal and written communication skills

Minimum of 5 years of experience in software engineering

Minimum of 1 years of experience with Python

Minimum of 3 years of experience working with data in relational databases

Experience developing in a Unix environment

Preferred Qualifications:

Experience with Postgres, Docker, Kubernetes, Bash scripting

Experience working with agentic AI agents

Experience with event-driven processing, message brokers, or real-time data architectures

Experience using Git and Jira in a development workflow

Experience with DevOps processes

Experience creating data models in relational databases

Experience working in an agile environment

Experience with data migrations

DoD 8570 Level II or Level III Certification; for example, Comptia Security + or CISSP

Top Secret security clearance or ability to obtain

#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

$125,000—$180,000 USD

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