--- title: 'Senior RF Systems Engineer (SDR) at Two Six Technologies' canonical: 'https://feeny.ai/job/senior-rf-systems-engineer-sdr-two-six-technologies-herndon-pcrp43s2ww0p' type: 'job' last_seen: '2026-09-15' --- # Senior RF Systems Engineer (SDR) at Two Six Technologies - **Company:** Two Six Technologies - **Location:** Herndon, VA - **Compensation:** $145k–$218k - **Posted:** 2026-07-27 - **Last confirmed live:** 2026-09-15 - **Apply:** https://job-boards.greenhouse.io/twosixtechnologies/jobs/6126455004 ## 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 seeking a Senior RF Systems Engineer to develop software for DSP/SDR systems. Engineers will perform architecture design, software development, testing, analysis, and debugging to support R&D programs in Herndon, Virginia. The engineer will have the autonomy to define their toolchains, guide lab build-outs, and select the SDR platforms and software required for the work. The primary focus of this role is RF signal generation, protocol analysis, and signal reverse engineering. What you will do (Responsibilities): - Reverse engineer COTS devices to map reception logic, with the objective of generating downlink messages to the device via simulated signals. - Reverse engineer complex RF protocols, focusing on isolating, analyzing, and decoding Pseudo-Random Noise (PRN) codes. - Synthesize and generate custom RF waveforms based on reverse-engineered signal parameters. - Detect, identify, and decode captured RF waveforms and complex communication signals. - Perform RF signal reception and transmission using various baseline modulation schemes (e.g., FSK, PSK, QAM). - Implement custom SDR solutions using existing COTS platforms and software in a Linux environment. - Solve technical challenges in communications, signal collection, data processing, and electronic warfare domains. - Execute experiments and validate generated signals in laboratory facilities using SDR platforms and RF signal test equipment. - Provide subject matter expertise in signal generation, RF reverse engineering, and Digital Signal Processing (DSP). - Collaborate with cross-functional engineering teams in a rapid prototyping environment. What you will need (Basic Qualifications): - Active DoD Top Secret clearance with SCI eligibility required - Degree in Computer Engineering, Electrical Engineering, Mathematics, Physics, Computer Science, or equivalent practical, military, or intelligence community experience. - Minimum 5 years of Digital Signal Processing (DSP) and Software Defined Radio (SDR) development experience. - Extensive experience in RF reverse engineering, including deriving transmission parameters and regenerating target signals. - Proven ability to generate and synthesize complex RF signals and waveforms. - Experience in SIGINT, commercial telecom, cellular, or general communications systems development and testing. - Ability to architect and implement digital signal processing and SDR solutions, with an emphasis on software and algorithmic implementations. Nice if you have (Preferred): - Familiarity with the signal structures, modulations, and protocols of space-based systems (e.g., GPS L1/L2, GNSS, SATCOM). - Experience working with space-dominant modulations like QBPSK and BOC (Binary Offset Carrier). - Experience with Ghidra and firmware reverse engineering. - Deep understanding of digital communication concepts, including Forward Error Correction (FEC), Viterbi and Reed-Solomon decoding, interleaving, and framing analysis. - Experience with satellite simulation software (e.g., AGI STK) or practical knowledge of handling space-related signal phenomena, such as extreme Doppler shift mitigation. Security Clearance: - Active DoD Top Secret clearance with SCI eligibility required ## #LI-AM1 ## #LI-ONSITE 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 $145,353—$218,030 USD Looking for other great opportunities? Check out [Two Six Technologies Opportunities](https://twosixtech.com/careers/current-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](https://twosixtech.com/careers/candidate-resources/)!  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](https://twosixtech.com/about/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](https://twosixtech.com/contact/). 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](https://twosixtech.com/wp-content/uploads/Two-Six-EEO-Policy-Statement-2026.pdf) and the [EEO Poster](https://twosixtech.com/wp-content/uploads/TST-EEO-Know-Your-Rights-2026.pdf). 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. ## About Two Six Technologies ## Company Overview - **One-liner**: Two Six Technologies builds, deploys, and implements innovative products to solve complex national security and humanitarian challenges, focusing on information advantage, cyber defense, and secure communications. - **Entity Type**: Private (no public funding rounds disclosed; defense contractor, likely bootstrapped or government-funded) - **Headquarters**: Arlington, Virginia, USA - **Founded**: Not publicly available (company emerged from a merger of Two Six Labs and other entities around 2020, but exact year not confirmed) - **Founders**: Not publicly available ## Core Business - Primary industry/industries: National security, defense, cyber security, information operations, data analytics, electronic systems, communications. - Target customers: U.S. Department of Defense, U.S. Department of Homeland Security, DARPA, U.S. Cyber Command, Department of State, and allied international partners. - Mission or purpose statement: "Delivering technological superiority for our nation, allies, and partners through rapid, impact-focused innovation" and "achieving defense superiority by developing fast-paced, impactful technology for our nation, allies, and partners." ## Products & Services - **Sentr**: AI-driven command center for the information environment – enables sense, plan, and coordinate effects at scale. Bridges legacy systems to agentic AI securely without rebuilds or disruption. - **IKE**: Information Advantage Platform – provides reliable access and communication for vulnerable and hard-to-reach communities worldwide. - **Agentic AI Orchestrator**: Orchestrates AI agents for cognitive warfare and complex decision-making. - **Cyber**: Products to defend critical networks and protect sensitive data, including object-level encryption for cloud, on-premise, or hybrid environments. - **Data Analytics**: Synthesized, actionable insights for informed mission decisions. - **Electronic Systems**: Sensor technology to integrate, monitor, and advance mission objectives. - **Secure Solutions**: Secure communications and infrastructure for government clients. ## Market Standing - **Valuation/Market Cap**: Not publicly available (private company, no disclosed valuation). - **Key Metric**: Not disclosed (annual revenue); total funding not publicly available. The company works under government contracts (e.g., DARPA, DHS, DoD). - **Notable Investors/Partners**: Partners include U.S. Department of Defense, U.S. Department of Homeland Security, DARPA, U.S. Cyber Command, Department of State, and international allies. Also named a Top 10 Finalist in the NATO Innovation Challenge for Agentic AI in Cognitive Warfare. - **Growth Signals**: Rapid headcount growth (multiple offices across the U.S. – Arlington, Laurel, Fredericksburg, Augusta, Colorado Springs, Austin, San Antonio, Herndon, Chantilly). Active hiring for engineers, scientists, developers, and project managers. Continually expanding product portfolio with AI-driven platforms. ## Competitive Advantages - Deep integration with U.S. national security agencies (DoD, DHS, DARPA) and long-standing government trust. - Focus on "agentic AI" and information warfare – a high-demand, niche area. - Ability to bridge legacy systems with modern AI without requiring rebuilds, reducing disruption for government clients. - Object-level encryption and secure solutions for sensitive data at scale. - Small-company culture despite rapid growth, fostering agility and innovation. ## Strategic Focus - Current priorities: Expanding AI-driven information operations (Sentr, Agentic AI Orchestrator) and secure communications (IKE) for defense and humanitarian missions. - Growth direction: Deepening partnerships with U.S. and allied governments, entering new global markets, and scaling agentic AI capabilities for cognitive warfare. - Developing technologies for vulnerable and hard-to-reach communities, balancing defense and humanitarian impact. ## Why Work Here - Culture highlights: "Small-company atmosphere" with genuine concern for people; "culture is everything" – emphasis on creativity, curiosity, and innovation. Regular team-building events, annual "Two Six Day of Service" volunteering. - Remote/hybrid/office policy: Positions available in multiple offices; some roles listed as Remote. Many roles require on-site presence (likely due to security clearance requirements). - Notable perks: Comprehensive benefits including 401K with employer match and immediate vesting, discretionary profit share, tuition reimbursement, employer-sponsored training & certification, comprehensive health/dental/vision insurance, HSA with employer contribution, life & disability plans, paid parental leave, military leave, community service hours, bonus incentives and awards. - Engineering culture: Collaboration with top scientists, developers, and engineers on projects of national importance. Opportunities for growth through conferences, open discussions, and social events. - Internship program: Structured internships for students, preparing them for success. ## Sources 1. [twosixtech.com](https://twosixtech.com/) – Main website, product overview 2. [twosixtech.com/about](https://twosixtech.com/about/) – About page, location, mission 3. [twosixtech.com/careers/life-at-two-six](https://twosixtech.com/careers/life-at-two-six/) – Culture, values, internship program 4. [twosixtech.com/careers](https://twosixtech.com/careers/) – Benefits, career philosophy, candidate resources 5. [twosixtech.com/careers/current-opportunities](https://twosixtech.com/careers/current-opportunities/) – Current openings, clearance levels, remote/hybrid info ## Other roles at Two Six Technologies - [Project Manager](https://feeny.ai/job/project-manager-two-six-technologies-herndon-bpz9beymm5t9) — Herndon, VA - [Lead Front End Engineer](https://feeny.ai/job/lead-front-end-engineer-two-six-technologies-austin-jzcyppb8q5zz) — Austin, TX - [Lead Front End Engineer](https://feeny.ai/job/lead-front-end-engineer-two-six-technologies-arlington-x6kfdraf1k7m) — Arlington, VA - [Cyber Operations Planner](https://feeny.ai/job/cyber-operations-planner-two-six-technologies-fort-meade-b8gktgtb2qke) — Fort Meade, MD - [Senior Software Engineer](https://feeny.ai/job/senior-software-engineer-two-six-technologies-arlington-cjx2dnbsfske) — Arlington, VA - [CSSO - Senior Security Manager](https://feeny.ai/job/csso-senior-security-manager-two-six-technologies-arlington-0awh1ja4rn2e) — Arlington, VA - [Systems Engineer](https://feeny.ai/job/systems-engineer-two-six-technologies-aurora-ecppggw1c2ja) — Aurora, CO / Herndon, VA - [Systems Architect](https://feeny.ai/job/systems-architect-two-six-technologies-aurora-ekywm7dm8k6w) — Aurora, CO / Herndon, VA - [Program Manager](https://feeny.ai/job/program-manager-two-six-technologies-aurora-mzggwedzxvck) — Aurora, CO / Herndon, VA - [Product Manager](https://feeny.ai/job/product-manager-two-six-technologies-aurora-qkjgb1f88gt7) — Aurora, CO / Herndon, VA