Position Overview

We are seeking a Senior Software Integration Engineer to join AST SpaceMobile’s dynamic defense team. This role focuses on integrating multiple software components, modules, and third-party libraries into a cohesive, functional system for our space-based platforms. The ideal candidate will create and manage the software integration environment, develop automation scripts, and troubleshoot complex issues at the intersection of different software modules. This is an onsite role in Tysons Corner, VA.

Key Responsibilities

• Perform hands-on integration of various software components, including firmware, embedded applications, and signal processing algorithms, onto target hardware.
• Develop and maintain software integration plans, procedures, and automated scripts to streamline the build and deployment process.
• Collaborate closely with software development and systems engineering teams to define software interfaces (APIs) and resolve integration dependencies.
• Configure, manage, and maintain the software integration environment, including build servers, version control systems, and CI/CD pipelines.
• Troubleshoot and debug issues during software integration, performing root cause analysis and implementing solutions across teams.
• Document integration processes, software builds, and release configurations to ensure repeatability and traceability.
• Support system-level testing by providing stable software builds and assisting with software-hardware integration verification.

Qualifications

Education:

Bachelor’s degree in engineering or a related technical field.

Experience:

A minimum of 5+ years in software integration, DevOps, or software engineering, preferably in aerospace, defense, or telecommunications environments.

Preferred Qualifications:

• Experience with embedded systems, real-time operating systems (RTOS), or software-hardware integration.
• Active U.S. Security Clearance required.

Soft Skills

• Strong interpersonal skills and proven ability to collaborate effectively within cross-functional teams.
• Excellent written and verbal communication skills for technical documentation and team coordination.
• Meticulous attention to detail to ensure accuracy of integration processes and deliverables
• Strong problem-solving and analytical skills for troubleshooting complex systems.

Technology Stack

• Programming and scripting languages: Python, C/C++, Bash.
• Version control systems: Git.
• Build automation tools: Jenkins, GitLab CI.
• Familiarity with CI/CD pipelines and integration environments. 

Physical Requirements

• Ability to work in a standard office environment and use a computer for extended periods.
• Occasional travel may be required for team collaboration or system testing.

This job description may not be inclusive to the duties and responsibilities listed. Additional tasks may be assigned to the employee from time to time or the scope of the job may change as needed by business demands. 

Overview of Opportunity 

Join the Trusted Electronics & Effects business unit  of Two Six Technologies—where you’ll lead vulnerability research across hardware, software, and operational systems. Working side by side with engineers and security researchers, you’ll guide investigations, identify critical vulnerabilities, and develop countermeasures with operational impact. Our fast-growing roster of government customers relies on us to deliver advanced security solutions, and we’re looking for a Lead Vulnerability Researcher to provide technical leadership and mentorship.

This role requires regular on-site support at the Laurel, Maryland customer site.

What you will do:

• Lead the identification of vulnerabilities and attacks across hardware, software, personnel, logistics, procedures, and physical security.
• Develop proof of concept (PoC) code for identified vulnerabilities
• Reverse-engineer targeted embedded systems to identify vulnerabilities
• Review source code looking for risks and vulnerabilities
• Analyze the effects of vulnerabilities on mission outcomes and operational effectiveness.
• Compare system attack techniques and propose operationally effective countermeasures
• Produce reports, briefings, and perspectives on actual and potential attacks
• Provide technical leadership on research efforts, prioritizing investigations, reviewing methodologies, and overseeing proof-of-concepts.
• Mentor and guide junior engineers and researchers, reviewing technical approaches and fostering skill development.

What you will need (Basic Qualifications):

• Doctorate in Computer Science, Computer/Electrical Engineering, or a related field and 4 years of relevant experience, OR Master’s degree and 6 years of relevant experience, OR Bachelor’s degree and 8 years of relevant experience, OR Associate’s degree and 10 years of relevant experience.
• Relevant experience: computer/information systems design/development, programming, information/cyber/network security, reverse-engineering, vulnerability analysis, penetration testing, computer forensics, information assurance, or systems engineering
• Proficiency in C/C++, Python, and at least one ISA (e.g. x86/ARM/MIPS)
• Proficiency in Linux command-line environments
• Experience using a decompiler such as IDA Pro, Binary Ninja, or Ghidra
• Experience using vulnerability research tools such as emulators or fuzzers
• Experience using a software debugger such as GDB or WinDbg
• Ability to work on-site at Laurel, Maryland customer site regularly.

Nice If You Have (Preferred):

• Experience translating vulnerabilities into operationally relevant impact assessments and countermeasures.
• Experience producing client-facing technical briefings for operational stakeholders
• Experience using a hardware debugger
• Experience with UART, SPI, I2C
• Experience with common secure communications such as TLS or SSH 
• Familiarity with embedded firmware, RTOS, or networked systems
• Familiarity with high-side environments

Security Clearance:

• Active TS/SCI clearance with Polygraph required

#LI-JK1

#LI-ONSITE

Overview of Opportunity 

Join the Trusted Electronics & Effects business unit of Two Six Technologies, where you’ll provide strategic technical leadership in vulnerability research across hardware, software, and operational domains. Working alongside engineers, researchers, and clients, you’ll identify vulnerabilities, assess operational impacts, and develop effective countermeasures. Our fast-growing roster of government customers relies on us to deliver advanced security solutions, and we’re looking for a Principal Vulnerability Researcher to drive research programs and mentor technical teams.

This role requires regular on-site support at the Laurel, Maryland customer site.

What you will do:

• Lead the identification of vulnerabilities and attacks across hardware, software, personnel, logistics, procedures, and physical security, linking them to operational and mission impacts.
• Identify vulnerabilities and potential attacks across hardware, software, procedures, logistics, and physical security of systems
• Develop proof of concept (PoC) code for identified vulnerabilities
• Reverse-engineer targeted embedded systems to identify vulnerabilities
• Review source code looking for risks and vulnerabilities
• Analyze the effects of vulnerabilities on mission outcomes and operational effectiveness.
• Compare system attack techniques and propose operationally effective countermeasures
• Produce reports, briefings, and perspectives on actual and potential attacks
• Provide technical leadership on research efforts, prioritizing investigations, reviewing methodologies, and overseeing proof-of-concepts.
• Mentor and guide junior engineers and researchers, reviewing technical approaches and fostering skill development.

What you will need (Basic Qualifications):

• Doctorate in Computer Science, Computer/Electrical Engineering, or a related field and 7 years of relevant experience, OR Master’s degree and 9 years of relevant experience, OR Bachelor’s degree and 11 years of relevant experience, OR Associate’s degree and 13 years of relevant experience.
• Relevant experience: computer/information systems design/development, programming, information/cyber/network security, reverse-engineering, vulnerability analysis, penetration testing, computer forensics, information assurance, or systems engineering
• Proficiency in C/C++, Python, and at least one ISA (e.g. x86/ARM/MIPS)
• Proficiency in Linux command-line environments
• Experience using a decompiler such as IDA Pro, Binary Ninja, or Ghidra
• Experience using vulnerability research tools such as emulators or fuzzers
• Experience using a software debugger such as GDB or WinDbg
• Ability to work on-site at Laurel, Maryland customer site regularly.

Nice If You Have (Preferred):

• Experience translating vulnerabilities into operationally relevant impact assessments and countermeasures.
• Experience producing technical briefings for operational stakeholders
• Experience using a hardware debugger
• Experience with UART, SPI, I2C
• Experience with common secure communications such as TLS or SSH 
• Familiarity with embedded firmware, RTOS, or networked systems
• Familiarity with high-side environments

Security Clearance:

• Active TS/SCI clearance with Polygraph required

#LI-ZS1

#LI-ONSITE

Overview of Opportunity 

Join the Trusted Electronics & Effects business unit of Two Six Technologies, where you’ll immerse yourself in reverse engineering and vulnerability research on a wide range of embedded systems, software, and operational processes. Working alongside reverse engineers and security researchers, you’ll identify vulnerabilities, analyze attack vectors, and assess operational impacts on some of the most critical systems for our customers. Our fast-growing roster of government customers relies on us to deliver advanced security solutions, and we’re looking for a Senior Vulnerability Researcher to help us continue pushing boundaries. If you’re passionate about vulnerability research that can make a tangible impact on national security, we want you on our team.

This role requires regular on-site support at the Laurel, Maryland customer site.

What you will do:

• Identify vulnerabilities and potential attacks across hardware, software, procedures, logistics, and physical security of systems
• Develop proof of concept (PoC) code for identified vulnerabilities
• Reverse-engineer targeted embedded systems to identify vulnerabilities
• Review source code looking for risks and vulnerabilities
• Analyze the effects of vulnerabilities on mission outcomes and operational effectiveness.
• Compare system attack techniques and propose operationally effective countermeasures
• Produce reports, briefings, and perspectives on actual and potential attacks
• Mentor junior engineers and analysts, reviewing technical approaches and guiding research methodology.

What you will need (Basic Qualifications):

• Bachelor’s degree and 5 years of relevant experience, OR Associate’s degree and 7 years of relevant experience.
• Relevant experience: computer/information systems design/development, programming, information/cyber/network security, reverse-engineering, vulnerability analysis, penetration testing, computer forensics, information assurance, or systems engineering
• Proficiency in C/C++, Python, and at least one ISA (e.g. x86/ARM/MIPS)
• Proficiency in Linux command-line environments
• Experience using a decompiler such as IDA Pro, Binary Ninja, or Ghidra
• Experience using vulnerability research tools such as emulators or fuzzers
• Experience using a software debugger such as GDB or WinDbg
• Ability to work on-site at the Laurel, Maryland customer site regularly.

Nice If You Have (Preferred):

• Experience producing technical briefings for operational stakeholders
• Experience using a hardware debugger
• Experience with UART, SPI, I2C
• Experience with common secure communications such as TLS or SSH 
• Familiarity with embedded firmware, RTOS, or networked systems
• Familiarity with high-side environments

Security Clearance:

• Active TS/SCI clearance with Polygraph required

#LI-JK1

#LI-ONSITE

About VulnCheck

VulnCheck is transforming vulnerability intelligence by helping security teams act faster and with more confidence. Our platform delivers early, high-quality exploit intelligence, deep asset correlation, and contextual insights to help organizations stay ahead of emerging threats.

About the Role

VulnCheck is looking for a Red Team Systems Administrator / Lab Manager to build, maintain, and operate the lab infrastructure that supports our vulnerability research team. This role is responsible for standing up and managing a research environment that includes networking equipment, IoT / OT devices, and the supporting compute, storage, and network infrastructure our researchers depend on to discover, analyze, and validate vulnerabilities.

You'll work closely with our exploit developers and threat researchers to ensure they have reliable, secure, and reproducible environments for testing against real-world hardware and software. The lab is central to VulnCheck's mission — our researchers need to move fast, and the infrastructure has to keep up. While this is a hybrid role, the position requires regular onsite management of physical lab equipment in the Fort Meade, MD area. 

What You'll Do

• Design, build, and maintain the physical and virtual lab infrastructure used by VulnCheck's vulnerability research team.
• Procure, configure, and manage networking equipment (routers, switches, firewalls, wireless access points) and IoT / OT devices used for security research and exploit validation.
• Manage lab network architecture — including segmentation, VLANs, out-of-band management, and isolated test environments to safely run exploit code against live devices.
• Administer Linux and Windows servers, hypervisors, and virtualization platforms (e.g., VMware, Proxmox, KVM) that host vulnerable software and services for testing.
• Maintain firmware libraries and device inventories, ensuring researchers have access to specific hardware and software versions needed for vulnerability analysis.
• Provide remote access infrastructure (VPN, jump hosts, remote console access) so distributed team members can interact with physical lab equipment.
• Automate environment provisioning, configuration management, and lab reset workflows using tools such as Ansible, Terraform, or similar.
• Monitor lab systems for availability, performance, and security — and respond to issues promptly.
• Collaborate with researchers to understand upcoming research targets and proactively prepare the lab environments they need.
• Manage vendor relationships for hardware procurement, warranties, and RMA processes.
• Document lab architecture, procedures, and runbooks to ensure operational continuity.

What You'll Bring

• 8+ years of experience in systems administration, lab operations, or infrastructure engineering.
• Strong hands-on experience with Linux system administration (Ubuntu, CentOS/RHEL, or similar).
• Solid networking fundamentals — TCP/IP, DNS, DHCP, VLANs, firewall configuration, and routing.
• Experience managing and configuring networking equipment (Cisco, Juniper, MikroTik, etc).
• Familiarity with IoT devices and embedded systems — comfortable working with serial consoles, JTAG, firmware flashing, and device provisioning.
• Familiarity with OT/ICS devices and protocols is a huge plus.
• Experience with virtualization and containerization technologies (VMware, Proxmox, KVM, Docker).
• Experience with configuration management and infrastructure-as-code tools (Ansible, Terraform, or similar).
• Ability to work independently and manage priorities across multiple concurrent research efforts.
• Strong documentation habits and clear written communication.
• Scripting skills in Python, Bash, or Go for automating lab workflows; familiarity with Go is a plus. 

Preferred Qualifications

• Experience using Claude or other AI models for task automation. 
• Prior experience supporting a security research, penetration testing, or red team lab environment.
• Prior cybersecurity work experience (at a vendor or in government).
• Experience managing physical lab infrastructure remotely, including out-of-band management (IPMI/iLO/iDRAC), remote PDUs, and KVM-over-IP.

*IMPORTANT NOTE: This position may involve access to technology subject to U.S. export control regulations. Employment is contingent upon the company's ability to authorize access under applicable export control, sanctions, and any other applicable legal or contractual requirements. The company does not guarantee and is under no obligation to seek such authorization if it would be necessary.

What We Offer

We believe people do their best work when they feel supported, trusted, and valued. VulnCheck offers benefits designed to meet a wide range of needs and lifestyles.

Benefits and Perks

• Competitive salary with employee equity program
• Health, dental, and vision coverage
• Unlimited PTO
• 401(k) plan
• Remote friendly environment with flexibility
• Expense reimbursement for home internet and phone
• Ongoing professional development, coaching, and learning resources
• Opportunities for career advancement within a fast-growing team

Why Join Us

Built on over two decades of cybersecurity experience, our team of experts understands the intricacies of vulnerabilities, their exploitation in the wild, and how to leverage this data to build more effective cybersecurity products that produce better outcomes for organizations.

VulnCheck gives organizations a tactical advantage by providing best-in-class exploit & vulnerability intelligence information. We have a sense of duty to protect the critical infrastructure we rely on including medical devices, power grids and telecommunication networks. We were founded in 2021 in Lexington, Massachusetts.

VulnCheck has a transparent, collaborative, and supportive culture — we are looking for people who have a growth mindset, are curious and innovative. Our team is smart, but humble, hardworking, and supportive.

VulnCheck is proud to be an Equal Opportunity Employer. We do not discriminate based upon race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics. VulnCheck is committed to working with and providing reasonable accommodations to applicants with physical and mental disabilities.

T-Rex is looking for a fully cleared HPC Software Engineer 3 to work on a program in the Fort Meade, Maryland area in support of the Intelligence Community.

Responsibilities:

• The HPC Software Engineer designs, develops, tests, deploys, documents, maintains, and enhances complex and diverse software for HPC (high performance computing) systems based upon documented requirements.  Critical for an HSE is either a very strong math background and/or a very strong computer hardware background. One or both of these is required in order for the HSE to be able to understand the intricacies of the HPC architecture that is being targeted by the software being developed, or to understand the complex mathematical principles which underlie the software applications being developed. The HPC systems might include, but are not limited to, processing-intensive analytics, novel algorithm development, manipulation of extremely large data sets, real-time systems, and systems which incorporate data repositories, data transport services, and application and systems development and monitoring. Works individually or as part of a team. Reviews and tests software components for adherence to the design requirements and documents test results. Resolves software problem reports. Utilizes software development and software design methodologies appropriate to the development environment. Provides specific input to the software components of system design to include hardware/software trade-offs, software reuse, use of Open Source Software (OSS) and/or Commercial Off-The-Shelf (COTS)/Government Off-The- Shelf (GOTS) software in place of new development, and requirements analysis and synthesis from system level to individual software components. Working knowledge of Configuration Management (CM) tools and Web Services implementation.

Requirements:

• Bachelor's degree in Math, Computer Engineering, Computer Science, or related discipline from an accredited college or university, plus seven (7) years of experience as an HSE in programs and contracts of similar scope, type, and complexity.
  OR Master’s degree in Math, Computer Engineering, Computer Science, or related discipline from an accredited college or university, plus five (5) years of experience as an HSE in programs and contracts of similar scope, type, and complexity.
  OR Nine (9) years of experience as an HSE in programs and contracts of similar scope, type, and complexity.
• Linux, Linux tools
• Infrastructure automation technology: Ansible, SaltStack, Puppet, Chef, Terraform, etc.
• Willing and able to learn Ansible
• Adapting to and adhering to project-specific Ansible coding standards
• Familiar with and able to perform full software-development lifecycle support with version-control tools (Git, GitLab)
• Works independently, as well as with a team, to ensure that all components are functioning properly
• Stays abreast of the latest industry trends in both open source and commercial solutions. Supports determination of if-and-when to incorporate them into an IAC solution
• Communicative, collaborative, and organized
• Willing and able to learn new tools, protocols, custom software, firmware, and hardware
• Active and transferable U.S. government issued TS/SCI with FSP security clearance is required.

Desirable:  

• Programming in Ansible
• Bash scripting
• Python
• Container orchestration technologies
• Rancher Kubernetes Engine 2 (RKE2)
• Best practices in DevSecOps, system administration, infrastructure network services (DNS, DHCP, PXE, NTP, etc.)
• Security concepts pertaining to one or more of: identity and access management (IAM), access control, secrets management, and/or any security products related to these concepts
• Security architecture
• Cloud security
• Red Hat IDM, Keycloak, HashiCorp Vault, Delinea/Centrify

T-Rex Overview

Established in 1999, T-Rex Solutions, LLC is a proven mid-tier business providing data-centric mission services to the Federal government as it increasingly tries to secure and leverage the power of data. We design, integrate, secure, and deploy advanced technical solutions for our customers so they can efficiently fulfill their critical objectives. T-Rex offers both IT and professional services to numerous Federal agencies and is a leader in providing high quality and innovative solutions in the areas of Cloud and Infrastructure Services, Cyber Security, and Big Data Engineering.

T-Rex is constantly seeking qualified people to join our growing team. We have built a broad client base through our devotion to delivering quality products and customer service, and to do that we need quality individuals. But more than that, we at T-Rex are committed to creating a culture that supports the development of every employee's personal and professional lives. T-Rex has made a commitment to maintain the status of an industry leader in compensation packages and benefits which includes competitive salaries, performance bonuses, training and educational reimbursement, Transamerica 401(k) and Cigna healthcare benefits.

T-Rex is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, sex (including pregnancy and sexual orientation), parental status, national origin, age, disability, family medical history or genetic information, political affiliation, military service, or other non-merit based factors.

In compliance with pay transparency guidelines, the annual base salary range for this position is $160,000 - $190,000. Please note that the salary information is a general guideline only. T-Rex considers factors such as (but not limited to) scope and responsibilities of the position, candidate’s work experience, education/training, key skills, internal peer equity, as well as market and business considerations when extending an offer.

T-Rex offers a diverse and collaborative work environment, exciting opportunities for professional growth, and generous benefits, including: PTO available to use immediately upon joining (prorated based on start date), paid parental leave, individual and family health, vision, and dental benefits, annual budget for training, professional development and tuition reimbursement, and a 401(k) plan with company match fully vested after 60 days of employment among other benefits.