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Full Stack Python Developer Jobs

Twenty

Quartermaster AI

SITEC

Onsite

Hybrid

<h2>About the Company</h2>At Twenty, we're taking on one of the most critical challenges of our time: defending democracies in the digital age. We develop revolutionary technologies that operate at the intersection of the cyber and electromagnetic domains, where the speed of operations exceeds human sensing and complexity transcends conventional boundaries. Our team doesn't just solve problems – we deliver game-changing outcomes that directly impact national security. We're pragmatic optimists who understand that while our mission of protecting America and its allies is challenging, success is possible.<h2>Role Summary</h2>You'll be our eyes, ears, and hands on the ground at a government customer site, ensuring the reliability and performance of Twenty's mission-critical platform running in a restricted, air-gapped AWS environment. This role sits at the intersection of deep technical ownership and customer-facing engineering: you'll define how we measure reliability, lead incident response in a constrained environment, and serve as the primary technical link between what's happening on-site and the engineering team back in Arlington. You'll work closely with the DevSecOps engineer to ensure the platform operates within government security and compliance requirements, and with product engineers to translate operational reality into actionable feedback. You'll report directly to the VP of Engineering. If you thrive operating with autonomy in high-stakes environments and find satisfaction in making complex systems provably reliable, this role is for you.<h2>Who You Are</h2><ul style="min-height:1.5em"><li>You own reliability outcomes, not just uptime dashboards — you define what "healthy" means and hold the system to it.</li><li>You're as comfortable writing a runbook as you are deep in a production incident with limited tooling and no safety net.</li><li>You operate well with minimal remote support — ambiguity doesn't paralyze you, and you know when to escalate versus when to solve it yourself.</li><li>You build trust naturally with external stakeholders, including government customers, and can translate complex technical situations into plain language under pressure.</li><li>You treat toil as a bug: if you're doing something manually more than twice, you automate it.</li><li>You communicate with precision — your incident reports and runbooks are read by people who weren't in the room, and they need to be right.</li><li>You understand that in a restricted environment, you are the feedback loop — and you take that responsibility seriously.</li></ul><h2>What You'll Do</h2><h3>Reliability Engineering</h3><ul style="min-height:1.5em"><li>Define, track, and report on SLIs and SLOs for platform services running in the customer environment.</li><li>Use error budgets to drive reliability conversations with the Arlington engineering team, translating operational data into prioritized engineering work.</li><li>Identify and eliminate toil: build automation for repetitive operational tasks within the constraints of the secure environment.</li><li>Conduct post-incident reviews, own root cause analysis, and drive durable fixes in partnership with the engineering team.</li></ul><h3>Observability &amp; Incident Response</h3><ul style="min-height:1.5em"><li>Own the observability posture for the on-site deployment — dashboards, alerting thresholds, and log pipelines using the LGTM stack (Grafana, Loki, Tempo, Mimir).</li><li>Lead incident response on-site: triage, containment, coordination with Arlington, and customer communication.</li><li>Maintain and continuously improve runbooks for operational procedures and emergency response protocols.</li><li>Serve as the on-call anchor for the customer environment, with clear escalation paths to the engineering team.</li></ul><h3>Deployment &amp; Infrastructure Operations</h3><ul style="min-height:1.5em"><li>Work with the customer deployment team to get Twenty's platform stood up and updated within the restricted environment.</li><li>Manage containerized services (Docker, Docker Compose) across deployment lifecycle — configuration, updates, rollbacks.</li><li>Apply and validate Terraform-based infrastructure changes within the enclave, in coordination with the DSO engineer who owns IaC policy and guardrails.</li><li>Perform capacity planning and flag scaling requirements to the Arlington team before they become incidents.</li></ul><h3>Customer Liaison &amp; Engineering Feedback</h3><ul style="min-height:1.5em"><li>Serve as the primary technical interface between the government customer and Twenty's engineering team — translating operational requirements, constraints, and issues in both directions.</li><li>Represent the operational environment accurately in engineering discussions: what the team in Arlington can't see, you make visible.</li><li>Partner with the DevSecOps engineer on compliance, logging, and audit requirements specific to the customer environment.</li><li>Provide technical guidance and support to customer stakeholders on system behavior and troubleshooting procedures.</li></ul><h2>Must Have</h2><ul style="min-height:1.5em"><li>5+ years of professional experience in site reliability engineering, production operations, or a closely related infrastructure role.</li><li>Proven experience defining and tracking SLIs, SLOs, and error budgets in a production environment.</li><li>Hands-on experience with Docker, Docker Compose, and AWS (EC2, ECS, RDS, VPCs, security groups) in production deployments.</li><li>Solid Linux/Unix systems administration skills; productive in constrained environments where GUI tooling may be limited or unavailable.</li><li>Experience with Terraform for infrastructure provisioning and configuration, working within DSO-provided policy guardrails.</li><li>Experience with the LGTM observability stack or equivalent (Grafana, Loki, Prometheus/Mimir, distributed tracing).</li><li>Strong incident response experience: you've led responses, written post-mortems and runbooks, and shipped the preventive fix.</li><li>Scripting proficiency in Python or Bash for operational automation, with familiarity in Go a plus; experience with PagerDuty or equivalent on-call tooling.</li><li>Experience working in or directly supporting government or defense environments, including air-gapped or enclave deployments.</li></ul><h2>Nice To Have</h2><ul style="min-height:1.5em"><li>Experience with NATS or similar pub/sub messaging systems in production.</li><li>Background in cyber operations, intelligence systems, or signals environments.</li><li>AWS certifications (Solutions Architect, SysOps, or DevOps Engineer).</li></ul><h2>Security Requirements</h2><ul style="min-height:1.5em"><li>Must possess and be able to maintain a TS/SCI security clearance with appropriate polygraph</li><li>U.S. citizenship required</li><li>Willingness to travel occasionally for customer engagements and operational support</li></ul>If this role sounds like you, apply and share with us your interest.Some positions may require eligibility to obtain a U.S. Government security clearance. Any clearance requirement will be listed in the role description.Twenty is an equal opportunity employer. We consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, veteran status, disability, or any other protected status.If you need a reasonable accommodation during the hiring process, let us know and we will work with you.

Forward Deployed Site Reliability Engineer (TS/SCI Required)

Site Reliability Engineer

5+ years SRE/production ops; define SLI/SLOs; Docker/AWS; Linux; Terraform; LGTM stack; incident response; scripting (Python/Bash); defense environment experience; TS/SCI clearance.

Forward Deployed Site Reliability Engineer

5+ years SRE/production ops, Docker/AWS, Terraform, LGTM stack, government/air-gapped environments, incident response, on-site customer liaison.

<h2>About Us: </h2>At Quartermaster AI, we believe the ocean should be a safe and sustainably managed resource for all. By leveraging cutting-edge AI and robotics, we unlock capabilities that were recently impossible. Our distributed open-ocean systems enable every vessel to sense, compute, and communicate, enhancing maritime domain awareness for those who need it most. Our systems operate in contested environments where reliability and security are non-negotiable.<h2>Job Description: </h2>As our Lead Security Operations Engineer, you will own the full spectrum of security operations, from detection and incident response to infrastructure hardening and vulnerability management. This is a builder’s role; you will architect and automate the defensive security stack that protects our cloud environments, development pipelines, and edge-deployed maritime systems. You will work closely with Engineering and GRC teams to ensure our security posture is operationally excellent, resilient against sophisticated threats, and compliance-ready.<h2>Key Responsibilities:</h2><ul style="min-height:1.5em"><li>SecOps Leadership: 8+ years of experience in security operations and detection engineering, with a proven track record of architecting and defending infrastructure within startups in the defense industry.</li><li>Defensive Architecture: Expert-level experience building and automating security monitoring stacks, including SIEM/SOAR platforms (Splunk, Elastic, Sentinel), EDR, and cloud-native security tooling.</li><li>Incident &amp; Threat Management: Proven ability to lead end-to-end incident response, proactive threat hunting, and full-spectrum vulnerability management across AWS, Azure, or GCP environments.</li><li>Automation &amp; Hardening: Proficiency in Python or Bash for security orchestration and experience implementing hardening standards for CI/CD pipelines, container environments (Kubernetes), and edge-deployed systems.</li><li>Mission Compliance: Strong ability to align security operations with NIST 800-171 and CMMC frameworks, translating operational metrics into executive-level reporting and strategic guidance.</li></ul><h2>Qualifications:</h2><ul style="min-height:1.5em"><li>Core Requirements: U.S. citizenship with the ability to maintain a security clearance; Bachelor’s degree in CS, Cybersecurity, or equivalent technical experience.</li><li>Technical Mastery: Deep hands-on experience with SIEM platforms, security automation, and cloud security (IAM, network security, and cloud-native monitoring).</li><li>Advanced Skills: Preferred certifications such as GIAC (GCIH, GCIA), OSCP, CISSP, or AWS/Azure Security specialties.</li><li>Industry Background: Experience with red/purple team exercises, adversary emulation (MITRE ATT&amp;CK), and operating in critical infrastructure or defense environments.</li></ul><h2>Benefits:</h2><ul style="min-height:1.5em"><li>Competitive salary and high-upside equity package.</li><li>Flexible work hours and hybrid/remote work options.</li><li>Comprehensive medical, dental, and vision benefits.</li><li>The opportunity to build a security organization from the ground up for mission-critical maritime defense technology.</li></ul>

Lead Security Operations Engineer

8+ years in security operations, defense startups, automated security stacks, incident management, cloud security, and compliance with NIST 800-171/CMMC.

SITEC is seeking a skilled and motivated Performance Monitoring / Software Engineer to join a dynamic team focused on building and enhancing performance-monitoring solutions for complex systems in a secure environment. This is a great opportunity for someone who enjoys solving technical challenges, working with modern monitoring and automation tools, and contributing to mission-driven work.
In this role, you will help develop and maintain automated performance-checking solutions, support system instrumentation efforts, and build software that captures and visualizes performance metrics across multiple environments. You will work with technologies such as Jenkins, REST APIs, Elastic Stack, OpenTelemetry, and secure enterprise infrastructure to improve visibility into system performance and reliability.
We are looking for someone who is technically strong, collaborative, and excited to work alongside a team dedicated to building high-impact solutions.
<h3 data-section-id="1j5ac4d" data-start="1204" data-end="1222">What You'll Do</h3>
<ul data-start="1223" data-end="2061">
<li data-section-id="1bqwmai" data-start="1223" data-end="1304">Support the development of performance-monitoring solutions for complex systems</li>
<li data-section-id="xluxcz" data-start="1305" data-end="1400">Leverage Jenkins automated execution architecture to support automated performance checks</li>
<li data-section-id="1nwar7l" data-start="1401" data-end="1477">Instrument various environments to capture and analyze performance metrics</li>
<li data-section-id="1qsft8d" data-start="1478" data-end="1554">Build software solutions using REST APIs to automate metric collection</li>
<li data-section-id="y8shno" data-start="1555" data-end="1619">Store and analyze performance data using the Elastic Stack</li>
<li data-section-id="1en7b8h" data-start="1620" data-end="1703">Develop dashboards and visualizations to help teams understand system performance</li>
<li data-section-id="zkvcxf" data-start="1704" data-end="1804">Integrate open source and commercial off-the-shelf (COTS) products within a secure environment</li>
<li data-section-id="tuuop2" data-start="1805" data-end="1939">Work in environments utilizing PKI-based authentication, corporate authorization services, firewalls, and SSL/TLS communications</li>
<li data-section-id="1y8sr20" data-start="1940" data-end="2061">Collaborate with technical teams to improve application, endpoint, operating system, and network performance monitoring</li>
</ul>
<h3 data-section-id="8b3p4d" data-start="2063" data-end="2090">Required Qualifications</h3>
<ul data-start="2091" data-end="3172">
<li data-section-id="1cyzxtd" data-start="2091" data-end="2125">Active TS/SCI with Polygraph</li>
<li data-section-id="zp05uw" data-start="2126" data-end="2211">Twelve (12) years of experience in software development or software engineering</li>
<li data-section-id="1d7cksd" data-start="2212" data-end="2426">Bachelor's degree from an accredited college or university in Computer Science or a related discipline
<ul data-start="2325" data-end="2426">
<li data-section-id="1abq4xc" data-start="2325" data-end="2426">An additional four (4) years of software development experience may be substituted for a degree</li>
</ul>
</li>
<li data-section-id="19zdkai" data-start="2427" data-end="2569">Experience with Elastic Stack, including:
<ul data-start="2477" data-end="2569">
<li data-section-id="1puu56r" data-start="2477" data-end="2492">Elasticsearch</li>
<li data-section-id="6cnte9" data-start="2495" data-end="2505">Logstash</li>
<li data-section-id="1px9l7q" data-start="2508" data-end="2516">Kibana</li>
<li data-section-id="1ptsq4e" data-start="2519" data-end="2569">Elastic Application Performance Monitoring (APM)</li>
</ul>
</li>
<li data-section-id="18nymbw" data-start="2570" data-end="2660">Experience installing, updating, and maintaining multiple Elastic Stack environments</li>
<li data-section-id="mfu5yc" data-start="2661" data-end="2719">Experience creating and modifying Logstash pipelines</li>
<li data-section-id="516jm3" data-start="2720" data-end="2781">Experience creating and modifying Kibana visualizations</li>
<li data-section-id="1hbw80" data-start="2782" data-end="2865">Experience instrumenting systems with Elastic Agent and Elastic APM Agent</li>
<li data-section-id="rm3px8" data-start="2866" data-end="2946">Experience with OpenTelemetry (OTEL) and OpenTelemetry Protocol (OTLP)</li>
<li data-section-id="525ygc" data-start="2947" data-end="2991">Experience with Python and/or Vega</li>
<li data-section-id="krvm3x" data-start="2992" data-end="3106">Familiarity with web application technologies such as HTML, JavaScript, web servers, and application servers</li>
<li data-section-id="1dv0xu5" data-start="3107" data-end="3143">Proficiency with UNIX commands</li>
<li data-section-id="mz5j49" data-start="3144" data-end="3172">Proficiency in Windows</li>
</ul>
<h3 data-section-id="1v9sa24" data-start="3174" data-end="3192">Desired Skills</h3>
<ul data-start="3193" data-end="3555">
<li data-section-id="1kgv9jk" data-start="3193" data-end="3353">Experience with the MicroFocus Business Service Management (BSM) tool suite, including:
<ul data-start="3289" data-end="3353">
<li data-section-id="1e1rpkv" data-start="3289" data-end="3311">MicroFocus SiteScope</li>
<li data-section-id="1bl4fpk" data-start="3314" data-end="3353">MicroFocus Operations Manager i (OMi)</li>
</ul>
</li>
<li data-section-id="18gggv4" data-start="3354" data-end="3385">Experience with AWS Cloud</li>
<li data-section-id="cc1b6k" data-start="3386" data-end="3412">Experience with NiFi</li>
<li data-section-id="1pq7yru" data-start="3413" data-end="3442">Experience with Jenkins</li>
<li data-section-id="j7231w" data-start="3443" data-end="3473">Experience with Selenium</li>
<li data-section-id="14ipfw1" data-start="3474" data-end="3520">Experience with Ansible or Terraform</li>
<li data-section-id="zdmo99" data-start="3521" data-end="3555">System administration background</li>
</ul>
<h3 data-section-id="1oixvnu" data-start="3557" data-end="3575">Why Join SITEC</h3>
At SITEC, you'll have the opportunity to work on meaningful technical challenges in support of critical mission environments, alongside a team that values collaboration, innovation, and technical excellence. We are looking for professionals who are ready to make an impact and grow their expertise in a highly secure, fast-paced setting.

Senior COTS Integrator

TS/SCI with Polygraph; 12+ years software development/engineering experience; Bachelor's in Computer Science or related field; strong Elastic Stack, web services, scripting, and Linux experience.

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