Staff Frontend SWE
Lead frontend architecture for mission-critical cyber operations interfaces. Build high-performance React/TypeScript applications with real-time data visualization and mentor engineers.
Twenty
Industrial-scale cyber warfare software for US defense
cybersecurityArlington, VA1-50Series AOnsiteFounded 2024
About
Twenty builds intelligent, autonomous systems that automate and accelerate the full offensive cyber operations lifecycle. They serve the U.S. military and Intelligence Community to deliver capabilities that counter adversaries at scale. This industrializes cyber warfare, transforming manual efforts into continuous operations across hundreds of targets.
Tech stack
GoReactTypeScriptAWSgraph databasesDockerKubernetesPythonGraphQLTerraformPostgreSQLGrafanaAshbyRustAnsibleGitHub ActionsJavaEvent-driven architectureLinuxBash
Open roles 38
Controller
Foundational Controller role building accounting, financial operations, and scalable systems from the ground up at a high-growth defense tech startup. Requires 8+ years accounting experience including Big 4 audit and government contracts.
Senior Accountant
First full-time Accounting hire responsible for owning accounting functions, building scalable financial processes, and preparing for future audits at a high-growth defense tech startup.
Controller
As the first Controller, you will lead the accounting department, developing internal systems, controls, and automated workflows. This role involves managing external partners, anticipating scalability requirements, and leveraging AI-native tools to build a modern and accurate finance function.
Strategic Finance and Business Operations Associate
Build and own financial models, run FP&A and budgeting, support fundraising, and drive operating cadence for a high-growth cybersecurity startup. Requires 1-5 years in IB/PE/strategic finance with strong modeling skills.
DevOps Engineer
DevOps Engineer responsible for designing, building, and operating AWS infrastructure using Terraform, CI/CD pipelines, and observability tools while collaborating with product and backend teams on reliability and security.
Staff Backend Engineer
Design and build backend systems processing real-time operational data for national security applications. Own architecture decisions, distributed systems, and engineering standards in a hybrid cloud/on-prem environment.
Backend Engineer
Build scalable Go backend services, high-performance APIs, and graph data models for real-time cyber and electromagnetic systems supporting national security missions.
Senior Backend Engineer
Build scalable backend services in Go for cyber and electromagnetic defense systems. Design high-throughput APIs, graph data models, and event-driven architectures on AWS to support mission-critical national security operations.
Staff Data Engineer
Lead data infrastructure for a national security tech company building a high-performance data lake and ETL pipelines for petabyte-scale cyber operations datasets. Requires 8+ years experience, strong data lake expertise, and proven technical leadership.
Mission Deployment Lead, Intelligence Community
Leads deployment and adoption of AI-native cyber software for Intelligence Community users, mapping mission workflows, training operators, and translating field feedback into product improvements. Requires 5+ years IC cyber operations experience and active TS/SCI with Full Scope Polygraph.
Senior Technical Recruiter
Owns full-cycle, sourcing-heavy recruiting for senior software engineers in New York, building pipelines, closing competitive talent, and establishing local engineering presence. Partners with engineering leaders on strategy and processes in a startup environment.
Technical Recruiter - Early Talent
Owns early career and full-cycle technical recruiting for software engineering roles at a defense tech startup. Builds campus pipelines, sources top talent via outbound and AI tools, partners with engineering leaders, and drives metrics for high-signal hires.
Talent Acquisition Coordinator
Coordinates interview scheduling, candidate communications, ATS data integrity, and talent operations reporting for high-volume engineering hiring. Uses AI and automation to scale processes while maintaining precision and supporting light sourcing.
Forward Deployed Site Reliability Engineer (TS/SCI Required)
On-site SRE ensuring reliability of mission-critical platform in air-gapped AWS environment for government customer. Defines SLOs, leads incident response, manages deployments with Docker/Terraform, and bridges operational feedback to engineering team. Requires 5+ years SRE experience and TS/SCI clearance.
Senior / Staff DevSecOps Engineer
Builds and owns security infrastructure including runtime security, IAM, secrets management, CI/CD hardening, and compliance for cloud/container environments. Embeds with engineering teams to enable secure-by-default development using AWS, Terraform, and policy-as-code tools. Requires 8+ years DevSecOps experience.
Senior Frontend SWE
Builds high-performance React/TypeScript interfaces for real-time cyber operation data visualization. Owns frontend features end-to-end, focusing on performance, testing, and collaboration in mission-critical environments. Requires 5-8 years experience.
Mission Architect
Serves as senior domain expert on product teams, translating operational workflows from cyber/intelligence domains into actionable requirements, user stories, and acceptance criteria. Partners with PMs, engineers, and designers to ensure products meet real-world user needs in high-stakes environments.
Senior Backend Engineer
Builds scalable backend services in Go for cyber and electromagnetic systems, handling real-time data with graph databases, event-driven architectures, and high-throughput APIs on AWS. Requires 5+ years experience, Go proficiency, and graph DB expertise.
Product Manager
Owns product vision and execution for mission-critical offensive cyber software, collaborating with engineers and operators to translate complex needs into roadmaps. Requires 4+ years building products in high-stakes environments with strong technical fluency.
Offensive Solutions Architect
Bridges elite offensive cyber operations expertise with AI-powered graph database products, translating operational workflows into technical requirements, designing mission workflows, and leading customer engagements for government IC missions.
Senior Forward Deployed Analyst
Serves as SME bridging cyber operations and engineering, translating operational needs into technical specs for AI-powered graph database tools. Conducts DNEA analysis, validates systems, and engages customers; requires 10+ years in gov cyber ops.
Principal Offensive Cyber Research Engineer
Leads offensive cyber research program, defining technical vision, architecting adversary emulation and attack automation systems, mentoring engineers, and advising executives and government stakeholders on strategy and risks. Requires 8-12 years in offensive operations, red teaming, and software development.
Offensive Cyber Research Engineer
Leads development of advanced offensive cyber capabilities, attack path frameworks, and threat emulation tools. Mentors engineers, conducts research on adversary TTPs, and integrates threat intelligence with 6-8 years experience in DNEA/EA operations and red teaming.
Backend Engineer
Builds scalable backend services in Go for cyber and electromagnetic systems, handling real-time data ingestion, graph modeling, event-driven architectures, and high-throughput APIs on AWS for national security applications. Requires 3+ years experience and strong Go proficiency.
Staff Data Engineer - TS/SCI Cleared
Leads development of high-performance data lakes and ETL pipelines for petabyte-scale cyber operations data. Partners with engineers and analysts to build reliable data systems, drives technical initiatives, and mentors team members. Requires 8+ years experience and TS/SCI clearance.
Staff Frontend SWE
Leads frontend architecture for high-performance React/TypeScript UIs visualizing real-time cyber operation data. Mentors engineers, optimizes performance, and collaborates cross-functionally in mission-critical environments. Requires 8+ years experience.
Applied AI Engineer
Builds and deploys language model-powered systems for cyber national security applications, including fine-tuning LLMs, RAG systems, and production inference. Requires 4+ years ML experience, Python/PyTorch proficiency, and LLM post-training expertise.