Jobs at Twenty

Own frontend architecture for mission-critical React and TypeScript applications that visualize complex cyber operation data in real time. Lead UI technical direction, build interactive visualization systems, establish reusable component patterns, improve performance and reliability, and mentor engineers. Collaborate with product, design, backend, and operations teams to deliver secure, scalable capabilities for cloud and on-premises environments.

Build and operate production data integrations and ETL pipelines using AWS Glue, PySpark, Python, SQL, and ClickHouse. Responsibilities include designing schemas, integrating unfamiliar data sources, monitoring pipeline health, debugging incidents, improving observability, supporting restricted-environment deployments, and participating in on-call operations. The role collaborates with forward-deployed engineers and requires full-time onsite work in New York City, occasional travel to Arlington, and eligibility for a U.S. government security clearance.

Design and build high-throughput backend services for real-time operational data across cloud and on-premises environments. Lead architecture and technical execution for distributed, event-driven systems; define APIs; improve testing, code review, CI/CD, observability, and incident practices; troubleshoot production issues; mentor engineers; and partner with product, operations, and frontend teams to deliver secure, reliable capabilities.

Build scalable backend services in Go for cyber and electromagnetic operations. Design high-performance APIs, graph data models, event-driven systems, and AWS microservices across cloud and on-premises environments. Develop automated tests, CI/CD pipelines, and secure, resilient production systems while collaborating with cyber operators, product teams, and frontend engineers.

Build high-performance React and TypeScript interfaces for real-time cyber operation data. Responsibilities include frontend architecture, interactive visualizations, automated testing, performance optimization, reliability improvements, code reviews, and cross-functional collaboration. The role owns significant features end to end and supports other engineers while delivering secure, accessible software for cloud and on-premises environments.

Own and evolve security infrastructure across AWS, containers, IAM, secrets management, incident response, compliance, and CI/CD. Build secure-by-default templates, policy-as-code, vulnerability management, automation, and developer-facing security tooling. Lead compliance evidence and remediation, harden cloud and delivery environments, and provide practical security guidance. The role also helps shape the DevSecOps function and contributes to hiring as the organization grows.

Designs, operates, and improves AWS infrastructure and application platforms using Terraform and deployment automation. Owns CI/CD, observability, reliability, networking, security controls, secrets management, and operational readiness. Partners with application and backend teams on architecture and performance, manages production databases and messaging systems, and documents platform practices and runbooks. This is an onsite role in New York City limited to U.S. citizens.

Lead the Data Marketplace engineering team, owning its technical roadmap, architecture, quality standards, delivery, and cross-team dependencies. Manage and develop engineers across frontend, backend, data, and infrastructure while partnering with Product. Guide development of secure, scalable marketplace, data, and platform capabilities, occasionally contributing hands-on to unblock delivery. Support hiring, coaching, and technical decision-making in a sensitive cybersecurity and government-focused environment.

Own the company’s accounting and financial operations as its first full-time accounting hire. Build scalable, audit-ready processes; implement and optimize financial systems; manage external accounting, tax, audit, vendor, and government partners; establish expense and procurement policies; and support finance, legal, HR, office, and other cross-functional initiatives. The role requires strong startup judgment, attention to detail, systems expertise, and process automation skills.

Owns accounting and financial operations as the company’s first full-time accounting hire. Responsibilities include building scalable, audit-ready processes; implementing and optimizing financial systems; managing tax, bookkeeping, vendor, government, and audit partners; developing expense and procurement policies; and supporting cross-functional finance, legal, HR, office, real estate, compensation, cash management, and contracting initiatives.

Lead a 0->1 marketplace product: run user discovery, define MVP, launch and iterate, design workflows for human and automated participants, drive roadmap with a small engineering team, measure and improve matching, and brief executive leadership.