Senior Software Engineer, Full-Stack – Security Platform

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Vannevar Labs

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2019

💼 Consulting

📦 Logistics

🎖️ Defense

💰 $12M Series A on 2021-08

Consulting • Logistics • Defense

Vannevar Labs is a defense technology company focused on digital intelligence to support non-kinetic missions aimed at deterring and de-escalating conflicts. The company specializes in developing advanced machine learning techniques to ensure access to mission-relevant data, building tools to counter malign influence, and enhancing maritime domain awareness using open-source and targeted data collection techniques. Vannevar Labs is dedicated to quickly iterating with national security partners to meet urgent and dynamic security challenges, positioning its solutions to address the strategic competition for legitimacy and influence in the modern geopolitical landscape.

📋 Description

• Build and scale Vannevar’s centralized authentication and authorization platform, including tenant isolation across customer environments—from development through classified deployments. • Own the internal self-service platform for user, group, and permission management; partner with Design to deliver intuitive administrative experiences for developers and mission teams. • Build tooling and visualizations that help developers, administrators, and mission users understand and validate access permissions. • Own and evolve Vannevar’s platform management interfaces, including the feature flag system, to support new products and customer needs. • Partner with product engineering teams to build shared authorization and resource-sharing capabilities across the platform. • Shape the long-term roadmap for the Security Platform team by driving scalable platform capabilities and improving the developer experience.

🎯 Requirements

• 7+ years of software engineering experience, with a strong track record of designing, building, and operating scalable backend systems, and delivering full-stack features from conception through production. • Strong backend expertise, including proficiency in one or more modern backend languages (e.g., Python, Java), experience with relational databases (e.g., PostgreSQL), distributed systems, and API design. • Comfortable owning end-to-end development, including frontend work (e.g., React/TypeScript/Node.js) when needed, with a focus on delivering polished, customer-facing experiences rather than specializing exclusively in backend infrastructure. • Strong product intuition, with the ability to make pragmatic technical decisions, balance user needs with engineering tradeoffs, and thrive in ambiguous, fast-moving environments. • Experience with identity and authentication concepts and platforms, including OAuth 2.0, OpenID Connect (OIDC), SAML, JWTs, session management, RBAC/ABAC, SSO, Keycloak, OpenFGA, or other authentication and authorization systems. • Excellent cross-functional collaboration and communication skills, with experience partnering closely with product, design, security, and infrastructure teams, driving technical direction, and aligning stakeholders through ambiguity. • Nice to have: Active Security clearance or ability to obtain one and desire to travel to visit users, collect feedback, and debug issues; Prior experience working in a user-facing product role.

🏖️ Benefits

• Health, dental, and vision insurance • Remote friendly with WeWork access • Unlimited PTO, shared downtime during the federal holiday calendar, and company-wide off time at the end of each year • 401(k) match • Lifestyle & wellbeing stipends • Salary top-up during military reserve duty • Fully paid parental leave • Child and pet care reimbursement during travel