Design and implement security controls across applications, cloud infrastructure, and development environments.
Conduct architecture reviews, threat modeling, and security assessments for new products.
Identify, prioritize, and remediate vulnerabilities across the technology stack.
SignalFire partners with top early-stage startups that are shaping the future of technology. They have a portfolio of over 200 innovative companies across AI, cybersecurity, healthtech, fintech, developer tools, and enterprise SaaS.
Contribute to the design, development, and operation of core components of Abnormal’s data platform.
Build tools and services that make it easy for other teams to adopt and scale data systems.
Help automate infrastructure and operations to improve reliability, performance, and scalability.
Abnormal protects the humans behind the world's most critical organizations from AI-powered cybercrime. 4,500+ enterprises trust our behavioral AI platform.
Build and harden secure CI/CD pipelines with security gates to catch issues before production.
Lead security architecture reviews and threat models for Kubernetes-based workloads on GCP and AWS.
Harden container images, Kubernetes configurations, and cloud IAM to minimize attack surface.
Chainguard is the trusted source for open source, delivering hardened, secure, and production-ready builds of open source software. The company is venture-backed by leading investors and serves Fortune 500 enterprises, with a culture that values customer obsession, intentional action, and trust.
Turn developer, agent, and security problems into clear requirements, staged technical decisions, and measurable outcomes.
Design, build, and operate Go services and APIs that power Docker's build and secure-CI infrastructure.
Develop isolation, identity, policy, provenance, attestation, and signing capabilities for trusted build and test jobs.
Docker is a leading developer tooling platform trusted by over 20 million monthly users and 20 billion container image pulls. They are a globally distributed, remote-first team building tools that define how software gets built and delivered.
Deliver on business-critical outcomes by owning backend and data services end-to-end, from design to production operation.
Design, build, and operate scalable data pipelines and streaming ingestion for high-volume security telemetry.
Contribute to data modeling and warehouse/lakehouse architecture decisions that serve detection, analytics, and product features.
Blackpoint Cyber is the leading provider of world-class cybersecurity threat hunting, detection and remediation technology. Founded by former National Security Agency (NSA) cyber operations experts, the company is in hyper-growth mode, fueled by a recent $190m series C round.
Diagnose and resolve customer-reported issues quickly, from investigation through durable fix.
Deliver high-quality engineering work that improves platform reliability and directly addresses customer needs.
Partner closely with Customer Success to align on technical solutions and maintain backend systems, APIs, and data pipelines.
VulnCheck is The Exploit Intelligence Company, delivering structured exploit intelligence for exploitation prevention. Founded in 2021, the company has a transparent, collaborative, and supportive culture with a team of cybersecurity experts.
Build and maintain backend services for our LLM gateway, including routing, rate limiting, and observability.
Contribute to sandboxing and isolation infrastructure for safe agent-generated code execution.
Write high-performance backend code in Go, Rust, or async Python, supporting Kubernetes-based platform services.
AZX accelerates positive impact in critical industries through AI transformation. Founded in 2024 and profitable from the start, we work with category leaders in real estate, energy, logistics, and utilities.
Shape the future of Reddit by adapting platforms to evolving privacy, security, and regulatory landscapes.
Partner with product, design, and engineering teams to build trusted, compliant experiences for millions of users.
Own product areas end-to-end from technical design to launch, influencing technical and product strategy.
Reddit is a community of communities built on shared interests and authentic conversations. With over 100,000 active communities and approximately 130 million daily active users, Reddit is one of the largest sources of information on the internet.
Own the technical strategy for multi-ecosystem scaling, defining architecture for onboarding new language ecosystems.
Drive end-to-end remediation automation, leading redesign of CVE workflows to close the loop from detection to verified release.
Set platform-wide technical direction spanning package index, build pipelines, and orchestration tooling to serve customers and ecosystem teams.
Chainguard is the trusted source for open source, delivering hardened, secure, and production-ready builds of open source software. They serve Fortune 500 enterprises and global industry leaders, and are venture-backed by leading investors, fostering a culture of customer obsession and intentional action.
Design, build, and maintain scalable distributed backend systems powering platform and product capabilities.
Own backend services end-to-end, from architecture to monitoring, while collaborating with product and engineering peers.
Build and evolve Web3 platform backend components, including protocol integrations and blockchain network support.
Zerion builds backend systems for Web3 infrastructure, powering API and wallet products trusted by 50+ top crypto brands. They have a fully remote team with strong ownership and high code quality, processing over 3.1B requests and supporting 1.7M+ active funded wallets.
Design, build, and maintain scalable cloud-native backend services using Golang within a modern microservices architecture.
Develop and operate distributed systems deployed on Kubernetes across major cloud platforms such as AWS, Google Cloud Platform, or Microsoft Azure.
Lead the architecture, design, and implementation of new product features and backend services from concept through production.
A fast-paced, remote-first engineering company building scalable cloud-native platforms for enterprise applications. The team is collaborative, transparent, and mission-driven, with a focus on impactful technology.
Lead a backend engineering team focused on building and scaling microservices, data pipelines, and APIs for a critical cybersecurity platform.
Mentor engineers and champion technical vision, ensuring reliability, scalability, and production-grade development.
Collaborate cross-functionally with product and engineering leadership to translate objectives into scalable solutions.
This position is listed on behalf of a partner company, which manages all applications and next steps. The environment is remote-first, mission-driven, and highly collaborative, with teams working across multiple regions.
You will build and scale high-performance backend services using Go, including event-driven systems and REST/gRPC APIs.
You will design and optimize database schemas for large-scale multi-tenant identity workloads.
You will collaborate with cross-functional teams to deliver quarterly key results and ensure operational reliability.
Abnormal AI is an AI-native security platform protecting enterprises from cyber attacks using behavioral AI. Trusted by over 2,500 enterprises (including 25% of Fortune 500), it processes billions of identity signals daily and has a culture of innovation.
Develop processes, tooling and automation to scale incident management response and mitigate risks.
Collaborate with security, engineering, product, support, and business operations to identify detection use cases.
Maintain security logging platform and stay updated on threats to improve detection mechanisms.
ClickHouse is a leading real-time analytics, data warehousing, observability, and AI workloads company with over 4,000 customers and rapid growth, validated by a $400M Series D funding round. The company values innovation and collaboration, offering a remote-friendly culture with a global team.
Design, build, and deploy production systems with focus on scalability, reliability, and security.
Develop and maintain automation to streamline operations and eliminate toil.
Proactively monitor systems and implement automated incident response to minimize downtime.
Arista Networks is an industry leader in data-driven networking for large data centers, campus, and routing. With over $8 billion in revenue and a culture valuing diversity, Arista is a Great Place to Work for Best Engineering Team and Best Company for Diversity.
Build, operate, and improve Elastic Build, a Kubernetes-based pipeline for producing production-ready artifacts.
Design and implement automation for package rebuild and review workflows while maintaining human oversight.
Develop monitoring, dashboards, alerting, and automated remediation to reduce operational toil and detect issues early.
Chainguard provides hardened, secure, and production-ready builds of open source software. The company is venture-backed by leading investors and serves Fortune 500 enterprises and global industry leaders, fostering a remote-first culture with values of customer obsession, intentional action, and trust.
Resolve customer-reported issues quickly and thoroughly, from investigation through to a durable fix.
Diagnose complex, ambiguous problems across services and data pipelines, tracing them to root cause.
Deliver high-quality engineering work that improves the platform and directly addresses customer needs.
VulnCheck delivers structured exploit intelligence on what is actively weaponized in the wild, purpose-built for data lakes, ETL pipelines, automation, and AI workflows. Founded in 2021, the company has a transparent, collaborative, and supportive culture with a team of cybersecurity experts.
Design and deliver solutions for cloud-hosted production infrastructure, including CI/CD pipelines and automation.
Shape development and deployment of mission-critical enterprise software using optimized and automated CI/CD pipelines.
Design, build, and support cloud infrastructure and security technologies for resiliency, observability, and cost optimization.
Ping Identity provides an intelligent cloud identity platform that enables secure and seamless digital experiences for users. The company serves more than half of the Fortune 100, has offices globally, and fosters a culture of digital freedom and respect for individuality.
Design, build, and operate production software systems.
Own significant technical projects from architecture through deployment.
Develop scalable services, APIs, infrastructure, and internal tooling.
The company builds sophisticated infrastructure and software systems. It is a rapidly scaling technology company that values ownership and technical excellence.
Build and operate Go backend services for key management and signing at scale.
Design and implement cryptographic recovery and trust models for non-custodial wallets.
Work with external auditors, Kubernetes, and distributed systems in a security-critical environment.
Offchain Labs builds the Arbitrum stack, the leading Ethereum scaling solution. They are a well-funded company with $124 million in backing, a small but high-ownership team, and a culture of security-first engineering and collaborative review.