Senior Core Engineer

The browser has become the main productivity tool for employees due to driving trends like working remotely, BYOD, and web-based SaaS applications.

At Seraphic, we are revolutionizing browser security. Our patent-pending technology offers unmatched protection against zero-day attacks, phishing, and malicious downloads. By operating at the core of the browser, we provide comprehensive visibility and control, preventing data loss and leakage.

Why Seraphic?

• Cutting-Edge Protection: Full defense against all browser threats.
• Seamless Access: Browse internal sites and private applications directly from your browser without a VPN or a remote desktop
• Innovative Environment: Be part of a team leading the cybersecurity frontier shaping the modern solutions impacting billions of users.
• Challenging Technologies: Engage with a rich SaaS app, high-scale backend processing millions of requests, and a core networking solution, all with the highest level of security
• Innovation and Leadership: Leverage our patented technology and leadership recognition, such as Frost & Sullivan's 2024 Enabling Technology Leadership Award for Global Zero Trust Browser Security
• Collaboration and Team: Work with industry experts in a collaborative environment to solve complex problems
  
  

• Conduct in-depth research on vulnerabilities and cutting-edge exploitation techniques
• Design, develop, and maintain high-scale backend systems using Node.js
• Playing a key role in architectural and design decisions, building toward an efficient distributed architecture.
• Design, develop, and optimize core components using Native JavaScript and advanced frameworks
• Work extensively with the V8 JavaScript engine, customizing and enhancing its performance
• Develop and implement sophisticated exploit strategies to address complex cybersecurity challenges
• Explore innovative solutions for integrating security features into the core product
• Design and implement high-availability applications leveraging networking technologies
• Research and develop advanced methodologies for vulnerability discovery and exploitation
• Participate in architectural decisions to shape the evolution of the product
• Conduct research and develop proof of concepts (POCs) for new methodologies and technologies
• Solve challenging issues related to the performance and scalability of core systems
• Implement and optimize networking-based solutions, including advanced proxy communication capabilities
• Develop secure and efficient backend services that handle encryption and complex agent-to-client communication
• Work across cloud (AWS, GCP, Azure) and on-premises environments to deliver scalable and secure solutions
• Collaborate with cross-functional teams to build high-availability applications using networking technologies
• Write well-designed, testable, efficient code
  
  

• 5+ years of development experience, preferably with Cyber Security products
• Strong expertise in JavaScript, particularly with Native JavaScript development.
• Hands-on experience with the V8 JavaScript engine, including an understanding of its internals
• Proven ability to conduct vulnerability research and develop exploitation techniques
• Knowledge of security concepts, encryption, and secure communication practices
• Experience in designing and implementing high-availability applications based on networking technologies
• Proven ability to solve complex problems related to low-level programming and system internals
• Strong research skills, with a passion for exploring a technical boundary
• Self-motivated, detail-oriented, and capable of working independently
• Proven experience in building backend micro-services using modern technologies (Node.js/Python/Rust), preferably in high-scale
• Understanding of networking concepts, including high-availability applications and communication protocols
• Hands-on experience with proxy development and integrating backend systems with client-side agents
• Familiarity with encryption mechanisms and secure communication practices in cybersecurity
• Experience with cloud platforms (AWS, GCP, Azure) and on-premises infrastructure
• Experience with Elasticsearch, proffered ELK
• Experience with microservices architecture
• Working with Message Queues such as RabbitMQ and Kafka
• Working with backend frameworks such as NestJS
• Experience in real-time system development for ingesting large amounts of data
• Ability to Understand System Architecture
• Highly motivated and self-learner. Strong interpersonal and organizational skills
• B.Sc. Computer Science/Engineering or equivalent knowledge
  
  

• Background in cybersecurity or experience with EDR systems
• A start-up working experience, preferably in early stages
• Experience with C++
• Experience with developing self-contained and containerized applications using Kubernetes
• Browser extension development experience
• Electron framework development experience