Senior Core Engineer

Description

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 

This is an exciting opportunity to join a fast-growing start-up company, consisting of talented team players, with the best-of-breed solution revolutionizing browser security. 

Join us in shaping the future of secure browsing! 

What you'll do: 

• 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 

Requirements

 What you’ll bring with you: 

• 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 

Nice to have but not a must: 

• 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