Fenrir Security Private Limited
https://fenrir-security.com/About
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Jobs at Fenrir Security Private Limited
Job Title: Founding Engineer / Senior Full Stack Developer (Electron + AI Platform)
Location: Mumbai
Type: Full-time
Compensation: ₹17–20 LPA + 0.4% Equity (ESOP Pool)
Role Overview
We’re hiring a Founding Engineer / Senior Full Stack Developer to help us build an advanced desktop application designed for secure, intelligent, and autonomous workflows. You’ll be one of the first engineering hires and play a critical role in owning the entire product engineering stack—from interface to system orchestration.
This is a high-ownership role for someone who thrives in early-stage environments, enjoys building performance-focused desktop systems, and wants to work at the cutting edge of AI-enabled automation.
What You’ll Work On
- Architect and build a high-performance Electron-based desktop application
- Develop intelligent frontend workflows using React 18, TailwindCSS, and TypeScript
- Build scalable backend services in Node.js 20 with support for secure tool orchestration
- Integrate with external systems like CLI tools, terminal processes, file systems, and MCP-like interfaces
- Build efficient local storage, memory, and prompt-pipeline management systems
- Work on token and session lifecycle, agent command execution, and sandboxed operations
- Ship cross-platform (Windows & macOS) builds using Electron and Vite pipelines
Tech Stack
You should already be comfortable with most of the following:
- Frontend: React 18, Tailwind CSS, TypeScript, Vite
- Backend: Node.js 20, Express.js, CLI process spawning, OS-level scripting
- Desktop: Electron 25, IPC communication, Electron Forge/Builder, native packaging
- AI/Agent Integration: REST APIs to LLMs (Claude, GPT, etc.), prompt engineering, token/tokenizer management
- System-Level: File system manipulation, workspace persistence, multi-threaded job handling
- Tool Control & Integration: Interfacing with command-line tools (MCP-like integrations), automated I/O
- Other: GitHub Actions, secure storage, error logging, telemetry pipelines
What We’re Looking For
- 4+ years of full stack development experience with real-world Electron app delivery
- Strong proficiency in JavaScript/TypeScript (ES6+), including bundling and module systems
- Production-level experience with React and managing state in large apps
- Deep understanding of backend architecture, async task management, and secure file handling
- Ability to work independently in a fast-paced early-stage environment
- Comfortable with cross-platform builds (Windows & macOS)
- Bonus: Experience with embedded AI assistants, autonomous agent frameworks, or toolchain orchestration
What We Offer
- Competitive salary: ₹17–20 LPA
- 0.4% equity via ESOP pool (with early joining incentives)
- High autonomy and strategic influence—work as a true co-creator
- Remote-friendly and async collaboration culture
- Opportunity to build a developer-first product from scratch with real AI depth
Machine Learning (ML)Project Overview
Be part of developing "Fenrir Security" - a groundbreaking autonomous security testing platform. We're creating an AI-powered security testing solution that integrates with an Electron desktop application. This contract role offers the opportunity to build cutting-edge autonomous agent technology for security testing applications.
Contract Details
- Duration: Initial 4-month contract with possibility of extension
- Work Arrangement: Remote with regular online collaboration
- Compensation: Competitive rates based on experience (₹1,00,000-₹1,80,000 monthly)
- Hours: Flexible, approximately 40 hours weekly
Role & Responsibilities
- Develop the core autonomous agent architecture for security testing
- Design and implement the agent's planning and execution capabilities
- Create natural language interfaces for security test configuration
- Build knowledge representation systems for security testing methodologies
- Implement security vulnerability detection and analysis components
- Integrate autonomous capabilities with the Electron application
- Create learning mechanisms to improve testing efficacy over time
- Collaborate with security expert to encode testing approaches
- Deliver functional autonomous testing components at regular milestones
- Participate in technical planning and architecture decisions
Skills & Experience
- 3+ years of AI/ML development experience
- Strong background in autonomous agent systems or similar AI architectures
- Experience with LLM integration and prompt engineering
- Proficiency in Python and relevant AI/ML frameworks
- Knowledge of natural language processing techniques
- Understanding of machine learning approaches for security applications (preferred)
- Ability to work independently with minimal supervision
- Strong problem-solving abilities and communication skills
Why Join Us
- Work at the cutting edge of AI and cybersecurity technology
- Flexible working arrangements and competitive compensation
- Opportunity to solve novel technical challenges
- Potential for equity or profit-sharing in future funding rounds
- Build portfolio-worthy work in an innovative field
Selection Process
- Initial screening call
- Technical assessment (paid task)
- Final interview with founder
- Contract discussion and onboarding
Project Overview
Join an exciting early-stage project developing "Fenrir Security" - an innovative autonomous security testing platform. We're building an Electron-based desktop application that leverages AI to automate security testing processes. This is a contract position with potential for long-term engagement as the product evolves.
Contract Details
- Duration: Initial 4-month contract with possibility of extension
- Work Arrangement: Remote with regular online collaboration
- Compensation: Competitive rates based on experience (₹80,000-₹1,50,000 monthly)
- Hours: Flexible, approximately 40 hours weekly
Role & Responsibilities
- Design and develop a cross-platform Electron application from scratch
- Implement both frontend UI components and backend functionality
- Create integration points for the autonomous testing engine
- Build secure communication protocols between application components
- Develop data visualization components for security testing results
- Implement application packaging and distribution mechanisms
- Work collaboratively with AI/ML specialist and security expert
- Deliver working application builds at regular milestones
- Participate in technical planning and architecture decisions
Skills & Experience
- 3+ years experience building production applications
- Strong proficiency with Electron framework development
- Expertise in JavaScript/TypeScript, HTML/CSS, and Node.js
- Experience with modern frontend frameworks (React preferred)
- Working knowledge of desktop application development challenges
- Familiarity with security tools and applications (preferred)
- Ability to work independently with minimal supervision
- Strong problem-solving abilities and communication skills
Why Join Us
- Work with cutting-edge technologies at the intersection of AI and cybersecurity
- Flexible working arrangements and competitive compensation
- Opportunity to shape a product from its foundation
- Potential for equity or profit-sharing in future funding rounds
- Build portfolio-worthy work in an innovative security product
Selection Process
- Initial screening call
- Technical assessment (paid task)
- Final interview with founder
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