Sr. Full Stack Developer

IRONSCALES is redefining email security with an AI-powered platform built to stop phishing and advanced email cyber threats at scale. Our cloud-native solution detects, analyzes, and remediates attacks in real time, helping organizations stay ahead of constantly evolving cyber threats without slowing down their teams. We're a fast-growing cybersecurity company driven by innovation, ownership, and a passion for solving hard problems. Our team builds cutting-edge technology used by organizations around the world to protect what matters most.

If you love building impactful products, solving complex challenges, and working with smart, driven people in a fast-paced startup environment. IRONSCALES is the place for you. Join us and help shape the future of email security 🚀

As a Full Stack Developer, you will play a pivotal role in both frontend and backend development.

You will own features end-to-end, from product requirements through backend logic, API design, and frontend UI, on our ML/AI-based IRONSCALES platform. Collaborate with UI/UX Designers, Product Managers, and Software Engineers to deliver compelling user-facing products while owning deployment and optimization of production code.

Furthermore, you will join our growing R&D team and be part of shaping how we build, not just what we build. Beyond delivering features, you will help evolve our development culture: improving our SDLC, integrating AI-assisted workflows and tooling, and building the kind of engineering environment where great software ships faster and with higher quality.

Core Responsibilities:

· Innovate and evolve IRONSCALES’ cutting-edge AI-powered Email security platform

· Collaborate with Product and Engineering teams to understand roadmap priorities

· Carry feature requirements from early phase to full implementation, from product spec through code, tests, and deployment

· Design and develop new capabilities in a dynamic and changing environment

· Build a high-performance and highly available platform and design new prototypes

· Write frontend code using React, TypeScript, shadcn, and Tailwind CSS

· Write Python code focused on scalability, testability, supportability and maintainability.

· Write and maintain E2E tests using Playwright alongside unit tests and backend tests

· Participate in architecture, code, security and operational reviews

· Design and build highly available and scalable platform UI API

· Assist in strategic planning of future features

· Develop the User Interface using responsive and adaptive web development strategies to support different screen resolutions (including mobile)

· Utilize and contribute to our core UI libraries

Requirements

· 8+ years of experience with Full Stack development using React and Python

· Strong proficiency with TypeScript

· Experience with React and modern data-fetching patterns

· Solid Python experience — Django or Litestar/FastAPI; async Python a strong plus

· Experience writing E2E tests and integrating them into CI pipelines

· Experience driving technical design decisions for highly scalable systems

· Experience developing Database solutions (PostgreSQL/Cassandra - advantage)

· Operating services and infrastructure in Cloud environments (AWS - advantage)

· Experience with component-driven development

· Passion for solving complex problems that haven't been solved before

· High proficiency with HTML, CSS, JavaScript, DOM, and its core principles

· High proficiency with RESTful APIs

· Experience designing frontend software architecture

· Understanding of SOLID principles

· Ability to carry requirements from early phases to full implementation

· Good self-management, analytical, and problem-solving skill