Senior Full Stack Engineer

Company Overview

At Backline, we are building the world's first autonomous remediation platform - AI agents that don't just find vulnerabilities, they fix them. At scale. Seamlessly integrated into existing workflows, these agents act as tireless virtual engineers, analyzing code and configurations, generating safe changes, and pushing verified fixes - autonomously.

The shift we offer is transformative: vulnerabilities vanish in hours instead of months, human teams are freed from endless fire drills, and organizations move from reactive defense to true resilience. Security backlog - a chronic industry pain point - will become a thing of the past.

We have recently closed a significant Seed round led by StageOne Ventures, Gradient and Evolution Equity Capital. Our office is located at the Bursa in Ramat Gan, with a hybrid work model.

Position Overview

Backline is seeking a skilled Full-Stack Software Engineer to join our team and take ownership of building robust, user-centric web applications and the scalable backend services & AI Agents that power them. This role is perfect for someone who thrives in a collaborative B2B environment and is ready to lead development initiatives across the entire stack, while working closely with product and design teams.

Key Responsibilities

• Develop, maintain, and own scalable backend services in Go to power our web applications.
• Design and implement secure, high-performance RESTful APIs.
• Collaborate with product managers and designers to translate requirements into full-stack technical solutions.
• Develop and maintain high-quality, responsive frontend applications using React.
• Work with relational and NoSQL databases, including schema design, query optimization, and data modeling.
• Tackle tough problems and design creative solutions to solve them.
• Participate in code reviews and maintain high coding standards across the entire codebase.
• Optimize application performance for both frontend and backend systems.
• Take ownership of technical debt management and architecture decisions for new features.

Qualifications

• 4+ years of hands-on, end-to-end software development experience.
• Strong backend development experience in Go, or a similar language such as C#, Java, or Python.
• Deep understanding of backend concepts including API design, data modeling, authentication, authorization, and caching.
• Hands-on experience with databases (e.g., PostgreSQL, MongoDB, Redis).
• Proven experience building and maintaining web applications using React.
• Modern JavaScript/TypeScript expertise with ES6+ features and type-safe development.
• Strong CSS and Tailwind CSS proficiency including responsive design and modern CSS features.
• Testing experience with unit, integration, and end-to-end testing frameworks.
• Clear communication, product mindset, and ability to partner with cross-functional teams in a startup environment.
• Bachelor's degree in Computer Science, Engineering, or related field - or equivalent practical experience.

Advantages

• Background in cybersecurity, or network/cloud security products.
• Experience with microservices architecture and containerization (Docker, Kubernetes).
• Experience with monorepo tools like NX, Lerna, or similar.
• Basic DevOps knowledge, including CI/CD and cloud platforms (AWS, GCP, Azure).
• Proven 0→1 experience in an early-stage startup.
• Experience integrating AI technologies into applications.

Work Environment

Join a well-funded startup building cutting-edge AI security tools. You'll have significant technical ownership, work with the latest AI technologies, and help build an engineering culture in a collaborative, growth-focused environment. Expect:

• Becoming a part of a well-funded startup, collaborating with an experienced team and seasoned leaders.
• High-impact, 0-to-1 work across platform and product
• Clear growth path into technical leadership as the team scales
• A flexible and inclusive environment, supported by a diverse, fun and exceptional team