Senior JavaScript Engineer

2 days ago

Tel Aviv, Tel Aviv, Israel HUMAN Full time ₪120,000 - ₪360,000 per year

HUMAN's Bot Defender is a market leading product designed to safeguard online platforms and digital assets from automated bot attacks. 

At HUMAN, our Sensor team is at the forefront of protecting online platforms by distinguishing real users from sophisticated bots. Our JavaScript-based sensor is a critical component of HUMAN's detection capabilities, gathering high-fidelity signals from browsers and devices to help secure digital ecosystems at scale.

We are seeking an experienced engineer to join the Sensor team in pushing the boundaries of real-time, client-side JavaScript development.

Responsibilities:

  • Drive the design, development, and optimization of advanced JavaScript techniques to collect signals (user behavior, device characteristics, browser APIs) securely and efficiently.

  • Own the full code lifecycle: architecture, development, deployment, monitoring, and continuous improvement.

  • Guide the team's technical direction, balancing innovation with stability and scalability.

  • Lead, mentor, and grow a team of talented core JavaScript engineers focused on building detection sensors that operate across diverse browsers and devices.

  • Collaborate closely with Product, Research, Security, and Engineering teams to align technical execution with broader product goals.

Qualifications:

  • 3+ years of hands-on software development experience, with deep expertise in vanilla JavaScript and browser internals.

  • Strong understanding of web security concepts, browser APIs, and the nuances of cross-platform development.

  • A JavaScript enthusiast who enjoys being hands-on: reviewing code, setting architecture and contributing to complex solutions.

  • Excellent communication and collaboration skills, with the ability to work effectively across disciplines.

  • Passionate about performance, security, and crafting elegant technical solutions.

Nice to have:

  • Experience with typed backend languages (e.g., Go, Java).

  • Familiarity with content delivery networks (CDNs) and large-scale deployment strategies.

  • Background in cybersecurity, bot mitigation, or fraud prevention technologies

    Join us and lead the team that powers the intelligence behind HUMAN's defense against online threats — helping to keep the internet human.

About HUMAN Security

HUMAN was founded in a Brooklyn sci-fi bookstore with a hacker mindset and the lofty mission of making the internet safer by putting humans first. Today, our Human Defense Platform safeguards enterprises from sophisticated bots, fraud, and account abuse, verifying the humanity of more than 20 trillion interactions per week for the world's biggest brands and internet platforms.

HUMAN is an equal opportunity workplace dedicated to protecting the internet's integrity for everyone. We believe in putting people first, embracing diversity of thought from our global teams, and welcoming all individuals to share their unique experiences as we fight cybercrime together. We support our Humans with a comprehensive total rewards package for personal and professional development, including well-being and learning stipends, flexible work options, and dedicated time off. While our HQ is in NYC, we have teams worldwide.

HUMAN is growing fast, and there's never been a more meaningful time to join us. If you thrive on solving complex problems and want to help shape the future of cybersecurity, join us as we build a safer, more human internet.

If you are an individual with a disability or special need that requires accommodation, please contact us directly.

  • JavaScript Tech Lead

    2 days ago

    Tel Aviv, Tel Aviv, Israel HUMAN Full time ₪120,000 - ₪180,000 per year

    HUMAN's Bot Defender is a market leading product designed to safeguard online platforms and digital assets from automated bot attacks. At HUMAN, our Sensor team is at the forefront of protecting online platforms by distinguishing real users from sophisticated bots. Our JavaScript-based sensor is a critical component of HUMAN's detection capabilities,...

  • Senior Backend Engineer

    6 days ago

    Tel Aviv, Tel Aviv, Israel PAPAYA Full time ₪90,000 - ₪120,000 per year

    Get ready to join the action at Papaya, one of the world's fastest-growing mobile game powerhouses We're all about delivering fun and excitement to millions of players across our diverse range of games. The company is HQ in the heart of Tel Aviv.We seek a highly skilled Senior Backend Engineer to drive our infrastructure initiatives. This role involves...

  • Senior Backend Engineer

    6 days ago

    Tel Aviv, Tel Aviv, Israel PAPAYA Full time ₪90,000 - ₪120,000 per year

    Get ready to join the action at Papaya, one of the world's fastest-growing mobile game powerhouses We're all about delivering fun and excitement to millions of players across our diverse range of games. The company is HQ in the heart of Tel Aviv.We seek a highly skilled Senior Backend Engineer to drive our infrastructure initiatives. This role involves...

  • Senior Backend Engineer

    6 days ago

    Tel Aviv, Tel Aviv, Israel papaya Full time ₪90,000 - ₪120,000 per year

    Get ready to join the action at Papaya, one of the world's fastest-growing mobile game powerhouses We're all about delivering fun and excitement to millions of players across our diverse range of games. The company is HQ in the heart of Tel Aviv.We seek a highly skilled Senior Backend Engineer to drive our infrastructure initiatives. This role involves...

  • Senior Full Stack Engineer

    2 weeks ago

    Tel Aviv, Tel Aviv, Israel Sentra Full time ₪70,000 - ₪120,000 per year

    Sentra is the global leader in cloud-native data security for the AI era. The company's mission is to empower organizations to confidently scale their data operations across multi-cloud and on-premises environments while leveraging the power of AI without compromising security.Sentra's unique approach enables enterprises to autonomously scan their...

  • Senior Frontend Developer

    6 days ago

    Tel Aviv, Tel Aviv, Israel Kela Technologies Full time ₪120,000 - ₪180,000 per year

    We are a new stealth mode defense tech startup, specializing in developing a new generation of data infrastructure and command & control systems, helping the world's leading nations access the futuristic battlefield. We were founded a few months ago and raised a significant seed round of tens of millions of dollars, led by Sequoia and other top-tier...

  • Senior Full Stack Engineer

    2 days ago

    Tel Aviv, Tel Aviv, Israel DoorLoop Full time ₪120,000 - ₪180,000 per year

    About DoorLoopDoorLoop is property management software built for speed and the smart choice for people who take growth seriously. With offices in Miami, New York City, and Tel Aviv, we're a global company helping property owners and managers move faster, scale smarter, and get real support, real fast.We're proudly People First. That's why we're a Certified...

  • Senior Full Stack Engineer

    2 days ago

    Tel Aviv, Tel Aviv, Israel DoorLoop Full time ₪120,000 - ₪180,000 per year

    About DoorLoopDoorLoop is property management software built for speed and the smart choice for people who take growth seriously. With offices in Miami, New York City, and Tel Aviv, we're a global company helping property owners and managers move faster, scale smarter, and get real support, real fast.We're proudly People First. That's why we're a Certified...

  • Senior Full Stack Engineer

    2 weeks ago

    Tel Aviv, Tel Aviv, Israel NoTraffic Full time ₪104,000 - ₪130,878 per year

    Join the future of mobility. Help build the platform that's changing how cities move.NoTraffic is the world's leading mobility platform, transforming intersections into connected infrastructure that improves flow, boosts safety, and prepares cities for the autonomous era.We're looking for a Senior Full-Stack Developer to join us at a pivotal moment of...

  • Senior Full Stack Engineer

    6 days ago

    Tel Aviv, Tel Aviv, Israel Theator Full time ₪120,000 - ₪180,000 per year

    BackgroundAt Theator, we're redefining the future of surgery. Our cutting edge computer vision and best in class AI enrich every step of care—from training and research to live insights in the OR, automatic postoperative notes, smarter billing, and intelligent content management. Trusted by leading hospitals worldwide, we are creating a data driven...