Senior Backend Engineer



Software Engineering
Ramat Gan, Israel
Posted on Monday, June 3, 2024

Senior Backend Engineer

  • R&D
  • Ramat Gan, IL
  • Full-time


The Data Group is responsible for the data and algorithms which fuel ActiveFence’s ability to fight online evil at scale. With the continuous and accelerated expansion of online threats we are seriously scaling up our operation to deal with an ever more complex online landscape. If you love varying challenges, can move fast, and are not afraid of tackling uncharted territories with your code, you might be a good fit here. We're looking for a Data Engineer to take our mission to the next level, at scale.

The team

You’ll be joining a collaborative and inclusive team of Data Scientists and Engineers. We love thinking together, building great products together, and having a good time together. It’s important for us that each team member grows and evolves while providing a significant impact on our product and our clients.

Primary Responsibilities

We are looking for a data engineer who will collaborate with fellow developers and data scientists, build out our data infrastructures and pipelines, and take our models and algorithms to production at scale.

  • Take a major part in designing and implementing complex systems, data pipelines and algorithms
  • Take machine and deep learning models to production, affecting millions of requests at scale
  • Participate in code reviews, design reviews, and Agile rituals
  • Explore new technologies and enrich other team members with your knowledge
  • Use best practices to write clean, maintainable code, and create a high performant, delightful experience for customers
  • Find the bad guys, feel proud, inspire your team to do the same


  • Python
  • TensorFlow, Pytorch, Onnx, MLFlow
  • K8s, AWS
  • Spark, Kafka, AirFlow
  • Mongo, Redis, OpenSearch, dynamoDB
  • TypeScript, Nodejs, Scala


Skills and Qualifications:

  • BSc degree in Computer Science, a related technical field of study, or equivalent practical experience.
  • 7+ Years of experience in server side development
  • Proven experience with Pyhton
  • TypeScript, Nodejs, Scala - advantage
  • Experience with large scale production systems and pipelines.
  • Worked with Big Data technologies such as Spark, Kafka, Hadoop, HDFS
  • Worked with ML frameworks, algorithms and MLOps
  • Built microservices and the architecture around them
  • Participated in agile practices and SaaS development
  • Self learner, independent, and a team player with great communication skills.

You’ll be a great fit if:

  • You’re energetic and love data
  • You are proactive, enjoy taking full ownership of your deliverables, and have a can-do approach
  • You’re curious and always eager to learn more, no matter what level you’re at
  • You’re a team player with great interpersonal skills
  • You’re passionate about preventing online harm

About ActiveFence

ActiveFence is the leading tool stack for Trust & Safety teams, worldwide. By relying on ActiveFence’s end-to-end solution, Trust & Safety teams – of all sizes – can keep users safe from the widest spectrum of online harms, unwanted content, and malicious behavior, including child safety, disinformation, fraud, hate speech, terror, nudity, and more.

Using cutting-edge AI and a team of world-class subject-matter experts to continuously collect, analyze, and contextualize data, ActiveFence ensures that in an ever-changing world, customers are always two steps ahead of bad actors. As a result, Trust & Safety teams can be proactive and provide maximum protection to users across a multitude of abuse areas, in 70+ languages.

Backed by leading Silicon Valley investors such as CRV and Norwest, ActiveFence has raised $100M to date; employs 300 people worldwide, and has contributed to the online safety of billions of users across the globe.