Senior Backend Engineer

AppsFlyer is known for its massive backend production. In any given second, our servers produce valuable insights from millions of incoming events, crunching user data, serving requests, and communicating at massive scale.

The EDP team manages high-volume, real-time user engagement data across a multi-cloud footprint, designing for low latency, massive scale, and rock-solid reliability.

Our systems route, enrich, and tailor responses for global distribution, optimizing at the edge to seamlessly serve dynamic traffic—processing millions of events per second.

We’re looking for a Senior Backend Engineer to help us evolve and scale our real-time incoming infrastructure. You’ll solve high-throughput, low-latency challenges and craft APIs used by some of the largest mobile apps in the world.

What you’ll do

• Design, build, and own real-time engagement services and APIs that are fast, reliable, and scalable.

• Evaluating architectural trade-offs (e.g., consistency vs. availability) in a distributed environment.

• Tackle complex problems in real-time, high-throughput systems using modern cloud-native tooling such as CDNs, WAF, Web Handlers, and Kafka

• Lead API design and implementation across systems – with a strong focus on security, scale, performance, and reliability

• Identify and resolve systemic bottlenecks that span multiple services or cloud regions.

• Collaborate with Product Managers and Engineers to shape product direction and deliver customer value

• Contribute to engineering excellence via code reviews, mentoring, and technical leadership

• Continuously evaluate and integrate new technologies to keep our stack modern and efficient

What you have

• 5+ years of backend development experience

• Proven expertise in designing, building, and scaling APIs for production environments

• Strong knowledge of server-side technologies, HTTP/gRPC, inter-service communication, and performance tuning

• Experience working with high-scale, low-latency distributed systems

• Hands-on experience with cloud infrastructure (preferably AWS), including CDN, WAF, and monitoring tools

• B.Sc. in computer science or an equivalent

• Ownership mentality, a team player approach, and passion for quality

• Curiosity and ability to quickly ramp up on new technologies and architectures

Bonus points

• Experience with Go, Clojure, or Java

• Background in functional programming

• Experience with event-driven architectures and tools like Kafka

• Contributions to open-source projects, blog posts, or tech talks

• Recommended by an AppsFlyer employee

As a global company operating from 25 offices across 19 countries, we reflect the human mosaic of the diverse and multicultural world in which we live. We ensure equal opportunities for all of our employees and promote the recruitment of diverse talents to our global teams without consideration of race, gender, culture, or sexual orientation. We value and encourage curiosity, diversity, and innovation from all our employees, customers, and partners.

“As a Customer Obsessed company, we must first be Employee Obsessed. We need to make sure that we provide the team with the tools and resources they need to go All-In.” Oren Kaniel, CEO