Backend Engineer

Appsflyer

Kyiv Remote permanent

Posted: December 25, 2025

Required Skills

Job Description

The ROI360 organization’s goal is to help user acquisition managers and monetization managers optimize the business performance of their mobile marketing campaigns. We help our customers understand the real value (value for money) of their mobile marketing efforts.

To achieve this goal, we build a distributed SaaS platform to collect, normalize, index, and serve cost and revenue data from 100+ marketing platforms such as Facebook, Google, Ironsource, and more — at scale.

What you’ll do

• Develop and enhance our data collection platform.

• Solve diverse, complex problems at a large scale.

• Collaborate with Product Managers and Software Engineers to deliver value to customers.

• Analyze and improve the performance, scalability, and stability of AppsFlyer’s products, environments, and tools.

• Continuously learn and evaluate new technologies in the effort to perfect our products and adapt to the ever-growing scale.

• Take an active part in our on-call cycle and monitor the system.

What you have

• 4+ years of backend engineering experience with a passion for excellence.

• Solid knowledge in: Kafka, SQS, K8S, Postgres, and event-driven systems.

• Experience with large-scale SaaS production services and databases.

• Experience with cloud platforms (e.g. AWS, GCP).

• Proficiency and ability to code well in at least one language (Java / Go / Clojure / etc.).

• Proficiency with database technologies such as SQL / Athena / BigQuery.

• A team player with a strong sense of ownership.

• Ability to grasp new languages, systems, and frameworks quickly.

• A drive to get things done, especially as part of a team.

• Ability to dive in quickly to complex systems.

• B.Sc. in Computer Science or an equivalent.

Advantages

• Experience in functional programming.

• Hands-on experience with Clojure.

Our Culture

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 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 of 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

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