Java Software Engineer

SEON is the leading fraud prevention system of record, catching fraud before it happens at any point across the customer journey. Trusted by over 5,000 global companies, we combine your company’s data with our proprietary real-time signals to deliver actionable fraud insights tailored to your business outcomes. We deliver the fastest time to value in the market through a single API call, enabling quick and seamless onboarding and integration. By analyzing billions of transactions, we’ve prevented $200 billion in fraudulent activities, showcasing why the world’s most innovative companies choose SEON.

As a senior-level Software Engineer , you will play a critical role in designing, developing, and maintaining, software systems and infrastructure for data collection pipelines in the Data Enrichment domain. You will focus on creating software to enable extracting and ingesting data from different websites using web crawling tools or APIs and provide that to other services or customers through APIs. Additionally, you will mentor team members, contribute to their technical growth, and collaborate with the Engineering Manager on shaping the technical aspects of their career plans.

This role reports into the Engineering Manager of Data Enrichment.

This role offers flexibility and is based in our Budapest office with a hybrid schedule of being in the office approximately three days per week.

What You'll Do :

• Lead the design and development of robust, scalable backend components using Java and Spring framework.
• Contribute to the redesign and modernization of a legacy Python-based system.
• Collaborate on API design, system architecture, and performance tuning.
• Identify and resolve complex technical challenges; continuously improve code quality, maintainability, and system performance.
• Evaluate and integrate tools or frameworks that improve reliability and development efficiency.
• Mentor engineers through code reviews, pairing, and technical guidance.
• Work closely with the Engineering Manager to support team members’ technical career development.
• Collaborate with Product Management and other Engineering teams to align technical work with business goals.
• Take ownership of the design, implementation, and delivery of high-impact backend features.
• Provide clear effort estimates, contribute to defining the “definition of done” and ensure timely delivery of initiatives.
• Monitor engineering KPIs and suggest improvements based on insights from team-specific metrics.
• Maintain a culture of accountability and reliability in the delivery process.
• Contribute to improving monitoring and observability for both new and existing systems.
• Support production systems by diagnosing and resolving issues quickly.
• Proactively improve system reliability and reduce operational burden through automation and architectural improvements.

What You Bring :

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