Senior Software Architect (AML and Device Intelligence)

SEON is the command center for fraud prevention and AML compliance, helping thousands of companies worldwide stop fraud, reduce risk and protect revenue. Powered by 900+ real-time, first-party data signals, SEON enriches customer profiles, flags suspicious behavior and streamlines compliance workflows - all from one place. SEON provides richer data, more flexible and transparent analysis, and faster time to value than any other provider on the market. We’ve helped companies reduce fraud by 95% and achieve 32x ROI, and we’re growing fast, thanks to our partnerships with some of the world’s most ambitious digital brands like Revolut, Wise, and Bilt.

You will join SEON's Architecture team, reporting to the VP of Architecture. As a Senior Software Architect, you will embed with our AML and device intelligence engineering teams — with a primary focus on AML (roughly 60/40 split) — helping define feasibility during product research and shaping the technical vision for both groups.

These are architecturally rich domains: think high-volume event processing, real-time entity monitoring, cross-jurisdictional compliance constraints, and the unique challenges of device fingerprinting at scale.

Location: Budapest, hybrid

What you’ll do

• Embed in the daily life of two engineering teams: one specialized in AML entity monitoring and case management solutions, and the other focused on device fingerprinting technology.

• Ensure that all initiatives delivered by the teams have a technical design which is in-line with SEON's architectural best-practices, pragmatic (solves the right problems without being overcomplicated), and complete and precise (covering all necessary aspects without loose ends).

• Ensure that security, scalability, and compliance are built into the foundation of all technical designs.

• Collaborate with the Tech Lead and Product Managers of the teams to identify the right ways to solve business problems.

• Deliver proof-of-concept solutions to demonstrate potential technical directions to take.

• Support the estimation effort during the initiative planning phase.

• Contribute to the delivery of initiatives via hands-on work when needed.

• Act as a technical mentor to the engineers within the AML and Device Intelligence teams, elevating the overall engineering standards and practices.

• Surface recurring architectural challenges to the centralized Architecture team and contribute to company-wide solutions to those problems.

• Document design decisions in the form of Architecture Decision Records.

What you’ll bring

• Strong working knowledge of modern web development technologies, specifically TypeScript and Python.

• Experience with distributed system design.

• Experience designing and scaling high-throughput, low-latency distributed systems.

• Strong understanding of how web services and SaaS applications work.

• Expertise with Amazon Web Services (AWS).

• Experience with relational databases (specifically PostgreSQL or YugabyteDB).

• Experience with modern DevOps tools, particularly Kubernetes, Terraform, and ArgoCD.

• Strong understanding of data security best practices and designing systems that comply with strict data privacy standards (e.g., GDPR).

• Strong organizational skills and ability to work together with both technical and non-technical stakeholders.

• Ability to work independently, prioritize your workload.

• Excellent written and verbal English communication skills.

Nice to have

• Familiarity with the fraud prevention, AML, KYC, or cybersecurity domains is a strong advantage.

• Experience with Kafka and Flink is a plus.

• Experience with native mobile development on iOS or Android is a plus.

• Experience with multiple database/search technologies, specifically Elasticsearch is a plus.

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SEON is an equal opportunity employer. We strive to embrace what makes each one of us unique; we each have our own story. Whether looking at our current staff or future team members, we believe that everyone has something to contribute, and our employment practices reflect that. We do not make an employment decision based upon race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws. Please let your recruiter know if you need reasonable adjustments to our recruitment process.