Backend engineer in Trust & Safety

Contact Aviv Group; Berlin; Hybrid; EUR 120,000 - 180,000; Full time

Benefits offered by this job

Hybrid work

Company pension

Mobility allowance

Urban Sports Club

Mental health support

Learning & development

Volunteer days

Corporate benefits

Job summary

Contact Aviv Group ищет технического архитектора Trust & Safety в Берлине. Вы будете основным техническим авторитетом по обнаружению мошенничества, качеству контента и оценке риска, задачей станет направление архитектуры масштабируемой системы.

Требуется 7+ лет бэкенд‑инженерии на Python, глубокие знания AWS и Terraform, опыт в реальном времени и наставничество. Гибридная работа, соцпакет и другие преимущества доступны.”

Qualifications

• Сильные знания ML: как обучаются и разворачиваются модели, конвейеры и инфраструктура.
• 7+ лет бэкенд‑инженерии, опыт распределённых систем на Python.
• Глубокий опыт AWS (Lambda, Kinesis, Glue, Athena, ECS) и Terraform.
• Опыт проектирования реального времени и стриминговых архитектур, stateful систем.
• Навыки архитектуры на уровне staff, менторство инженеров и влияние на несколько команд.
• Плюс: опыт fraud/Trust & Safety, GDPR, верификация идентификаторов.

Responsibilities

• Будете основным техническим авторитетом Trust & Safety, формируя дорожную карту архитектуры.
• Проектируете и строите масштабируемую реальную‑временную платформу для детекции мошенничества и оценки риска.
• Разрабатываете конвейеры данных, обучающие и валидирующие пайплайны, инфраструктуру развёртывания.
• Руководите модернизацией legacy‑систем и миграциями без потери надёжности.
• Менторинг старших инженеров и повышение инженерных стандартов.
• Соблюдаете задержку отклика и обеспечиваете надёжную работу системы риск‑оценки.

Skills

Machine learning

Backend engineering

AWS

Event-driven architecture

Mentoring

Product security

Tools

Python

Job description

Описание:

Trust is what makes a real estate marketplace work: home seekers, owners and professionals all need to know that listings, accounts and interactions are genuine. AVIV's Trust & Safety organization builds the detection, scoring and verification mechanisms that protect that trust across our brands. We are building a real-time Trust-as-a-Service platform and modernizing the legacy systems behind it, and we need a technical authority to set the direction. This is an opportunity to build and improve, not simply maintain.

Задачи:

Be the primary technical authority for Trust & Safety, owning the architectural roadmap across fraud detection, content quality and the trust platform. Design and build a scalable, real-time platform for fraud detection, content quality, identity verification and risk scoring that other AVIV product teams can consume. Build the data collection pipelines, training and evaluation workflows, and deployment infrastructure that make our models scalable, reliable and cloud-ready. Design event-driven, high-throughput streaming and stateful scoring systems that process signals in real time without degrading the user experience. Lead the modernization and deprecation of legacy Trust & Safety systems, with safe migration paths and no loss of reliability. Mentor Senior Engineers, raise engineering standards and influence technical decisions across multiple teams. Reduce fraud through real-time risk scoring. Move Trust & Safety workloads onto the new platform and retire legacy systems. Shorten the path from model training to production deployment. Keep fraud checks within a latency budget with no incidents caused by them. Give Product and Operations reliable visibility into core risk-scoring and platform metrics.

Требования:

• Strong machine learning knowledge — you understand how models are trained, evaluated and deployed, and can build the pipelines and infrastructure that run them in production.
• Significant backend engineering experience (typically 7+ years), ideally in Python, with deep expertise in distributed, high-scale systems.
• Strong hands-on AWS experience (Lambda, Kinesis, Glue, Athena, ECS) and Infrastructure as Code with Terraform.
• Experience with event-driven and real-time streaming architectures, including stateful systems and real-time scoring.
• Staff-level architecture skills: you have led large-scale legacy modernization, influenced multiple teams without direct authority and mentored senior engineers.
• Будет плюсом: experience in fraud, Trust & Safety or risk; security and GDPR knowledge; ID verification or external risk providers; marketplace experience

Условия:

• Hybrid – 2-3 days per week in the office.
• 30 days of holiday per year Hybrid work, with remote working abroad possible within the EU/EEA and Switzerland (four weeks' notice and your manager's approval)
• Company pension scheme
• JobRad Mobility allowance of up to €63 per month
• Urban Sports Club membership
• Mental health support with Kyan Health
• Learning and development through Juno Journey
• 2 volunteering days per year
• Corporate benefits through Axel Springer
• Corporate Benefits or Benefits.me
• Healthy snack and lunch selection (lunch offers depend on location)
• Office dogs welcome (pre-registration necessary)
• Benefits may vary by location.