Jobs at ARQ

Lead and establish ARQ's security function in Brazil across application security, security operations, and GRC. Drive threat modelling, secure code review, API and AI/agentic workflow assessments, SIEM detection and response (Datadog, CrowdStrike, Cloudflare), incident response readiness, cloud security (AWS, Kubernetes), and vendor security assessments.

Design, build, and deploy machine learning models to detect fraud, prevent losses, and monitor risk. Work with Product, Engineering, and Operations to turn large-scale data into production-ready pipelines and model-serving solutions, monitor performance, and continuously improve model accuracy and business impact.

Design, develop, and maintain scalable backend systems for fintech products. Build REST APIs and microservices, improve existing systems (payments, treasury, transactions, crypto), and use Java, Spring Boot, and Postgres. Follow TDD, DDD, and CI/CD practices to deliver maintainable, high-performance services.

Design, develop, and maintain scalable, secure backend systems and microservices. Build REST APIs, improve existing systems (payments, treasury, transactions, crypto liquidity), and deliver high-quality code using Spring Boot, Java, Postgres, TDD, DDD, and CI/CD practices. Collaborate across teams in a hybrid office environment.

Design, develop, and maintain scalable backend systems and microservices (payments, treasury, transactions, crypto liquidity). Build REST APIs, improve existing systems, and apply clean code practices with TDD, DDD, and CI/CD.

The Talent Acquisition Specialist will lead hiring efforts, build a talent team, and implement scalable recruitment programs to drive growth at ARQ. Responsibilities include sourcing candidates, managing hiring KPIs, and ensuring an exceptional candidate experience.

Lead growth-focused data science initiatives, owning LTV prediction models across countries and channels. Translate business questions into models, analyze large customer and marketing datasets, evaluate acquisition quality, monitor and productionise models with engineering partners, and drive data-informed growth and retention decisions.

As a Product Owner at ARQ, you'll lead the strategy and execution of the company's internal operating system, focusing on KPI platforms and employee directories while collaborating with cross-functional teams.

Own and build the KYC customer verification product: define vision and roadmap, lead engineers and cross-functional teams, translate regulatory and risk needs into product specs, track KPIs, optimize verification journeys, and continuously improve onboarding and due diligence.

Work directly with founders to lead cross-functional, revenue-driving initiatives: launch monetization streams, design activation and cross-sell programs, execute local growth (community, affiliates, influencers), negotiate commercial terms, and track P&L impact of projects to improve revenue, margins, and operating costs.

The Growth Analytics Lead will analyze growth data, define KPIs, conduct complex analyses, and support strategic recommendations for business performance.