Joom
Joom Group builds e-commerce products for global trade, including Joom, a cross-border consumer marketplace; JoomPro, a B2B importing marketplace; JoomPulse, analytics for Mercado Livre sellers; and Onfy, a German pharmaceutical marketplace. Founded in 2016 in Riga and privately held, the company moved its headquarters to Lisbon in 2023 and operates across Europe, the Americas, and China. Revenue comes from marketplace commissions, services for sellers, and related transaction fees.
Open Positions at Joom
5 open positions
Onfy is seeking a Senior Backend Developer specializing in Kotlin to build scalable, reliable backend systems and own complex architectural areas. The role offers an office-first environment with limited remote work, AI-enabled engineering workflows, and international collaboration.
Joom is hiring a Senior ML Engineer to improve marketplace search and build AI/ML experiences for orders, including contextual user answers and automated refunds. The role combines end-to-end machine learning development with distributed, high-load application engineering.
Join Joom as a backend developer building high-load marketplace, infrastructure, storage, or client-facing services in Go and related technologies. The role focuses on architecture, fault tolerance, scalable data processing, and new product development across Joom’s international teams.
Application Security Engineer responsible for establishing application security practices, assessing web and mobile products, and helping development teams remediate vulnerabilities. The role will build the company’s SSDLC and security direction from the ground up.
Build mission-critical software that transforms global trade, from high-load B2B systems and cross-border logistics to ML-serving infrastructure and AI-powered internal tools. This autonomous role offers direct business impact within a compact, highly experienced international engineering team.