← Sottava, jobs the hour they open
Posted 14 h agoFirst seen 2 h ago
Lead Backend Developer at JMS
Posted by Joom on 20 October 2026. Still on their Workable board when we checked 12 min ago.
What the posting is about
Lead backend development for Joom's marketplace solutions, manage a team of 3-6 developers, and ensure fault tolerance in an AWS environment. Experience in Go, complex project development, and Linux/Unix required. Preference for highload experience and knowledge of MongoDB, Kubernetes.
Read out of the posting
Levelmid
Experience asked5+ years
EmploymentFull time
LocationLisbon, Portugal
RemoteNot stated
Visa sponsorshipNot stated
SalaryNot published, and most postings do not
Posted2026-10-20
Found viaworkable, direct from their system
We saw it 13 hours after it went up.
The posting, as the company wrote it
Employment: Full-time
Experience: Executive
Joom Group is an international tech-centric group of e-commerce companies founded in 2016 in Latvia. We are here to transform the largest industry in the world, global trade, making it more transparent, efficient, and technology-driven.
Today, Joom Group brings together the following businesses: Joom, a global cross-border marketplace; JoomPro, the first and only end-to-end cross-border B2B marketplace; JoomPulse, an AI analytics tool for Mercado Livre sellers; and Onfy, a pharmaceutical marketplace in Germany. Joom Group’s offices are located in China, Brazil, Portugal, Latvia, and Germany, with headquarters in Lisbon, Portugal. We work as one international team, sharing knowledge and collaborating across countries, businesses, and products.
We are currently looking for Lead Backend Developers to join the Joom Marketplace Solutions .
Joom Marketplace Solutions is a platform that allows Joom to go beyond its own marketplace and offer its solutions to other players in the market. Through technical integration, we give our partners access to millions of products from our sellers and take care of the entire order fulfillment process end to end.
Tech stack: Go, MongoDB, Kubernetes, Elasticsearch, AWS, Redis, Jenkins.Frontend: Node.js, React, TypeScript, Rush
Responsibilities
Come up with architecture
Program in Go (Go is not a must for us; it is more important for a successful candidate to have solid algorithm skills, fundamental technical knowledge, and great coding skills in general)
Provide fault tolerance for coded services in an AWS environment
Be prepared for a constant increase of processed and stored data loads and volumes
Participate in new feature and product development discussions
Managing and mentoring a backend team of 3–6 developers
Requirements
Experience in leading and developing a backend team by recruiting, hiring, and training new team members
Confident knowledge of any of the programming languages: Go/Java/Kotlin/C++/Python/Scala
Complex project development experience
Excellent algorithmic training
Experience in development for Linux / Unix
Preferred
Experience with highload
Experience with MongoDB
Experience with Kubernetes
Benefits
Compensation package: base salary and performance-based bonuses
Office-first: flexible hours with a possibility to work remotely 52 days per year
Care & Wellbeing: health insurance (including dental care) for employees and their children, daily meal allowance, and 100% paid sick leave
Relocation Support: full assistance for a smooth relocation for the employees and their family
AI-first approach: licenses and access to a wide range of AI tools
Team & Growth: collaboration with colleagues across Portugal, Brazil, Latvia and China, with opportunities for promotions, professional trainings, and English & Portuguese courses
Community & Engagement: annual team building activities, knowledge-sharing workshops, and a strong sense of team work
Before applying for the above position please review our Candidate Privacy Notice here . By responding to the vacancy, you acknowledge that you have read our Privacy notice.
Also open at Joom
Why this page exists
We read companies’ own hiring systems every hour, 1,805 of them, and show a job the hour it opens instead of when a job board gets around to indexing it. We saw it 13 hours after it went up.
The feed is free. No card, no trial to expire.
Apply at JoomA free account first, no card