{"id":2933619,"url":"https://alion.io/job/joom-lead-backend-developer-at-jms","title":"Lead Backend Developer at JMS","company":{"id":678825,"name":"Joom","domain":"joom.com","url":"https://alion.io/company/joom-2","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":87,"open_postings":3,"ghost_share":0,"stale_share":0.333,"repost_share":0,"time_to_fill_p50_days":70,"computed_at":"2026-10-22T06:10:10Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Lisbon, Portugal"],"countries":["PT"],"hiring_countries":["CN","BR","LV","PT"],"hiring_countries_total":4,"salary":null,"salary_estimate":{"min_usd":44000,"max_usd":117000,"period":"year","method":"role_seniority_country_cell","sample_n":16},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"C++","optional":false},{"name":"Go","optional":false},{"name":"Java","optional":false},{"name":"Kotlin","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linux","optional":false},{"name":"Python","optional":false},{"name":"Scala","optional":false},{"name":"Unix","optional":false},{"name":"ElasticSearch","optional":true},{"name":"JavaScript","optional":true},{"name":"Jenkins","optional":true},{"name":"Node JS","optional":true},{"name":"React.js","optional":true},{"name":"Redis","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-10-20T15:26:26Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-10-23T03:27:24Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"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.\nToday, 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.\nWe are currently looking for Lead Backend Developers to join the Joom Marketplace Solutions.\nJoom 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.\nTech stack: Go, MongoDB, Kubernetes, Elasticsearch, AWS, Redis, Jenkins.Frontend: Node.js, React, TypeScript, Rush\nResponsibilities\nCome up with architecture\nProgram 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)\nProvide fault tolerance for coded services in an AWS environment\nBe prepared for a constant increase of processed and stored data loads and volumes\nParticipate in new feature and product development discussions\nManaging and mentoring a backend team of 3-6 developers\nRequirements\nExperience in leading and developing a backend team by recruiting, hiring, and training new team members\nConfident knowledge of any of the programming languages: Go/Java/Kotlin/C++/Python/Scala\nComplex project development experience\nExcellent algorithmic training\nExperience in development for Linux / Unix\nPreferred\nExperience with highload\nExperience with MongoDB\nExperience with Kubernetes\nBenefits\nCompensation package: base salary and performance-based bonuses\nOffice-first: flexible hours with a possibility to work remotely 52 days per year\nCare & Wellbeing: health insurance (including dental care) for employees and their children, daily meal allowance, and 100% paid sick leave\nRelocation Support: full assistance for a smooth relocation for the employees and their family\nAI-first approach: licenses and access to a wide range of AI tools\nTeam & Growth: collaboration with colleagues across Portugal, Brazil, Latvia and China, with opportunities for promotions, professional trainings, and English & Portuguese courses\nCommunity & Engagement: annual team building activities, knowledge-sharing workshops, and a strong sense of team work\nBefore applying for the above position please review our Candidate Privacy Notice here. 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