{"schemaVersion":"jobsearcher.job.v1","id":"49105456767b9c8fd6ad05fa","url":"https://jobsearcher.com/jobs/49105456767b9c8fd6ad05fa","canonicalUrl":"https://jobsearcher.com/jobs/49105456767b9c8fd6ad05fa","title":"Java Technical Lead (System Design)","description":"On behalf of our Client from the US, Mobilunity is looking for a Senior Java Developer.\nYou will work on mission-critical backend systems powering a large-scale US e-commerce platform. The role involves designing and developing backend services, integrations, inventory synchronization, order processing, pricing logic, and marketplace integrations supporting a high-traffic online business.\nThis is not a typical feature-delivery role. You’ll participate in architectural discussions, solve complex engineering problems, and collaborate directly with technical and business stakeholders to deliver scalable solutions.\nCandidates must be available to work primarily during US business hours, with a preferred schedule of 1:00 PM – 8:00 PM CET.\nWhat we’re looking for:\nWe’re looking for more than a Senior Java Developer.\nWe need an engineer who enjoys understanding business problems before proposing technical solutions.\nYou should be comfortable working with open-ended challenges, evaluating trade-offs, asking the right questions, and independently designing scalable backend solutions.\nThe ideal candidate:\nthinks beyond implementation;\nunderstands business impact;\nenjoys solving complex engineering problems;\nproactively identifies bottlenecks;\ncan justify architectural decisions;\nunderstands scalability, performance and cost optimization;\nuses AI as an engineering productivity tool while applying independent judgment.\nResponsibilities:\nDesign, develop and maintain scalable backend services using Java and Spring.\nBuild integrations with internal services, marketplaces and external partners.\nDevelop REST and SOAP APIs.\nWork on inventory synchronization, pricing, catalog management and order processing.\nParticipate in architecture discussions and technical decision-making.\nTroubleshoot production issues.\nCollaborate directly with engineering and business stakeholders.\nImprove system scalability, reliability and performance.\nContribute to engineering standards and development best practices.\nRequirements:\n7+ years of commercial Java experience.\nStrong Java SE and OOP knowledge.\nSpring Boot, Spring Framework.\nHibernate/JPA.\nREST APIs.\nSOAP.\nSQL (MySQL or similar).\nSoftware architecture principles.\nExperience designing scalable backend systems.\nStrong analytical and problem-solving skills.\nAdvanced English.\nNice to have:\nSAP Commerce (Hybris)\nAWS\nDocker\nKafka\nCI/CD\nGraphQL\nMarketplace integrations\nEvent-driven architecture\nHigh-load systems\nAutomotive / Retail / E-commerce\nAI-assisted development\nExperience working with US companies\nIn return we offer:\nThe friendliest community of like-minded IT-people\nOpen knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies\nMobilunity Medical Insurance program designed to attend our teams’ needs\nPaid vacations and sick leaves, including 5 paid days per year that don’t require a sick note\nPerfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both\nNo open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones\nEnglish classes in 1-to-1 & group modes with elements of gamification\nNeverending fun: sports events, tournaments, music band, multiple affinity groups\nCome on board, and let’s grow together!","company":"Mobilunity","rawCompany":"mobilunity","city":"Denver","state":"CO","isRemote":false,"isActive":false,"createdAt":"2026-08-15T13:41:23.584Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1211.00","title":"Computer Systems Analysts","slug":"computer-systems-analysts"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Java Technical Lead (System Design)","description":"On behalf of our Client from the US, Mobilunity is looking for a Senior Java Developer.\nYou will work on mission-critical backend systems powering a large-scale US e-commerce platform. The role involves designing and developing backend services, integrations, inventory synchronization, order processing, pricing logic, and marketplace integrations supporting a high-traffic online business.\nThis is not a typical feature-delivery role. You’ll participate in architectural discussions, solve complex engineering problems, and collaborate directly with technical and business stakeholders to deliver scalable solutions.\nCandidates must be available to work primarily during US business hours, with a preferred schedule of 1:00 PM – 8:00 PM CET.\nWhat we’re looking for:\nWe’re looking for more than a Senior Java Developer.\nWe need an engineer who enjoys understanding business problems before proposing technical solutions.\nYou should be comfortable working with open-ended challenges, evaluating trade-offs, asking the right questions, and independently designing scalable backend solutions.\nThe ideal candidate:\nthinks beyond implementation;\nunderstands business impact;\nenjoys solving complex engineering problems;\nproactively identifies bottlenecks;\ncan justify architectural decisions;\nunderstands scalability, performance and cost optimization;\nuses AI as an engineering productivity tool while applying independent judgment.\nResponsibilities:\nDesign, develop and maintain scalable backend services using Java and Spring.\nBuild integrations with internal services, marketplaces and external partners.\nDevelop REST and SOAP APIs.\nWork on inventory synchronization, pricing, catalog management and order processing.\nParticipate in architecture discussions and technical decision-making.\nTroubleshoot production issues.\nCollaborate directly with engineering and business stakeholders.\nImprove system scalability, reliability and performance.\nContribute to engineering standards and development best practices.\nRequirements:\n7+ years of commercial Java experience.\nStrong Java SE and OOP knowledge.\nSpring Boot, Spring Framework.\nHibernate/JPA.\nREST APIs.\nSOAP.\nSQL (MySQL or similar).\nSoftware architecture principles.\nExperience designing scalable backend systems.\nStrong analytical and problem-solving skills.\nAdvanced English.\nNice to have:\nSAP Commerce (Hybris)\nAWS\nDocker\nKafka\nCI/CD\nGraphQL\nMarketplace integrations\nEvent-driven architecture\nHigh-load systems\nAutomotive / Retail / E-commerce\nAI-assisted development\nExperience working with US companies\nIn return we offer:\nThe friendliest community of like-minded IT-people\nOpen knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies\nMobilunity Medical Insurance program designed to attend our teams’ needs\nPaid vacations and sick leaves, including 5 paid days per year that don’t require a sick note\nPerfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both\nNo open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones\nEnglish classes in 1-to-1 & group modes with elements of gamification\nNeverending fun: sports events, tournaments, music band, multiple affinity groups\nCome on board, and let’s grow together!","datePosted":"2026-08-15T13:41:23.584Z","dateModified":"2026-08-15T13:41:23.584Z","hiringOrganization":{"@type":"Organization","name":"Mobilunity","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Denver","addressRegion":"CO","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"49105456767b9c8fd6ad05fa"},"url":"https://jobsearcher.com/jobs/49105456767b9c8fd6ad05fa"}}