{"id":2898171,"url":"https://alion.io/job/arcube-senior-java-backend-engineer","title":"Senior Java Backend Engineer","company":{"id":1973866,"name":"Arcube","domain":"arcube.com","url":"https://alion.io/company/arcube","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_payroll_markers","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":81000,"max_usd":208000,"period":"year","method":"global_role_seniority_cell","sample_n":7270},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache Kafka","optional":false},{"name":"AWS","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Java","optional":false},{"name":"MySQL","optional":false},{"name":"PostgreSQL","optional":false},{"name":"RabbitMQ","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2026-10-20T03:50:23Z","employer_posted_date":null,"last_verified_at":"2026-10-20T03:50:23Z","board_verified":false,"closed_at":null,"days_open":3,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":3},"description":"Category: Technology \n\nLocation: \n\nWe're looking for a Senior Backend Engineer with deep expertise in Java to build resilient, high-throughput, low-latency distributed systems capable of handling tens of thousands of concurrent requests. You'll own end-to-end supplier integrations, working directly with external suppliers to implement REST API and webhooks integrations.The role requires strong product intuition and a deep understanding of the full passenger lifecycle, from bookings and order creation to modifications and cancellations, as well as how these workflows operate reliably across a multi-tenant platform.\n\nOwn the supplier integrations process from gathering requirements and API design through production deployment and ongoing partner relationships.\n\nIntegrate with supplier APIs (RESTful/webhooks) by implementing secure, reliable connections that handle authentication, rate limiting, retries, and complex error scenarios.\n\nBuild event-driven microservices that process high-volume transactions with strict latency requirements across a multi-tenant architecture.\n\nDeploy and operate production services on AWS with monitoring and observability, maintaining 99.99% uptime SLA.\n\nRequirements\n5+ years backend engineering experience with ownership of production systems serving at least 10,000+ daily active users.\n\nAbility to gather requirements from suppliers, analyse integration specifications, and communicate effectively with key stakeholders throughout the integration lifecycle.\n\nExpert in Java, with extensive experience writing concurrent, multithreading, and asynchronous code for high-performance systems.\n\nDeep expertise with Spring ecosystem (Spring Boot/Data/Security), building scalable APIs and microservices.\n\nProven ability to integrate and operate RESTful APIs with third-party suppliers, handling authentication, rate limiting, and error scenarios.\n\nStrong understanding of distributed systems: event-driven patterns, messaging brokers (eg. 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