{"id":3466366,"url":"https://alion.io/job/adaptiq-senior-java-engineer","title":"Senior Java Engineer","company":{"id":4485822,"name":"Adaptiq","domain":"adaptiq.co","url":"https://alion.io/company/adaptiq","size_band":null,"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":"board_field","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Ukraine"],"countries":["UA"],"hiring_countries":["UA"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Claude Code","optional":false},{"name":"Cursor","optional":false},{"name":"OpenAI Codex","optional":false},{"name":"Spring Boot","optional":false},{"name":"AWS","optional":true},{"name":"CI/CD","optional":true},{"name":"Java","optional":true},{"name":"JavaScript","optional":true},{"name":"React.js","optional":true},{"name":"Rest API","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-10-13T11:10:01Z","employer_posted_date":null,"last_verified_at":"2026-10-13T11:10:01Z","board_verified":false,"closed_at":null,"days_open":18,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":18},"description":"Who We Are\n\nAdaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies across a wide range of industries.\n\nAbout the Product\n\nOur client is an established technology company developing a sophisticated B2B SaaS platform that helps organizations streamline complex processes, manage digital operations, and deliver customized solutions to their customers.\n\nThe product serves a substantial international customer base and has evolved into a mature, feature-rich ecosystem with a strong focus on flexibility, automation, and scalability. Its architecture supports demanding production workloads, complex data processing, and a wide range of integrations with external systems and services.\n\nThe engineering team tackles exciting challenges around existing components, distributed systems, scalability, concurrency, and performance optimization, while continuously modernizing the platform and delivering new features in a fast-paced, AI-driven development environment.\n\nAbout the Role\n\nWe are looking for a Senior Back End Engineer who combines strong backend expertise with an AI-first mindset, product thinking, and a high level of ownership. You will join a cross-functional R&D team working on the development and continuous improvement of a large-scale SaaS platform.\n\nIn this role, you will take ownership of critical back end components, design and implement scalable solutions, and address complex engineering challenges related to performance, concurrency, and system reliability. \n\nThis is a fast-paced environment where engineers are empowered to make decisions, manage multiple priorities, and drive projects forward independently.\n\nWe are looking for an autonomous, proactive engineer who is comfortable navigating ambiguity, managing multiple priorities, and using modern development practices, including AI-assisted tools, to deliver high-quality solutions efficiently.\n\nWhat You Will Do\n\nDesign, develop, and maintain scalable backend services using Java and Spring Boot.\n\nTake end-to-end ownership of features, from loosely defined requirements to production-ready solutions.\n\nDesign and optimize backend architecture, including concurrency, multithreading, databases, and distributed services.\n\nLeverage AI coding tools daily to accelerate development, solve complex problems, and improve engineering productivity.\n\nManage multiple tasks and development workflows in parallel, effectively prioritizing and driving delivery.\n\nProactively collaborate with product, architecture, and engineering teams to clarify requirements, resolve blockers, and move projects forward.\n\nContribute beyond traditional backend boundaries when needed, including integrations, infrastructure-related challenges, and adjacent technologies.\n\nMaintain high engineering standards through automated testing, code reviews, and continuous improvement.\n\nWhat We're Looking For\n\n5+ years of professional software development experience, with strong hands-on expertise in Java.\n\nSolid experience with Spring / Spring Boot, relational or NoSQL databases, and backend system design.\n\nStrong understanding of multithreading, concurrency, and core Java concepts.\n\nAdvanced, daily hands-on use of AI development tools such as Claude Code, Cursor, Codex, or similar, with practical experience integrating AI into real development workflows.\n\nAbility to critically evaluate AI-generated code, make sound technical decisions, and maintain high engineering standards.\n\nProven end-to-end ownership, independence, and ability to turn ambiguous requirements into working solutions.\n\nStrong product mindset, proactive problem-solving, and the ability to manage multiple priorities in a fast-moving environment.\n\nWillingness to work across technical boundaries rather than limiting yourself to backend development.\n\nStrong communication skills and the ability to collaborate effectively in English.\n\nNice to Have\n\nFamiliarity with front end technologies such as JavaScript, TypeScript, React\n\nExperience in fast-paced product development environments.\n\nFamiliarity with REST APIs, event-driven architectures, and asynchronous processing\n\nFamiliarity with AWS infrastructure, serverless components, or containerized environments\n\nExposure to cloud infrastructure, CI/CD pipelines, or DevOps practices.\n\nWhy Join Us\n\n20 days of paid vacation per calendar year, plus official public holidays in your country of residence.\n\nFull accounting and legal support in the countries where we operate.\n\nFully remote work with a powerful workstation and access to a co-working space when 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