{"id":3282166,"url":"https://alion.io/job/ableneo-senior-java-backend-developer-mf","title":"Senior Java Backend Developer (M/F)","company":{"id":2606258,"name":"Ableneo","domain":"ableneo.com","url":"https://alion.io/company/ableneo","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Nalgoo","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Košice, Slovakia"],"countries":["SK"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":3000,"max":null,"currency":"EUR","period":"month","gross":null,"usd_annual":40260},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CI/CD","optional":false},{"name":"Java","optional":false},{"name":"Kubernetes","optional":false},{"name":"OpenShift","optional":false},{"name":"Oracle","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"Swagger","optional":false},{"name":"Computer Vision","optional":true},{"name":"LLM","optional":true}],"status":"live","first_seen_at":"2026-10-26T12:29:13Z","employer_posted_date":"2026-10-26","last_verified_at":"2026-10-28T11:11:10Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"from 3000€/gross\nJob description\nWe are looking for an experienced Senior Java Backend Developer (M/F) for a project with our client in the banking sector. You will contribute to the development of secure, scalable, and reliable corporate banking services in a modern cloud-native environment.\nYou will work in a cross-functional agile team and participate in the full software development lifecycle, from solution design to implementation, testing, deployment, and operational support.\nWhat You Will Do:\nDesign, develop, and maintain Java-based backend services, REST APIs, microservices, and integration solutions.\n\nAnalyse requirements and contribute to API design and technical decisions.\n\nBuild secure, scalable, and maintainable applications following software engineering best practices.\n\nWrite automated tests and participate in code reviews.\n\nSupport deployment, monitoring, troubleshooting, and ongoing application operations.\n\nCollaborate with developers, architects, Product Owners, and other stakeholders.\n\nRequirements\nStrong experience with Java, Spring, and Spring Boot, ideally complemented by knowledge of Java EE/Jakarta EE.\n\nProven experience developing RESTful APIs and working with microservices and distributed systems.\n\nKnowledge of API-first development and OpenAPI/Swagger specifications.\n\nExperience with relational databases, particularly Oracle Database and/or PostgreSQL.\n\nExperience with Kubernetes and/or OpenShift and familiarity with CI/CD practices.\n\nUnderstanding of secure software development, clean code, software architecture, and maintainable code design.\n\nExperience with automated testing, monitoring, and observability.\n\nAbility to contribute to technical decisions and collaborate effectively in an agile environment.\n\nNice to Have:\nExperience in banking, financial services, or other regulated industries.\n\nExperience with cloud-native architectures and enterprise application development.\n\nBenefits\nEngaging projects across diverse industries, offering continuous professional challenges and growth opportunities\n\nTailor-made learning & development program, complemented by monthly in-house workshops to boost your skills\n\nFlexible working hours and the possibility of home office\n\nModern, inspiring office environment with daily perks such as breakfast, fresh fruit, and yoga sessions\n\nMultiSport card to support an active lifestyle and access to a wide range of sports and wellness facilities\n\nCompany description\nWho we are\nAbleneo is a partner for AI and technology-driven transformation. We combine deep software engineering with business consulting to help organisations implement intelligent systems that deliver measurable results and reduce the risk of failed innovation.\nWhat we do\nAI & Data Enabling. We deploy chatbots and LLM solutions, automate documents and workflows, and work with Computer Vision. Our focus is on solving concrete business problems with AI and achieving a high success rate in real use cases.\nBusiness Optimisation & Efficiency. We streamline processes, reduce delays, automate operational work, and set up more efficient ways of working.\nProduct Design & Development. We design and build digital products, customer journeys, and scalable platforms that support long-term growth.\nSoftware Engineering. We offer flexible delivery models. From specialised roles to full teams, supporting both fast-growing companies and established enterprises.\nWhy join us\nWe have years of experience and strong references across startups, scale-ups, and large organisations. We work on assignments where AI makes real impact. For example, in the banking sector we validated an LLM solution with a high success rate in a real proof-of-concept.\nAt Ableneo you will work on projects that push the boundaries of AI and software engineering. 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