{"id":1353610,"url":"https://alion.io/job/six-senior-software-engineer","title":"Senior Software Engineer","company":{"id":47665,"name":"SIX","domain":"six-group.com","url":"https://alion.io/company/six","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SuccessFactors","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Madrid, Spain"],"countries":["ES"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":53000,"max_usd":105000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":13},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Apache Kafka","optional":false},{"name":"Java","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"SQL","optional":true}],"status":"live","first_seen_at":"2026-09-24T02:01:00Z","employer_posted_date":"2026-09-24","last_verified_at":"2026-10-01T09:07:00Z","board_verified":true,"closed_at":null,"days_open":7,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":7},"description":"BME - Bolsas y Mercados Españoles - drives the transformation of financial markets and belongs to SIX, the third largest exchange group in Europe.\nWhat sets us apart drives us ahead: between local roots and global relevance, we are a unique blend of tradition and future, of foundation and growth. We value bright minds and inspire them to grow with their ideas. Come and shape the future of finance with us.\nSenior Software Engineer\nMadrid|Working from home up to 40%| Reference8248\nDo you want to work in a highly dynamic environment and build reliable, scalable backend systems? Are you passionate about Java, distributed systems, and event-driven architectures? Then our Backend Engineering Team wants to hear from you.\nWe are an agile and collaborative team responsible for designing and operating core backend services that power our platform in the Post Trading area of the SIX Swiss Exchange. Our goal is to build & maintain robust, scalable, and maintainable systems that support critical business processes.\nIn this position, you will work closely with software engineers, architects, and product teams to design, maintain and deliver high-quality backend solutions.\nWhat You Will Do\nDesign, develop, and maintain backend services and REST APIs using Java, Spring, and Spring Boot\nBuild and operate event-driven services using Apache Kafka\nDevelop and maintain applications running on Java application servers such as WildFly\nCollaborate with engineers and architects on system design, architecture, and technical improvements\nEnsure reliability, scalability, and performance of production systems\nWhat You Bring\nVery strong experience with Java backend development and modern backend design principles\nExperience with Spring and Spring Boot for building microservices\nExperience with Kafka or other messaging / event-streaming platforms\nExperience with Wildfly/JBOSS is a big plus\nExperience designing RESTful APIs and working with SQL databases\nIf you have any questions, check out our FAQ page or call Yuliya Stoykoat +34 917095993.\nFor this vacancy we only accept direct applications in english.\nDiversity is important to us. Therefore, we are looking to receiving applications regardless of any personal background.","description_format":"text","description_chars":2230,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Payment Processing & Gateways","Stock Exchanges & Market Infrastructure","Financial Data & Market Intelligence"],"lifecycle":[{"event":"open","at":"2026-09-27T20:50:26Z"}],"liveness":{"score":78,"band":"hot","label":"Hiring now","p_open":0.9,"p_active":0.871,"p_room":1,"age_days":7,"expected_fill_days":39,"reasons":["conf:76","velocity","win:early"],"computed_at":"2026-10-01T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/six-senior-software-engineer","json_url":"https://alion.io/job/six-senior-software-engineer.json","meta":{"generated_at":"2026-10-01T11:13:56Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":2768,"day_limit":5000,"remaining_today":2232,"minute_limit":60,"resets_at":"2026-10-02T00:00:00Z"}}}