{"id":2246481,"url":"https://alion.io/job/scytalys-senior-software-engineer","title":"Senior Software Engineer","company":{"id":4382604,"name":"SCYTALYS","domain":"scytalys.com","url":"https://alion.io/company/scytalys","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Career site","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":["Néo Psychikó, Greece"],"countries":["GR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":30000,"max_usd":86000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":6426},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Hibernate","optional":false},{"name":"Java","optional":false},{"name":"Spring Boot","optional":false},{"name":"Windows","optional":false},{"name":"ActiveMQ","optional":true},{"name":"Angular","optional":true},{"name":"Apache Kafka","optional":true},{"name":"C++","optional":true},{"name":"Docker","optional":true},{"name":"Git","optional":true},{"name":"Gradle","optional":true},{"name":"gRPC","optional":true},{"name":"JavaScript","optional":true},{"name":"Kubernetes","optional":true},{"name":"Maven","optional":true},{"name":"RabbitMQ","optional":true},{"name":"Redis","optional":true},{"name":"TypeScript","optional":true}],"status":"live","first_seen_at":"2026-10-11T02:05:50Z","employer_posted_date":"2026-10-11","last_verified_at":"2026-10-13T12:48:42Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"EFA GROUP comprises companies in Aerospace, Security, Defense, and Industrial Cooperation with a solid international presence. EFA GROUP currently employs more than 400 people, the majority of whom are engineers and scientists. Headquartered in Greece, the Group maintains a strong international presence across Europe (Cyprus, Belgium, Switzerland, Estonia, and Germany), Asia (Singapore, Indonesia, and South Korea), the Middle East (UAE), and the United States, serving customers in 34 countries worldwide.\nThe GROUP includes EFA VENTURES (Supply Chain Management and integrated services), AEROSPACE VENTURES (Industrial Participation and related services), SCYTALYS (Systems Integration and Software), ES SYSTEMS (MEMs & IoT Integration), EPICOS (Global Defense B2B Information Platform), UCANDRONE (Unmanned Systems), AETHER AERONAUTICS (Target Drones), STHENOS AI (Intelligence Solutions), THYREOS CYBER (cyber security) , SUPERIOR AIR (aviation services and specialized aerial missions), SSMART (defense hardware - software production and services).\nSCYTALYS is a leading defense software development and systems integration company, founded in Greece in 1993. Serving customers in the Aerospace, Defense, and Security sectors, the company delivers advanced software solutions focused on interoperability, situational awareness, and mission effectiveness. Its expertise spans Tactical Data Links, Command & Control (C2/C4I) Systems, Training, Testing & Simulation, and Surveillance & Reconnaissance solutions.\nThe Role\nSCYTALYS is looking for an experienced and motivated Senior Software Engineer who will be at the heart of designing and building our systems. You will translate requirements into well-architected, maintainable software and play a key role in shaping the technical direction of the products you work on.\nKey Responsibilities\nDesign and develop high-quality software solutions using Java and Spring Boot\nAnalyze technical requirements and translate them into scalable software designs\nArchitect and implement core application features and backend services\nIntegrate internal and third-party systems to enhance functionality and performance\nOptimize applications for performance, reliability, and maintainability\nCollaborate with engineers, architects, and stakeholders throughout the development lifecycle\nContribute to technical decisions and propose solutions to engineering challenges\nRequirements\n5+ years of professional software development experience\nBSc degree in Computer Science, Electrical/Electronics Engineering, or a related field\nStrong experience with Java (Java 8/11) and Spring Boot\nAbility to analyze requirements and design scalable software solutions\nGood understanding of Linux/Windows environments and networking concepts\nExperience with relational and NoSQL databases, including JPA/Hibernate or Spring Data\nExperience in application debugging, performance optimization, and troubleshooting\nStrong communication and teamwork skills\nNice to Have\nExperience with Angular, React, or Vue\nKnowledge of microservices architecture, RESTful/gRPC APIs, and reactive programming\nExperience with C/C++, Kafka, RabbitMQ, or ActiveMQ\nFamiliarity with Maven/Gradle, Git, Docker, and Kubernetes\nExperience with database tuning, migrations, caching technologies (e.g. Redis), and geospatial databases\nExposure to Defence, Security, or Command & Control systems\nKnowledge of Tactical Data Links, NATO standards, GIS, or OGC technologies","description_format":"text","description_chars":3467,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-11T02:05:50Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":2,"expected_fill_days":22,"reasons":["conf:0","win:early"],"computed_at":"2026-10-13T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/scytalys-senior-software-engineer","json_url":"https://alion.io/job/scytalys-senior-software-engineer.json","meta":{"generated_at":"2026-10-13T14:44:07Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":22640,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4382604},"rest":"https://alion.io/mcp/rest/get_company?id=4382604"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fscytalys-senior-software-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fscytalys-senior-software-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fscytalys-senior-software-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/scytalys-senior-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fscytalys-senior-software-engineer"}]}