{"id":3816741,"url":"https://alion.io/job/uni-systems-full-stack-developer-3","title":"Full-Stack Developer","company":{"id":55545,"name":"Uni Systems","domain":"unisystems.com","url":"https://alion.io/company/uni-systems","size_band":"201-500","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"B","score":80,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":17,"computed_at":"2026-11-06T05:58:05Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Athens, Greece"],"countries":["GR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"CI/CD","optional":false},{"name":"Git","optional":false},{"name":"Java","optional":false},{"name":"MySQL","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Rest API","optional":false},{"name":"Scrum","optional":false},{"name":"Spring Boot","optional":false},{"name":"TypeScript","optional":false}],"status":"closed","first_seen_at":"2026-11-05T16:22:33Z","employer_posted_date":"2026-11-05","last_verified_at":"2026-11-06T10:50:12Z","board_verified":false,"closed_at":"2026-11-06T10:50:12Z","days_open":0,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":0},"description":"Uni Systems is a European ICT systems integrator delivering consulting, design, implementation, and support for integrated technology solutions and services. Working across the computer software space, the company helps organizations build and run reliable systems that support complex business needs. This is an opportunity to contribute to meaningful software delivery in a collaborative, quality-focused engineering environment.\nAs a Full-Stack Developer, you will help build and enhance applications that span front-end and back-end systems, contributing to solutions that are scalable, secure, and maintainable.\nBeyond writing high-quality code, you will work closely with technical and business stakeholders to understand business needs, clarify requirements, and translate them into effective technical solutions. We are looking for someone who is curious about the business context behind the applications they develop and wants to actively contribute to shaping solutions, rather than simply implementing predefined specifications.\nYou will be part of an Agile delivery environment, collaborating across teams to build scalable, secure, maintainable, and user-focused solutions.\nResponsibilities\nDesign, develop, and maintain full-stack applications using Java/Spring Boot on the back end and React/TypeScript on the front end.\nDevelop REST APIs, business logic, reusable components, and integrations with relational databases.\nCollaborate with business and technical stakeholders to understand business processes, analyze requirements, and translate them into well-designed technical solutions.\nAsk the right questions, identify gaps or ambiguities in requirements, and contribute ideas that improve both the technical solution and the overall user experience.\nWrite clean, maintainable, secure, and well-tested code following software engineering best practices.\nPerform testing, debugging, troubleshooting, code reviews, and performance optimization across the application stack.\nContribute to technical design decisions and continuously improve existing applications and development practices.\nCreate and maintain technical documentation.\nActively participate in Agile ceremonies and collaborate with developers, analysts, QA engineers, and other members of the delivery team.\nRequirements\nAround 3+ years of professional experience in full-stack software development.\nStrong hands-on experience with Java and Spring Boot for back-end development.\nStrong hands-on experience with React and TypeScript for front-end development.\nSolid experience designing and consuming REST APIs, implementing business logic, and integrating applications with relational databases.\nExperience with Oracle, MySQL, or PostgreSQL.\nExperience with testing frameworks, debugging, and application performance optimization.\nGood understanding of secure coding principles, Git, and CI/CD pipelines.\nExperience working within Agile/Scrum development teams.\nA genuine interest in understanding business processes and functional requirements, with the ability to translate business needs into effective technical solutions.\nStrong analytical and problem-solving skills, combined with a collaborative mindset and willingness to challenge or clarify requirements when needed\nBusiness-fluent English with strong communication skills and the ability to collaborate effectively with both technical and non-technical stakeholders.\nBenefits\nWhat are we offering to our UniQue IT people?\nPeople-first approach and open environment to express your ideas\nWork-life balance and a hybrid work model\nContinuous training and development\nOpportunities to join innovation initiatives\nTicket restaurant - meal vouchers\nCorporate laptop and equipment\nCorporate mobile phone subscription\nHealth and insurance plan for you and your family members\nEmployee consulting and guidance support by Ergonomia\nDiscounts on the services and products of our Group’s companies\nGift vouchers for major life milestones\nSpecial work schedule on summer Fridays and birthdays\nOur UniQue IT people are the most valuable part of Uni Systems; their knowledge and experience has made us the leading and reliable systems integrator of today and has contributed to our steady financial growth. We have created and are maintaining a stable working environment for our employees, with countless opportunities to innovate and thrive. Our work culture recognizes our UniQue IT people, supports the free sharing of ideas and the flow of information via open communication, while appreciating and effectively utilizing the talents, skills and perspectives of each employee.\nAt Uni Systems, we are providing equal employment opportunities and banning any form of discrimination on grounds of gender, religion, race, color, nationality, disability, social class, political beliefs, age, marital status, sexual orientation or any other characteristics. Take a look at our Diversity, Equality & Inclusion Policy for more information.","description_format":"text","description_chars":4965,"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":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":["Hybrid work"],"hiring_locations":[{"name":"Greece","iso":"GR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Consulting & Digital Transformation","Systems Integrators"],"lifecycle":[{"event":"open","at":"2026-11-05T16:22:33Z"},{"event":"close","at":"2026-11-06T10:50:12Z"}],"visa":[],"liveness":null,"pay":null,"html_url":"https://alion.io/job/uni-systems-full-stack-developer-3","json_url":"https://alion.io/job/uni-systems-full-stack-developer-3.json","meta":{"generated_at":"2026-11-06T21:42:28Z","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":2486,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-07T00:00:00Z"}},"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":55545},"rest":"https://alion.io/mcp/rest/get_company?id=55545"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Funi-systems-full-stack-developer-3"},{"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%2Funi-systems-full-stack-developer-3"},{"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%2Funi-systems-full-stack-developer-3"},{"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/uni-systems-full-stack-developer-3\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Funi-systems-full-stack-developer-3"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3816741}},{"tool":"search_jobs","arguments":{"company":"unisystems.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3816741},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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