{"id":50213,"url":"https://alion.io/job/1global-senior-java-software-engineer","title":"Senior Java Software Engineer","company":{"id":6544,"name":"1GLOBAL","domain":"1global.com","url":"https://alion.io/company/1global","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":98,"open_postings":26,"ghost_share":0,"stale_share":0.077,"repost_share":0,"time_to_fill_p50_days":42,"computed_at":"2026-10-17T05:46:00Z"}},"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":["Berlin, Germany"],"countries":["DE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":64000,"max_usd":112000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":60},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Java","optional":false},{"name":"CI/CD","optional":true},{"name":"Docker","optional":true},{"name":"Git","optional":true},{"name":"Gitflow","optional":true},{"name":"Kubernetes","optional":true},{"name":"Rest API","optional":true}],"status":"live","first_seen_at":"2026-08-10T00:00:00Z","employer_posted_date":"2026-08-10","last_verified_at":"2026-10-17T09:59:16Z","board_verified":true,"closed_at":null,"days_open":68,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":68},"description":"About Us\n1GLOBAL is a technology-driven global mobile communications provider helping enterprises and consumer brands deliver seamless connectivity worldwide. Powered by a best-in-class telecom platform, proprietary eSIM technology, and its own mobile core network across 15 countries, 1GLOBAL operates as a fully regulated telecommunications provider in 43 countries.\nFounded in 2022, 1GLOBAL has rapidly become one of Europe's fastest-growing telecom technology companies, connecting more than 80 million people and devices globally. Our customers include leading banks, multinational enterprises, global retailers, travel companies, payment service providers, and digital-first businesses.\nHeadquartered in the Netherlands, with R&D hubs in Lisbon, Berlin, and São Paulo, 1GLOBAL employs over 550 professionals across 16 countries. With annual revenues exceeding US$200 million and a strong track record of profitability, we continue to invest in innovation, infrastructure, and international expansion as we redefine the future of global mobile connectivity.\n\nAbout the Team\nWe are looking for a talented engineer to join our Consumer Group. You will join a development team responsible for the product delivery and in-life management of our B2C (betterroaming) and B2B2C (API powering Revolut, nordVPN, etc.) products. The talented team is eager to learn and experiment with new technologies. We value teamwork and embrace a culture of fully owning our deliverables, meaning we are both autonomous and accountable for them.\nAbout the Role\nBuild high-impact features and contribute to the architecture design; aim towards resiliency, scalability, security and fault tolerance;\nAdvocate for high code quality, readability and high tests coverage;\nPromote best practices for a high-scale web (or mobile) environment;\nWork with an Agile methodology;\nIdentify areas of improvement in the codebase and promote them through seamless integrations, documenting solutions and new flows;\nMentor junior members when needed and contribute with meaningful reviews.\nRequirements\nAbout You\n5+ years of experience in Java software development;\nExperience with unit/integration/e2e testing (test-driven development is a plus);\nProficiency with REST APIs, both in implementing and consuming the interfaces;\nExperience with development tools and processes (Git-flow, peer reviewing);\nFamiliarity with relational databases, CI/CD flows, Git, Docker, and Kubernetes;\nGood understanding of cloud services and scalable infrastructure;\nExcellent communication skills (fluent in English, both written and spoken), with a self-motivated and autonomous mindset.\nBenefits\nWhy 1GLOBAL?\nGrowth Opportunities: Advance your career in one of the fastest growing telecommunications companies, expanding over 50% year-on-year under the leadership of successful tech entrepreneurs.\nMajor Transaction Exposure: Be in the driver’s seat for transactions that will have an impact on the future telco industry.\nWork with a Talented Team: From the Board and the Founders to the Senior Management Team, you will collaborate daily with the most capable and renowned external advisors and constantly being exposed to talented and driven individuals.\nDynamic Work Environment: Thrive in a collaborative, fast-paced workplace where innovation is encouraged, and every contribution counts.\nProfessional Development: Work alongside industry experts to enhance your skills and knowledge in a cutting-edge field.\nInternational Experience: Gain opportunities to work in different 1GLOBAL offices around the world as you grow within the company.\nOpen Communication Culture: Join a team where your ideas are heard, and open dialogue is encouraged, fostering a supportive and transparent work environment.\n Get Things Done Attitude: Be part of a results-driven team that values efficiency, creativity, and the drive to make a tangible impact in the industry.\n\n1GLOBAL is an equal opportunity employer, we value your character as much as your talent. Diversity drives our innovation, and we offer a collaborative, dynamic, and international work environment. We are excited for you to join our mission to revolutionise connectivity globally.","description_format":"text","description_chars":4189,"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":["Growth opportunities","Professional development"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["MVNO","IoT Connectivity"],"lifecycle":[{"event":"open","at":"2026-08-07T00:00:00Z"}],"visa":[],"liveness":{"score":29,"band":"fade","label":"Fading","p_open":1,"p_active":0.793,"p_room":0.36,"age_days":68,"expected_fill_days":42,"reasons":["conf:3","velocity","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/1global-senior-java-software-engineer","json_url":"https://alion.io/job/1global-senior-java-software-engineer.json","meta":{"generated_at":"2026-10-17T11:25:17Z","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":14867,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":6544},"rest":"https://alion.io/mcp/rest/get_company?id=6544"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2F1global-senior-java-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%2F1global-senior-java-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%2F1global-senior-java-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/1global-senior-java-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2F1global-senior-java-software-engineer"}]}