{"id":984786,"url":"https://alion.io/job/sumup-senior-android-engineer-kmp","title":"Senior Android Engineer - KMP","company":{"id":2055,"name":"SumUp","domain":"sumup.com","url":"https://alion.io/company/sumup","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":80,"open_postings":113,"ghost_share":0.009,"stale_share":0.788,"repost_share":0.018,"time_to_fill_p50_days":42,"computed_at":"2026-10-29T05:49:05Z"}},"role":"Mobile","role_family":"Mobile","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":["Berlin, Germany"],"countries":["DE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Jetpack Compose","optional":false},{"name":"Kotlin","optional":false},{"name":"Kotlin Coroutines","optional":false},{"name":"Kotlin Multiplatform","optional":false},{"name":"MVI","optional":false},{"name":"MVVM","optional":false},{"name":"Reactive Programming","optional":false}],"status":"live","first_seen_at":"2025-11-12T13:57:28Z","employer_posted_date":"2026-10-21","last_verified_at":"2026-10-30T01:57:42Z","board_verified":true,"closed_at":null,"days_open":351,"trust":{"level":"stale","repost_count":1,"flags":["stale"],"days_open":350},"description":"About the team\nSumUp’s Point-of-Sale (POS) solution empowers cafes, shops, bars, hair salons, and other businesses to operate efficiently and grow. It offers a wide range of features, including product catalogs, inventory management, business analytics, compliance support, and loyalty tools.\nOur POS solution integrates seamlessly into the SumUp SuperApp, which supports both our proprietary register hardware and mobile devices like tablets and phones.\nAs a Senior Android Developer, you’ll collaborate with a dynamic, cross-functional team of Product Managers, Product Designers, Engineering Managers, and fellow engineers.\nAbout the role\nWe’re evolving toward a Kotlin Multiplatform (KMP) strategy, enabling shared development across Android and iOS. In this role, you’ll learn, refine, and help implement this technology, shaping the future of our mobile apps.\nYou’re a developer who values user-centric design, precision, and seamless collaboration. You bring structure to communication and thrive in a cross-functional environment. \nThis role is on-site in Berlin, where face-to-face interactions spark innovation and teamwork.\nWhat you’ll do\nBuild new features for the item catalog within the SumUp SuperApp\nHelp improve the architecture of the application and contribute to our Kotlin Multiplatform strategy\nEnhance and maintain our unified android app, distributed across 60+ countries, ensuring high-quality, scalable solutions\nShape the product’s evolution by identifying opportunities for improvement and contributing to daily decision-making\nWrite thorough documentation and implement robust testing for features before shipping\nCollaborate closely with Designer, Product Manager and Android engineers to deliver a unified UX experience across platforms\nCoach and mentor other engineers\nYou’ll thrive in this role if:\nYou have 8+ years experience in mobile engineering with Android and Kotlin.\nYou have 2+ years of experience working with Jetpack Compose.\nYou have a solid understanding of software design patterns (e.g., MVVM, MVI) and expertise in building modular, scalable app architectures.\nYou have good knowledge of reactive programming (Flow, Coroutines and Concurrency).\nYou have a strong grasp of testing best practices: knowing what to test, why, and how to write resilient tests.\nYou strive for clean code, and you are flexible to balance pragmatism and perfection.\nYou have a keen interest in multi-platform development usingKotlin Multiplatform.\nWhy you should join SumUp\nBe part of a company that values diversity and celebrates unique perspectives.\n\nWork with a global team of skilled professionals in an environment that fosters collaboration, learning, and growth.\n\nBe part of a global tribe building a banking solution from the ground up and delivering impactful solutions to the real-life problems of millions of SumUp merchants all over the world\n\nCareer growth and learning opportunities: We invest in your development through regular training, mentorship programs, SumUp University leadership cohort and a yearly learning budget (2,000 EUR)\n\n28 days paid leave + 1 for birthday\nSabbatical program for tenured SumUppers\n\nJoin a global team where you belong: Check out our D&I Initiatives and Employee Resource Groups such as Pride Club, SumAfro, Neurodiversity, Grupos Mais, Women in Tech, and more\n\nHealth & wellness benefits: in-house fitness classes, gym in the office, subsidized Urban Sports Club and available psychotherapy sessions\n\nA lot of other benefits such as Subsidized Public Transport Card, Kita placement assistance, Pension Scheme, Language Learning platform/courses etc.\n\nEnrollment onto our virtual stock ownership program - you will own a stake in SumUp’s future success.\n\nJob Application Tip\nWe recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.","description_format":"text","description_chars":4008,"description_truncated":false,"requirements":{"experience_years_min":8,"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":["POS Systems","Payment Processing & Gateways"],"lifecycle":[{"event":"open","at":"2026-09-16T23:14:54Z"},{"event":"close","at":"2026-10-12T11:47:16Z"},{"event":"reopen","at":"2026-10-21T12:45:28Z"}],"visa":[],"liveness":{"score":5,"band":"cold","label":"Long shot","p_open":1,"p_active":0.171,"p_room":0.28,"age_days":350,"expected_fill_days":42,"reasons":["conf:1","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-29T05:49:05Z"},"pay":null,"html_url":"https://alion.io/job/sumup-senior-android-engineer-kmp","json_url":"https://alion.io/job/sumup-senior-android-engineer-kmp.json","meta":{"generated_at":"2026-10-30T03:39:30Z","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":4932,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-31T00:00:00Z"}},"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":2055},"rest":"https://alion.io/mcp/rest/get_company?id=2055"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsumup-senior-android-engineer-kmp"},{"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%2Fsumup-senior-android-engineer-kmp"},{"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%2Fsumup-senior-android-engineer-kmp"},{"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/sumup-senior-android-engineer-kmp\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsumup-senior-android-engineer-kmp"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":984786}},{"tool":"search_jobs","arguments":{"company":"sumup.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":984786},"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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