{"id":2003582,"url":"https://alion.io/job/paypay-corp-backend-engineer","title":"Backend Engineer","company":{"id":3256181,"name":"Paypay Corp","domain":"paypay-corp.co.jp","url":"https://alion.io/company/paypay-corp","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"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":["India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Java","optional":false},{"name":"Python","optional":false},{"name":"Scala","optional":false},{"name":"Spring Boot","optional":false},{"name":"Apache Kafka","optional":true},{"name":"ArgoCD","optional":true},{"name":"BigQuery","optional":true},{"name":"Docker","optional":true},{"name":"Draw.io","optional":true},{"name":"DynamoDB","optional":true},{"name":"Flyway","optional":true},{"name":"GCP","optional":true},{"name":"GitHub","optional":true},{"name":"Google BigQuery","optional":true},{"name":"Gradle","optional":true},{"name":"JavaScript","optional":true},{"name":"Jenkins","optional":true},{"name":"JUnit","optional":true},{"name":"Kibana","optional":true},{"name":"Kotlin","optional":true},{"name":"Kubernetes","optional":true},{"name":"LLM","optional":true},{"name":"Maven","optional":true},{"name":"MySQL","optional":true},{"name":"npm","optional":true},{"name":"Redis","optional":true},{"name":"Slack","optional":true},{"name":"Spark","optional":true},{"name":"TiDB","optional":true}],"status":"live","first_seen_at":"2026-10-07T12:13:58Z","employer_posted_date":null,"last_verified_at":"2026-10-07T12:13:58Z","board_verified":false,"closed_at":null,"days_open":3,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":3},"description":"Job Description:\n\nPayPay India is looking for a Backend engineer to work on our payment system to deliver the best payment experience for our customers.\n\nMain Responsibilities:\n\n- Design large scale systems with high complexity to support our high throughput applications.\n\n- Understand how to leverage infrastructure for solving such large scale problems.\n\n- Develop tools and contribute to open source wherever possible.\n\n- Adopt problem solving as a way of life - always go to root cause! Support the code you write in production.\n\nTech Stack:\n\n- We select the best combination of tech at times. Java, Kotlin, Scala\n\n- Spring Boot, JUnit, Reselience4j, Feign\n\n- MySQL/AuoraDB, DynamoDB, ELK, Kafka, Redis, TiDB\n\n- Docker, Kubernetes, ArgoCD, AWS, GCP\n\n- GitHub, IntelliJ, Gradle, Maven, npm/yarn, Flyway, Jenkins, snyk\n\n- Bigquery, Kibana, Spark\n\n- PlantUML, draw.io, miro.com\n\n- Slack, Zoom\n\nQualifications:\n\n- 4+ years of Experience in using Java under professional environment, or if you are non-Java user, excellent skills in generalized programming languages, such as Scala, Python and Go.\n\n- Interest and ability to learn other coding languages as needed.\n\n- Experience with NoSQL databases and distributed cache.\n\n- Strong fundamentals in data structures, algorithms and object oriented programming.\n\n- In-depth understanding of concurrency and distributed computing.\n\n- Degree in Computer Engineering or Computer Science or 5+ years equivalent experience in SaaS platform development.\n\n- Business of English or Japanese\n\nPreferred Qualifications :\n\n- Experience with implementing platform components such as RESTful APIs, Pub/Sub Systems, Database Clients.\n\n- Experience with AWS services.\n\n- Experience in working for system development in finance, payment, or similar industries\n\n- Experience in system design, development of web system which handles massive amount of transactions or requires scalability\n\n- Experience in microservices\n\n- Leverage AI/LLM-based tools in daily workflows (e.g., code development, reviews, testing, debugging, documentation), while ensuring human oversight, judgment, and accountability drive the final product.\n\nRemarks :\n\n- Please note that you cannot apply for PayPay (Japan-based jobs) or other positions in parallel or in duplicate.\n\nPayPay 5 senses :\n\n- Please refer PayPay 5 senses to learn what we value at work.\nSkills\nScala, Python, Golang, Backend Architecture, NoSQL, Microservices Architecture, Payment System, Java, Spring Boot, Data Structure, Algorithm","description_format":"text","description_chars":2512,"description_truncated":false,"requirements":{"experience_years_min":5,"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":[],"lifecycle":[{"event":"open","at":"2026-10-07T12:29:30Z"}],"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":19,"reasons":["seen:2","win:early"],"computed_at":"2026-10-10T05:45:15Z"},"pay":null,"html_url":"https://alion.io/job/paypay-corp-backend-engineer","json_url":"https://alion.io/job/paypay-corp-backend-engineer.json","meta":{"generated_at":"2026-10-10T15:44:25Z","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":"assistant_verified","counted_by":"address","units_charged":1,"used_today":3637,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-11T00:00:00Z"}},"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":3256181},"rest":"https://alion.io/mcp/rest/get_company?id=3256181"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fpaypay-corp-backend-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%2Fpaypay-corp-backend-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%2Fpaypay-corp-backend-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/paypay-corp-backend-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fpaypay-corp-backend-engineer"}]}