{"id":415,"url":"https://alion.io/job/limitbreak-senior-backend-engineer-core-services-game","title":"Senior Backend Engineer, Core Services (Game)","company":{"id":517,"name":"Limit Break","domain":"limitbreak.com","url":"https://alion.io/company/limitbreak","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"A","score":95,"open_postings":5,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":290,"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":"explicit","locations":["Tokyo, Japan"],"countries":["JP"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":43000,"max_usd":93000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":13},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon EKS","optional":false},{"name":"AWS","optional":false},{"name":"C#","optional":false},{"name":"Docker","optional":false},{"name":"Go","optional":false},{"name":"gRPC","optional":false},{"name":"JavaScript","optional":false},{"name":"Kubernetes","optional":false},{"name":"MySQL","optional":false},{"name":"Node JS","optional":false},{"name":"Redis","optional":false},{"name":"Unity","optional":false},{"name":"Unix","optional":false}],"status":"live","first_seen_at":"2024-06-14T05:34:12Z","employer_posted_date":"2024-06-14","last_verified_at":"2026-10-18T02:34:59Z","board_verified":true,"closed_at":null,"days_open":855,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":855},"description":"Senior Backend Engineer, Core Services (Game)\nLocation: Tokyo, Japan\nAbout us:\nDeep expertise. Personal and Industry evolution. Impeccable craft. These are Limit Break’s founding principles.\nLimit Break is founded by global industry leaders in mobile gaming. We are unlocking its potential beyond games to transform digital markets into real-world economies and digital worlds into vibrant communities who will take gaming economies for both players and traders to new limits. We combine the power of technology, and creative vision to create experiences that connect people from all corners of the globe.\nLimit Break is backed by leading investors that include Buckley Ventures & Paradigm Ventures. The adoption rate and a number of public and private partnerships is proving it to be the next wave of technology of the future and Gaming is leading the way.\nAbout the Role: \nLimit Break is looking for experienced backend systems software engineers to join our Core Services team. As a senior member of the team, you will be in a position to influence our best practices and processes, and to create a truly customer-driven culture from the ground up.\nThis is a unique opportunity for an intellectually curious and hardworking team player to help the organization truly shape engineering in blockchain technologies.\nResponsibilities:\nDesign, implement, and maintain backend services for a live mobile game using Go, gRPC, REST, protobuf, MySQL, Redis, and service-to-service APIs.\nOwn gameplay-adjacent backend systems such as inventory, IAP, live events, leaderboards, messaging, notifications, guild/social systems, scheduling, player state, and live configuration.\nBuild systems that are safe under liveops pressure: remote config, event launches, timed campaigns, content updates, rollbacks, partial failures, and client/server version mismatches.\nDesign APIs and data flows that are backwards compatible with live mobile clients and resilient to retries, duplicate requests, bad network conditions, and stale client state.\nDiagnose and resolve production issues involving logs, metrics, traces, database state, Redis state, service health, client reports, and live player impact.\nCollaborate closely with Unity client engineers, design, QA, production, data, and product leadership to turn ambiguous feature goals into reliable live-service behavior.\nImprove backend architecture, operational visibility, test coverage, deployment safety, and engineering quality through thoughtful design and code review.\nParticipate in incident response and post-launch support for live features, especially during high-volume events, releases, and time-sensitive campaigns.\nRequirements. Who you are and what you've done.\nB.S. in Computer Science, or a related field\n5+ years of software engineering experience, ideally in backend/server-side development with production services at high scale\nExperience architecting complex software solutions\nExperience across the full software development lifecycle from requirements definition through testing and deployment\nProficient with at least two programming languages, including one of the following: Go, Node.js, C#\nUnderstanding of relational databases and basic unix networking (files, sockets)\nExperience with Docker and containerization\nStrong sense of initiative and ownership\nA \"roll up your sleeves\" mindset to get the job done\nProficiency in English\nWhat an ideal candidate looks like:\nExperience with building online and fast moving mobile games \nExperience with AWS, Amazon EKS, and building cloud native applications\nExperience with Unity Game Development\nExperience working with Unity client teams\nExperience with full stack development","description_format":"text","description_chars":3687,"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":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[{"name":"Japan","iso":"JP","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Gaming","Game Development","GameFi"],"lifecycle":[{"event":"open","at":"2024-06-14T05:34:12Z"},{"event":"open","at":"2026-09-25T15:11:38Z"}],"visa":[],"liveness":{"score":10,"band":"cold","label":"Long shot","p_open":1,"p_active":0.373,"p_room":0.28,"age_days":855,"expected_fill_days":290,"reasons":["conf:1","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/limitbreak-senior-backend-engineer-core-services-game","json_url":"https://alion.io/job/limitbreak-senior-backend-engineer-core-services-game.json","meta":{"generated_at":"2026-10-18T05:02:35Z","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":7653,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":517},"rest":"https://alion.io/mcp/rest/get_company?id=517"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flimitbreak-senior-backend-engineer-core-services-game"},{"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%2Flimitbreak-senior-backend-engineer-core-services-game"},{"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%2Flimitbreak-senior-backend-engineer-core-services-game"},{"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/limitbreak-senior-backend-engineer-core-services-game\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flimitbreak-senior-backend-engineer-core-services-game"}]}