{"id":1996421,"url":"https://alion.io/job/hard-rock-digital-senior-web-mobile-developer","title":"Senior Web & Mobile Developer","company":{"id":672978,"name":"Hard Rock Digital","domain":"hardrockdigital.com","url":"https://alion.io/company/hardrockdigital","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Recruitee","truth_index":{"grade":"B","score":75,"open_postings":3,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":28,"computed_at":"2026-10-08T05:49:30Z"}},"role":"Mobile","role_family":"Mobile","seniority":"senior","employment_type":"contractor","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":[],"countries":[],"hiring_countries":["PL"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":54000,"max_usd":97000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":21},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"CI/CD","optional":false},{"name":"GraphQL","optional":false},{"name":"JavaScript","optional":false},{"name":"React Native","optional":false},{"name":"Redux","optional":false},{"name":"Rest API","optional":false},{"name":"State Management","optional":false},{"name":"TypeScript","optional":false},{"name":"WebSockets","optional":false},{"name":"React.js","optional":true},{"name":"Webpack","optional":true}],"status":"live","first_seen_at":"2026-10-07T08:42:23Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-10-09T04:23:29Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Location: Poland only, fully remote\nJob Type: B2B, full time\nOverview\nHard Rock Digital is a fiercely focused team working to become the best online sportsbook, casino, and social gaming company in the world. We're building a deeply curious team with a passion for learning, operating, and building new products and technologies for millions of consumers. We're customer-obsessed - we care about each customer interaction, experience, behavior, and insight, and strive to ensure we're always acting authentically.\nRooted in the kindred spirits of Hard Rock and the Seminole Tribe of Florida, Hard Rock Digital taps a brand known the world over as the leader in gaming, entertainment, and hospitality. We're taking that foundation of success and bringing it to the digital space - ready to join us?\nWhat’s the position?\nWe’re looking to engage a Senior Web & Mobile Engineer based in Poland on a B2B contract basis to support our growing technology function. This is an opportunity to help build and evolve customer-facing experiences across web and mobile, alongside internal Back Office applications used to operate and manage our casino platform.\nThe engagement requires strong React.js expertise and extensive React Native experience, with the ability to deliver across browser-based applications, native mobile platforms, and operational tooling.\nYou will collaborate closely with Product Management, Design, QA, Backend Engineering, Casino Operations, and other stakeholders to deliver secure, performant, and user-centric solutions. The scope includes customer-facing products and Back Office capabilities supporting day-to-day casino operations, configuration, content management, and operational workflows.\nWe’re seeking an experienced engineering professional who has delivered production-grade applications using both React.js and React Native, understands the full client development lifecycle, and can work confidently across web, cross-platform mobile, native platform requirements, and complex internal web applications.\nKey Responsibilities:\nWork in an agile, cross-functional team to deliver the best possible platform experience across web, iOS and Android.\n\nDevelop and maintain high-performance web applications in React.js and mobile applications in React Native using TypeScript.\n\nBreak down features into requirements, contribute to estimation, refine user stories, and help define appropriate test coverage.\n\nDevelop frontend and mobile code to a high standard and perform code reviews for other engineers.\n\nCollaborate with Backend Developers and Architects to design APIs and solve technical challenges across REST, GraphQL and WebSocket integrations.\n\nSupport QA, Product and Release Management in moving development items safely to production.\n\nBuild and maintain mobile capabilities such as push notifications, background processing/loading and offline/local content storage.\n\nParticipate in continuous integration and delivery for web and for Apple App Store / Google Play Store releases.\n\nUse analytics, debugging and performance tooling to understand and continuously improve the end-user experience.\n\nCommunicate effectively and proactively in English with Engineering Managers, Product Owners and other stakeholders.\n\nWork effectively in a highly regulated, high-traffic environment.\n\nRequirements\nWhat are we looking for?\nWe are looking for an engineer who is willing to tackle problems with innovative ideas and high-quality technical implementations. You will not solely be focused on what we are building now but also understands where the product is going and how technical choices affect the customer experience across platforms.\nYou will have:\n5+ years of professional frontend and/or mobile application development experience, with substantial recent production experience across both web and mobile.\n\nStrong React.js expertise and 3+ years of production experience developing React Native applications with TypeScript.\n\nStrong TypeScript and JavaScript knowledge, plus solid HTML and CSS experience.\n\nExtensive experience with state management in large applications using MobX, Redux or similar tools.\n\nStrong experience integrating REST, GraphQL and WebSocket APIs.\n\nExperience building secure, performant, user-centric applications at scale.\n\nStrong understanding of the client development lifecycle, including application structure, platform and device APIs, debugging, performance, security, testing and deployment.\n\nStrong knowledge of client-server architecture and proven ability to contribute to technical and application architecture decisions.\n\nStrong communication skills, both written and verbal.\n\nBachelor’s degree in Computer Science or a related field, or equivalent practical experience.\n\nNice to have\nExperience in gaming, sportsbook, fintech or another high-traffic, regulated environment.\n\nStrong browser-based debugging and web performance testing experience.\n\nFamiliarity with Webpack and modern frontend/mobile testing libraries.\n\nExperience with MobX in production.\n\nExposure to backend or full-stack development and API design.\n\nExperience mentoring other engineers or taking technical ownership across web and mobile workstreams.","description_format":"text","description_chars":5196,"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":[{"language":"English","level":"All levels","optional":false}]},"benefits":[],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-07T09:15:34Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":0,"expected_fill_days":28,"reasons":["conf:1","velocity","win:early"],"computed_at":"2026-10-08T05:49:30Z"},"pay":null,"html_url":"https://alion.io/job/hard-rock-digital-senior-web-mobile-developer","json_url":"https://alion.io/job/hard-rock-digital-senior-web-mobile-developer.json","meta":{"generated_at":"2026-10-09T04:26:11Z","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","counted_by":"address","units_charged":1,"used_today":4105,"day_limit":5000,"remaining_today":895,"minute_limit":60,"resets_at":"2026-10-10T00:00:00Z"}},"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":672978},"rest":"https://alion.io/mcp/rest/get_company?id=672978"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fhard-rock-digital-senior-web-mobile-developer"},{"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%2Fhard-rock-digital-senior-web-mobile-developer"},{"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%2Fhard-rock-digital-senior-web-mobile-developer"},{"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/hard-rock-digital-senior-web-mobile-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fhard-rock-digital-senior-web-mobile-developer"}]}