{"id":120920,"url":"https://alion.io/job/vosyn-full-stack-web-development-expert-cross-platform-focus-subject-matter-expert","title":"Full-Stack Web Development Expert (Cross-Platform Focus) — Subject Matter Expert","company":{"id":6791,"name":"Vosyn","domain":"vosyn.ai","url":"https://alion.io/company/vosyn","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Breezy","truth_index":{"grade":"D","score":40,"open_postings":81,"ghost_share":1,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["CA"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":78000,"max_usd":141000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":84},"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Cassandra","optional":false},{"name":"Django","optional":false},{"name":"Docker","optional":false},{"name":"Electron","optional":false},{"name":"JavaScript","optional":false},{"name":"MySQL","optional":false},{"name":"Next.js","optional":false},{"name":"Node JS","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"SQL","optional":false},{"name":"Edge AI","optional":true},{"name":"WebSockets","optional":true}],"status":"live","first_seen_at":"2026-01-29T20:40:19Z","employer_posted_date":"2026-01-29","last_verified_at":"2026-10-18T12:08:20Z","board_verified":true,"closed_at":null,"days_open":261,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":261},"description":"Job Title: Full-Stack Web Development Expert (Cross-Platform Focus)\nLevel: Senior SME\nDepartment: Software Development\nStatus: Contract (10-15 hours/week)\nWork location: Fully Remote\nCompensation: Hourly ($250)\nCompany Overview: At Vosyn, we embrace the exciting, game-changing world of Artificial Intelligence, driving innovation and pioneering impactful projects across various industries. Our incubator, AI Venture Lab, nestled in the heart of Office146.com, is a crucible of entrepreneurial spirit, supported by intelligent processes and industry-leading best practices. We believe in fostering a culture of flexibility, continuous improvement, and solution-focused strategies. Here, every idea is welcomed, nurtured, and has the potential to scale to new heights. Currently, we're at the forefront of a significant IPO endeavor, a truly unicorn in the making. We invite you to be part of our journey and leave your imprint on the future of AI. At Vosyn, you will have the opportunity to engage with a fast-growing global organization with diversity of thought, experience, and cultures.\nAbout the Role: We are seeking an experienced Full-Stack Web Development Expert to serve as a trusted advisor and mentor for our tech leads and team leads. In this role, you will provide strategic technical guidance across the entire web development stack, sharing your deep expertise in modern web technologies, architectures, and full-stack development best practices. Your guidance will ensure our projects are performant, scalable, maintainable, and aligned with industry standards, particularly in the realm of cross-platform application development.\nKey Responsibilities:\nGuide the team in evaluating and adopting optimal tech stacks for full-stack web development, considering both current and emerging technologies, with a focus on cross-platform compatibility\nProvide expert-level mentorship on all aspects of cross-platform web application development, from front-end frameworks and state management to back-end architecture and API design\nLead architectural decisions and design patterns to optimize scalability, performance, maintainability, and security across the entire application stack\nAdvise on database selection and management strategies, including both SQL and NoSQL solutions\nShare best practices for API design and development, including RESTful principles, versioning, and documentation\nOffer guidance on implementing media streaming solutions using DASH and HLS\nProvide expertise in implementing robust authentication and authorization mechanisms\nShare insights on front-end performance optimization techniques and testing methodologies\nRequired Qualifications:\n7+ years of proven experience in full-stack web application development, with emphasis on cross-platform applications\nStrong proficiency in modern JavaScript frameworks like Next.js and React; familiarity with Electron\nIn-depth understanding of client-server architecture, containerization using Docker, backend REST API development\nExpertise in Django and Python\nExperience with both relational (PostgreSQL, MySQL) and non-relational (MongoDB, Cassandra) databases\nHands-on expertise in implementing media streaming solutions using DASH and HLS\nProven experience in implementing secure coding practices and authentication/authorization mechanisms\nStrong understanding of various testing methodologies and tools\nDemonstrated success in providing technical leadership and mentoring\nExcellent communication and problem-solving skills\nPreferred Qualifications:\nExperience with WebSocket-based real-time systems\nExpertise in front-end performance optimization techniques\nExperience with cloud deployment and scaling strategies\nKnowledge of modern state management solutions\nExperience in mentoring development teams\nAdditional Perks:\nBe part of the invigorating journey of a pre-seed AI startup in stealth mode\nEngage directly with senior management and strategic advisory board members\nGain valuable experience in the bleeding-edge AI space\nRemote-first culture with flexible working arrangements\nDEI and Workplace Safety: At Vosyn Inc., we are committed to fostering a diverse, equitable, and inclusive workplace where every employee feels valued and supported. We believe that diversity of thought, background, and experience enriches our company culture and enhances innovation. We are an equal-opportunity employer and encourage candidates from all walks of life to apply. As part of our commitment to creating a safe and healthy work environment, we prioritize workplace safety, adhering to all relevant regulations and promoting a culture of responsibility. We believe that a safe and inclusive workplace is essential for the well-being and success of our team members.\nRecruitment Process:\nInitial Screening: Review of application and preliminary assessment\nVideo Interview: In-depth discussion of technical expertise and role expectations\nTechnical Panel Interview: Deep dive into technical experience and approach to architecture/design challenges\nFinal Selection: Assessment of overall fit and alignment\nOffer and Onboarding: Equity compensation details and onboarding process.\nJoin a dynamic global organization that champions diversity in thought, experience, and culture. Our team is composed of top experts from around the world. We invite you to leverage your expertise, mentor future leaders, and thrive with us in this exciting journey.\n\n Apply Now:\nPlease apply via our career site: Vosyn Careers","description_format":"text","description_chars":5490,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Flexible schedule"],"hiring_locations":[{"name":"Canada","iso":"CA","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Speech & Audio AI","Translation Services","Multimodal AI"],"lifecycle":[],"visa":[],"liveness":{"score":5,"band":"cold","label":"Long shot","p_open":1,"p_active":0.183,"p_room":0.28,"age_days":260,"expected_fill_days":39,"reasons":["conf:1","stale_co","ghost","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/vosyn-full-stack-web-development-expert-cross-platform-focus-subject-matter-expert","json_url":"https://alion.io/job/vosyn-full-stack-web-development-expert-cross-platform-focus-subject-matter-expert.json","meta":{"generated_at":"2026-10-18T13:51:10Z","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":20581,"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":6791},"rest":"https://alion.io/mcp/rest/get_company?id=6791"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fvosyn-full-stack-web-development-expert-cross-platform-focus-subject-matter-expert"},{"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%2Fvosyn-full-stack-web-development-expert-cross-platform-focus-subject-matter-expert"},{"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%2Fvosyn-full-stack-web-development-expert-cross-platform-focus-subject-matter-expert"},{"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/vosyn-full-stack-web-development-expert-cross-platform-focus-subject-matter-expert\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fvosyn-full-stack-web-development-expert-cross-platform-focus-subject-matter-expert"}]}