{"id":129982,"url":"https://alion.io/job/playgroundai-seniorstaff-full-stack-engineer","title":"Senior/Staff Full Stack Engineer","company":{"id":48444,"name":"Playgroundai","domain":"playgroundai.com","url":"https://alion.io/company/playgroundai","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"staff","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New York, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":170000,"max":270000,"currency":"USD","period":"year","gross":null,"usd_annual":270000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"GCP","optional":false},{"name":"JavaScript","optional":false},{"name":"Node JS","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-08-21T12:52:14Z","employer_posted_date":"2026-08-21","last_verified_at":"2026-10-17T16:51:16Z","board_verified":true,"closed_at":null,"days_open":57,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":57},"description":"About Playground\nPlayground is working to make excellent child care accessible to all. Playground has built best in class software to manage all aspects of running a child care business. Playground has raised millions of dollars in funding, has several Statewide contracts, and is working with thousands of schools across the country. Our founders were recently recognized by Forbes as 30 under 30, and our work has been recognized across the country.\nPlayground is at an inflection point, growing at a quick pace, and we are looking to expand our engineering team as quickly as possible. Playground is a team of owners who are not afraid to dive into large, complex projects.\nJob Description\nAs part of Playground's engineering team, you will be responsible for building new products from zero-to-one across the full stack, from the APIs and backend services that power our platform, to the frontend experiences that delight our users. You'll play a critical role in shaping the future of child care, working directly on products relied on by thousands of child care businesses, agencies, and government organizations.\nThis role spans the entire stack. You'll own projects end-to-end: designing and scaling core backend systems, building performant and maintainable frontend features, and everything in between. We're looking for self-starters who thrive on ownership, operate with urgency, and are excited to use modern AI coding tools to dramatically increase their leverage and output.\nResponsibilities\nCollaborate with a cross-functional team to design and build features end to end with a strong focus on customer needs and product impact\n\nWrite clean, maintainable, and efficient code across the stack - React and TypeScript on the frontend, Node.js and Express on the backend.\n\nLead the design and delivery of mission-critical backend APIs and services, with a focus on performance, security, and long-term maintainability.\n\nBuild and improve frontend features in our web app, contributing to a best-in-class user experience for thousands of child care businesses\n\nParticipate in code reviews to maintain code quality and share knowledge across the team.\n\nInteract directly with customers to gather feedback and understand their needs.\n\nProactively identify technical debt and drive improvements across both frontend and backend architecture.\n\nRequirements\n5+ years of experience in full stack or software development, with meaningful exposure to both frontend and backend technologies.\n\nProficiency in React and TypeScript (or JavaScript) on the frontend.\n\nStrong proficiency in Node.js and Express (or similar backend frameworks).\n\nExperience designing and maintaining RESTful APIs in production environments.\n\nStrong experience operating systems in the cloud (GCP preferred but not essential), including infrastructure, performance tuning, and reliability best practices.\n\nAbility to ship quickly and focus on work that has the highest impact\n\nStrong problem-solving skills, attention to detail, and excellent communication abilities.\n\nDemonstrated ownership of high-impact, complex projects from concept to reality.\n\nCompensation\nThe annual salary range for this position is $170,000 - $270,000, subject to standard withholding and applicable taxes.\n\nJob level and actual compensation will be decided on factors including, but not limited to, individual qualifications objectively assessed during the interview process (including skills and prior relevant experience, potential impact, and scope of role), market demands, and specific work location. The listed range is a guideline, and the range for this role may be modified.\n\nWhy Join Playground\nCompetitive salary\n\n3 weeks of PTO\n\nHealth, vision, and dental benefits\n\n$1200/year education stipend\n\nFree lunch daily\n\nNew MacBook\n\nCollaborative and supportive work culture with a high level of autonomy and room for growth\n\nHelp accelerate our mission to make excellent child care accessible to all!\n\nHow to Apply\nIf you're excited to join a mission-driven, early-stage company where ownership, craftsmanship, and empathy are at the center of what we do, apply now. The Playground Team is fully in-office in Union Square, NYC. Please ensure you are open to a fully in-person role before applying.\nCheck out our journey to learn more about our co-founders Dan, Josh, and Sasha.","description_format":"text","description_chars":4340,"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":["Apple Macbook"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Generative Image"],"lifecycle":[{"event":"open","at":"2026-08-21T12:52:14Z"}],"visa":[],"liveness":{"score":25,"band":"fade","label":"Fading","p_open":1,"p_active":0.56,"p_room":0.45,"age_days":56,"expected_fill_days":30,"reasons":["conf:1","win:tail"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":270000,"is_top_pay":true},"html_url":"https://alion.io/job/playgroundai-seniorstaff-full-stack-engineer","json_url":"https://alion.io/job/playgroundai-seniorstaff-full-stack-engineer.json","meta":{"generated_at":"2026-10-17T17:32:39Z","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":24109,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":48444},"rest":"https://alion.io/mcp/rest/get_company?id=48444"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fplaygroundai-seniorstaff-full-stack-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%2Fplaygroundai-seniorstaff-full-stack-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%2Fplaygroundai-seniorstaff-full-stack-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/playgroundai-seniorstaff-full-stack-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fplaygroundai-seniorstaff-full-stack-engineer"}]}