{"id":3339395,"url":"https://alion.io/job/the-cool-full-stack-engineer","title":"Full Stack Engineer","company":{"id":3903261,"name":"The COOL","domain":"thecool.com","url":"https://alion.io/company/the-cool","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":"middle","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_company_offices","remote_working_hours":{"label":"ET","utc_offset_min":-5,"utc_offset_max":-5},"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon CloudWatch","optional":false},{"name":"Amazon ECS","optional":false},{"name":"Amazon S3","optional":false},{"name":"AWS","optional":false},{"name":"AWS Lambda","optional":false},{"name":"CI/CD","optional":false},{"name":"Flyway","optional":false},{"name":"Git","optional":false},{"name":"Java","optional":false},{"name":"PostgreSQL","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"Snowflake","optional":false},{"name":"Spring Boot","optional":false},{"name":"Spring Data JPA","optional":false},{"name":"Spring Security","optional":false},{"name":"Tailwind CSS","optional":false},{"name":"TypeScript","optional":false},{"name":"Vite","optional":false},{"name":"JavaScript","optional":true}],"status":"live","first_seen_at":"2026-10-27T11:33:34Z","employer_posted_date":null,"last_verified_at":"2026-10-27T11:33:34Z","board_verified":false,"closed_at":null,"days_open":8,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":8},"description":"About the COOL companyThe COOL company is a global leader in AI-powered advertising technology, helping brands, agencies, and publishers simplify advertising and amplify performance.\nPowered by COOL AI, our intelligent platform unifies creative generation, media activation, optimization, and attribution into one continuously learning system. Instead of relying on fragmented tools and manual campaign management, COOL AI executes thousands of real-time micro-optimizations across search, social, display, video, and connected TV—helping customers launch faster, optimize continuously, and achieve stronger business outcomes.\nOur innovation and growth have earned industry-wide recognition, including being named a 7-time recipient of the Inc. 5000 list of America's Fastest-Growing Private Companies, a 2-time Deloitte Technology Fast 500 honoree, recognized on Crain's New York Fast 50, honored by the Digiday Media Awards for helping modernize digital media, and named one of Adweek's Top 10 Fastest Growing Solution Providers globally.\nWe're building the future of advertising, where every signal becomes intelligence and every optimization drives performance. As we continue to grow globally, we're looking for curious, ambitious people who want to work with cutting-edge AI technology, solve complex challenges, and help redefine what's possible in modern advertising.\nAbout the RoleWe are looking for a Mid-Senior Full-Stack Engineer to join our Product Engineering team, reporting to the Engineering Manager (Bi Yoo). This role is responsible for building and maintaining the web applications that power our advertising platform, including the Cool AI campaign management system, billing and invoicing module, and advertiser-facing dashboards. The Full-Stack Engineer will work across our frontend (React/TypeScript) and backend (Java/Spring Boot) stack, delivering features end-to-end from database schema design through API development to polished UI implementation.\nChallenges and OpportunitiesThis role spans the full product surface of a growing ad tech platform. You'll build features that advertisers interact with daily — campaign creation and launch workflows, real-time performance dashboards, multi-platform account\nintegrations (Google Ads, Meta, Adform), and automated billing systems. There is significant opportunity to shape product architecture as we scale to support new advertising channels, expand our AI-driven campaign optimization, and\nonboard enterprise clients with complex billing and permissions requirements.\nResponsibilities and Duties\nDesign and implement full-stack features across React (TypeScript, Tailwind CSS, Vite) and Spring Boot (Java 17, PostgreSQL) codebases\n\nBuild and maintain RESTful APIs with proper authentication, authorization (role-based access control), and input validation\n\nDesign and evolve PostgreSQL database schemas using Flyway migrations, including JSONB modeling for flexible domain objects\n\nDevelop responsive, accessible UI components following existing design patterns and component libraries\n\nIntegrate with third-party advertising platform APIs (Google Ads, Meta Marketing API, Adform) for account management and data synchronization\n\nImplement and maintain OAuth flows for external platform connections\n\nBuild complex business logic including billing calculations, invoice generation, and payment processing workflows\n\nWrite efficient database queries and optimize application performance for large datasets\n\nCollaborate with the data engineering team on Snowflake integrations for analytics and reporting features\n\nParticipate in code reviews, providing constructive feedback and maintaining code quality standards\n\nTroubleshoot production issues across the full stack using AWS CloudWatch logs and application monitoring\n\nContribute to CI/CD pipeline maintenance and deployment processes\n\nQualificationsProfessional Competencies\n4-6 years of professional software engineering experience in full-stack web development\n\nStrong proficiency in Java (11+) and Spring Boot, including Spring Security, Spring Data JPA, and RESTful API design\n\nStrong proficiency in React (16+) with TypeScript, including hooks, state management, and modern component patterns\n\nSolid experience with PostgreSQL including schema design, query optimization, indexing strategies, and migrations\n\nExperience with CSS frameworks (Tailwind CSS preferred) and building responsive layouts\n\nFamiliarity with cloud services, particularly AWS (S3, SES, Lambda, ECS, CloudWatch)\n\nExperience integrating with third-party REST APIs and OAuth 2.0 authentication flows\n\nUnderstanding of Git workflows, pull request processes, and collaborative development practices\n\nAbility to independently own features from technical design through deployment\n\nStrong debugging skills across frontend and backend, including browser DevTools and server-side logging\n\nCultural Competencies\nMust be able to work primarily between the hours of 9:30 AM - 6:30 PM ET\n\nMust have a player/coach mentality, willing to both execute and lead\n\nAbility to juggle multiple projects concurrently and set and meet deadlines\n\nSkilled at receiving and providing direct feedback\n\nCollaborative mindset and great teamwork skills\n\nEntrepreneurial & adaptable; great learning skills\n\nCurious, research-minded, data-informed\n\nAble to search for possible solutions and apply them\n\nCreative confidence\n\nProactive communicator\n\nA sense of humor and a love of online culture\n\nThrives in a start-up culture\n\nOriginally posted on Himalayas","description_format":"text","description_chars":5531,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Home Appliances"],"lifecycle":[{"event":"open","at":"2026-10-27T14:28:30Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":7,"expected_fill_days":28,"reasons":["seen:7","win:early"],"computed_at":"2026-11-04T06:34:25Z"},"pay":null,"html_url":"https://alion.io/job/the-cool-full-stack-engineer","json_url":"https://alion.io/job/the-cool-full-stack-engineer.json","meta":{"generated_at":"2026-11-05T01:11:41Z","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":1387,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-06T00:00:00Z"}},"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":3903261},"rest":"https://alion.io/mcp/rest/get_company?id=3903261"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fthe-cool-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%2Fthe-cool-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%2Fthe-cool-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/the-cool-full-stack-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fthe-cool-full-stack-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3339395}},{"tool":"search_jobs","arguments":{"company":"thecool.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3339395},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. Docs: https://alion.io/developers"}}