{"id":1298469,"url":"https://alion.io/job/adtonos-mid-node-js-developer","title":"Mid Node.js Developer","company":{"id":1849879,"name":"AdTonos","domain":"adtonos.com","url":"https://alion.io/company/adtonos","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":"junior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_payroll_markers","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Gdynia, Poland"],"countries":["PL"],"hiring_countries":["PL"],"hiring_countries_total":1,"salary":{"min":15000,"max":17000,"currency":"PLN","period":"month","gross":null,"usd_annual":53184},"salary_estimate":null,"experience_years_min":1,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache Kafka","optional":false},{"name":"ClickHouse","optional":false},{"name":"Fastify","optional":false},{"name":"Nest.JS","optional":false},{"name":"Node JS","optional":false},{"name":"Redis","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"Angular","optional":true},{"name":"Docker","optional":true},{"name":"Express","optional":true},{"name":"Go","optional":true},{"name":"Helm","optional":true},{"name":"JavaScript","optional":true},{"name":"Kubernetes","optional":true},{"name":"React Native","optional":true},{"name":"React.js","optional":true},{"name":"Rust","optional":true},{"name":"Snowflake","optional":true}],"status":"live","first_seen_at":"2026-09-26T10:00:24Z","employer_posted_date":null,"last_verified_at":"2026-09-26T10:00:24Z","board_verified":false,"closed_at":null,"days_open":2,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":2},"description":"AdTonos - an innovative audio tech company\nAt AdTonos, we're passionate about revolutionizing audio advertising. Our cutting-edge platform empowers advertisers with targeted audio campaigns across podcasts, audiobooks, gaming, music, and radio streams worldwide. With a reach of over 450 million unique listeners and 120 millions ad playouts monthly, we're scaling fast and pushing the boundaries of what's possible in audio tech.\nLocation: Gdynia or remote\nWhat You'll Do:\nContribute to High-Traffic Systems: Deliver features for high-throughput platforms processing millions of daily HTTP requests and messages.\n\nWork with Modern Technologies: Hands-on development within a stack featuring Kafka, MongoDB, ClickHouse and Redis.\n\nFeature Ownership: Take ownership of new features from implementation to deployment with support from senior staff.\n\nEnhance Existing Systems: Implement new features, assist in platform scaling, optimize query performance and maintain system stability.\n\nRefactor & Improve: Actively contribute to code quality, write clean code and refactor existing modules for better maintainability.\n\nCollaborate & Share Knowledge: Participate in code reviews, pair programming and cross-functional team collaboration.\n\nWhat We're Looking For:\nMust-Have Skills:\nProficient in TypeScript and ES6+\n\nStrong working knowledge of Node.js and frameworks like Fastify (or Express/NestJS)\n\nSolid experience with SQL and NoSQL databases (query optimization, index management, basic schema design)\n\nPractical understanding of web scaling concepts: caching (Redis), load balancing, and async processing\n\nGood code review practices and collaborative mindset\n\nGood command of English (B2 and above)\n\nMinimum 1 year of professional backend development experience\n\nNice-to-Have Skills:\nKnowledge of Microservices and Messaging Systems like AMQP, Kafka\n\nExperience with OLAP (e.g. Druid, ClickHouse, Snowflake)\n\nFamiliarity with Angular, NestJS, or Express.js\n\nReact Native Experience\n\nGo or Rust\n\nDevOps Tools: Docker, Kubernetes, Helm\n\nStartup Experience\n\nWhy AdTonos?\nChallenging Projects: Our current stats are just the beginning! Engage in projects that push the limits of high traffic and innovative technologies.\n\nRich Tech Stack: Work with a diverse range of technologies (most are listed above)\n\nAutonomy & Ownership: Take charge of greenfield projects and make key technical decisions.\n\nCollaborative Environment: Join a small, self-organized team where your contributions truly matter.\n\nGrowth Opportunities: Be part of a fast-growing startup with plenty of room for personal and professional development.\n\nPerks:\nFlexible Working Conditions: Whether you're in Gdynia or prefer to work remotely, we support what you need to perform your best.\n\nOpen Communication: We're always open to discussing what you need to thrive in your role.\n\nReady to Make Waves in Audio Tech?\nJoin AdTonos and be a part of something big. Our recruitment process is streamlined to just one meeting, making it quick and straightforward for you to get started. Apply now and help us shape the future of audio advertising! Apply Today!","description_format":"text","description_chars":3120,"description_truncated":false,"requirements":{"experience_years_min":1,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Upper-Intermediate (B2)","optional":false}]},"benefits":["Flexible schedule","Growth opportunities","Professional development"],"hiring_locations":[{"name":"Poland","iso":"PL","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Commerce","Media & Entertainment","Marketplaces"],"lifecycle":[{"event":"open","at":"2026-09-26T10:31:54Z"}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":1,"expected_fill_days":20,"reasons":["seen:1","win:early","comp:junior"],"computed_at":"2026-09-28T05:45:00Z"},"pay":{"stated_usd_annual":53184,"is_top_pay":false},"html_url":"https://alion.io/job/adtonos-mid-node-js-developer","json_url":"https://alion.io/job/adtonos-mid-node-js-developer.json","meta":{"generated_at":"2026-09-29T01:47:39Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":1477,"day_limit":5000,"remaining_today":3523,"minute_limit":60,"resets_at":"2026-09-30T00:00:00Z"}}}