{"id":2439066,"url":"https://alion.io/job/pubmatic-senior-software-engineer-java-api-developer","title":"Senior Software Engineer - Java API developer","company":{"id":5112,"name":"PubMatic","domain":"pubmatic.com","url":"https://alion.io/company/pubmatic","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":75,"open_postings":28,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-20T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Pune, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":18000,"max_usd":42000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":159},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"AI Agents","optional":false},{"name":"CI/CD","optional":false},{"name":"Docker","optional":false},{"name":"Fine-tuning","optional":false},{"name":"Git","optional":false},{"name":"Hibernate","optional":false},{"name":"Java","optional":false},{"name":"Jenkins","optional":false},{"name":"JUnit","optional":false},{"name":"Kubernetes","optional":false},{"name":"Linux","optional":false},{"name":"Machine Learning","optional":false},{"name":"Maven","optional":false},{"name":"MySQL","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Prompt Engineering","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"Recommender Systems","optional":false},{"name":"Rest API","optional":false},{"name":"Spring Boot","optional":false},{"name":"SQL","optional":false},{"name":"Unix","optional":false}],"status":"live","first_seen_at":"2026-07-23T17:10:28Z","employer_posted_date":"2026-09-17","last_verified_at":"2026-10-20T20:08:24Z","board_verified":true,"closed_at":null,"days_open":89,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":89},"description":"About the Role \nWe are seeking a highly skilled Senior Java API developer with experience in building high-performing, scalable, enterprise-grade backend systems in the digital advertising domain.\nIn this role, you will design, develop, and optimize backend services powering Mobile Ad SDK systems and AI-driven products such as recommendation engines, monetization optimization platforms, and intelligent ad delivery systems. This role will be responsible for productionizing machine learning models, building high-performance APIs, and enabling intelligent decision systems at scale \nWhat You'll Do:\nDesign and develop scalable, secure, and high-performance RESTful APIs using Java (Java 11+) and Spring Boot. \nOwn end-to-end solution design, planning, execution, and release of backend features.\nBuild and maintain backend services supporting AI-driven initiatives (recommendation systems, predictive analytics). \nProductionize and integrate ML models into backend systems, enabling real-time intelligent decisioning. \nDevelop efficient data models and optimize database queries (MySQL/PostgreSQL) for performance and reliability. \nEnsure API security using OAuth2, JWT, and role-based access controls. \nBuild for scale-design systems capable of handling high concurrency, large data volumes, and low-latency requirements. \nImplement observability best practices including logging, monitoring, tracing, and alerting. \nParticipate in code reviews, design discussions, and technical decision-making to ensure engineering excellence. \nCollaborate cross-functionally with Analytics, Product, SDK, UI, Ad server, DevOps, and QA teams to deliver AI-powered features. \nLeverage generative AI tools and advanced prompt engineering techniques to enhance productivity and code quality.\nWe’d Love for You to Have \n3-6 years of experience in Java development in Linux/UNIX environments. \nStrong proficiency in Core Java, OOPS, Data Structures, and J2EE technologies. \nHands-on experience with Spring, Spring Boot, and Hibernate. \nStrong experience in REST Web Services development and microservices architecture. \nProficiency in SQL, schema design, indexing, performance tuning, and complex queries. \nExperience with Docker, Kubernetes, Jenkins, Maven, Git, and CI/CD pipelines. \nExperience working on high-performance and scalable AdTech systems (preferred). \nWorking knowledge of Python and integration with AI/ML services. \nUnderstanding of advanced AI concepts including RAG, agentic AI, model fine-tuning, and recommendation systems. \nExperience in JUnit, TDD, refactoring, and Agile development practices. \nDemonstrated ability to work independently and drive technical ownership. \nQualification:\nShould have a bachelor’s degree in engineering or an equivalent degree from a well-known institute/university. \nAdditional Information:\nReturn to Office: PubMatic employees throughout the globe have returned to our offices via a hybrid work schedule (3 days “in office” and 2 days “working remotely”) that is intended to maximize collaboration, innovation, and productivity among teams and across functions.\nBenefits: Our benefits package includes the best of what leading organizations provide, such as paternity/maternity leave, healthcare insurance, broadband reimbursement. As well, when we’re back in the office, we all benefit from a kitchen loaded with healthy snacks and drinks and catered lunches and much more!.\nDiversity and Inclusion: PubMatic is proud to be an equal opportunity employer; we don’t just value diversity, we promote and celebrate it. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status\nAbout PubMatic\nPubMatic is one of the world’s leading scaled digital advertising platforms, offering more transparent advertising solutions to publishers, media buyers, commerce companies and data owners, allowing them to harness the power and potential of the open internet to drive better business outcomes.\nFounded in 2006 with the vision that data-driven decisioning would be the future of digital advertising, we enable content creators to run a more profitable advertising business, which in turn allows them to invest back into the multi-screen and multi-format content that consumers demand.","description_format":"text","description_chars":4320,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Hybrid work"],"hiring_locations":[{"name":"India","iso":"IN","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Advertising"],"lifecycle":[{"event":"open","at":"2026-10-13T11:34:44Z"}],"visa":[],"liveness":{"score":11,"band":"cold","label":"Long shot","p_open":1,"p_active":0.388,"p_room":0.28,"age_days":88,"expected_fill_days":29,"reasons":["conf:2","stale_co","velocity","win:tail","crowd:"],"computed_at":"2026-10-20T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/pubmatic-senior-software-engineer-java-api-developer","json_url":"https://alion.io/job/pubmatic-senior-software-engineer-java-api-developer.json","meta":{"generated_at":"2026-10-20T23:50:40Z","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":27481,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-21T00:00:00Z"}},"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":5112},"rest":"https://alion.io/mcp/rest/get_company?id=5112"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fpubmatic-senior-software-engineer-java-api-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%2Fpubmatic-senior-software-engineer-java-api-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%2Fpubmatic-senior-software-engineer-java-api-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/pubmatic-senior-software-engineer-java-api-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fpubmatic-senior-software-engineer-java-api-developer"}]}