Senior Software Engineer - Java API developer

Pune💼 Full-time🗓 2026-07-23 → 2026-09-26

Core

Design, develop, and optimize scalable backend services and RESTful APIs powering Mobile Ad SDKs, AI-driven recommendation engines, and intelligent ad delivery systems.

Role type

Senior Software Engineer (Java Backend & ML Integration)

Builds

High-performance backend services, productionized ML models, and intelligent decisioning systems for digital advertising.

Domain

Digital Advertising / AdTech / Machine Learning

Deliverable

production ML models | product features

Required skills

Java (11+), Spring Boot, Hibernate, RESTful API design, Microservices architecture, SQL (MySQL/PostgreSQL), Docker, Kubernetes, CI/CD pipelines, OAuth2/JWT security, Python (basic), TDD

Preferred skills

AdTech system experience, RAG, agentic AI, model fine-tuning, recommendation systems

Technologies

Java, Spring Boot, Hibernate, MySQL, PostgreSQL, Docker, Kubernetes, Jenkins, Maven, Git, OAuth2, JWT

Responsibilities

Design and develop scalable RESTful APIs; own end-to-end solution design and release; integrate ML models into backend systems; optimize database queries; implement observability practices; participate in code reviews and technical decision-making.

Seniority

Senior, hands-on IC

Sourced via greenhouse · Listed on CareerPlan, which tracks 70,000+ jobs from 20+ sources.

About PubMatic

PubMatic 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. Founded 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.