Principal/Senior Software Engineer - Java at PubMatic | Pune, IN

About the Role We are seeking an accomplished Principal/Senior Software Engineer to spearhead the design and advancement of our high-frequency, large-scale AdTech platform. This influential role merges deep expertise in Java backend systems with state-of-the-art Generative AI applications. You will be responsible for overseeing complex software systems from inception to completion, steering the organization's technical trajectory, and excelling at the confluence of extreme scalability—handling trillions of daily transactions—and bold innovation.What You'll Do:Lead the architectural vision for scalable, high-performance systems that meet stringent security and maintainability standards.Conduct independent design reviews; convert feature requirements into robust technical designs with complete ownership of planning, execution, and release.Advocate for and integrate Generative AI to enhance ad delivery, targeting, and operational efficiency.Develop and sustain scalable backend services using Java, Spring Boot, RabbitMQ, Elasticsearch, and related frameworks.Design efficient data models and optimize MySQL/PostgreSQL queries for high performance and reliability at massive scale.

About the RoleWe are looking for a highly skilled Senior Software Engineer specializing in Java to join our dynamic team at PubMatic. The ideal candidate will have a strong background in developing scalable, high-performance applications within the digital advertising sector. In this role, you will be responsible for designing, developing, and optimizing backend systems that facilitate large-scale ad delivery, targeting, and reporting. Additionally, you will have the chance to harness the power of AI and Generative AI technologies to craft innovative solutions that improve ad generation, optimization, and personalization, ultimately driving significant results in the digital advertising space.What You Will Do:Independently create and present design reviews, effectively translating feature requirements into solid technical designs.Oversee the entire lifecycle of solution design, planning, execution, and release for feature requirements.Collaborate with cross-functional teams to ensure seamless integration of developed features.Utilize best practices in software development to enhance performance and scalability.Stay updated on the latest industry trends and technologies to continually improve our systems.

About the Role We are on the lookout for a highly skilled Senior Principal AI Architect to lead and architect the foundational elements of PubMatic's AI and Agentic Systems platform. This pivotal role will act as the foremost technical authority for AI architecture within the organization. Your focus will be on ensuring architectural integrity, system robustness, platform governance, and the sustained health of our AI infrastructure. You will collaborate closely with engineering, product, infrastructure, and business leaders to guarantee that our AI systems are scalable, reliable, cost-effective, and strategically aligned with our goals. A hands-on technical leadership style is essential, as you will be directly involved in key AI and agentic system design decisions. What You'll Do AI & Agentic Systems Technical Architect Establish and uphold architecture-first principles for AI and agentic systems. Evaluate system designs and advise on suitable models, frameworks, and patterns. Convert non-functional requirements (latency, reliability, scalability, observability, cost) into actionable designs. Act as the ultimate technical escalation point for complex AI-related decisions. Guide the selection, evaluation, and deployment of models. AI / Agent Core Platform Architect Design the agent ecosystem as a unified platform. Define common agent patterns and orchestration frameworks. Set standards for autonomy levels, guardrails, and safety. Ensure consistency between agent behavior and business logic. Promote the standardization of evaluation and lifecycle management practices. Cross-Functional Technical Representative Serve as the technical voice in organization-wide AI discussions. Effectively communicate system capabilities and trade-offs. Translate customer and business needs into architectural solutions. Collaborate with product and business teams to develop scalable AI solutions. AI Evangelism & Organizational Maturity Leader Enhance AI maturity across the engineering team. Conduct knowledge-sharing sessions on emerging models and frameworks. Share insights gained from deployments. Influence AI engineering best practices across the organization.

About the RoleThe Senior Security Engineer position is a critical technical role aimed at enhancing our organization's cybersecurity framework through effective infrastructure, endpoint, and cyber security strategies. This role demands extensive knowledge in Zero Trust architecture, cloud security (AWS, Azure, GCP), and various technologies such as IDS/IPS, SIEM, WAF, and DLP. The selected candidate will spearhead projects related to vulnerability management, threat detection, incident response, and security automation, employing cutting-edge tools. Collaboration with cross-functional teams will be essential to embed security into the design process, conduct thorough risk assessments, and engage in red and blue team exercises. Additionally, the engineer will promote security awareness initiatives, contribute to internal audits and compliance measures, and mentor junior members of the team. Familiarity with AI risk assessments, evolving threat landscapes, and automation scripting (Python, Bash, Ruby) is crucial for this role.This strategic role requires a unique combination of technical proficiency and a comprehensive understanding of the security landscape. Strong communication skills, proactive problem-solving abilities, and the capability to align technical solutions with business objectives are vital for success in this security engineering position.

About the Role  Join us at PubMatic, where we leverage data on an unparalleled scale. As a Senior Machine Learning Platform Engineer, your primary focus will be to architect and enhance the infrastructure and frameworks that underpin machine learning development, experimentation, and production across a vast global network that processes trillions of ad impressions. You will work closely with Machine Learning Engineers, Data Scientists, and Product stakeholders to expedite experimentation, enhance operational efficiency, and seamlessly transition AI solutions from their conceptual stages to full-scale production. This role provides direct access to petabyte-scale datasets, industry-standard ML efficiency tools (such as Triton inference and GPU-accelerated computing), and the chance to assess and integrate emerging AI/ML technologies. Your contributions will play a pivotal role in shaping the next-generation ML platform tailored for adtech, facilitating advanced use cases such as troubleshooting bid stream issues, competitive intelligence, benchmarking, forecasting, reinforcement learning, and retrieval-augmented generation (RAG). 

About the Role  We are on the lookout for a highly skilled and experienced Senior Network Engineer to become a key member of our dynamic team at PubMatic. The ideal candidate will possess over 5 years of extensive hands-on experience in managing and supporting enterprise-level network infrastructures. A deep expertise in routing, switching, firewalls, VPNs, and network security protocols is essential. This role entails designing, implementing, and maintaining sophisticated networks, ensuring optimal performance, availability, and security for mission-critical business systems. Proficiency in protocols such as BGP, OSPF, along with familiarity with load balancing and network monitoring tools, is a must. Candidates with experience in Juniper hardware are highly preferred, along with Cisco routing, switching, and troubleshooting experience. Relevant certifications such as CCNP, NSE, PCNSE, or JNCIA are advantageous.What You'll Do:Oversee IP connectivity and latency for all data center networks.Configure BGP for transit and private peering.Collaborate with the architecture team to devise plans for various networking solutions.Manage and execute WAN installations.Enhance and improve network performance.Monitor and scale network bandwidth as necessary.Implement future PubMatic service data centers (domestic or international).Plan and carry out complex network upgrades and migration activities.Oversee all aspects of network security, including load balancers, firewalls, and router ACLs.Facilitate remote access for PubMatic users and clients.Perform maintenance on network hardware and software.Proactively prepare for scaling and infrastructure growth.Research and evaluate new tools and network technologies.Standardize device firmware updates as required.Manage service requests and support tickets effectively.Occasionally travel to data centers.Provide on-call support after hours and during emergencies as necessary.Handle vendor support issues and engagements.Deliver projects within tight deadlines and high-pressure environments.

Join PubMatic as a Principal Software Engineer specializing in Data Analytics, where you will leverage your technical expertise to drive data-driven decision making. You will be responsible for architecting and developing robust analytics solutions, collaborating with cross-functional teams to optimize data processing pipelines, and enhancing our analytics capabilities.

About the RoleJoin PubMatic as a Senior Software Engineer and play a pivotal role in designing and implementing cutting-edge, highly scalable ad server features capable of processing over 1 trillion requests daily. If you thrive in a dynamic environment focused on building applications that handle hundreds of billions of requests per day and enjoy the excitement of managing millions of requests per second, we encourage you to apply. Enjoy competitive compensation, generous incentives, a collaborative team culture, and ample career advancement opportunities.What You Will DoImplement best practices in software development and documentation, ensuring designs meet requirements and deliver high-quality results.Exhibit the ability to work independently and demonstrate self-direction.Take ownership of your work and ensure timely deliverables.Strive to exceed expectations and achieve remarkable outcomes.Collaborate effectively with cross-functional teams to reach shared goals.Communicate clearly and effectively, both verbally and in writing.Preferred Qualifications4+ years of experience in software development using C/C++ in a Linux/UNIX environment.Experience with the Go programming language is a plus.Strong understanding of data structures and algorithms.Excellent analytical and problem-solving skills.Familiarity with generative AI-based tools and IDE for efficient development.Basic understanding of various models.Knowledge of prompt engineering fundamentals.Experience in OS and system programming, including multi-threading, multi-processing, and memory management.Proficient in troubleshooting issues with existing features in live production environments.Ability to write clean, modular, and loosely coupled code.Comprehensive understanding of end-to-end product functionality.Capability to design software for assigned tasks.

About the Role At PubMatic (Nasdaq: PUBM), we are a pioneering technology firm dedicated to maximizing client value through the development of a future-ready digital advertising supply chain. Our innovative sell-side platform empowers premier digital content creators across the open internet, enabling them to manage access to their inventory and enhance monetization. By facilitating marketers in achieving optimal return on investment and accurately targeting audiences across various ad formats and devices, we have revolutionized the industry since our inception in 2006. Our infrastructure-driven methodology ensures efficient, real-time data processing and utilization, driving scalable and flexible programmatic innovation that enhances outcomes for our customers while promoting a transparent and vibrant digital advertising ecosystem. Your Responsibilities Possess 3 to 5 years of software development experience, with a minimum of 3 years in UI and Backend development. Demonstrate at least 6 months of experience in backend API development, preferably using NodeJS or other prominent languages such as Python. Showcase hands-on expertise in advanced JavaScript and frameworks like ReactJS, AngularJS, and NodeJS. Design, build, and maintain high-performance, scalable backend services utilizing NodeJS/Python in Linux/UNIX environments. Exhibit proficiency in SQL and relational databases, including complex queries, performance optimization, schema design, indexing, and stored procedures. Have a strong understanding of REST API development, patterns, and design concerns using NodeJS, Python, etc. Possess solid knowledge of Data Structures and Object-Oriented Programming (OOP) concepts. Experience with Angular 5 and above is essential; familiarity with the Angular framework is advantageous. Have over 3 years of experience with design patterns, modular JavaScript, ES6, and front-end debugging techniques. Have a strong foundation in unit testing for both UI and backend codebases. Demonstrate problem-solving abilities and a willingness to learn and adapt to new technologies. Experience working collaboratively with cross-functional teams, including Product, Marketing, UX, QA, Account Management, and Backend teams across multiple locations, including Pune and various cities in the US. Understand performance, scalability, and security considerations for web applications.

Join PubMatic as a Senior Software Engineer and be a pivotal part of our Core Platform team. In this role, you will design, develop, and enhance our core technologies that power digital advertising, ensuring optimal performance and scalability.

About the Role: Join PubMatic as a Senior Software Engineer, where you will design and implement cutting-edge, scalable, and low-latency DSP bidder features on our Activate platform. If you thrive in a creative, fast-paced environment and are passionate about building applications that handle millions of requests per second, we invite you to apply. We offer competitive compensation, excellent incentives, a collaborative culture, and abundant opportunities for professional growth. What You Will Do: Create, develop, and maintain high-performance backend services using Golang in a Linux/UNIX environment. Implement best practices in software development and documentation, ensuring that designs meet requirements and deliver high-quality results. Exhibit self-direction and independence in your work. Take ownership of one or more functional modules and act as the point of contact for them. Write clean, modular, and loosely coupled code following established best practices. Engage in Agile development processes, including sprint planning, code reviews, and continuous improvement initiatives. Collaborate with teams to meet shared objectives. Showcase exceptional verbal and written communication skills. Be prepared to go the extra mile to achieve outstanding results. We'd Love for You to Have: Over four years of development experience in Go within a Linux/UNIX environment; familiarity with C/C++ is a plus. Strong proficiency in implementing algorithms and utilizing advanced data structures to address computing challenges; a solid grounding in computer science principles is desirable. Experience in developing complex, scalable solutions. A knack for finding optimal solutions and generating innovative ideas. Excellent problem-solving capabilities. Familiarity with generative AI-based tools and IDEs for efficient work. A basic understanding of various models. Knowledge of OS concepts and practical experience in system programming, including multi-threading, multi-processing, and memory management. Ability to troubleshoot issues with existing features in a live production environment. Capability to write clean, modular, and loosely coupled code.

About the Role  Join PubMatic as a Senior Software Engineer focused on Data Analytics, where you will leverage your expertise to craft and refine AI agents. Your proficiency in technologies such as Hadoop, Spark, Scala, Kafka, and cloud solutions, alongside programming skills in Scala and Python, will be essential. In this role, you will develop sophisticated AI agents that elevate our data analytics capabilities, facilitating complex information retrieval, contextual comprehension, and adaptive interactions, thereby enhancing data-driven insights and analytical workflows.What You'll Do:Design, build, and implement a highly scalable, fault-tolerant big data platform to process vast amounts of data and deliver comprehensive analytics to clients.Develop backend services utilizing Java, REST APIs, JDBC, and AWS.Construct and maintain Big Data pipelines using Spark, Hadoop, Kafka, and Snowflake.Architect real-time data processing workflows and automation frameworks.Create GenAI-powered agents for analytics, operational tasks, and data enrichment, employing frameworks such as LangChain and LlamaIndex.Integrate large language models (e.g., OpenAI, Claude, Mistral) into existing services for enhanced query understanding, summarization, and decision-making support.Oversee end-to-end GenAI workflows, including prompt engineering, fine-tuning, vector embeddings, and retrieval-augmented generation (RAG).Collaborate with cross-functional teams to improve the availability and scalability of large data platforms and enhance PubMatic software functionality.Engage in Agile/Scrum practices such as sprint planning, retrospective sessions, backlog grooming, and user story management.Regularly consult with product managers regarding the integration of new features into the PubMatic Data Analytics platform.Provide support for customer issues through email or JIRA, offering updates and patches to resolve problems.

About the Role: PubMatic is on the lookout for seasoned engineers capable of designing and implementing state-of-the-art, highly scalable, and low-latency ad server features that can handle an astonishing 1 trillion+ requests per day. If you thrive on building robust applications and architectures capable of managing millions of requests per second in a dynamic, fast-paced environment, this role is perfect for you. We offer competitive remuneration, excellent incentives, a collaborative culture, intelligent and supportive colleagues, and abundant opportunities for career advancement. What You'll Do: Lead a diverse team of engineers with varying skills and experiences to tackle complex challenges, develop solutions, and inspire the team to achieve project goals. Formulate a comprehensive plan to guide team members towards project objectives. Collaborate seamlessly with engineering and product leads to grasp the business needs and requirements of our product/platform. Research, design, and build highly reliable, scalable, and low-latency platforms. Experience in creating highly scalable, reliable, low-latency, distributed backend platforms and services is essential. Conduct research on emerging technologies and prepare proof-of-concepts to evaluate them for enhancing our services. Understand existing architectures and designs, proposing innovations and optimizations. Work together with other teams to audit and ensure the stability of the AdServer platform, conducting timely reviews of significant designs and architecture changes made by the AdServer development team. Collaborate with Data Center and DevOps teams for improved planning of new technologies, software optimizations, and stability enhancements across the platform. Utilize best practices for software development and documentation, ensuring designs meet requirements and delivering high-quality outcomes. Integrate GenAI into various phases of product development. Exhibit ownership, self-direction, and a focus on timely delivery.

Join our team as a Senior Software Engineer specializing in Java at Coupa. We are looking for a dynamic individual who is passionate about writing high-quality code and developing robust software solutions. You will be an integral part of our development team, collaborating with cross-functional teams to design, implement, and maintain software applications that drive our business forward.Your expertise in Java will be critical in developing scalable applications and enhancing our product offerings. If you thrive in a fast-paced environment and are eager to take on new challenges, we want to hear from you!

We are seeking a highly skilled Principal Software Engineer with expertise in Java and application migration to join our dynamic engineering team at QAD Inc. In this role, you will lead the design and development of innovative software solutions, driving the migration of legacy applications to modern platforms. You'll collaborate with cross-functional teams to deliver high-quality software that meets our clients' needs.

About AlphaSense: AlphaSense empowers the world’s leading companies to transform uncertainty into informed decision-making. Our market intelligence platform, powered by advanced AI technology, delivers vital insights derived from trusted public and private resources, including equity research, company filings, event transcripts, expert calls, news articles, trade journals, and proprietary research content.In 2024, AlphaSense's acquisition of Tegus enhanced our mission to enable professionals to make better-informed decisions through AI-driven insights. Together, we will foster innovation and accelerate the expansion of our product offerings, giving users access to even richer insights from a multitude of content sources. Trusted by over 6,000 enterprise clients, including many from the S&P 500, AlphaSense was founded in 2011 and is headquartered in New York City, with a global workforce of more than 2,000 employees across offices in the U.S., U.K., Finland, India, Singapore, Canada, and Ireland. Join us on this exciting journey!About the Role:We are in search of an innovative and hands-on Principal AI Engineer, a cornerstone of our strategy for the Content portfolio. In this pivotal role, you will infuse advanced AI expertise into our product offerings, researching, architecting, and pioneering solutions that intelligently process and extract insights from millions of unstructured documents and multimedia content daily.This is an exceptional opportunity for a 'founding engineer' who is keen to influence the future of AI within our organization. As the primary authority on AI/ML, you will pinpoint and deploy cutting-edge techniques for document classification, entity extraction, image search, and more. If you are an experienced engineer passionate about tackling large-scale data challenges and eager to establish a center of excellence, this position is tailored for you.What You’ll Do:Spearhead AI Innovation: As the leading technical expert on AI, research, assess, and prototype state-of-the-art solutions utilizing Large Language Models (LLMs), Computer Vision, and various machine learning techniques to address our most intricate data extraction challenges.Architect for Scale: Create and develop robust, scalable, and cost-efficient AI services and data processing pipelines that will support the processing of millions of documents.

Are you an innovative thinker who thrives on experimentation and is always in pursuit of improved methodologies? If you are eager to learn and grow while gaining hands-on experience in the rapidly evolving payments industry, we want to hear from you!At Modulr, we are on the lookout for ambitious individuals who are ready to contribute meaningfully to our team. As a Principal Engineer, you will not only be a key technical contributor but also play a pivotal role in influencing multiple teams within our Engineering and CTO divisions. You will collaborate with cross-functional teams tasked with solving complex challenges rather than simply executing predefined tasks. This is a fantastic opportunity to immerse yourself in a high-growth environment that fosters a fast-paced, collaborative culture where you will tackle exciting problems head-on.

About AlphaSense: AlphaSense is a leading provider of AI-driven market intelligence, empowering sophisticated enterprises to make informed decisions. Our platform leverages advanced AI technology to deliver reliable insights from a vast array of public and private content, including equity research, company filings, event transcripts, expert calls, news articles, trade journals, and proprietary client research.In 2024, AlphaSense enhanced its mission by acquiring Tegus, further solidifying our commitment to facilitating smarter decision-making through enhanced AI capabilities. This partnership accelerates our growth and innovation, allowing users to access deeper insights from a myriad of content sets. Trusted by over 6,000 enterprise clients, including a significant portion of the S&P 500, AlphaSense was founded in 2011 and is headquartered in New York City, with a global workforce of over 2,000 employees across multiple offices in the U.S., U.K., Finland, India, Singapore, Canada, and Ireland. Join us and be part of our journey!About the Role:We are on the lookout for a forward-thinking and hands-on Principal AI Engineer to play a pivotal role in our Content portfolio strategy. You will be instrumental in infusing modern AI expertise into our product offerings. Your primary responsibility will involve researching, architecting, and developing solutions to process and extract intelligent insights from millions of unstructured documents and multimedia files daily.This is a unique opportunity to act as a founding engineer and shape the future of AI within our organization. You will serve as the main authority on AI/ML, tasked with identifying and implementing cutting-edge techniques for document classification, entity extraction, image search, and more. If you are an experienced engineer who thrives on tackling large-scale data challenges and is eager to build a center of excellence from the ground up, we want you on our team!

About the RoleJoin our dynamic team at PubMatic as a Senior Machine Learning Engineer in Pune, where you'll thrive in a hybrid work environment. In this pivotal role, reporting directly to the Director of Machine Learning, you will collaborate closely with Product and Engineering teams to tackle challenges and uncover new business opportunities. The ideal candidate will leverage quantitative analysis, advanced modeling, and data mining techniques to inform product strategies and drive results at PubMatic.Your ResponsibilitiesConduct comprehensive analysis to enhance and optimize key product KPIs.Utilize statistical methods, modeling, and machine learning to enhance system efficiency and relevance algorithms across our suite of business applications.Perform data analyses to provide actionable product recommendations and design A/B testing frameworks.Work in partnership with Product and Engineering teams to diagnose issues and identify emerging trends and opportunities.Engage with cross-functional stakeholders to gather business requirements and execute thorough analyses, encompassing data collection, analysis, continual deliverables, and presentations.Preferred QualificationsA minimum of five years of hands-on experience in developing Machine Learning models to address business challenges, utilizing statistical tools such as R, MATLAB, Python (NumPy, Scikit-learn, Pandas), or MLlib.Proven ability to articulate product-related queries and employ statistical techniques to derive insights.Proficient in SQL scripting for extracting large datasets and designing ETL processes.Experience in interdisciplinary or cross-functional roles.A strong passion for data, metrics, analysis, and trends, along with applied knowledge of measurement, statistics, and program evaluation.Outstanding problem-solving abilities and sound business judgment.Skilled in translating analytical outcomes into strategic business recommendations.Educational Requirements:Bachelor’s degree in Engineering (Computer Science / Information Technology) or equivalent from a recognized institution. Additional Information:

OpenGov creates AI-driven ERP solutions for local and state governments in the United States. Over 2,000 public sector organizations rely on the OpenGov Public Service Platform to streamline operations, manage assets, handle procurement, and support transparency. The platform covers a wide range of functions, including accounting, budgeting, billing, permitting, and open data tools. These solutions help public agencies focus on their core work and make the most of every decision and dollar. More information is available at OpenGov.com. Role overview This Principal Software Engineer position acts as the senior technical leader for OpenGov’s data platform, which underpins all company products. The role leads AI integration across the platform, shaping both the APIs and services that power AI features and the engineering workflows that use AI to boost productivity. Responsibilities include setting technical standards and overseeing large-scale system architecture in a team dedicated to building AI-native solutions. What you will do Design and develop APIs and services for OpenGov’s data and reporting platform, supporting AI agents and user-facing interfaces at scale. Define and promote the technical strategy for AI integration, including agent-driven workflows, AI-powered data analysis, and retrieval-augmented generation over government datasets. Introduce and refine engineering practices augmented by AI: assess and implement new AI development tools, set standards for reviewing AI-generated code, and track productivity gains. Lead end-to-end feature delivery, from design to production monitoring, using AI-assisted workflows to shorten development cycles. Identify performance bottlenecks and make architectural decisions to support future platform scalability. Mentor senior engineers and help build a culture where AI fluency is a core skill. Requirements Over 10 years of software engineering experience, with a strong background in scalable systems and AI integration.