C1X Inc.

Java Back-end RTB Engineer

C1X Inc.  •  Chennai, IN (Onsite)  •  3 months ago
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Job Description

C1X AdTech Pvt Ltd is a fast-growing product and engineering-based AdTech company building next-generation advertising and marketing technology platforms. Our mission is to empower enterprise clients with the smartest marketing solutions, enabling seamless integration with personalization engines and delivering cross-channel marketing capabilities. We focus on enhancing customer engagement and experiences while driving measurable growth in Lifetime Value (LTV).As part of our world-class engineering team, you will be working across front end (UI), back end (API/Java), Big Data, and Real-Time Bidding (RTB) systems to deliver high-performance, scalable products.
As an RTB Engineer, you will be a key contributor in building and scaling our RTB servers, integrating with top global exchanges, ensuring ultra-low latency performance, and continuously optimizing for business needs. This role demands strong AdTech domain knowledge, expertise in RTB protocols, and a passion for solving complex engineering problems. Objectives
  • Design and maintain scalable, efficient backend code with seamless third-party integrations.
  • Build robust, high-performance, and resilient back-end systems for RTB and AdTech platforms.
  • Manage integrations with leading SSP and DSP partners across the industry.
Responsibilities
  • Design, develop, and maintain RTB systems using Java and Spring Boot.
  • Integrate with global ad exchanges via OpenRTB and other protocols.
  • Conduct code and design reviews to ensure best practices and high-quality deliverables.
  • Monitor, analyze, and optimize RTB server performance (latency, throughput, GC tuning).
  • Collaborate with product teams to translate business requirements into scalable solutions.
  • Implement, manage, and monitor ad campaigns while troubleshooting technical issues.
  • Work with large-scale datasets to identify optimization opportunities and improve system efficiency.
  • Drive continuous improvements in reliability, scalability, and fault-tolerance.
Qualifications
  • Bachelor’s degree in Computer Science/Engineering or equivalent.
  • Strong knowledge of data structures, algorithms, and distributed system design.
  • 3–5 years’ experience in digital advertising (display, video, mobile).
  • 2+ years of hands-on experience with RTB systems
  • Deep understanding of OpenRTB protocol
  • Expertise in Java, Java EE/J2EE, and Spring Boot.
  • Experience with Hibernate, NIO, and microservice architectures.
  • Strong debugging skills (memory leaks, thread starvation, heap/thread dumps).
  • Understanding of Garbage Collection policies and JVM tuning
  • Experience with Kafka, ELK stack (Elasticsearch, Logstash, Kibana) is a plus.
  • Knowledge of server-side scripting and performance profiling tools is desirable.
C1X Inc.

About C1X Inc.

C1X is a Silicon Valley-based digital advertising and marketing technology company that is building exactly what the company name suggests - A "Class One Exchange"​ for premium advertisers, advertising agencies and premium publishers.

The digital advertising and marketing industries have faced issues such as lack of transparency, inefficient manual workflow and fragmentation.

C1X is a full-stack advertising and marketing technology platform that provides the ideal set of tools and technologies in an integrated, intuitive user interface that allows for advertisers and marketers to find the audiences and premium inventory that they want to buy, transact on the platform in an efficient manner, and receive actionable insights that can be put to use immediately to increase the performance of the advertising/marketing campaign.

For example, C1X provides its header tag solution which not only allows for the latest header bidding technology, but also provides proprietary C1X features that allow for other intelligent transaction methods that allow for buyers to purchase the exact audiences that they want to purchase on premium sites, and publishers to maximize their monetization through the full-stack yield maximization solution that C1X provides.

C1X also provides features that are tailored specifically towards eCommerce marketplaces and merchants, with a fully-automated native eCommerce ad server suite that allows for marketplace operators to create a new, steady flow of significant advertising revenue, and for merchants to increase their revenue through data-driven promotion of their own products and services.

C1X operates in the United States, India, Japan, Asia Pacific and the Middles East, with plans to expand operations to Europe and South America in 2017.

Industry
Unknown
Company Size
51-200 employees
Headquarters
San Jose
Year Founded
2014
Website
c1exchange.com
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